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8-K - MIDWAY GOLD CORP. - 8-K - Midway Gold Corpmidway8k09092014.htm

NI 43-101 TECHNICAL REPORT ON RESOURCES

sPRING VALLEY Project

Pershing County, Nevada

 

 

 

PREPARED FOR

 

 

 

 

 

 

 

Report Date: September 9, 2014

Effective Date: August 1, 2014

 

 

Prepared by

William J. Crowl, R.G., MMSA QP

Zachary J. Black, SME-RM

Deepak Malhotra, PhD, SME-RM

 

   

Midway Gold Corp.

Spring Valley Project

 

Certificate of Authors

NI 43-101 Technical Report on Resources

 

William J. Crowl

Vice President, Mining

Gustavson Associates, LLC

274 Union Boulevard, Suite 450

Lakewood, Colorado 80228

Telephone: 720-407-4062 Facsimile: 720-407-4067

Email: wcrowl@gustavson.com

 

CERTIFICATE of AUTHOR

 

I, William J. Crowl do hereby certify that:

 

1.I am currently employed as Vice President, Mining by Gustavson Associates, LLC at:

274 Union Boulevard

Suite 450

Lakewood, Colorado 80228

 

  1. I am a graduate of the University of Southern California with a Bachelor of Arts in Earth Science (1968), and an MSc in Economic Geology from the University of Arizona in 1979, and have practiced my profession continuously since 1973.
  2. I am a registered Professional Geologist in the State of Oregon (G573) and am a registered member of the Mining and Metallurgical Society of America (01412QP)..
  3. I have worked as a geologist for a total of 40 years since my graduation from university; as a graduate student, as an employee of a major mining company, a major engineering company, and as a consulting geologist.
  4. I have read the definition of “qualified person” set out in National Instrument 43-101 (“NI 43-101”) and certify that by reason of my education, affiliation with a professional association (as defined in NI 43-101) and past relevant work experience, I fulfill the requirements to be a “qualified person” for the purposes of NI 43-101.
  5. I am responsible for the preparation of the technical report titled “NI 43-101 Technical Report on Resources, Spring Valley Project” dated September 9, 2014 with an effective date of August 1, 2014 (the “Technical Report”), with specific responsibility for Sections 1-8, and 15-19 and overall corporate responsibility for the general content and organization of the report. Mr. Crowl visited the site on October 24, 2013 for one day
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    NI 43-101 Technical Report on Resources

  7. I have had prior involvement with the property that is the subject of this Technical Report. I was responsible for the preparation of the report titled “NI 43-101 Technical Report on the Spring Valley Project, Pershing County, Nevada,” dated May 24, 2011, with specific responsibility for Sections 9, 10 and 11 and overall corporate responsibility for the general content and organization of the report.

In addition, I was responsible for the preparation of the technical report titled “Updated NI 43-101 Technical Report on the Spring Valley Project” dated November 29, 2012, with specific responsibility for Sections 9, 10 and 11 and overall corporate responsibility for the general content and organization of the report.

  1. I am independent of the issuer applying all of the tests in Section 1.5 of National Instrument 43-101.
  2. I have read National Instrument 43-101 and Form 43-101, and the Technical Report has been prepared in compliance with that instrument and form.
10.I consent to the filing of the Technical Report with any stock exchange and other regulatory authority and any publication by them for regulatory purposes, including electronic publication in the public company files on their websites accessible by the public, of the Technical Report.
11.As of the date of this certificate, to the best of my knowledge, information and belief, the Technical Report contains all scientific and technical information that is required to be disclosed to make the Technical Report not misleading.

 

 

Dated this 9th day of September, 2014.

 

 

/s/ William J. Crowl    
Signature of Qualified Person  

 

William J. Crowl

   
Signature of Qualified Person  

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NI 43-101 Technical Report on Resources

Zachary J. Black

Associate Resource Geologist

Gustavson Associates, LLC

274 Union Boulevard, Suite 450

Lakewood, Colorado 80228

Telephone: 720-407-4062 Facsimile: 720-407-4067

Email: zblack@gustavson.com

 

CERTIFICATE of AUTHOR

 

I, Zachary J. Black do hereby certify that:

  1. I am currently employed as Associate Resource Geologist with Gustavson Associates, LLC at:

274 Union Boulevard

Suite 450

Lakewood, Colorado 80228

  1. I am a graduate of the University of Nevada Reno with a Bachelor of Science in Geological Engineering, and have practiced my profession continuously since 2005.
  2. I am a registered member of the Society of Mining Metallurgy and Exploration (No. 4156858RM).
4.I have worked as a Geological Engineer/Resource Estimation Geologist for a total of seven years since my graduation from university; as an employee of a major mining company, a major engineering company, and as a consulting engineer. I have estimated numerous mineral resources containing gold and have seven years of precious and base metals experience.
  1. I have read the definition of “qualified person” set out in National Instrument 43-101 (“NI 43-101”) and certify that by reason of my education, affiliation with a professional association (as defined in NI 43-101) and past relevant work experience, I fulfill the requirements to be a “qualified person” for the purposes of NI 43-101.
  2. I am responsible for the preparation of the technical report titled “NI 43-101 Technical Report on Resources, Spring Valley Project” dated September 9, 2014 with an effective date of August 1, 2014 (the “Technical Report”), with specific responsibility for Sections 9-12 and 14. Mr. Black visited the site on October 21 and 22, 2010 and October 24, 2013 for one day.
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  4. I have had prior involvement with the property that is the subject of this Technical Report. I prepared the resource estimate in the report titled “NI 43-101 Technical Report on the Spring Valley Project, Pershing County, Nevada,” dated May 24, 2011. In addition, I prepared the resource estimate in the report titled “Updated NI 43-101 Technical Report on the Spring Valley Project” dated November 29, 2012.
  5. I am independent of the issuer applying all of the tests in Section 1.5 of National Instrument 43-101.
9.I have read National Instrument 43-101 and Form 43-101, and the Technical Report has been prepared in compliance with that instrument and form.
10.I consent to the filing of the Technical Report with any stock exchange and other regulatory authority and any publication by them for regulatory purposes, including electronic publication in the public company files on their websites accessible by the public, of the Technical Report.
11.As of the date of this certificate, to the best of my knowledge, information and belief, the Technical Report contains all scientific and technical information that is required to be disclosed to make the Technical Report not misleading.

 

 

Dated this 9th day of September, 2014.

 

/s/ Zachary J. Black

   
Signature of Qualified Person  

 

Zachary J. Black

   
Signature of Qualified Person  

 

 

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Deepak Malhotra, PhD,

Member SME-RM, CIMM

Resource Development, Inc.

11475 West I-70 Frontage Road North

Wheat Ridge, Colorado 80033

Telephone: (303) 422-1176 Facsimile: (303) 424-8580

Email: dmalhotra@aol.com

 

CERTIFICATE of AUTHOR

 

I, Deepak Malhotra do hereby certify that:

 

  1. I am currently employed as President by Resource Development, Inc. at:

11475 West I-70 Frontage Road North

Wheat Ridge, Colorado 80033

 

2.I am a graduate of Colorado School of Mines with a M.Sc. degree in Metallurgical Engineering (1974), and PhD in Mineral Economics (1978).
3.I am a registered member of the Society of Mining, Metallurgy and Exploration, Inc. (SME), member No. 2006420RM.
4.I have worked as a Metallurgist/Mineral Economist for a total of 40 years since my graduation from university; as an employee of several mining companies, an engineering company, a mine development and mine construction company, an exploration company, and as a consulting engineer..
5.I have read the definition of “qualified person” set out in National Instrument 43-101 (“NI 43-101”) and certify that by reason of my education, affiliation with a professional association (as defined in NI 43-101) and past relevant work experience, I fulfill the requirements to be a “qualified person” for the purposes of NI 43-101.
6.I am responsible for the preparation of the technical report titled “NI 43-101 Technical Report on Resources, Spring Valley Project” dated September 9, 2014 with an effective date of August 1, 2014 (the “Technical Report”), with specific responsibility for Section 13. I have not visited the Spring Valley Mine Site.
7.I have had prior involvement with the property that is the subject of this Technical Report. I was responsible for the preparation of the report titled “NI 43-101 Technical

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Report on the Spring Valley Project, Pershing County, Nevada,” dated May 24, 2011, with specific responsibility for Section 18.

8.In addition, I was responsible for the preparation of the technical report titled “Updated NI 43-101 Technical Report on the Spring Valley Project” dated November 29, 2012, with specific responsibility for Section 18.
9.I am independent of the issuer applying all of the tests in Section 1.5 of National Instrument 43-101.
10.I have read National Instrument 43-101 and Form 43-101, and the Technical Report has been prepared in compliance with that instrument and form.
11.I consent to the filing of the Technical Report with any stock exchange and other regulatory authority and any publication by them for regulatory purposes, including electronic publication in the public company files on their websites accessible by the public, of the Technical Report.
12.As of the date of this certificate, to the best of my knowledge, information and belief, the Technical Report contains all scientific and technical information that is required to be disclosed to make the Technical Report not misleading.

 

Dated this 9th day of September, 2014.

 

/s/ Deepak Malhotra

   
Signature of Qualified Person  

 

Deepak Malhotra

   
Signature of Qualified Person  

 

  

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TABLE OF CONTENTS

 

Section Title Page No.

1.   SUMMARY 1
1.1   Introduction 1
1.2   Geology and Mineralization 1
1.3   Drilling and Exploration Status 2
1.4   Environmental and Permitting 2
1.4.1   Environmental Liabilities 2
1.4.2   Permits 3
1.5   Operational Permits and Jurisdictions 3
1.6   Infrastructure 3
1.7   Mineral Processing and Metallurgical Testing 4
1.8   Mineral Resources 4
1.9   Interpretations and Conclusions 6
1.9.1   Environmental 6
1.9.2   Geology and Deposit Type 6
1.9.3   Exploration, Drilling, and Analytical 6
1.9.4   Quality Assurance/Quality Control 6
1.9.5   Mineral Processing and Metallurgical Testing 6
1.9.6   Data Verification 7
1.9.7   Resource 7
1.10   Recommendations 7
1.10.1   Scoping Study 7
1.10.2   Geologic Model 7
1.10.3   Metallurgical Study 8
1.10.4   Geotechnical and Hydrogeological Study 8
1.10.5   Environmental Permitting 8
1.10.6   Exploration Program 8
1.10.7   Budget 9
2.   INTRODUCTION AND TERMS OF REFERENCE 10
2.1.1   Details of Inspection 10
2.1.2   Sources of Information 11
2.2   Effective Date 11
2.3   Units of Measure 11
3.   RELIANCE ON OTHER EXPERTS 14
4.   PROPERTY DESCRIPTION AND LOCATION 14
4.1   Property Location 14
4.2   Agreements and Royalties 15
4.2.1   Barrick Agreement 15
4.2.2   Agreements 15
4.3   Environmental Liabilities 16

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4.4   Permits 17
5.   ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE AND PHYSIOGRAPHY 19
5.1   Accessibility 19
5.2   Climate 20
5.3   Local Resources and Infrastructure 20
5.4   Physiography 20
5.5   Water Rights 21
6.   HISTORY 21
7.   GEOLOGICAL SETTING AND MINERALIZATION 22
7.1   Regional Geologic Setting 22
7.2   Local Geologic Setting 24
7.3   Lithologic Units 26
7.3.1   Quaternary Alluvium (Qal) 26
7.3.2   Limerick Greenstone: 26
7.3.3   Rochester Rhyolite 26
7.3.4   Upper Rhyolite 27
7.3.5   Siltstone 27
7.3.6   WT Rhyolite 27
7.3.7   Breccia/Conglomerate 28
7.3.8   Intrusive rocks 28
7.4   Mineralization Style 32
7.5   Alteration 32
7.6   Geometry of Mineralization 34
8.   DEPOSIT TYPES 35
9.   EXPLORATION 35
9.1   Pre-MGC Exploration 36
9.2   MGC Exploration 36
9.2.1   Surface Geochemistry 36
9.2.2   Rock Samples 36
9.2.3   Geological Mapping 36
9.2.4   Geophysical Surveys 36
9.3   Barrick Exploration 37
9.4   Exploration Targets 37
10.   DRILLING 37
10.1   Type and Extent 37
10.2   Drilling Procedures and Conditions 40
10.2.1   Reverse Circulation Drilling 40
10.2.1   Diamond Core Drilling 40
10.2.2   Drill Collar and Downhole Surveys 41
10.3   Drilling Interpretations and Results 41

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11.   SAMPLE PREPARATION, ANALYSES, AND SECURITY 42
11.1   Sampling Method and Approach 42
11.2   Midway Sampling Preparation, Analyses, and Security 42
11.2.1   Sample Chain of Custody 42
11.2.2   Diamond Drilling Core Sampling 43
11.2.3   Sampling of Reverse Circulation Cuttings 43
11.2.4   Sample Preparation and Assay Procedures 44
11.2.5   Standards, Duplicates, and Blanks 46
11.3   Barrick Sampling Preparation, Analyses, and Security 52
11.3.1   Sample Chain of Custody 52
11.3.2   Diamond Drilling Core Sampling 52
11.3.3   Sampling of Reverse Circulation Cuttings 53
11.3.4   Sample Preparation and Assay Procedures 53
11.3.5   Standards, Duplicates and Blanks 54
11.3.6   Check Assay Programs 59
11.3.7   Twin Hole Comparisons 59
11.3.8   Exploration drilling 2014 60
11.4   Data Entry Validation Controls 60
11.5   Opinion on Adequacy 61
12.   DATA VERIFICATION 61
12.1   Validation of Database 63
12.1.1   Received Data 63
12.1.2   Mechanical Audit 63
12.1.3   Overlaps 64
12.1.4   Gaps, Non-numeric Assay Values, and Negative numbers 65
12.1.5   Survey Data 66
12.1.6   Table Depth Consistency 66
12.1.7   Assay Certificates 66
13.   MINERAL PROCESSING AND METALLURGICAL TESTING 66
13.1   Mineral Processing and Metallurgical Testing 66
13.2   Column Leach Tests 67
13.3   Bottle Roll Tests 67
13.4   Gravity Tests 67
13.5   Bond Mill Work Index 68
13.6   Historical Test Work 68
13.7   Summary & Recommendations 69
14.   MINERAL RESOURCE ESTIMATE 69
14.1   Block Model Physical Limits 69
14.2   Data Used for the Grade Estimation 70
14.3   Data 70
14.4   Geologic Model 70
14.5   Exploratory Data Analysis 73

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14.6   Compositing 80
14.7   Capping 81
14.8   Grade Shell Generation 83
14.9   Variography 84
14.10   Estimation Methodology 90
14.11   Mineral Resource Classification 90
14.12   Density 91
14.13   Model Validation 91
14.13.1   Statistical Model Comparison 91
14.14   Swath Plots 94
14.15   Mineral Resources 96
14.16   Pit-constrained Mineral Resource 97
15.   ADJACENT PROPERTIES 98
15.1   Coeur Rochester 98
15.2   Lincoln Hill Property 98
15.3   Moonlight Project 98
16.   OTHER RELEVANT DATA AND INFORMATION 99
17.   INTERPRETATION AND CONCLUSIONS 99
17.1   Environmental 99
17.2   Geology and Deposit Type 99
17.3   Exploration, Drilling, and Analytical 99
17.4   Quality Assurance/Quality Control 99
17.5   Mineral Processing and Metallurgical Testing 100
17.6   Data Verification 100
17.7   Resource 100
18.   RECOMMENDATIONS 100
18.1   Geologic Model 101
18.2   Metallurgical Study 101
18.3   Geotechnical and Hydrogeological Study 101
18.4   Exploration Program 101
18.5   Budget 102
19.   REFERENCES 104

 

 

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LIST OF FIGURES

Figure Page

 

Figure 7-1  Geology of the Humboldt Range 23
Figure 7-2  Bedrock Geology Map of the Spring Valley Project 25
Figure 7-3  Conceptual Cross Section of Lithologies (Modified from Chadwick, 2012) 30
Figure 7-4  Coarse Gold from SV08-435 Drilled in the Big Leap Zone 33
Figure 7-5  Coarse Gold from SV08-410 at 310’ 34
Figure 7-6  Coarse Gold from SV08-436 Drilled at the South End of the Big Leap 34
Figure 10-1  Spring Valley Project Area Drill Hole Location Map 39
Figure 11-1  2006 – 2007 Blank Results 47
Figure 11-2  2006 – 2007 Standard MEG055 Results 48
Figure 11-3  2006 – 2007 Standard MEG160 Results 48
Figure 11-4  2006 – 2007 Standard MEG200 Results 49
Figure 11-5  2007 Standard MEG067 Results 49
Figure 11-6  2007 Standard MEG045 Results 50
Figure 11-7  2007 – 2008 Standard OREAS102 Results 51
Figure 11-8  2007 – 2008 Standard OREAS342 Results 51
Figure 11-9  Barrick 2011 Blank Results 55
Figure 11-10  Barrick 2011 Standard OxC72 Results 56
Figure 11-11  Barrick 2011 Standard OxG83 Results 56
Figure 11-12  Barrick 2011 Standard OxJ68 Results 57
Figure 11-13  Barrick 2011 Standard SE29 Results 57
Figure 11-14  Barrick 2011 Standard SE44 Results 58
Figure 11-15  Barrick 2011 Standard SG40 Results 58
Figure 11-16  Barrick 2011 Standard Si42 Results 59
Figure 14-1  Fault and Estimation Domain Plan View 72
Figure 14-2  Oblique View of Filtered Gold Values (Au≥0.002 oz/t) Limerick Trend Encircled 74
Figure 14-3  Gold (oz/t) Cumulative Frequency Plots by Lithology 76
Figure 14-4  Gold (oz/t) Box Plots by Lithology 77
Figure 14-5  Histogram of Samples within 5 Intervals (~25 ft) of a ≥ 0.022 oz/t Assay Interval 79
Figure 14-6  Samples above Cutoff within Range of Vein (>0.022 oz/t) Assay Interval 80
Figure 14-7  Composite Study 81
Figure 14-8  CFP Analysis by Domain 82
Figure 14-9  Grade Boundary 83
Figure 14-10  Example Variograms, 2100-2300 domain 85
Figure 14-11  Example Variograms, 3100-3300 domain 86
Figure 14-12  Example Variograms, 3100-3300 domains 87
Figure 14-13  Example Variograms, 4000-5000 domains 88
Figure 14-14  Example Variograms, 4000-5000 domains 89
Figure 14-15  Model Comparison Cumulative Frequency Plot (OK red, ID blue, NN Black) 94
Figure 14-16  Elevation Swath Model 95

 

 

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LIST OF TABLES

Table Page

 

Table 1-1  Mineral Resource Statement for the Spring Valley Project 5
Table 1-2  Proposed Budget 9
Table 4-1  Summary of Spring Valley Property Agreements 16
Table 4-2  Agency Permits and Authorizations* 18
Table 10-1  Summary of Drilling Campaigns in the Spring Valley Resource Area 38
Table 12-1  Mechanical Audit Errors 64
Table 12-2  Database Overlap Summary 65
Table 12-3  Interval Import Summary 65
Table 12-4  Certificate Validation Errors 66
Table 13-1  Composites 67
Table 14-1  Lithologic Groups 75
Table 14-2  Spring Valley Project Sample Assay Gold Descriptive Statistics (oz/t) 75
Table 14-3  Descriptive Statistics ≥0.002 oz/t Au by Lithology 76
Table 14-4  Capped Value by Domain 81
Table 14-5  Capped 10-foot Composite Statistics ≥0.001 oz/t 83
Table 14-6  Domain Variogram Parameters 89
Table 14-7  Estimation Parameters 90
Table 14-8  Rock Type Density Summary 91
Table 14-9  Descriptive Statistics for Domains 2100-2300 (Limb) 91
Table 14-10  Descriptive Statistics for Domains 3100-3300 (Main) 93
Table 14-11  Descriptive Statistics for Domains 4000 and 5000 (West 1 and West 2) 93
Table 14-12  Mineral Resource Statement for the Spring Valley Project, 97
Table 14-13  Pit-Constrained Resource for selected Whittle Shells. 97
Table 18-1  Proposed Budget 103

 

 

LIST OF Appendices

 

Claims List Exhibit 106

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1.SUMMARY
1.1Introduction

Gustavson Associates, LLC (“Gustavson”) was retained by Midway Gold Corp. (“Midway”) to update the National Instrument 43-101 (“NI 43-101”) Technical Report on Resources, Spring Valley Project (the “Project” or the “Spring Valley Project”) in Pershing County, Nevada, dated May 24, 2011 prepared by Gustavson. This report presents the results of the mineral resource estimate based on all available technical data and information as of August 1, 2014.

This report is prepared to fulfill Midway’s disclosure requirements to the Toronto Stock Exchange. It should be noted that this report is independent of and distict from any parallel resource estimates or scoping studies being carried out by the Spring Valley Venture, or by Barrick as operator.

This report has been prepared in accordance with the Canadian Securities Administrators (“CSA”) NI 43-101 and in compliance with the disclosure and reporting requirements set forth in Companion Policy 43-101CP and Form 43-101F1 (June 2011). Resources have been classified in accordance with standards as defined by the Canadian Institute of Mining, Metallurgy and Petroleum (“CIM”) “CIM Definition Standards - For Mineral Resources and Mineral Reserves”, prepared by the CIM Standing Committee on Reserve Definitions and adopted by CIM Council on December 17, 2010.

1.2Geology and Mineralization

The Spring Valley property is located in the Humboldt Range, a north-south oriented, up-thrown fault block (horst) bounded on the west by the Humboldt River valley and on the east by Buena Vista Valley. Quaternary alluvial deposits fill the intermontane basins and alluvial valleys.

The bedrock geology of the Humboldt range within 20 miles of the Spring Valley property consists of Triassic shales and carbonate rocks, a thick sequence of Permo-Triassic intermediate to felsic volcanic rocks, and a north-south trending belt of Tertiary volcanic rocks. Triassic leucogranite and Cretaceous granodiorite locally intrude the Permo-Triassic volcanic package.

The known Spring Valley mineral system is beneath an intermontane basin filled with post-mineral Quaternary alluvial deposits, thereby masking the bedrock geology immediately overlying or containing the mineralization. At the scale of the Spring Valley property position, the bedrock units are distributed in blocks aligned approximately north-south. The bedrock geology is dominated by the Limerick Formation in the western one-third of the property, the Rochester Formation in the central and eastern half of the property, and the Natchez Pass Limestone in the extreme northeast corner of the property. At this scale, the geology is segmented by a number of faults: a relatively older north to northeast trending set including the West Spring Valley, Limerick and Black Ridge Faults; and, northwest trending, steeply dipping cross faults with oblique or lateral offsets that displace the older north to northeast trending faults. The West Spring Valley fault is interpreted as a steeply east dipping normal fault, whereas the Black Ridge and Limerick faults are interpreted as moderate to high angle normal faults with westerly dips. The Limerick fault may be listric in character, with flattening dip at depth. East-west and northeasterly faults are also mapped, but are not part of the predominant fabric on the property.

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1.3Drilling and Exploration Status

Exploration work carried out by Midway and Barrick Gold Exploration Inc., a wholly owned subsidiary of Barrick Gold Corporation (“Barrick”) on the Spring Valley property has been and continues to be dominated by drilling. Midway and Barrick have also conducted extensive geological mapping and surface geochemical sampling campaigns in the surrounding hills and have conducted limited geophysical surveys in the basin to guide drilling. Early exploration work by previous operators included small-scale surface geochemical and geophysical surveys and drilling.

The Spring Valley resource area has been drilled with a total of 672 holes totaling 603,731 feet, including 531 Reverse Circulation (RC) drill holes totaling 428,500 feet and 141 diamond core holes totaling 173,011 feet.

1.4Environmental and Permitting
1.4.1Environmental Liabilities

Environmental liabilities at the property are limited to the construction of drill pads and roads, drilling, closure and reclamation of the currently permitted drilling program. This program is bonded with NDEP and the BLM. As work plans detailing the work, and reclamation cost estimates utilizing the states Standardized Reclamation Cost Estimator (SRCE), or equivalent, are required, the bond is considered adequate for the liability. Other potential environmental liabilities include the inadvertent impact of an unidentified cultural site or the allowance of invasion by a weedy species. The potential for impacting a cultural site or allowing the invasion of weedy species is considered low given the requirements for cultural surveys and the BLM’s Standard Operating Procedures (SOPs), which include general protection procedures to preclude weedy invasion. The potential for impacts to rangeland, impacts due to a hazardous or solid waste release, impact to water resources or impacts to a wetland is considered extremely low given the permitting requirements, SOPs, and Barrick’s operating practices.

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1.4.2Permits

According to the NDOM, all mining operations in Nevada are required to have:

·Legitimate mining claims registered with the BLM, or ownership or control of mineral rights on private land;
·An approved Plan of Operation from the BLM, the U.S. Forest Service or the Nevada Division of Environmental Protection, (NDEP); and
·Necessary state permits.
1.5Operational Permits and Jurisdictions

Midway and Barrick exploration activities are permitted under a Plan of Operations (PoO) approved by the BLM in July 2007, and Reclamation Permit No. 0258 approved by the NDEP in December 2006. All of the permits and approvals, and the bonds, were transferred to Barrick in 2009. A new or amended PoO will be required if disturbances beyond the currently approved 75 acres are necessary.

1.6Infrastructure

The Spring Valley property is accessed by Nevada State Route (SR) 50 (also known as Lovelock-Unionville Road), which extends eastward from US Interstate 80 at exit 119. SR 50 also serves as the main access to the Rochester Mine until a turnoff at Spring Valley Pass. Once in Spring Valley, access to the various parts of the Property is by dirt road. Alternatively, access is possible from the Buena Vista Valley to the east through Spring Valley Canyon on SR 50.

The nearest town to the Property is Lovelock, Nevada, which is situated along US Interstate 80 and hosts a population of 1,895 (Census 2012 data). The nearest city is Reno, Nevada, approximately 120 miles to the southwest, which hosts a population of 231,027 (Census 2012 data).

Power lines cross the property and ground water is abundant as evidenced by artesian wells in the main area of drilling. There is an adequate workforce in the surrounding region and the town of Lovelock. Northern Nevada is home to many gold mining operations with all associated support and supplies.

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1.7Mineral Processing and Metallurgical Testing

Barrick contracted with McClelland labs in Sparks, Nevada to complete a detailed metallurgical testing program on thirteen drill core composites from Spring Valley. The composite samples representing four rock types and three oxidation states were tested by column leaching, bottle roll and gravity methods. The composites were from a total of 355 split diamond drill core intervals, each interval representing approximately five feet. Grades of the composite samples ranged from 0.21 grams per tonne (gpt) to 5.07 gpt (0.006 oz/t to 0.148 oz/t); nine of the samples had grades less than 1.03 gpt (0.030 oz/t). The reported gold grades were determined by metallic screen fire assays. Column leach tests simulating heap leach conditions were conducted over 260 days, and yielded gold recoveries from 46% to 98% for all materials tested.

In December 2005, samples from eight drill holes were submitted for metallurgical testing at McClelland Laboratories Inc. in Sparks, Nevada by Midway. Select samples were combined to produce 19 composites for Gravity Recoverable Gold (GRG) testing. The composite samples were sequentially milled to progressively finer sizes, the resulting material (or gravity tailings after the first grind size) was processed using a laboratory Nelson Concentrator. The resulting concentrate and tailings were then assayed to determine gravity recovery of gold versus grind size. Testing in this way provides an estimate of the maximum recoverable gold values by gravity concentration. Recoveries for nine composites with head grades greater than 0.030 oz/st gold were between 67.5% and 96.5%.

The test samples described above are considered representative of the mineralization of the deposit as a whole. As of the date of this report, there are no processing factors that could have a significant effect on potential extraction.

1.8Mineral Resources

Zachary J. Black, SME-RM, an associate Resource Geologist with Gustavson is responsible for the estimation of the mineral resource herein. Mr. Black is a qualified person as defined by NI 43-101 and is independent of Midway and of Barrick. Gustavson estimated the mineral resource for the Spring Valley Project from drill-hole data, using controls from the main rock types and implicit grade shells with an Ordinary Kriging (“OK”) algorithm.

Gustavson received the exploration drill hole database on September 20, 2013. Drill hole data, including collar coordinates, down hole surveys, sample assay intervals, and geologic logs, were provided in a secure Microsoft Access database and as CSV files. The database is managed by Barrick under the Exploration, Development, and Joint Operating Agreement. A small number of additional drillholes have been completed by Barrick since the database was closed, but the results have not yet been received by Midway or by Gustavson. Gustavson does not expect that a few additional infill drillholes will materially impact the resource estimation.

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The present database has been updated to include the remaining 2010, 2011, 2012, and the available 2013 drill holes, which were completed since the previous mineral resource estimate. The drill hole database contains gold assay analytical information for 112,858 sample intervals from core, RC, and mud rotary drilling methods.

A visual evaluation of the assay and geologic data in cross-section and plan view, in conjunction with the proximity analysis, reveals that while it is difficult to substantiate lithologic or alteration based domaining, there exists a significant spatial correlation between the higher grade samples and disseminated mineralization. It is Gustavson’s opinion that the statistical analyses justify the use of a grade boundary at +0.003 oz/t, as a proxy for the mineralized alteration selvages and vein zones, and domaining the resource within this grade boundary is both reasonable and appropriate.

The mineral resource estimate for the Spring Valley Project is summarized in Table 1-1. This mineral resource estimate includes all drill data available to Midway and Gustavson as of the effective date of this report, and has been independently estimated by Gustavson. Mineral resources are not mineral reserves and may be materially affected by economic, environmental, permitting, legal, socio-economic, marketing, political, or other factors. In Table 1-1, mineral resources are reported above a +0.006 oz/t Au cut-off, assuming the three year trailing average gold price of US$1,537 per ounce. This cut-off reflects the potential economic, marketing, and other issues relevant to an open pit mining scenario based on a carbon recovery process following cyanide heap leaching. Gustavson cautions that economic viability can only be demonstrated through prefeasibility or feasibility studies.

Table 1-1 Mineral Resource Statement for the Spring Valley Project

Pershing County, Nevada, Gustavson Associates, LLC, August 1, 2014

  Measured Indicated Measured + Indicated Inferred
Cutoff Tons Gold Tons Gold Tons Gold Tons Gold
oz/t (x1000) oz/t t. oz. (x1000) (x1000) oz/t t. oz. (x1000) (x1000) oz/t t. oz. (x1000) (x1000) oz/t t. oz. (x1000)
0.008 60,100 0.023 1,410 116,400 0.021 2,400 176,600 0.022 3,810 46,400 0.019 880
0.006 75,300 0.020 1,510 147,300 0.018 2,610 222,600 0.019 4,120 62,100 0.016 990
*0.004 91,500 0.017 1,590 179,100 0.016 2,780 270,600 0.016 4,370 78,400 0.014 1,070

 

 

Note * based on discussion of cutoff presented above, material below 0.006 oz/t is not considered resource for the purposes of this report. 0.004 oz/t cutoff is presented for informational purposes and for consistency with prior reports. Note: Values may not sum due to rounding.

 

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1.9Interpretations and Conclusions
1.9.1Environmental

 There are no known environmental liabilities on the Spring Valley project.

1.9.2Geology and Deposit Type

The Spring Valley deposit is hosted within structurally prepared zones within a porphyry intrusion and overlying felsic volcanic rocks. Overall deposit geometry suggests that primary mineralizing fluid flow is related to steeply dipping, N20E to N30E- trending, deep-seated faults. Mineral emplacement is localized within structural preparation along these faults, as well as on contact horizons, deformation structures, and within permissive host rocks within a local graben /basin. The mineralization is associated with relatively thin, crystalline quartz veins that have large alteration selvages. In areas of dense quartz veining, the alteration selvages coalesce into regions of pervasively altered and veined rock.

1.9.3Exploration, Drilling, and Analytical

The property has been explored using a variety of techniques including mapping, geophysical surveys, and geochemical sampling. The Spring Valley resource area has been drilled with a total of 672 holes totaling 603,731 feet, including 531 Reverse Circulation (RC) drill holes totaling 428,500 feet and 141 diamond core holes totaling 173,011 feet.

All drill intervals were first assayed by a 30 gram fire assay and mineralized intervals have been systematically re-assayed using MSFA. Where available, the MSFA numbers were utilized in the resource estimate. The project data is stored in a secure database. Assay and geology data have been checked for accuracy for all programs prior to 2009, and spot checked in the Barrick programs from 2009 through 2013.

Gustavson is of the opinion that exploration activities, drilling, and analytical procedures are being conducted in manner that meets or exceeds industry best practice.

1.9.4Quality Assurance/Quality Control

Gustavson has reviewed the QA/QC assay programs and believes the programs provide adequate confidence in the data. Sample standard failures and the samples associated with erroneous blank samples have been reanalyzed prior to the completion of this Report and the results are comparable to the original assay.

1.9.5Mineral Processing and Metallurgical Testing

The Spring Valley project mineralized material is potentially amenable to both gravity and heap leach recovery methods.

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The test samples described in the Mineral Processing and Metallurgical testing item of this Technical Report are representative of the mineralization of the deposit as a whole. As of the date of this report, there are no processing factors that could have a significant effect on potential extraction.

1.9.6Data Verification

Gustavson received original assay certificates in pdf and comma delimited format for all samples included in the current drill hole database. A random manual check of 1,210 samples within the database against the original certificate revealed 3 total errors. The results of the analysis indicate that the data imported into the database matches the certificates 99.7% of the time with a confidence interval of ± 0.56% at a 95% confidence level. Gustavson considers the database adequate for estimation of mineral resource estimation purposes.

1.9.7Resource

Within the main portion of the deposit, drill density is within 150 foot spacing, which is adequate to describe measured and indicated resources, given the variogram and the relative continuity of the resource estimate. However, some areas of the deposit are still in need of infill holes. Closer spaced drilling in these areas will be required to further upgrade the resource classification. Additionally there are areas of the project which are open to expansion of extents of mineralization.

1.10Recommendations

Gustavson recommends the following program to advance the Spring Valley Project towards eventual development.

1.10.1Scoping Study

Gustavson recommends that Midway complete a scoping study (PEA) on the project to evaluate proposed mining and processing methodologies, and economics associated with the implementation of various crushing, grinding, heap leach, and gravity recovery circuit combinations. The PEA should be completed to 43-101 standards and designed to support Midway’s reporting requirements as an independent issuer.

1.10.2Geologic Model

Gustavson understands that Barrick is undertaking systematic relogging of the drilling including trace element analysis in an effort to refine the geologic and alteration model for the deposit. Gustavson recommends that Midway maintain a level of engagement in the relogging parameters and process in order to facilitate information transfer and share interpretive insights. The results of this logging should be considered in any resource updates moving forward.

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1.10.3Metallurgical Study

Existing metallurgical studies have established that gold at Spring Valley is amenable to cyanidation and to gravity separation. Gustavson recommends that additional metallurgical studies be completed to evaluate the mix of mineral processing methods best suited for the mineralization at Spring Valley. The evaluation should include the study of conventional cyanidation at different crush sizes, as well as the impact of gravity concentration at different steps in the process stream. Testwork should include samples of mineralization of various alteration and oxidation types.

1.10.4Geotechnical and Hydrogeological Study

Gustavson recommends that the existing Golder pit slope analysis and geotechnical studies be reviewed to identify critical geotechnical areas and to define a geotechnical exploration program to support final design parameters. The Golder geotechnical studies should form the basis for mine design for the proposed PEA. Additionally, Gustavson recommends that the preliminary hydrogeological studies be reviewed to determine critical path to support project water needs, secure remaining required water rights, and address potential pit dewatering concerns. This information should be included in the support of a proposed PEA.

1.10.5Environmental Permitting

Gustavson recommends that continued work towards meeting the requirements of the State of Nevada to permit a mine on public land should include in the short term:

  • Finalize Class III Cultural Survey report;
  • Endangered Species Act (ESA) and other biological requirements; and
  • Ongoing collection and evaluation of environmental baseline data.
  • Installation and monitoring of groundwater monitoring as recommended for hydrologic models and baseline studies.
1.10.6Exploration Program

Continued exploration diamond core drilling should be targeted in three areas within and adjacent to the immediate mineral resource area:

  • Infill and step out drilling at the furthest south extent of drilling near the flanks of Gold Mountain.
  • Exploration drilling along the Wabash fault that bisects the main Spring Valley resource. Extensions of this fault to both the east and west of the main resource have the potential to host mineralization that has not yet been tested. Placer gold is common along the trace of the fault to the SE.
  • Infill and step out drilling targeting the lower Felsic Porphyry unit at depth in the main resource area, to the northern extents of the project and along the eastern Limerick fault.
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  • Limited infill drilling, primarily in those areas where substantial in-pit inferred mineralization has been identified, or in areas of high potential for pit expansion.
1.10.7Budget

Under the terms of the Joint Venture Agreement, Barrick has assumed the responsibility for the exploration and development activities. The Spring Valley Joint Venture has a project development budget which includes most of the recommendations listed above. The SVV project is operated by Barrick, with 75% of the costs borne by Barrick, and the remainder by Midway Gold.

Table 1-2 presents the 2014-2015 development and exploration budgets for the Spring Valley Venture, as well as budget line items for Midway based on the recommendations described above.

Table 1-2 Proposed Budget

Midway Studies & Reports Costs (US$)
Metallurgical Studies 120,000
Geotechnical Review 30,000
Hydrogeologic Review 30,000
Scoping Study (PEA) 150,000
Midway Reporting Subtotal $330,000
Spring Valley Venture PreFeasibility Study
Hydrology Studies & Test Wells 2,125,000
Geochemistry, including ARD 982,000
Geotechnical 500,000
Metallurgy 1,070,000
Mine Planning and Site Design 700,000
Permit Development 150,000
Archaeological, Community & Related 285,000
Environmental Studies 875,000
Land & Water Rights 3,100,000
Condemnation Drilling 500,000
Subtotal $ 10,287,000
Midway Share at 25% $ 2,571,750
Spring Valley Venture Exploration
Exploration Program 2014 - 2015 12,000,000
Subtotal $ 12,000,000
Midway Share at 25% $ 3,000,000
Total Budget (Midway Share)
Total Budget $5,901,750

 

 

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2.INTRODUCTION AND TERMS OF REFERENCE

Gustavson Associates, LLC (Gustavson) was commissioned by Midway Gold Corp. (Midway) to prepare an update to the Mineral Resources and resulting Technical Report on Resources for the Spring Valley Project (or the Project) site in Pershing County, Nevada. The purpose of this report is to present the findings of the resource estimation in accordance with Canadian National Instrument 43-101 Standards of Disclosure for Mineral Projects (NI 43-101), NI 43-101 Form F1, and Canadian Institute of Mining, Metallurgy and Petroleum (CIM) “Best Practices and Reporting Guidelines.” This Technical Report is part of an ongoing effort by Midway to develop the Spring Valley Project.

This report is prepared to fulfill Midway’s disclosure requirements to the Toronto Stock Exchange. It should be noted that this report is independent of and distict from any parallel resource estimates or scoping studies being carried out by the Spring Valley Venture, or by Barrick as operator.

Items 15 through 22 of Form 43-101F1 (Mineral Reserve Estimates, Mining Methods, Recovery Methods, Project Infrastructure, Market Studies and Contracts, Environmental Studies, Permitting and Social or Community Impact, Capital and Operating Costs, and Economic Analysis, respectively) are not required for a Technical Report on Resources and are not included in this report.

2.1Qualifications of Consultants

The Qualified Persons (QP’s) responsible for this report are:

  • William J. Crowl, R.G., QP MMSA, Vice President, Mining, Gustavson is a QP as defined by NI 43-101 and is responsible for Sections 1-8, and 15-19.
·Zachary J. Black, SME-RM, Associate Resource Geologist, Gustavson is a QP as defined by NI 43-101 and is responsible for Sections 9-12 and 14.
  • Deepak Malhotra, PhD., SME-RM, President, RDi is a QP as defined by NI 43-101 and is responsible for Section 13.
2.1.1Details of Inspection

Gustavson Associates representatives William J. Crowl and Zachary J. Black visited the Spring Valley Project on October 24, 2013. While on site, Mr. Crowl and Mr. Black conducted general geologic field reconnaissance and discussed in detail core drilling operations, sampling, and transportation with Barrick and Midway personnel. Mr. Crowl visited the Spring Valley project again on June 18th, 2014 and directly observed drilling and sampling practices at the project site. For the 2014 drill program, core splitting and sampling are being carried out at Barrick’s Turquoise Ridge Facility. Accordingly, Mr. Crowl visited Turquoise Ridge on June 17th 2014 to directly observe the splitting and sampling procedures being employed for the 2014 Spring Valley drill program.

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2.1.2Sources of Information

The information, opinions, conclusions, and estimates presented in this report are based on the following:

  • Information and technical data provided by Midway;
  • Observations made by Qualified Persons on site;
  • Review and assessment of previous investigations;
  • Assumptions, conditions, and qualifications as set forth in the report; and
  • Review and assessment of data, reports, and conclusions from other consulting organizations and previous property owners.

 

Gustavson sourced information from referenced documents as cited in the text and those summarized in Section 19, References, of this report.

2.2Effective Date

This report was completed based upon information available at the effective date of this report, August 1, 2014.

2.3Units of Measure

Unless stated otherwise, all measurements reported here are in imperial units, tons are short tons, and currencies are expressed in constant US dollars. Precious metal content is reported in troy ounces per short ton (oz/t).

 

 

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Common Units

 

Above mean sea level amsl
Cubic foot feet3
Cubic inch in3
Cubic yard yd3
Day d
Degree °
Degrees Fahrenheit °F
Foot feet
Gallon gal
Gallons per minute (US) gpm
Grams per tonne g/t
Greater than >
Hectare ha
Hour h
Inch "
Kilo (thousand) k
Less than <
Micrometre (micron) µm
Milligram mg
Ounces per ton oz/t
Parts per billion ppb
Parts per million ppm
Percent %
Pound(s) lb
Short ton (2,000 lb) st
Short ton (US) t
Specific gravity SG
Square foot feet2
Square inch in2
Yard yd
 

 

 

 

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Metric Conversion Factors (divided by)

Short tons to tonnes 1.10231
Pounds to tonnes 2204.62
Ounces (Troy) to tonnes 32,150
Ounces (Troy) to kilograms 32.150
Ounces (Troy) to grams 0.03215
Ounces (Troy)/short ton to grams/tonne 0.02917
Acres to hectares 2.47105
Miles to kilometres 0.62137
Feet to metres 3.28084

 

 

Abbreviations

American Society for Testing and Materials ASTM
Absolute Relative Difference ARD
Atomic Absorption Spectrometry AAS
Bureau of Land Management BLM
Canadian Institute of Mining and Metallurgy CIM
Diamond Drill DD
Global Positioning System GPS
Internal Rate of Return IRR
Metallic Screen Fire Assay MSFA
National Instrument 43-101 NI 43-101
Nearest Neighbour NN
Net Smelter Royalty NSR
Net Present Value NPV
Probability Assigned Constrained Krigging PACK
Reverse Circulation RC/RCV
Rock Quality Designation RQD
Selective Mining Unit SMU
Universal Transverse Mercator UTM

 

 

 

 

 

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3.RELIANCE ON OTHER EXPERTS

During preparation of this report, Gustavson fully relied upon information provided by Midway regarding property ownership, mineral tenure, permitting, and environmental liabilities as described in Items 4 and 5 of this report.

Midway relies upon the accuracy and completeness of data provided by Barrick pursuant to the Exploration, Development, and Joint Operating Agreement dated March 9, 2009.

Based on the review conducted in 2011 and the further efforts documented in this report, Gustavson considers that the data provided by Barrick is sufficient for the purposes of a resource estimate.

 

4.PROPERTY DESCRIPTION AND LOCATION
4.1Property Location

The Spring Valley property is located in Pershing County, Nevada 20 miles northeast of Lovelock within the Spring Valley Mining District. It is situated three miles north of the Rochester silver-gold mine in the Humboldt Range. The Spring Valley deposit lays 100% within the Spring Valley area of interest and is within the control of Midway and Barrick’s joint venture (the “Spring Valley Venture”). The Participants directly control approximately 10,140 gross acres on 642 contiguous unpatented lode and placer mining claims plus 1,550 gross acres of fee land.

The Property is located on the USGS Lovelock 1:100,000 scale topographic map and the USGS Rochester and Fitting 1:24,000 scale, 7.5 minute series quadrangle maps. It is centered at latitude 40° 20’ North and longitude 118° 08’ West. The principal area of known mineralization on the Spring Valley property is located within the southern half of Sections 34 and 35, Township 29 North, Range 34 East (T29N, R34E) Mount Diablo Base and Meridian (MDBM). Mineralization also occurs at the Limerick target in Section 4, Township 28 North, Range 34 East (T28N, R34E) MDBM; at the Golden Gate target in Section 8, T28N, R34E; and at the American Canyon target in Section 14, T28N, R34E.

Unpatented mining claims are kept active through payment of a maintenance fee due on 31 August of each year. A complete list of claims is presented in Appendix A.

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4.2Agreements and Royalties
4.2.1Barrick Agreement

On March 9, 2009, Midway and Barrick Gold Exploration Inc., a wholly owned subsidiary of Barrick Gold Corporation (“Barrick”), signed an agreement for the exploration, development, and eventual joint operating activities at the project. On Nov 15, 2013, Barrick completed the $38 million expenditure required to earn a 70% interest at Spring Valley. As of Feb 24, 2014, the companies completed formation of the joint venture (the “Spring Valley Venture”) with Barrick holding a 70% interest and Midway holding a 30% interest.

On July 9, 2014, Midway elected to have Barrick carry Midway to a production decision and arrange financing for Midway’s share of mine construction expenses. The carrying and financing costs plus interest are to be recouped by Barrick from 90% of Midway’s share of production once production has been established. Accordingly, upon completion of construction of the mine, Barrick will earn an additional 5% (75% total interest.)

4.2.2Agreements

The property agreements for the Spring Valley project are summarized in the table below. The table documents the nature of title, obligations to retain the property, royalties, payments, and expiration dates of the agreements. Claims are unpatented mining claims on land administered by the Bureau of Land Management.

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Table 4-1 Summary of Spring Valley Property Agreements

 

Ownership Agreement Date Expiry Owner (source) Claims Gold Royalty Approximate Acreage* Payments
Optioned 10/30/2006 10/30/2016 (may be extended ) Chabino 2 3% NSR 42 $6,000/yr
Optioned 6/10/2007 6/10/2017 purchase complete G. Duffy 2 - 42 $12,000/yr plus periodic option payments
Optioned 4/25/2006 4/25/2016 (may be extended) L. Duffy 12 3% NSR 248 $36,000/yr
Optioned 7/17/2006 7/17/2016 (may be extended) Rowe and Stoeberl 46 3% NSR 951 $20,000/yr
Owned 9/10/2003 - Midway Gold (Echo Bay) 28 2% NSR 579 -
Owned 1/25/2006 - Midway Gold (Coeur) 98 3% NSR 2087 -
Owned 7/3/2003, amended 8/15/2003 - Midway Gold (Schmidt) 44 2-7% NSR 909 -
Owned - - Midway Gold 410 - 8452 -
Owned 5/5/2006 - Midway Gold (Seymork) Fee 3% NSR 320/770 -
Owned 9/7/2005 - Midway Gold (NLRC) Fee - 544/0 -
Owned 8/29/2006 - Midway Gold (Sentman) Fee - 40/10 -
Leased 12/2/2010 12/2/2016 (may be extended) Barrick Agreement with Third Party Fee 3% NSR 0/544 $300,000/yr

0/76

 

0/120

Owned 10/01/2010   Barrick Agreement with Third Party Fee - 76/0 -
            *Surface/Mineral  

 

 

4.3Environmental Liabilities

Environmental liabilities at the property are limited to the construction of drill pads and roads, drilling, closure and reclamation of the currently permitted drilling program. This program is bonded with NDEP and the BLM. As work plans detailing the work, and reclamation cost estimates utilizing the states Standardized Reclamation Cost Estimator (SRCE), or equivalent, are required, the bond is considered adequate for the liability. Other potential environmental liabilities include the inadvertent impact of an unidentified cultural site or the allowance of invasion by a weedy species. The potential for impacting a cultural site or allowing the invasion of weedy species is considered low given the requirements for cultural surveys and the BLM’s Standard Operating Procedures (SOPs), which include general protection procedures to preclude weedy invasion. The potential for impacts to rangeland, impacts due to a hazardous or solid waste release, impact to water resources or impacts to a wetland is considered extremely low given the permitting requirements, SOPs, and Barrick’s operating practices.

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4.4Permits

According to the NDOM, all mining operations in Nevada are required to have:

·Legitimate mining claims registered with the BLM, or ownership or control of mineral rights on private land;
·An approved Plan of Operation from the BLM, the U.S. Forest Service or the Nevada Division of Environmental Protection, (NDEP); and
·Necessary state permits.

Spring Valley Venture exploration activities are permitted under a Plan of Operations (POO) approved by the BLM in July 2007, and Reclamation Permit No. 0258 approved by the NDEP in December 2006. All of permits and approvals, and the bonds, were transferred to Barrick in 2009. A new or amended POO will be required if disturbances beyond the currently approved 75 acres are necessary.

The latest NDEP/BLM Annual site inspection was conducted July 8th, 2014. No issues were reported by the agencies.

Water for exploration drilling is supplied by two water wells drilled under a temporary grant of water rights from the Nevada Division of Water Resources. The current 180 Day permit is in effect as of April 17th, 2014.

Table 4-2 provides a general summary of permits required by Federal State and Local government entities for mining or milling operations in the state of Nevada.

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Table 4-2 Agency Permits and Authorizations*

 

Permit/Authorization Agency
Federal  
Activities in Wetlands and/or Waters of the U.S. U.S. Army Corps of Engineers
Amended Exploration Plan of Operations BLM
Endangered Species Act Compliance U.S. Fish and Wildlife Service
Mine Plan of Operations BLM
Notice of Commencement of Operation Northern Nevada Mine Safety & Health Administration
Purchase, Transport, or Storage of Explosives Bureau of Alcohol, Tobacco and Firearms, for Northern Nevada
Right of Way for Electrical Transmission on BLM-Administered Land BLM
Road Access (R/W) on BLM Administered Land BLM
Use of BLM-Administered Land BLM
State  
Air Quality Operating Permit Nevada Division of Environmental Protection, Bureau of Air Quality
Annual Status and Production Report Nevada Division of Minerals
Approval to Operate a Solid Waste System Nevada Division of Environmental Protection, Bureau of Waste Management
Department of Transportation Nevada Department of Transportation
Fire and Line Safety Nevada State Fire Marshall
Ground Water Permit Nevada Division of Environmental Protection, Bureau of Water Pollution Control
Hazardous Materials Permit Nevada State Fire Marshal Division, Hazardous Materials Section
Historic Preservation Nevada Historic Preservation Office
Mine Registry Forms Nevada Division of Minerals
Industrial Artificial Pond Permit Nevada Division of Wildlife
Mineral Exploration Hole Plugging Nevada Division of Water Resources
Mining Reclamation Permit Nevada Division of Environmental Protection – Bureau of Mining Regulation and Reclamation, Reclamation Branch
Notification of Opening & Closing Mines Nevada State Mine Inspector
Permit to Appropriate the Public Waters Nevada Division of Water Resources
Permit for Occupancy (Encroachment Permit) Nevada Department of Transportation
Permit for Sanitation Facilities Nevada State Health Division Bureau of Health Protection Services
Protection of Wildlife Nevada Division of Wildlife
Stormwater General Permit Nevada Division of Environmental Protection, Bureau of Water Pollution Control
Surface Disturbance Permit Nevada Division of Environmental Protection – Bureau of Air Pollution Control
Water Pollution Control Permit Nevada Division of Environmental Protection – Bureau of Mining, Regulation and Reclamation, Regulation Branch
Local**  
Building Permit  
General Plan  
Special Use Permit  

 

* Permits listed are general in nature; all items listed are not necessarily specific to Midway or Barrick.

** Local permits presented are general in nature.

 

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Barrick continues to move forward with conducting environmental studies on the project property. Gustavson knows of no other significant factors or risks that may affect access, title, or the ability to perform work on the Spring Valley property.

 

5.ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE AND PHYSIOGRAPHY
5.1Accessibility

The Spring Valley property is accessed by Nevada State Route (SR) 50 (also known as Lovelock-Unionville Road), which extends eastward from US Interstate 80 at exit 119. SR 50 also serves as the main access to the Rochester Mine until a turnoff at Spring Valley Pass. Once in Spring Valley, access to the various parts of the Property is by dirt road. Alternatively, access is possible from the Buena Vista Valley to the east through Spring Valley Canyon on SR 50.

The nearest town to the Property is Lovelock, Nevada, which is situated along US Interstate 80 and hosts a population of 1,895 (Census 2012 data). The nearest city is Reno, Nevada, approximately 120 miles to the southwest, which hosts a population of 231,027 (Census 2012 data).

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5.2Climate

The climate in the Spring Valley area is typical for northwestern Nevada. Average monthly high temperatures range from 82 to 94° F in the summer and 42° to 55° F in the winter. Yearly rainfall averages approximately 6 inches with nearly uniform distribution from October through June. July, August, and September are typically hot and dry months; December, January, and February receive the bulk of the snowfall (Desert Research Institute, 2010).

Exploration and operations are possible year round, although snow levels in winter and wet conditions in late autumn and in spring can make travel on dirt and gravel roads difficult.

5.3Local Resources and Infrastructure

Power lines cross the property and ground water is abundant as evidenced by artesian wells in the main area of drilling. There is year-round road access directly to the project via Nevada state highway 50. The interstate (I80) runs approximately 10 miles west of the property. There is an adequate workforce in the surrounding region and the town of Lovelock. Northern Nevada is home to many gold mining operations with all associated support and supplies. 

Coeur Mining’s Rochester operation is situated on adjacent claims to the south of the Spring Valley Project and has the necessary infrastructure to support their operation on site. Electrical power is supplied to the site by a public utility company (NV Energy) via a 69KV overhead transmission line.

Emergency services, including law enforcement, are located approximately 25 miles from the site in Lovelock. Regulatory and other off-site services are located throughout the county and region and are typical of standard United States agencies.The Spring Valley Venture controls sufficient surface rights within Spring Valley and the lower Buena Vista basin to support an open pit operation and the associated waste rock disposal and heap leach facility.

5.4Physiography

Spring Valley is a large (approximately two square miles) intermontane basin in the central part of the Humboldt Range. The valley floor slopes gently to the east and ephemeral streams on its surface drain into Spring Valley Canyon at its eastern margin. Elevation at the Property ranges from 5,120 to 6,040 feet above mean sea level and the topographic relief can be characterized as gentle to moderate.

Vegetation is typical of the Basin and Range physiographic province. The Property is covered by sagebrush, grass, and various other desert shrubs.

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5.5Water Rights

Proposed mining operations at Spring Valley will require significant water rights for dust reduction, exploration drilling, process water, as well as potable water for domestic use and site facilities.  The Spring Valley Venture has identified properties within the Buena Vista Valley with sufficient water rights to support mine operations and is in the process of securing such rights.  Regulatory approval will be required to modify the water rights for use by the mine.

 

6.HISTORY

Gold, silver, lead, mercury, copper, antimony, and sericite-pyrophyllite have been produced from the Spring Valley Mining District since its discovery in 1868 (Tingley, 1992). Placer gold was discovered in 1875 and was worked extensively during the period 1880-1890 (Johnson, 1977). The placers are said to have been the most productive in Nevada: placer production from Spring Valley and American Canyons were estimated at $10 million (Ransome, 1909). The gravel deposits were up to 100 feet in depth or more and the gold recovered from them was generally coarse, though fine-grained gold was present and likely more abundant (Johnson, 1977).

The Wabash lead-silver mine, located on the eastern margin of the Property, was worked during the period of 1935 to 1938. Production recorded for 1938 was 170 tons of ore containing 1 oz gold, 6,774 oz silver, 651 lb copper, and 9,514 lb lead (Johnson, 1977). Mineralization at the Wabash mine consists of argentiferous galena and sphalerite in the matrix of intensely brecciated rocks in a fault zone.

Modern exploration at Spring Valley began in 1996 by Kennecott. Four reverse circulation (RC) holes, totaling 2,220 feet, were drilled across the basin in an effort to discover the source of the placer gold in Spring Valley Canyon. Hole KSV-2 intersected 40 feet grading 0.023 oz/t gold at the southeast edge of what is now known as the Pond Zone.

Echo Bay acquired the property in 2000 and drilled ESV-2, intersecting 145 feet grading 0.075 oz/t gold. Subsequent drilling by Echo Bay focused on step-out drilling from ESV-2, coring the mineralized zone and drilling exploration targets to the northwest. During the 2001-2002 drill campaign, Echo Bay completed 19 RC holes totaling 10,940 feet and 2 diamond drill (DDH) holes totaling 1,653 feet.

There were no historic mineral resources estimated for the Spring Valley project prior to Midway’s acquisition of the property.

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7.GEOLOGICAL SETTING AND MINERALIZATION
7.1Regional Geologic Setting

The Spring Valley property is located in the Humboldt Range, a north-south oriented, up-thrown fault block (horst) bounded on the west by the Humboldt River valley and on the east by Buena Vista Valley. Quaternary alluvial deposits fill the intermontane basins and alluvial valleys.

The bedrock geology of the Humboldt range within 20 miles of the Spring Valley property consists of Triassic shales and carbonate rocks, a thick sequence of Permo-Triassic intermediate to felsic volcanic rocks, and a north-south trending belt of Tertiary volcanic rocks (Figure 7-1). Triassic leucogranite and Cretaceous granodiorite locally intrude the Permo-Triassic volcanic package.

The oldest rocks exposed in the central Humboldt Range are a series of Permo-Triassic volcanic and metavolcanic rocks, named the Koipato Group, that include, from oldest to youngest, the Limerick Greenstone, the Rochester Rhyolite, the Weaver Rhyolite, and their intrusive equivalents (rhyolite porphyry and leucogranite). The Koipato Group is interpreted as representing bimodal volcanism in a back-arc setting that was subsequently accreted onto the continental margin (LeLacheur et al., 2009). Contacts of the Koipato Group with the Triassic Natchez Pass and Prida Limestones to the north, west and on the eastern flank of the range are all fault contacts. Cretaceous granodiorite locally intruded the Permo-Triassic units. Quaternary alluvial and colluvial deposits unconformably overlie the older bedrock units. North-south, north-northwest, and north-northeast normal faults are the dominant structural features in the region.

The Humboldt Range in the region surrounding the Spring Valley project is well-mineralized. Styles of mineralization in the central Humboldt Range include base and precious metal vein and vein-stockwork mineralization and Tertiary sediment-hosted gold deposits. Examples of vein/vein stockwork systems include Spring Valley, Rochester, Nevada Packard, the Unionville district and the Dun Glen district. Examples of Tertiary sediment-hosted gold mineralization in the region include Florida Canyon, Relief Canyon, Standard, and Willard.

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Figure 7-1 Geology of the Humboldt Range

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7.2Local Geologic Setting

The known Spring Valley mineral system is beneath an intermontane basin filled with post-mineral Quaternary alluvial deposits, thereby masking the bedrock geology immediately overlying or containing the mineralization. At the scale of the Spring Valley property position, the bedrock units are distributed in blocks aligned approximately north-south. The bedrock geology is dominated by the Limerick Formation in the western one-third of the property, the Rochester Formation in the central and eastern half of the property, and the Natchez Pass Limestone in the extreme northeast corner of the property (Figure 7-2). At this scale, the geology is segmented by a number of faults: a relatively older north to northeast trending set including the West Spring Valley, Limerick and Black Ridge Faults; and, northwest trending, steeply dipping cross faults with oblique or lateral offsets that displace the older north to northeast trending faults. The West Spring Valley fault is interpreted as a steeply east dipping normal fault, whereas the Black Ridge and Limerick faults are interpreted as moderate to high angle normal faults with westerly dips. The Limerick fault may be listric in character, with flattening dip at depth. East-west and northeasterly faults are also mapped, but are not part of the predominant fabric on the property.

The bedrock geology beneath the Quaternary alluvial cover has been interpreted and compiled by Midway and other workers based on drill hole information. The surficial and subsurface bedrock geology within the Spring Valley intermontane basin is described below as modified from Stiles (2008), LeLacheur et al. (2009), Neal (2004), and Neal & LeLacheur (2010).

The Spring Valley basin is completely covered by between 50 and 375 feet of Quaternary alluvium, consisting mainly of valley fill gravels and mud flow deposits (Figure 7-2). Bedrock geology beneath the alluvium features northeast trending felsic volcanic and volcaniclastic rocks intruded by a feldspar porphyry intrusion at depth (Figure 7-2). The rhyolitic vent complex is interpreted as coeval with development of the Rochester and/or Weaver Rhyolites, and is thereby believed to be Triassic in age.

Structures in the alluvium covered area are interpreted primarily from logging of drill core and chips and, to a lesser degree, from geophysical surveys, mapping and projection of faults observed in the hills surrounding the basin. Faults within the area covered by alluvium are difficult to document, and are inferred from offsets in geologic units and/or trends of mineralized/altered zones and gold grade distributions. Many faults appear to have complex, long-lived histories, and may have developed prior to or at the time of emplacement of the Spring Valley rhyolitic vent complex, with reactivations during accretion of the Koipato Group, and Basin and Range development. Many structures thereby appear syn- to late-mineral relative to alteration, mineralization and intrusion. The lack of detail regarding the timing and location of significant structures impacts the modeling of the associated gold mineralization, making determination of modeling domains difficult. Gustavson recommends a better understanding of the structural geology and its impact on the distribution of mineralization, alteration and rock types be developed.

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Figure 7-2 Bedrock Geology Map of the Spring Valley Project

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7.3Lithologic Units

Lithologies recognized under the alluvium covered area at the Spring Valley prospect are shown in conceptual cross section in Figure 7-3, and are listed below.

7.3.1Quaternary Alluvium (Qal)

Alluvial gravels with coarse angular clasts of local lithologies cover much of the intermontane basin. Gold mineralization, possibly placer deposits, has been identified in places at the base of this unit but this mineralization is not included in the mineral resource estimate.

7.3.2Limerick Greenstone:

The Limerick Greenstone is comprised of a thick pile of intermediate to mafic flows and interbedded volcaniclastic sediments. The base of the sequence is not exposed on the project. Felsic sills and dikes intrude the greenstone. Small felsic flow domes of the Rochester Rhyolite are present in the upper part of the Limerick sequence.

At Spring Valley, the Limerick Greenstone can be divided into an upper greywacke, andesite flows, and intrusive gabbro. The upper greywacke is a fine- to coarse-grained, gray-green, chlorite-altered sandstone and mudstone. It has local cross bedding and variable thicknesses of fining-upward sequences that are common to submarine turbidite deposits. Thin interbeds of boulder-to-cobble conglomerate become increasingly common toward the top of the unit.

Underlying the greywacke is dark gray to black, fine-grained, conchoidally fractured andesite. This andesite has local phenocrysts of hornblende or plagioclase. Lithophysae are locally common. A dark green, fine grained mafic intrusive or gabbro is observed within the andesitic sequence. These sills or dikes contain fine crystals of hornblende and/or pyroxene and, less commonly, plagioclase. No large bodies of this unit have been identified to date.

All of the greenstone rocks have a weak metamorphic overprint of gray sericite, gray-green chlorite, and minor green epidote. The green coloration is caused by a strong chlorite content that may have formed as a regional propylitic alteration. Foliation is poorly developed on the east side of Spring Valley. A more pronounced phyllitic foliation is observed on the west side of the valley. Veins and local replacement pods of calcite are common and may be related to mineralization. Quartz-carbonate-chlorite veining is common. The chlorite in the veins appears to be psuedomorphs after tourmaline. These veins do not usually carry gold.

7.3.3Rochester Rhyolite

The Rochester Rhyolite is comprised of massive and flow banded rhyolite flows, flow domes, tuffs, tuffaceous sediments, and a coarse, volcanic-derived breccia interpreted to be part of a diatreme vent or eruption apron. All of these rocks have a high K-feldspar content. Felsic dikes and sills which are found throughout the Rochester are thought to be intrusive equivalents to the volcanic flows.

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Lithologies identified from drilling within the Rochester at Spring Valley include:

7.3.4Upper Rhyolite

The upper rhyolite is a dark brown to orange, massive rhyolite. Small plagioclase phenocrysts, larger K-feldspar phenocrysts and, rarely, small quartz phenocrysts are in a matrix of microcrystalline quartz and K-feldspar. Thin interbeds of tuffaceous sandstones or conglomerate are common. K-feldspar spherulites (up to 3 cm across), lithic fragments (up to 1-2 cm across), and more rarely, flow-banding are locally present within the unit. Perlitic cracks in the matrix were observed in thin section. In outcrop, this unit is locally bleached, or moderately sericitized, and weathers to a burnt brown color. The top of the unit has been removed by erosion, but in the area drilled the remaining unit is between 250 and 300 feet thick.

7.3.5Siltstone

Directly beneath the upper rhyolite is 50 to 150 feet of white to gray-brown thinly bedded siltstone or fine sandstone. It is locally cross-bedded and has local graded bedding. Distribution of the siltstone in drill holes suggests it was deposited in a shallow lake or sea that formed between flow events. The unit contains abundant fine grained, disseminated tourmaline needles.

7.3.6WT Rhyolite

The WT rhyolite is a dark gray, dark purple or dark-brown banded rhyolite that is a distinctive marker horizon in parts of the project. The unit is characterized by distinctive irregular and discontinuous flow banding that is often contorted. The flow banding forms from layers of darker gray microcrystalline quartz and K-feldspar alternating with lighter gray layers of mostly microcrystalline K-feldspar

The planar orientation of the flow banding where measured in outcrop or seen in oriented core commonly strikes 170°-190° with a near vertical dip. This is nearly perpendicular to the bedding orientation. In portions of the project area, the upper part of this unit is a massive, gray, lithic rhyolite with barely visible flow banding. Near mineralized areas, the flow banding is very pronounced where it is exaggerated by hydrothermal alteration.

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7.3.7Breccia/Conglomerate

Underlying the WT Rhyolite is a breccia with large rounded to subangular clasts in a matrix of smaller rock fragments. It is largely clast-supported, and poorly sorted. Clasts include fragments of silicified limestone and a variety of intrusive and extrusive igneous rocks not seen elsewhere in Spring Valley, as well as local units. In one area, the breccia cuts upward through the WT rhyolite and part of the siltstone. Fragments of these rock types were observed deeper in the breccia. This feature was interpreted as a diatreme and was the focus of drilling in the early stages of the project. Adjacent to the pipe, breccia is conformably overlain by the WT rhyolite and is interpreted to be an eruption apron. The base of the breccia has been obliterated by intrusion of feldspar porphyry.

7.3.8Intrusive rocks

The Rochester Rhyolite and Limerick Greenstone were intruded by a shallow, hypabyssal intrusion that underlies the volcanic rocks throughout most of Spring Valley. The intrusion has distinct feldspar phenocrysts in a fine-grained matrix and has been designated as the feldspar porphyry (FP). The top of the intrusion is very irregular and includes apophyses that form sills and dikes that extend into faults, and along contacts of the Limerick and Rochester rocks. The eastern margin of the intrusion formed a west-dipping dike along the Limerick fault between the Limerick Greenstone and Rochester Rhyolite. This dike is strongly mineralized.

Hand samples of the feldspar porphyry intrusion are dark brown or gray, with medium-grained, white feldspar phenocrysts in an aphanitic matrix. Fine-grained, black biotite phenocrysts are also usually present. The feldspar porphyry has not been dated isotopically, but textures and composition are similar to the Rochester Rhyolite. Other workers (Wallace, 1969) have mapped similar rocks in surface outcrop as being coeval with the Rochester Rhyolite.

West of Spring Valley a swarm of quartz feldspar porphyry sills cut the Limerick Greenstone. The sills have feldspar phenocrysts in a greenish aphanitic groundmass and locally contain fine grained quartz phenocrysts. Many of the sills have sericitic alteration and fine grained disseminated limonite after pyrite cubes. The sills consistently host sheeted quartz and quartz-tourmaline veins, some with anomalous gold values. These sills are similar in character to the dike on the eastern margin of the deposit area that grades into the feldspar porphyry in zones of strong alteration and gold mineralization.

Intrusive bodies of biotite-feldspar porphyry and plagioclase porphyry are found north and east of Spring Valley. These are thought to be related to the feldspar porphyry or Rochester Rhyolite, but are not mineralized nor well studied.

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Several small intrusive bodies east of the resource area are believed to be late-Cretaceous to Tertiary in age. Small exposures of hornblende diorite, monzonite, and granodiorite are surrounded by hornfelsed volcanic rocks. The hornblende diorite is a fine-grained porphyritic intrusion. The amphiboles are relatively unaltered and surrounded by a thin rim of ragged biotite. The amphiboles are intergrown with plagioclase and pyroxene phenocrysts in a fine-grained groundmass of plagioclase microlites and K-feldspar, with accessory magnetite. The magnetic signature of the hornblende diorite suggests that it could be over 800 meters across in the subsurface. Hornblende diorite with strong yellow-green sericite alteration of the hornblende has been observed adjacent to feldspar porphyry in deep drill samples on the east side of the gold occurrence.

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Spring Valley host rocks

 

 

Figure 7-3 Conceptual Cross Section of Lithologies (Modified from Chadwick, 2012)

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Figure 7-3 (Continued), Legend (Modified from Chadwick, 2012)

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7.4Mineralization Style

Quartz veining, alteration, and gold mineralization at Spring Valley are irregularly distributed throughout the favorable host rock area. Large intervals of dense quartz veining and pervasive alteration are interspersed with unmineralized and less strongly altered country rock.

Gold has been observed in quartz veins and in adjacent alteration selvages as disseminated free gold. Free gold is likely deposited on fracture surfaces as well. Relatively coarse gold (30 to 90 microns) is common and can be observed as free gold liberated by drilling (Figures 7-4 to 7-6). Most quartz veinlets are in the ½ inch to 4 inch size range with associated alteration selvages of a few feet to tens of feet wide, varying to areas of dense quartz veining with pervasive alteration.

The quartz veins are translucent, intergrown, coarse quartz crystals with few if any open spaces or fissures. In combination with the relatively much larger alteration selvages, the character of these veins suggests a mesothermal or plutonic origin. Epithermal-style veins have not been observed at Spring Valley.

Quartz veins commonly contain pyrite (2-10%), less commonly galena and traces of sphalerite, magnetite and visible gold. From a limited amount of trace element data collected from drill samples, there are low levels (a few tens of parts per million above background) of anomalous lead, zinc, and arsenic associated with the gold mineralization.

7.5Alteration

There are several distinct types of alteration at Spring Valley, as listed below:

1)Pervasive to fracture controlled quartz-sericite and quartz-sericite-pyrite alteration;
2)Strong pervasive to fracture controlled argillic alteration;

3) Very strong clay and clay filled breccia formation;

4)Pervasive to fracture controlled iron-carbonate alteration;
5)Pervasive to fracture-controlled hematite-quartz alteration.

Gold zones are most pronounced in the quartz-sericite-pyrite zones and in the pervasive argillic zones, although gold is found in every alteration type.

Other types of alteration include quartz-tourmaline, and potassic. Tourmaline occurs as disseminated crystals in sediments and the diatreme breccia and as quartz-tourmaline veins. While gold is found in some quartz-tourmaline veins, tourmaline generally is not correlated with the gold. Locally, the introduction or remobilization of potassium is seen by fresh overgrowths on feldspar or fine secondary biotite. This potassic alteration style may be much more extensive than currently understood due to the high potassium content of the Rochester Rhyolite which may mask the introduction of new potassium as an alteration product.

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Carbonate alteration of the Limerick Formation greenstone rocks was observed locally adjacent to the Limerick fault. No direct correlation of carbonate alteration with gold mineralization was noted.

Figure 7-4 Coarse Gold from SV08-435 Drilled in the Big Leap Zone

 

 

Figure 7-5 Coarse Gold from SV08-410 at 310’

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Figure 7-6 Coarse Gold from SV08-436 Drilled at the South End of the Big Leap

7.6Geometry of Mineralization

The gold mineralization forms an irregularly-shaped cap encompassing at least the upper portions of the feldspar porphyry and significant volumes of the overlying or adjacent lithologies. The feldspar porphyry contact is very irregular. It was emplaced into a series of faults and irregular contacts, and may have been displaced by later fault movements. Overall the mineralization trends N20E to N30E and has the appearance of plunging 5-10 degrees to the north, though some of this plunge may be due to later fault-block subsidence.

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Mineralization has been intercepted in drilling over a strike length of 7,500 feet and is open in both strike directions. Mineralization averages about 2,300 feet wide. The shallowest mineralization is found at the top of bedrock beneath 50 feet of alluvium. Deep core drilling has intersected gold mineralization as deep as 1,500 feet below the surface.

Quartz vein strike and dip directions recorded from oriented drill core show several distinct orientations. The most prominent orientation strikes N74E, dipping 60 degrees south. This principle vein orientation is oblique to the overall trend of the gold mineralization at Spring Valley.

8.DEPOSIT TYPES

The Spring Valley deposit is hosted within a porphyry intrusion and overlying felsic volcanic rocks. Gold mineralization was controlled by steeply dipping, N20E to N30E- trending, deep-seated faults, as well as at contacts, deformation structures, and in permissive host rocks within a local graben. The mineralization is associated with relatively thin, crystalline quartz veins that have large alteration selvages. In areas of dense quartz veining, the alteration selvages coalesce into regions of pervasively altered and veined rock.

There are characteristics of the deposit which are similar to porphyry-hosted systems, but there are significant differences. There are also characteristics similar to orogenic type gold deposits, possibly related to accretion of the Koipato group. (Neal & LeLachleur, 2010). It is possible that there are multiple fluid phases influencing gold deposition in the system. Additional work is needed to better define the source of mineralizing fluids and to refine the deposit model.

Gold has been detected in gravels immediately above the bedrock-alluvium contact, indicating that placer gold deposits exist at and above the paleo-bedrock surface. Gustavson has not included an evaluation of the alluvium hosted deposits in this report.

9.EXPLORATION

Exploration work carried out by MGC and Barrick on the Spring Valley property has been and continues to be dominated by drilling. MGC and Barrick have conducted extensive geological mapping and surface geochemical sampling campaigns in the surrounding hills and have conducted limited geophysical surveys in the basin to guide drilling. Early exploration work by previous operators included small-scale surface geochemical, geophysical surveys and drilling.

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9.1Pre-MGC Exploration

The Spring Valley property was explored by previous operators from 1996 to 2002. A summary of exploration drilling by Kennecott and Echo Bay at Spring Valley is provided in the drilling summary, Item 11. In addition to drilling, Echo Bay used geophysics, surface mapping, and rock chip sampling to explore the property and define drill targets.

9.2MGC Exploration

MGC has been active in all phases of exploration work on the Spring Valley property since acquiring the project in 2003, and prior to consummating the exploration agreement with option to joint venture with Barrick Gold Exploration Inc. in early 2009. Surface geochemistry, geologic mapping, and geophysical surveys have all helped to identify drill targets both proximal to the Spring Valley discovery and in new exploration targets spread over the property.

9.2.1Surface Geochemistry

Rock and soil sampling were carried out largely on the margins of the Spring Valley discovery area. An extensive program of over 5,000 soil samples was completed over the property in 2006 and 2007. Soils were sieved to the -10+80 mesh size fraction and assayed at ALS Chemex for gold by standard fire assay methods on a 30g subsample and an additional 50 elements by aqua regia digestion of a 0.5 gram subsample and ICP finish.

9.2.2Rock Samples

Rock chip samples were taken during reconnaissance geological traverses, prospect mapping and target delineation. Between 2003 and 2009, MGC collected a total of 1540 rock samples. Rock chip samples were crushed to 70% passing 2mm with a nominal 250 gram split pulverized to 85% passing 75μm, and assayed by the same procedures as the soil samples.

9.2.3Geological Mapping

Geological mapping was completed by MGC geologists and consultants covering six square miles surrounding the Spring Valley prospect area. Detailed mapping of selected exploration target areas has also been carried out. Mapping helped clarify the property geological setting, identified structural trends helpful in targeting drilling, and identified prospective areas for follow-up exploration work.

9.2.4Geophysical Surveys

Geophysical surveys have included a CSAMT survey in 2003, and ground based gravity and magnetic surveys. J.L. Wright Geophysics of Spring Creek, Nevada, interpreted the results.

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Several anomalous features were interpreted to represent silicified bodies at depth (Wright, 2004).

The results of the geophysics, geologic mapping and geochemical surveys have helped to identify additional exploration targets on the property peripheral to the Spring Valley resource..

9.3Barrick Exploration

Barrick has conducted additional exploration programs at Spring Valley from 2009 to 2013. This has included additional geologic mapping, collecting additional rock chip and soil samples as well as drilling.

9.4Exploration Targets

Exploration at Spring Valley has been directed at identifying areas for resource expansion and new resource discovery. Numerous exploration targets outside of the resource area have been identified based on the results of soil and rock sampling, analysis of geophysical data, and improved geological mapping. Many of these targets remain untested by drilling and an expansion of the current permit boundary is needed to test them.

Examples of exploration targets include:

·Mineralized zones in the resource that can be projected to the north and northeast
·Cross structures cutting the resource area, such as the Wabash fault, that can be projected to the East along creeks mined for placer gold
·Soil and rock chip gold anomalies on Gold Mountain, south of the resource
·Soil and rock chip gold anomalies along the Fitting fault
·Buried intrusive rocks east of the resource

 

10.DRILLING
10.1Type and Extent

This section provides a synopsis of all drilling conducted on the Spring Valley resource area. The Spring Valley resource area has been drilled with a total of 672 holes totaling 603,731 feet, including 531 Reverse Circulation (RC) drill holes totaling 428,500 feet and 141 diamond core holes totaling 173,011 feet (see Table 10-1).

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Table 10-1 Summary of Drilling Campaigns in the Spring Valley Resource Area

Years Company Total Drill Holes Total Drill Footage Core Holes Core Footage** RC Holes RC Footage
1996 Kennecott 4 2,220 --- --- 4 2,220
2001/2002 Echo Bay 21 12,593 2 1,653 19 10,940
2003/2004 Midway* 30 23,679 2 1,769 28 21,910
2004 Midway 18 4,695 --- --- 18 4,695
2005 Midway 100 51,249 21 10,088 79 41,160
2006 Midway 70 60,206 7 10,376 63 49,830
2007 Midway 142 102,356 9 12,521 133 89,835
2008 Midway 63 61,945 5 8,034 58 52,460
2008 Barrick 2 2,725 2 2,725 --- ---
2009 Barrick 32 39,842 8 9,722 24 27,395
2010 Barrick 38 54,901 23 35,501 15 19,400
2011 Barrick 44 60,501 12 16,925 32 43,575
2012 Barrick 58 57,140 23 26,255 35 34,285
2013 Barrick 50 68,148 27 37,442 23 33,015
TOTALS 672 603,731 140 173,011 531 428,500

Note: Core footage includes RC pre-collar footage

* Managed by Global Geologic Services on Midway’s behalf

** Diamond core drill hole totals are inclusive of pre-collar drilling length

 

Figure 10-1 shows the distribution of drilling in the Spring Valley resource area. Mineralization defined in the Spring Valley resource area remains open along the N20E-S20W trend to the north, south and at depth.

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Figure 10-1 Spring Valley Project Area Drill Hole Location Map

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10.2Drilling Procedures and Conditions

The following information about Midway drilling is extracted from LeLacheur et al. (2009).

Drilling conditions at Spring Valley are optimal. Sites were constructed by digging a sump and, if necessary, by leveling a pad for the drill. Only rarely was more significant construction required for drill sites. Almost all holes were collared in valley fill alluvium with the water table generally between 20 to 30 feet below the surface. Water was present in nearly all holes and increased in amount with depth. Bedrock was between 50 feet and 500 feet below the surface, but was generally between 200 and 300 feet deep. The zones of highly fractured rock increased with clay and brecciated zones encountered near structures. Drilling at Spring Valley was conducted predominantly (~80%) using RC methods.

10.2.1Reverse Circulation Drilling

RC drilling conducted by Midway was carried out using tricone bits, first to get through clay layers in the alluvium, then to enhance drill penetration below the water table. RC holes were drilled with 5 3/8 inch to 5 5/8 inch bits. The holes were generally cased only in the top 20 feet.

The majority of Barrick RC holes in areas with alluvial cover were drilled by mud rotary to the alluvium-bedrock interface. Thereafter, RC drilling was carried out using tricone bits. The only exceptions to this approach were for holes sited on bedrock exposures, where a down-hole hammer would be employed until significant water was encountered. RC holes were drilled with 53/8 inch to 55/8 inch bits.

10.2.1Diamond Core Drilling

Midway diamond core holes were pre-collared with an RC drill to the alluvium-bedrock contact. The hole was then cased to the bedrock. Core holes have largely been drilled with HQ (2½ inch) size core, though three holes were drilled with PQ (33/8 inch) size core in 2006. All 2008 core was oriented to enable the collection of structural data. Core recovery has in general been good, but core loss increased when the rock was highly fractured and brecciated. In 2008, modifications to the use of drilling muds resulted in significant improvements in recovery, especially in the highly fractured and brecciated zones.

Barrick diamond drill holes were drilled by mud rotary to the alluvium-bedrock interface, and were cased to the bedrock. Thereafter, RC drilling using a tricone bit was continued if the expected mineralized zone was at greater depth. Otherwise, the diamond drill core tail was initiated at the bedrock interface. Core holes have largely been drilled with HQ (2½ inch) size core, with reduction to NQ (17/8 inch) core as necessary.

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10.2.2Drill Collar and Downhole Surveys

Collar locations from the 2006-2008 drill campaigns were surveyed by TNT Exploration (TNT) of Reno, Nevada using a survey quality GPS. Collar locations from the 2004-2005 drill campaign originally surveyed by hand-held GPS were also surveyed by TNT in 2006. Most pre-2004 collar locations (84%) were located by a surveyor while the remainder were surveyed by hand-held GPS (16%). Collar locations for all of the Barrick (2009-2013) drilling campaigns were surveyed by a professional land surveyor, using a survey quality GPS.

Significant down-hole deviation has been observed in drilling at Spring Valley. Of holes drilled prior to 2004, only Echo Bay drill holes ESV-14 to ESV-19 and core holes SVC-1 and SVC-2 were surveyed down-hole. Other Echo Bay holes were not surveyed. Between 2004 and 2006, holes deeper than 500 feet were generally surveyed down the hole. In 2008, all but two completed holes were surveyed down-hole. International Directional Services (IDS) of Elko, Nevada and Major Directional Services of Salt Lake City, Utah were contracted to do the down-hole surveys. All Barrick RC and diamond drill holes were down-hole surveyed by IDS using a gyroscopic survey instrument.

10.3Drilling Interpretations and Results

Drilling at the Spring Valley project has occurred over an area approximately 10,500 feet in a N20E-S20W direction and up to 3,000 feet wide. The drilling has defined a gold resource 7,500 feet in strike length by 2,300 feet wide. Additional exploration and step-out targets remain untested.

The Spring Valley gold resource has a strong NNE linear trend. That trend can be projected to the NE into an area of NNE trending faults with soil gold anomalies. This structural setting is similar to the main resource area and represents a significant target for expansion of the resource. Drill testing to the north has been limited by the boundary of the drill permit.

Barrick drilling to the south of the resource identified several smaller pods of gold mineralization. The largest of these is at the furthest south extent of drilling near the flanks of Gold Mountain. Drill testing to the south has also been limited by the boundary of the drill permit. This southern mineralization remains open with no drilling further south.

The Wabash fault is a NW-SE trending fault that bisects the main Spring Valley resource. Extensions of this fault to both the east and west of the main resource have the potential to host mineralization that has not yet been tested. Placer gold is common along the trace of the fault to the SE. This target has not been tested to date.

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A lower Felsic Porphyry unit is mineralized at depth in the main resource area. Additional infill drilling is needed throughout the deposit to better define this deeper part of the resource. On the east side of the deposit, the host rock can be followed from depth back to the surface. There is potential for the lower Felsic Porphyry to be found close to the surface in areas not yet drilled.

 

11.SAMPLE PREPARATION, ANALYSES, AND SECURITY
11.1Sampling Method and Approach

The Spring Valley gold system contains appreciable free gold, at all gold grades of mineralization. This has been discussed and analyzed in previous technical reports (Ristorcelli, 2003; Griffith and Ristorcelli, 2004; Wakefield and Seibel, 2006; Wakefield and Kuhl, 2008; LeLacheur et al., 2009; and Crowl, Hulse, Baker, Lane and Malhotra, 2011.

Midway and Barrick have established the practice of first assaying all samples with a 30 gram fire assay and then all mineralized intervals were systematically re-assayed using Metallic Screen Fire Assay (MSFA). Where available, the MSFA numbers were utilized in the resource estimate. Appropriate QA/QC procedures were followed. The project data is stored in a secure database. Assay and geology data have been checked for accuracy for all programs prior to 2009, and spot checked in the Barrick programs from 2009 through the 3rd quarter of 2013.

Sampling consultants F. Pitard in 2004 and Dr. Dominque François-Bongarçon in 2007, recommended analyzing very large samples to address the nugget effect in sampling. Midway investigated the possibility of analyzing very large samples with ALS Chemex, a commercial laboratory. The recommended sample size was too large for their sample preparation equipment so each sample would have had to be sub-divided up to 5 times, with each subsample assayed separately. Potential for significant errors was considered to be high. As a result, these recommendations were not implemented.

11.2Midway Sampling Preparation, Analyses, and Security

The following information about Midway sampling is extracted from Wakefiled and Kuhl (2008) and LeLacheur et al. (2009).

11.2.1Sample Chain of Custody

At the end of every drill shift, reverse circulation drill samples were taken from the project site by Midway geologists and transported to a facility in Lovelock, Nevada where the samples were stored behind locked gates. Core drill samples were stored at the same facility in separate bins. Periodically the samples were picked-up by ALS Chemex Labs and were transported to their Winnemucca facility for assay preparation. ALS Chemex is an ISO 9001:2000 and ISO 17025:2000 registered assay laboratory. For check assays, coarse duplicates were also delivered to the Inspectorate American lab in Reno, Nevada for preparation and assay. Inspectorate is an ISO 9001:2000 registered assay laboratory. No Midway personnel were utilized in sample preparation or assaying.

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11.2.2Diamond Drilling Core Sampling

Core was recovered using a split tube assembly. Core was oriented and marked during the drilling using a Reflex® ACT electronic orientation tool. Recovered core is placed in cardboard core boxes at the drill site with the core run footage marked on wood blocks and the drill hole name and drill interval marked on the outside of the box. At least once per day, a geologist retrieved the full core boxes and transported them to the Lovelock facility. The core was photographed, logged, and sampled. The orientation of veins, fractures, and faults, as well as lithology, alteration, and geotechnical information was recorded during logging.

Core was sampled in intervals up to five feet while honoring geologic contacts where appropriate. The preferred sample interval was five feet and this was also the specified maximum sample length. Geologic contacts or features were used as sample boundaries wherever possible. The core was split with a saw if the rock was competent or the core was broken with a splitter if it was fractured or friable. The sample was bagged in large micro-pore bags marked with the sample number and stored at the logging facility until transport to the assay lab. Typically, ½ of the core sample was submitted for assay analysis and the remaining ½ stored for reference and other testing.

11.2.3Sampling of Reverse Circulation Cuttings

Reverse Circulation (RC) drilling at Spring Valley was performed wet as the water table is typically 20 to 30 feet below the surface. Water flow tests were conducted at least once a drill shift or more often when water flow was high or changed drastically. Water flow varied but was typically 40 gallons per minute and has been measured as high as 150 gallons per minute, with the higher flows generally found at the bottom of the hole. RC drilling was generally performed with a tricone bit to improve penetration rate and quality of returns in the presence of ground water.

Cutting samples were collected every 5 feet by a designated and trained sampler. Cuttings from each 5-foot sample interval were passed through a cyclone and into a rotary splitter with 16 openings. The number of splitter openings was adjusted to maintain a roughly constant sample size of 15 kg. The number of openings was recorded in the drill log. This number, together with the dry weight for the interval at the assay laboratory, allowed an estimation of RC drilling recovery. Drill samples were collected at five-foot intervals and the RC drill rods were 20 feet long. A representative split from the discharge material was placed into a plastic RC chip tray for geological logging. The chip tray was marked with the drill hole name and down-hole interval.

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RC samples were collected in a five gallon bucket lined with large micro-pore bags marked with the sample number. The five gallon bucket was placed inside a wide, low profile tub designed to catch any fine grained cuttings in the overflow water. At the conclusion of a sample interval, the water in the bucket and tub was decanted, the overflow material in the tub was washed into the sample bag in the bucket and the bag was sealed. A nominal sample weight of 15 kg was taken to aid in getting an accurate assay in a coarse gold environment. In 2008, RC samples averaged 13.29 kg.

RC samples were laid out on the ground at the drill site, allowed to drain, and brought back to the Lovelock facility at the end of each drill shift by Midway Resources personnel. In Lovelock, samples were stored in secure bins until picked up and transported to Winnemucca by the commercial laboratory for preparation and assaying.

11.2.4Sample Preparation and Assay Procedures

2003

Gold assays for the 2003 drilling campaign were performed by BSI Inspectorate of Reno, Nevada using a standard FA with a two assay ton sub-sample size and with the final concentration determined by AAS. Assays returning greater than 2.0 g/t (0.088 oz/t) gold were re-assayed by fire assay with a gravimetric finish. Metallic screen gold fire assays were performed on most mineralized intervals by ALS Chemex of Reno, Nevada.

ALS Chemex performed metallic screen fire assays using a 100 micron screen (150 mesh) on one kilogram sub-samples of re-split coarse reject. The assay of the coarse (+150 mesh) material was weight averaged with two assays of the fine (-150 mesh) material.

2004-2005

Several labs assayed drill hole samples from the 2004-2005 drilling campaign. American Assay Laboratories (AAL) were used to assay holes SV04-52 to SV04-66, Inspectorate were used to assay holes SV05-67c to SV05-79, and ALS Chemex to assay holes SV05-80 to SV05-166. Coarse rejects of select samples were resubmitted to AAL and Inspectorate for metallic screen assay. All three of these laboratories are located in Reno, Nevada. AAL is an ISO 17025 registered laboratory.

Sample preparation at AAL and Inspectorate consisted of crushing the entire sample to pass a 10 mesh screen, riffle splitting to generate a 250 gram sub-sample, and pulverizing this subsample to pass a 150 mesh screen. ALS crushed the entire sample to 70% passing a 2 mm (10 mesh) screen, riffle split to generate a one kilogram sub sample, and pulverized this subsample to 85% passing a 75 μm (200 mesh) screen.

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Mineralized intervals were selected based upon visual examination of the cuttings or core by the logging geologist and assayed by metallic screen fire assay using a 150 mesh screen on one kilogram sub-samples. All three labs used the same procedure where the assay of the coarse (+150 mesh) material is weight averaged with two assays of the fine (-150 mesh) material. The remaining intervals were assayed for gold by standard fire assay on 30 gram subsamples with the final concentration read by AAS. Samples reporting greater than 10 g/t (0.292 oz/t) were re-assayed by fire assay and gravimetric finish.

2006-2007

In 2006 and 2007, ALS Chemex was the primary assay laboratory. ALS Chemex is an ISO 9001:2000 and ISO 17025:2000 registered assay laboratory. Midway prepared a sample assay protocol for use with the 2007 drill program that describes the sample preparation, assay, and QA/QC procedures to be used for RC and core drill samples

Sample preparation and assay procedures remained the same as those used at the end of 2005, except that all samples were submitted for 30 gram fire assay, and those assaying greater than 0.2 g/t (0.006 oz/t) were re-assayed by one kg metallic screen fire assay. Intervals with a high concentration of quartz veining or groupings of assays by fire assay greater than 0.1 g/t (0.003 oz/t) were also frequently re-assayed by one kg metallic screen fire assay.

ALS crushed the entire sample to 70% passing a 2 mm (10 mesh) screen, riffle split this material to generate a nominal 250 gram sub-sample, and pulverized this sub sample to 85% passing a 75 μm (200 mesh) screen. All samples were assayed for gold by standard fire assay on 30 gram sub-samples with the final concentration read by AAS. Samples reporting greater than 10 g/t (0.292 oz/t) were re-assayed by fire assay and gravimetric finish. Samples reporting greater than 0.2 g/t (0.006 oz/t) gold by standard fire assay were re-assayed by metallic screen fire assay. Metallic screen fire assays were performed on one kilogram subsamples using a 150 mesh screen. The assay of the coarse (+150 mesh) material is weight averaged with two assays of the fine (-150 mesh) material to produce a final gold assay.

2008

ALS Chemex was the primary assay laboratory. Sample preparation at ALS Chemex consisted of normal sample drying, then crushing the entire sample to pass a 10 mesh screen, riffle splitting to generate a 250 gram sub-sample, and pulverizing this sub sample to pass a 150 mesh screen. Pulps were then forwarded by ALS to their lab in Reno, NV where the assaying was performed.

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All samples were submitted for standard fire assay on 30 gram sub-samples with the final concentration read by AAS. Samples reporting greater than 10 g/t (0.292 oz/t) were re-assayed by fire assay and gravimetric finish. Mineralized zones assaying greater than 0.2 g/t (0.006 oz/t), and other intervals with high quartz vein concentration or other indicators of mineralization, were assayed by one kg metallic screen fire assay.

ALS Chemex performed metallic screen fire assays using a 100 micron screen (150 mesh) on one kilogram sub-samples of re-split coarse reject. The assay of the coarse (+150 mesh) material was weight averaged with two assays of the fine (-150 mesh) material. Assays were reported as a weighted average of the whole, and the weights and assays of the individual splits.

Assay work in 2008 included 12,366 samples by 30 gram fire assay and 4,143 samples by metallic screened fire assay.

11.2.5Standards, Duplicates, and Blanks

2003

Midway employed a QA/QC program of Standard Reference Materials (SRMs) and field duplicates inserted in the project sample stream at a rate of approximately one control sample for every 20 project samples (no SRMs were submitted for holes SV-39 to SV-50).

The Inspectorate gold assays are acceptably accurate for purposes of mineral resource estimation.

2004-2005

Midway employed a QA/QC program that consisted of inserting Standard Reference Material (SRM) and coarse duplicates into the sample stream at the rate of 1 in 25 project samples. This program was consistent for the three laboratories employed. The same SRM was used as in the 2003 drilling campaign.

SRM results for the 2004-2005 drilling campaign were biased high. AAL assays are biased high by an average of 9%, Inspectorate assays were biased high by an average of 12%, and ALS assays were biased high by an average of 13%. The fact that all three laboratories obtained results biased high by similar amounts suggested that the SRM value was incorrect. Therefore it was found that the AAL, Inspectorate, and ALS gold assays are acceptably accurate for purposes of mineral resource estimation.

2006-2007

Midway employed a QA/QC program that consisted of inserting blanks, SRMs, and coarse duplicates into the sample stream at the rate of one in 25 project samples. Commercial SRMs from Minerals Exploration and Environment Geochemistry (MEG) of Reno, Nevada and Ore Research & Exploration (Ore Research) of Bayswater, North Australia were used to monitor gold assay accuracy. MEG assayed five splits of each SRM for gold at five separate assay laboratories and assigned the recommended value to the average of the resulting 25 assays. Ore Research assayed four splits of each SRM for gold at 16 separate assay laboratories and assigned the recommended value to the median value of the average values from each of the 16 participating laboratories. One SRM provided by MEG was found to be unreliable and was eliminated after limited use.

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Blank results (Figure 11-1) for gold by fire assay were found to be acceptable. A total of nine assays reported greater than 0.025 g/t gold (0.001oz/t, five times the lower detection limit) out of the total 428 blank samples assayed during this period. Only two of these were greater than 0.125 g/t (0.004 oz/t) gold.

Figure 11-1 2006 – 2007 Blank Results

 

An analysis of SRM results (Figures 11-2 through 11-6) by AMEC (2008) shows that the accuracy of ALS Chemex gold assays is acceptable. A total of 780 SRMs were included with project samples from the 2006-2007 drill campaign. Approximately 88% of assay results fall within ±10% of the recommended value for all SRMs assayed. No significant bias was observed in the SRM results. Assay results falling more than 10% from the recommended value were flagged and remediated directly with ALS Chemex.

 

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Figure 11-2 2006 – 2007 Standard MEG055 Results

 

 

 

 

Figure 11-3 2006 – 2007 Standard MEG160 Results

 

 

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Figure 11-4 2006 – 2007 Standard MEG200 Results

 

 

 

Figure 11-5 2007 Standard MEG067 Results

 

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Figure 11-6 2007 Standard MEG045 Results

 

Analysis of the results from the coarse duplicates found a higher than normal level of variance between assays, likely because of the amount of coarse gold in the samples. A total of 458 duplicates were assayed as part of the 2006-2007 drill campaign.

These gold assays are acceptably accurate for purposes of mineral resource estimation.

2008

Midway employed a QA/QC program that consisted of inserting blanks, SRMs and coarse duplicates into the sample stream at the rate of one in 25 project samples. Coarse duplicates were also delivered to the Inspectorate American lab in Reno, NV for preparation and assay.

Of the total of 247 blanks analyzed in 2008, there were 6 failures for a failure rate of 2.4%. Only 2 samples were above the 0.025 level and only a single value exceeded the 0.125 level. In the case of failures above a 0.025 level, the sampling protocol requires a rerun of the blanks and the surrounding assays. The results of the reruns found no significant error. There is no significant carry-over contamination affecting the 2008 assays.

Commercial SRMs from Ore Research (Figures 11-7 and 11-8) were used to monitor gold assay accuracy. Approximately 88% of assay results fell within ±10% of the recommended value for all SRMs assayed. A total of 325 SRM’s were inserted into the assay stream and a total of 34 failures were reported, 22 of which were deemed significant enough to require re-assay of a range of samples above and below the failure. In each case the re-runs were comparable to the initial assays. Two SRM’s were utilized: a “low-grade” value SRM at 1.02 g/t gold and a “high grade” SRM at a 3.63 g/t gold value. The low-grade SRM was biased low by 9%, but the high grade SRM demonstrated no bias.

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Figure 11-7 2007 – 2008 Standard OREAS102 Results

 

 

 

 

Figure 11-8 2007 – 2008 Standard OREAS342 Results

 

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A total of 146 duplicates were assayed as part of the 2008 drill program. Analysis of the results from the coarse duplicates found a higher than normal level of variance between assays, consistent with the presence of coarse gold in the system.

11.3Barrick Sampling Preparation, Analyses, and Security
11.3.1Sample Chain of Custody

RC samples are bagged, laid out on the ground at the drill site, allowed to drain, and are secured in sealed and locked bins at the drill site, until picked up and transported to Winnemucca by the commercial laboratory for sample preparation and assaying.

Core drill samples are transported from site and stored at the Lovelock facility in separate bins. Periodically the samples were picked-up by ALS Chemex Labs and were transported to their Winnemucca facility for assay preparation.

11.3.2Diamond Drilling Core Sampling

In the Barrick drilling programs, HQ drill core is recovered using a split tube assembly. Core is oriented and marked during the drilling using a Reflex ACT electronic orientation tool. Recovered core is placed in cardboard core boxes at the drill site with the core run footage marked on wood blocks and the drill hole name and drill interval marked on the outside of the box. At least once per day, the full core boxes are retrieved and transported to the Lovelock facility. The core is photographed, logged and marked for sample intervals. The orientation of veins, fractures and faults is recorded in drill logs as well as lithology, alteration and geotechnical information.

Core is sampled in intervals of at least two feet, and up to eight feet while honoring geologic contacts where appropriate. The preferred sample interval was five feet. Geological contacts or features are used as sample boundaries wherever possible. Whole core is submitted as assay samples for each sample interval. The sample is bagged in large micro-pore bags marked with the sample number and securely stored at the logging facility until transported to the assay lab. Select two-foot sections of drill core are collected as representative of specific alteration, mineralization and/or lithologic types, and are separately submitted for multi-element analysis by ICP methods. Four to six inch pieces of core are marked and separately bagged for specific gravity measurement at Chemex. Skeleton core is created by selecting a representative two to four inch piece of core within every five-foot interval. The skeleton core is stored on-site at the Lovelock facility.

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11.3.3Sampling of Reverse Circulation Cuttings

RC drilling at Spring Valley was performed wet as the water table is typically 20 to 30 feet below the surface. Water flow tests are conducted at least once a drill shift or more often when water flow was high or changed drastically. Water flow varies but is typically 40 gallons per minute and has been measured as high as 150 gallons per minute, with the higher flows generally found at the bottom of the hole.

Cutting samples are collected every 5 feet by a designated and trained sampler. Cuttings from each 5-foot sample interval are passed through a cyclone and into a rotary splitter with 16 openings. The number of splitter openings is adjusted to maintain a roughly constant sample size of 30 to 40 pounds. The number of openings is recorded in the drill log. This number, together with the dry weight for the interval at the assay laboratory, allows an estimation of RC drilling recovery. Drill samples are collected at five-foot intervals and the RC drill rods are 20 feet long. A representative split from the discharge material is placed into a plastic RC chip tray for geological logging. The chip tray is marked with the drill hole name and down-hole interval.

RC samples are collected in a five gallon bucket lined with large micro-pore bags marked with the sample number. The five gallon buckets are placed inside a wide, low-profile tub designed to catch any fine grained cuttings in the overflow water. At the conclusion of a sample interval, the water in the bucket and tub is decanted, and the overflow material in the tub is washed into the sample bag in the bucket and the bag is sealed. A nominal sample weight of 30 to 40 pounds is taken to aid in getting an accurate assay in a coarse gold environment.

RC samples are laid out on the ground at the drill site, allowed to drain, and are secured in sealed bins at the drill site, until picked up and transported to Winnemucca by the commercial laboratory for sample preparation and assaying.

11.3.4Sample Preparation and Assay Procedures

ALS Chemex (ISO 9001:2000 and ISO 17025:2000 registered assay laboratory) was the primary assay laboratory. Sample preparation for both core and RC samples at ALS Chemex followed the flow sheet used by Midway beginning in 2007, until August 2009. The earlier process consisted of normal sample drying, then crushing the entire sample to pass a 10 mesh screen (>95% passing 10 mesh), rotary splitting to generate a 250 gram sub-sample, and pulverizing this sub-sample to pass a 200 mesh screen (>85% passing 200 mesh). Pulps were then forwarded by ALS to their lab in Reno, NV where the assaying was performed.

All samples were submitted for standard fire assay on 30 gram sub-samples with the final concentration read by AAS. Samples reporting greater than 10 g/t (0.292 oz/t) were re-assayed by fire assay and gravimetric finish. Mineralized zones assaying greater than 0.2 g/t (0.006 oz/t), and intervals with high quartz vein concentration or other indicators of mineralization, were also assayed by one kilogram metallic screen fire assay.

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ALS Chemex performed the metallic screen fire assays by generating a one kilogram pulp from a rotary split from the coarse reject, which was pulverized to 75 microns (>80% passing <75 microns). Material not passing a 150 mesh screen (+150 mesh) was weighed and assayed. Two 30 gram splits of fines (-150 mesh) were fire assayed for gold. Results were combined to calculate an assay for the sample. ALS Chemex reported a weighted average grade assay for the sample, as well as the weights and assays of the individual splits.

The sample preparation flow sheet was adjusted beginning August 2009 to generate a larger pulp. The crushed samples were split by rotary splitter to produce a 1,200 gram split which was then pulverized as in the previous scheme. The pulp was split into a 100 gram sample for analysis by fire assay with an AA finish. The remaining 1,100 gram master pulp was stored along with the coarse reject for future use. Upon review of the initial assay results, project geologists would submit a list of samples for metallic screen fire assay analysis to ALS Chemex. The master pulp was pulled from storage and split to generate a sample for the metallic screen fire assay procedure, identical to that outlined above.

11.3.5Standards, Duplicates and Blanks

Barrick employs a QA/QC program that consists of inserting blanks, SRMs and coarse duplicates into the sample stream at the rate of approximately one in 25 project samples. Blanks were inserted as 1% of samples; SRMs – 2%; and duplicates – 1% of the total samples. ALS Chemex routinely runs lab duplicates on 3.5% of the samples in each batch. The QA/QC program is run internal to Barrick in its Elko office. Barrick reports a rigorous analysis of its evaluation of the results to Spring Valley project geologists on a monthly basis, indicating standard and duplicate failures and other issues. The analysis includes plots of SRM and blank results by batch number. The SRM results are compared to the certified value of the SRM, and to threshold values at two and three standard deviations. Results between two and three standard deviations from the accepted value are classified as warnings, and are resubmitted at the request of the onsite geologist. Samples exceeding three standard deviations are considered to have failed, and are immediately resubmitted.

Gustavson reviewed the monthly reports of Barrick and the 2011 QA/QC plots (Figures 11-9 through 11-16) and considers the QA/QC program of industry standards for treatment of the SRM and blank data to be adequate. An analysis of duplicate data was not available, and Gustavson did not compile this information.

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Figure 11-9 Barrick 2011 Blank Results

 

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Figure 11-10 Barrick 2011 Standard OxC72 Results

Figure 11-11 Barrick 2011 Standard OxG83 Results

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Figure 11-12 Barrick 2011 Standard OxJ68 Results

Figure 11-13 Barrick 2011 Standard SE29 Results

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Figure 11-14 Barrick 2011 Standard SE44 Results

Figure 11-15 Barrick 2011 Standard SG40 Results

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Figure 11-16 Barrick 2011 Standard Si42 Results

11.3.6Check Assay Programs

During the 2009 – 2013 programs there were no check assay inter-laboratory programs reported by Barrick to Midway.

11.3.7Twin Hole Comparisons

In 2009, Barrick twinned diamond drill core with reverse circulation holes at six drill sites at Spring Valley, and in 2010 completed two diamond drill holes as twins of reverse circulation holes completed in previous programs.

With the exception of the two core holes with single sample interval high grade intercepts, the average gold grade of the RC drilling is slightly higher than that of the comparable core samples. This relationship was also recognized by Midway (LeLacheur et al., 2009) in a twin hole program of two pairs of core-RC holes, and in a study using a nearest neighbor RC assay result in comparison with a core assay interval; however the difference is negligible considering the documented coarse gold sampling issues, and the relatively small data set. All drill hole data has been included in the database, and in the generation of gold resources reported in this document. Gustavson believes this treatment is acceptable and within limits of the available data; especially in light of the coarse gold sampling comments of Pitard (2004), suggesting the nugget effect on the project which results in an understatement of the gold grade, thereby creating a very conservative resource estimate.

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11.3.8Exploration drilling 2014

Barrick, as operator of the Spring Valley Venture, began the 2014 exploration drill program in mid-March 2014. The data from the 2014 drill program have not yet been made available to Midway, and are not included in this resource estimation. Gustavson does not anticipate that a small number of additional infill drillholes will have a material impact on the resource.

11.4Data Entry Validation Controls

Geologic and geotechnical logs (for core only) were completed for each Midway drill hole. For RC drilling, the geologists logged from drill chips directly into Microsoft Excel® spreadsheets using a PDA-type hand-held computer at the RC drill rig. Drill core was cleaned, photographed, and then logged by Midway geologists who input the information directly into Microsoft Excel® spreadsheets. Structure and vein orientations were recorded from oriented core. Drill logs were printed and stored in binders by hole name together with related drill information. All collar and drill log information was imported into a Microsoft Access® drill hole database. The logging forms were entered into a secure Microsoft Access® database, and any changes to the database needed to be approved by the project manager. This database was stored on the main computer at the Lovelock Office, and backed up to the server in the corporate office. Access to the primary database was restricted to the Project Manager and Database Manager for security.

Barrick project personnel follow sample handling and logging protocols outlined in a written procedures document. For diamond drill core, a visual quick-log of lithology is prepared while loading core at the drill site or unloading core at the Lovelock facility. Once at the Lovelock facility, the core is washed and photographed, with photos downloaded to a database. Photos are inspected for clarity and lighting, and reshot if necessary. Geological and geotechnical logs are completed, with data captured electronically, for each drill hole, using a preapproved logging form. Geotechnical aspects logged include core recovery, RQD, fractures per foot, and estimated hardness. Geologic features logged include lithology, alteration, mineralization, structure and measurement of magnetic susceptibility (every three feet). Sample intervals are marked by the geologist based on logged geology, alteration, mineralization and/or structure.

For RC drilling, the geologists logged from drill chips electronically using a PDA-type hand-held computer at the RC drill rig.

Drill logs were printed and stored in binders by hole name together with related drill information. All collar and drill log information was imported into Barrick’s drill hole database. Access to the primary database was restricted to the Project Manager and Database Manager for security.

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11.5Opinion on Adequacy

Gustavson concludes that the sample preparation, security and analytical procedures are correct and adequate for preparing this Technical Report. The sample methods and density are appropriate and the samples are of sufficient quality to comprise a representative, unbiased database.

12.DATA VERIFICATION

Midway relies upon the accuracy and completeness of data provided by Barrick pursuant to the Exploration, Development, and Joint Operating Agreement dated March 9, 2009, and the subsequent Spring Valley Venture Agreement.

Gustavson (W. Crowl), along with William Neal of Midway, visited the Spring Valley Project site on June 17, 2014 and the Core Splitting and sampling facility at Turquoise Ridge on June 18, 2014. (core splitting and sampling for the 2014 Spring Valley drill program is being performed at Barrick’s Turquoise Ridge facility due to availability of appropriate equipment and personnel.) Mr. Crowl observed drilling, drill sampling, and logging in progress at Spring Valley and observed core splitting and sampling procedures for the 2014 drill program at the Turquoise Ridge Facility. These observations do not have direct bearing on the sample database used for this resource estimation, but they serve as confirmation of Barrick’s exploration practices and procedures described later in this report.

Gustavson (W. Crowl and Z. Black) visited the Spring Valley project site and the Lovelock facility on October 24, 2013. As with Gustavson’s previous visit in 2011, there were no drilling activities in progress. In the company of William Neal of Midway and Bob Morrel, the Barrick District Manager, several geologic sites were visited and several hole collars were surveyed with hand-held GPS.

In the Lovelock office, Gustavson was provided a presentation of the current geologic understanding of the Spring Valley gold deposits. After the presentation, Gustavson toured the core storage and logging facilities. Barrick provided explanations of the current alteration and mineralization logging procedures and discussed the use of multi-element analyses in characterization of mineralization.

Gustavson (D. Baker) visited the Spring Valley project site and the Lovelock facility on February 24, 2011. There were no drilling activities in progress, and the project site was snow covered. Drill sites are typically reclaimed shortly after completion of drilling. These combined factors precluded on-site confirmation of the location of 2009 – 2010 drill holes.

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The visit to the Lovelock facility enabled discussions with Spring Valley project personnel regarding drilling methods, sample handling and security, core logging protocols, data management and QA/QC programs. Discussion regarding drilling methods, sample handling and security, and QA/QC programs is provided in the appropriate sections above. Gustavson regards methods and management employed in these areas as acceptable and meeting industry standards.

In the Lovelock office, Gustavson reviewed core handling protocols with project personnel. A core logging procedures document was provided and reviewed, and outlines the full breadth of the core handling process, from the drill rig through the entire logging process. The procedures incorporate the washing and photographing of core, the taking of magnetic susceptibility readings, geotechnical logging categories, geologic and structure logging categories, and the sample selection process, including sample intervals for assay, multi-element samples, skeleton core and samples for density measurement. All logging information is captured electronically, with hard copies printed and filed.

A sampling of assay certificates provided to Midway by Barrick was reviewed by Gustavson. Assay information on the certificates matched that captured in the project database. This is to be expected in that assay results are transmitted and captured electronically.

Based on the observations from the 2014, 2013 and 2011 site visits, Gustavson considers that the data provided by Barrick is sufficient for use in the estimation of mineral resources.

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12.1Validation of Database

Gustavson conducted a thorough audit of the current Spring Valley exploration drill hole database. The following tasks were completed as part of the audit:

  • Perform an mechanical audit of the database;
  • Validate the assay values contained in the 2013 database with assay certificates from Midway; and
  • Review the QA/QC protocol and summary results from Barrick.

 

12.1.1Received Data

The exploration database used by Gustavson for the resource estimation incorporated all significant drillholes through the 2013 drill campaign, with the exception of 4 holes (SV13-653C, 659CA, 662C, and 672C) where assays were not available prior to the effective date of the report. Data from the missing holes is not expected to have a material impact on the resource estimation. Drill hole data, including collar coordinates, down hole surveys, sample assay intervals, and geologic logs, were provided in a secure Microsoft Access database and as CSV files (the database). The database is managed by Barrick under the Exploration, Development, and Joint Operating Agreement.

The present database has been updated to include the remaining 2010, 2011, 2012, and 2013 drill holes, which were available as of the effective date of the report. The drill hole database contains gold assay analytical information for 112,858 sample intervals from core, RC, and mud rotary drilling methods. All mud rotary drill samples were pre-collar samples taken within the alluvium and thus are not included in the resource estimation.

The Spring Valley Venture, managed by Barrick Exploraiton, initiated the 2014 drill program in March 2014.

Additionally, Gustavson was provided with QA/QC summaries, assay certificates (2009-2012), Vulcan block models, geologic solids and surfaces, topography, and spread sheets and reports detailing Barrick’s block model estimation process.

12.1.2Mechanical Audit

A mechanical audit of 8 database tables was completed using Leapfrog Geo software (“Geo”). The database was checked for missing survey data, overlaps, gaps, total drill hole length inconsistencies, non-numeric assay values, and negative numbers. A total of 673 drill holes were imported into Leapfrog for validation. Table 12-1 shows the results of the mechanical audit and the subsequent corrections.

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Table 12-1 Mechanical Audit Errors

Drill Hole Validation Concern Corrective Action
SV11-545X No Collar Data Removed from Estimation Database
SV12-586C No Downhole Survey Data Removed from Estimation Database
SV12-595X No Downhole Survey Data Removed from Estimation Database
SV13-659C No Downhole Survey Data Removed from Estimation Database
SV13-659CA No Downhole Survey Data Removed from Estimation Database
SV04-51 No Assay Data No Action Taken
SV05-120C No Assay Data No Action Taken
SV05-121C No Assay Data No Action Taken
SC13-632C No Assay Data No Action Taken
SV13-644C No Assay Data No Action Taken
SV13-656C No Assay Data No Action Taken
SV13-664C No Assay Data No Action Taken
SV13-666C No Assay Data No Action Taken
SV13-659C No Geology Data No Action Taken
SV13-659CA No Geology Data No Action Taken
SV13-659C No Alteration Data No Action Taken
SV13-659CA No Alteration Data No Action Taken
SV13-659C No Redox Data No Action Taken
SV13-659CA No Redox Data No Action Taken
SV13-659C No RQD Data No Action Taken
SV13-659CA No RQD Data No Action Taken

(Note: 664C and 666C are geotech holes for which data is not yet available as of the effective date of the report.)

 

12.1.3Overlaps

The assay file imported into Geo contained a significant number of overlapping intervals. All of the overlaps are attributed to composited intervals and multiple samples from the core holes being submitted for analysis. There are four core sample types recorded in the database;

1.core (whole core samples)
2.core_chip (chip sampled core – primarily for metallurgical holes)
3.core_select (select hand samples of core)
4.core_split (split or saw core).

Gustavson resolved the majority of the overlaps by removing the core_chip samples and composite intervals from the data set. The core_select and core_split intervals were reviewed wherever an overlap was identified. Table 12-2 summarizes the identified overlaps and the correction made to the database by Gustavson.

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Table 12-2 Database Overlap Summary

Hole ID From To Sample Type Correct From Correct To
SV12-558C 395 400 RC 395 397
SV12-558C 397 402 Core 397 402
SV12584C 495 500 RC 495 497
SV12584C 497 502 Core 497 502
SV13-615C 495 500 RC 495 497
SV13-615C 497 502 Core 497 502
SV13-652C 405 410 RC 405 407.5
SV13-652C 407.5 412 Core 407.5 412
SV12-577C 19 96.1 core_select removed no assay data
SV12-582C 5 96.1 core_select removed no assay data

 

Gustavson disregarded the core_select samples in drill holes SV12-577C and SV12-582C without analytical information thereby resolving all the overlapping intervals. The remaining overlaps in Table 12-2 were a result of overlapping intervals at the pre-collar point of the 4 drill holes. Each of the RC sample types was adjusted to match the core interval.

12.1.4Gaps, Non-numeric Assay Values, and Negative numbers

The software reported 870 missing intervals. The majority of which are located at the collar of the drill hole or within the pre-collar drilling samples of the historic drill holes, e.g. ESV1.

All of the non-positive numbers (-99 or -9) represent non-sampled intervals and were omitted from the dataset. Assay values of zero (0.0) within the historic drill data are assumed to be below detection limit assays and are included as 0.0001 oz/t in the resource estimation. Table 12-3 below summarizes the number of intervals imported, the number of missing intervals, the number of non-positive values, the number of 0.0 assays, and the number of valid assays for each element.

 

Table 12-3 Interval Import Summary

Element Missing Interval Non-Positive Values Below Detection Limit Assay Values
Au_Best_Value_OPT_dr 870 2,132 1,579 109,147

 

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12.1.5Survey Data

Drill hole SV12-607W has a duplicate downhole survey at the collar. Gustavson chose to use the more precise survey reported as it better matched the next survey down the hole. Two sets of drill holes were identified as potential twins or as possible wedges;

·SV05-75 and SV05-85C
·SV09-457 and SV09-462C.
12.1.6Table Depth Consistency

The survey, assay, and the geology tables maximum sample depth was checked as compared to the maximum depth reported in the collar table for each drill hole. No intervals exceeded the reported drill hole depths.

12.1.7Assay Certificates

Gustavson received original assay certificates in pdf and comma delimited format for all drillhole samples through 2012. A random manual check of 1,210 samples within the database (including 2013 data) against the original certificate revealed 3 total errors (Table 12-4). The results of the analysis indicate that the data imported into the database matches the certificates 99.7% of the time with a confidence interval of ± 0.56% at a 95% confidence level.

Table 12-4 Certificate Validation Errors

Sample ID Drill Hole From To Certificate Au ppm Database Au ppm Sample Type Database Certificate
604019 SV10-500C 345 350 0.0025 -99 CONVENTIONL_MUD  
614033 SV10-509C 1803.2 1808.4 0.009 1.31 Au_Au-AA23_ALS_ppm WN11022280
613940 SV10-509C 1832.6 1834.9 0.043 0.029 Au_Au-AA23_ALS_ppm WN11022280

13.MINERAL PROCESSING AND METALLURGICAL TESTING
13.1Mineral Processing and Metallurgical Testing

Barrick contracted with McClelland labs in Sparks, Nevada to complete a detailed metallurgical testing program on thirteen drill core composites from Spring Valley. The composite samples representing four rock types and three oxidation states were tested by column leaching, bottle roll and gravity methods. The composites were from a total of 355 split diamond drill core intervals, each interval representing approximately five feet. Grades of the composite samples ranged from 0.21 grams per tonne (gpt) to 5.07 gpt (0.006 oz/t to 0.148 oz/t); nine of the samples had grades less than 1.03 gpt (0.030 oz/t). Because coarse gold is known to be present at Spring Valley, the reported gold grades were determined by metallic screen fire assays, see Table 13-1.

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Table 13-1 Composites

 

Metallic Screen Assays FP-OX A FP-OX B SD-OX WT-OX A WT-OX B FP-TRANS A FP-TRANS B BX-RED A BX-RED B FP-RED A FP-RED B FP-RED C WT-RED
Gold oz/t 0.015 0.027 0.026 0.006 0.08 0.036 0.008 0.013 0.027 0.022 0.022 0.034 0.148

13.2Column Leach Tests

Column leach tests simulating heap leach conditions were conducted over 260 days, and yielded gold recoveries from 46% to 98% at an average of 73% for all materials tested. Individual results for the oxide, transition and reduced ores averaged 77%, 80% and 68% respectively. Rocks tested by column leach methods were crushed to 80% passing one-half inch. Lime was mixed with the dry composite charges before the 4-inch diameter PVC columns were loaded. A cyanide solution of 2.0 lb/ton was applied to the columns at a rate of 0.003 gpm/ft2 of column cross sectional area.

13.3Bottle Roll Tests

Bottle roll tests were conducted for 96 hours on thirteen samples ground to minus 1700, 300, 150, and 75 microns (10, 48, 100 and 200 mesh sizes); these recoveries were 62%, 91%, 94% and 95% respectively. All tests were conducted at 40% solids. Lime was added to adjust the pH of the pulps to between 10.5 and 11.0 before adding the cyanide. Sodium cyanide equivalent to 2.0 lb. per ton of solution was added to the alkaline pulps. Gold recoveries from the 10 mesh feeds ranged from 17.9% to 87.5%. Gold recoveries from the 48 mesh feeds ranged from 70.0% to 96.7%. Gold recoveries from the 100 mesh feeds ranged from 88.9% to 97.8%. Gold recoveries from the 200 mesh feeds ranged from 85.7% to 97.4%. Rate of recovery from the 10 mesh feed was moderate, but were fairly rapid for the other feed sizes.

After leaching, rinsing and draining, residues were removed from the columns and moisture samples taken immediately. The remaining leached residues were air dried and split to obtain a sample for a tail screen analysis. Tail screens were conducted to determine residual precious metal content and distribution.

13.4Gravity Tests

A gravity recoverable gold test was conducted on each of the 13 Spring Valley composites to determine response of the sample to gravity concentration. The gravity test consists of sequentially milling and processing a sample using a laboratory Knelson concentrator. Three sequential liberation/gravity concentration steps were conducted. Grind sizes evaluated were minus 20 mesh, 80% minus 65 mesh, 80% minus 100 mesh and 80% minus 200 mesh. The minus 20 mesh feeds were each processed through the Knelson concentrator. The resulting gravity rougher concentrate was cleaned by hand panning to produce a cleaner concentrate and a cleaner tail. The resulting rougher tailings were dried, blended and split to obtain a sample for tail screen analysis. The remaining rougher tailings were milled to the next grind size, and the process was repeated. Similarly, the resulting gravity rougher tailings from the second step were milled to the final grind size, and the process was again repeated.

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All 13 of the Spring Valley composites were amenable to gravity treatment at the feed sizes evaluated. Total rougher gold recoveries ranged from 78% to 97% and averaged 86% across all materials tested.

13.5Bond Mill Work Index

Four samples representing reduced and oxidized material were selected for Bond Mill Work Index (BWi) determinations. The tests were completed by Philips Enterprises LLC of Golden, Colorado. The BWi ranged from 16.31 to 21.67 kW-hr/st.

13.6Historical Test Work

Echo Bay conducted 144-hour bottle roll tests on seven 20 to 25 foot composites of RC cuttings logged as being in the oxide zone at McClelland Laboratories Inc. in 2002. Gold extractions progressed slowly, with extraction effectively complete after 96 hours. Cyanide consumption was low and lime requirements were moderate. Gold extractions ranged from 75% to 95% on nominal - 10 mesh material.

Glamis Gold conducted 96 hour bottle roll tests on three sulphide composites and two oxide composites in 2005. Composites were from HQ diameter core and tests were completed on both coarse crushed (nominal 10 mesh) and finely pulverized (200 mesh) material. Cyanide gold extraction ranged from 44%-88% from 10 mesh material, while gold extraction averaged 91%-95% from 200 mesh material.

In December 2005, samples from eight drill holes were submitted for metallurgical testing at McClelland Laboratories Inc. in Sparks, Nevada by Midway. Select samples were combined to produce 19 composites for gravity recoverable gold GRG testing. The composite samples were sequentially milled to progressively finer sizes, the resulting material (or gravity tailings after the first grind size) was processed using a laboratory Nelson Concentrator. The resulting concentrate and tailings were then assayed to determine gravity recovery of gold versus grind size. Testing in this way provides an estimate of the maximum recoverable gold values by gravity concentration. Recoveries for nine composites with head grades greater than 0.030 oz/t gold were between 67.5% and 96.5% with an average of 87.9%.

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The test samples described above are considered representative of the mineralization of the deposit as a whole. As of the date of this report, there are no additional processing factors that could have a significant effect on potential extraction.

 

13.7Summary & Recommendations

Scoping testwork has shown that the mineralization at Spring Valley is amenable to cyanidation, and also that a large percentage of mineralization may be recovered using gravity separation methods. Cyanide recoveries for Spring Valley are relatively slow, possibly due to the presence of coarse gold. It is recommended that the Spring Valley Venture undertake additional testwork to evaluate several processing options including all gravity, heap leach, and gravity with agitated leach.

14.MINERAL RESOURCE ESTIMATE

Zachary J. Black, SME-RM, an associate Resource Geologist with Gustavson is responsible for the estimation of the mineral resource herein. Mr. Black is a qualified person as defined by NI 43-101 and is independent of Midway and of Barrick. Gustavson estimated the mineral resource for the Spring Valley Project from drill-hole data, constrained by a single mineralized boundary with an Ordinary Kriging (“OK”) algorithm.

The Mineral Resources contained within this Technical Report have been classified under the categories of Measured, Indicated and Inferred in accordance with standards as defined by the Canadian Institute of Mining, Metallurgy and Petroleum (“CIM”) “CIM Definition Standards - For Mineral Resources and Mineral Reserves”, prepared by the CIM Standing Committee on Reserve Definitions and adopted by CIM Council on December 17, 2010. Classification of the resources reflects the relative confidence of the grade estimates.

14.1Block Model Physical Limits

Gustavson created a three dimensional (“3D”) block model in CAE Mining’s Studio software. The block model was created with individual block dimensions of 20 x 20 x 20 ft (xyz). The model origin is located at 1,319,880 east, 14,643,940 north, and at an elevation of 3,200 ft above sea level (“asl”). The block model extends 8,040 ft (402 blocks) to the east, 12,560 ft (628 blocks) to the north, and vertically 3,120 ft (156 blocks) to an elevation of 6,320 ft asl. All of the block model coordinates are stored as UTM NAD27, Zone 11 survey feet with elevations based on North American Vertical Datum (“NAVD”). All property and minerals within the block model extents are owned or claimed by Midway. Each of the blocks was assigned attributes of gold, resource classification, rock density, lithology, and a grade domain classification.

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14.2Data Used for the Grade Estimation

Gustavson used the exploration drillhole database as described in 12.1.1 for resource estimation. Drill hole data, including collar coordinates, down hole surveys, sample assay intervals, and geologic logs, were provided in a secure Microsoft Access database and as CSV files. The database is managed by Barrick under the Exploration, Development, and Joint Operating Agreement.

The present database has been updated to include the 2010, 2011, 2012, and available 2013 drill holes, which were completed since the previous mineral resource estimate. The drill hole database contains gold assay analytical information for 112,858 sample intervals from core, RC, and mud rotary drilling methods. All mud rotary drill samples were pre-collar samples taken within the alluvium and thus are not included in the resource estimation.

14.3Data

In order to assess the influence of geologic characteristics on assay data the individual files representing lithology, alteration, trace element analytical data, and gold analytical data were combined into a single interval file. The resulting file contained 121,488 intervals. The increase in the number of sample intervals results from the geologic or trace element data being collected on different intervals than the gold analytical data. Merging the intervals can subdivide individual assay intervals where the geologic data are recorded with a different interval pattern. The 121,488 samples were collected in both bedrock (99,821) and alluvium (21,667). Gustavson did not estimate mineral resources within the alluvium and the assay samples representing the alluvium are not included in the discussions below.

Metallic Screen assays are used as the primary assay database, when available, as this methodology is considered to handle coarse gold grade variability at Spring Valley more effectively than other assay techniques. Where Metallic Screen assays are not available, 30g fire assay values are used. Samples below detection limit (bdl) are treated as having a grade of half the detection limit applicable during the sampling campaign. (Typically 0.0001 oz/t Au) There is a distortion in the grade curves at the very low end caused by these bdl sample values, but it is not material to the estimate.

14.4Geologic Model

The geology of the resource area is characterized by a thick series of Permian/Triassic aged volcanic and meta-volcanic rocks, named the Koipato Group. The Kiopato Group is comprised of three members from oldest to youngest, the Limerick Greenstone, the Rochester Rhyolite, the Weaver Rhyolite. Mississippian to Triassic Leucogranite and rhyolite porphyry locally intruded the Permian/Triassic units. Quaternary alluvial and colluvial deposits overlie the bedrock units.

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The regional structural model is interpreted to have resulted from three stages of structural development of the Humboldt Range. The earliest was an east-west compressional event associated with the Nevadan Orogeny, resulting in regional folds and north-south faults and shear zones. The second stage marked a switch to extensional stresses which coincided with and controlled the mineralization along the north-south structures and through the associated dilatational zones. The north-south structures acted as conduits for fluids, which resulted in veins, stockworks, and disseminated mineralization along preferential flow paths. The final stage of structural development was an event related to Basin and Range tectonics which formed a graben block controlled by the Black Ridge fault system.

This structural model results in penetrative thrust faults overprinted by a complex structural system of high angle fracture sets.

Mineralization is hosted within complex structurally prepared fracture zones near the north-south faults and along the contacts between lithologic units. Mineralization is related to irregularly distributed quartz veining and alteration throughout the favorable intrusive rhyolite porphyry, and along the contacts with the greenstone and volcanoclastic units of the Rochester Member. Most quartz veins are in the ½-inch to 4-inch size range with associated alteration selvages of a few feet to tens of feet wide, varying to areas of dense quartz veining with pervasive alteration. Individual vein zones generally display limited lateral and vertical continuity; however, mineralized zones form broader corridors characterized by extensive lateral (along lithologic contacts) and depth continuity along the north-south trending faults. The project has been divided into five areas along the north-south trending structures and into three areas based on east-west structures (Figure 14-1). As structural offsets have continued through the Quaternary period there is offset represented in the mineralization trends. The orientation and sample statistics have been grouped within north-south structures. The resulting subdivided areas are the basis for the estimation domains.

 

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Figure 14-1 Fault and Estimation Domain Plan View

 

Domains 1100 – 1300 are the portion of Spring Valley to the east of the Limerick fault and represent an area of limited drilling with sporadic intervals of mineralization. This portion of the project is assumed to be unmineralized and has not been estimated.

Domains 2100 – 2300 are the portion of Spring Valley that represent the Limb domains. These domains are bound by the Reverse fault to the west and by the Limerick fault to the east and at depth. The mineralization in these domains strikes between N30E and N45E and dips approximately 30° to the west along the intrusive porphyry. Mineralization is found along lithologic contacts, the margins of the intrusive and near the low angle Limerick Fault.

Domains 3100 – 3300 comprise the Main domain and host the majority of mineralization. These domains are bound on east by the Reverse fault and on the west by the Black Ridge Fault. The mineralization within the Main domains resides near the two main structures, but is found in near tabular lenses related to contacts of the lithologic units and the margin of the intrusion.

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Domains 4000 and 5000 are to the west of the Black Ridge fault. The mineralization in these domains is primarily along lithologic contacts in close proximity the West and Black Ridge Faults.

14.5Exploratory Data Analysis

Gustavson completed an Exploratory Data Analysis (EDA) on the gold analytical information contained in the Spring Valley exploration database. The purpose of an EDA is to summarize the main characteristics of the data provided using both statistical and visual methods. Gustavson utilized Leapfrog Geo (Geo) and ioGas Software to analyze the assay data.

The assay and geologic information was visually inspected in 3-dimensions, cross-sections, and plan views in Geo. As with many precious metal exploration projects much of the drillhole assay data collected is within non-mineralized zones. Metallic screen assays have a lower detection limit of 0.0015 oz/t and as such the exploratory data analysis was limited to assay values above 0.002 oz/t. Filtering the data assisted in defining zones of structural offset and differing directions of maximum continuity (Figure 14-2).

 

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Figure 14-2 Oblique View of Filtered Gold Values (Au≥.002 oz/t) Limerick Trend Encircled

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The individual lithologic codes in the provided database were grouped into 7 primary lithologic units (Table 14-1) based on Midway’s understanding of the Spring Valley geology. Descriptive statistics were calculated for the grouped lithologies.

Table 14-1 Lithologic Groups

Grouped Lithology Lithology Codes
Alluvium (Qal) Qal
Breccia and Veins (BX_Vn) BX, VN
Fault (FLT) FLT,GG
Limerick (Lmk) AFT,LG,LK,LKAN,LKGW
Rhyolite (Rhy) RP,RY,RYLT,RYSP
Volcanoclastic Sediments (VCS) BC,FEL,SD,WT
Feldspar Porphyry (Inf) DI,FELN,FP,FPB,HP,IBX,MINT,MZ, BP

The descriptive statistics presented in Table 14-2 support the visual inference that the statistical analysis of the mineralization can be restricted to the gold assay values ≥ 0.002 oz/t as represented by the total sample populations 75 percentile. The statistics indicate that there are subtle differences in the mineralization by lithology with the feldspar porphyry containing the higher average grades. The Limerick lithology is statistically lower grade with only 10-percent of the assays reporting ≥ 0.002 oz/t gold. The mineralized portions of the Limerick are assumed to be near the contact with the Rochester rhyolite or at structural contacts.

Table 14-2 Spring Valley Project Sample Assay Gold Descriptive Statistics (oz/t)

Statistic Total Not Logged Breccia and Veins Faults Feldspar Porphyry Limerick Rhyolite Volcanoclastic Sediments
Number of Samples 99,821 6,280 2,473 4,105 19,371 22,652 16,633 28,307
Minimum (oz/t) 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001
Maximum (oz/t) 9.1001 1.8142 6.1834 0.7204 9.1001 5.3667 5.6438 2.4588
Mean (oz/t) 0.0065 0.0079 0.0112 0.0056 0.0105 0.0022 0.0056 0.0073
Median (oz/t) 0.0005 0.0004 0.0007 0.0007 0.0007 0.0001 0.0003 0.0007
Variance (oz/t2) 0.0050 0.0030 0.0167 0.0008 0.0145 0.0016 0.0034 0.0021
Std. Dev. (oz/t) 0.0705 0.0545 0.1292 0.0278 0.1205 0.0396 0.0580 0.0459
Kurtosis 8129.4 553.6 2108.8 298.8 4039.6 14879.2 5774.7 992.2
Skewness 77.3 21.3 44.4 15.1 59.0 112.4 65.9 26.1
COV 118.3 48.1 133.1 25.5 131.5 330.6 108.4 39.4

 

Descriptive statistics (Table 14-3), Cumulative Frequency Plots (CFP) (Figure 14-3), and Tukey box plots (Figure 14-4) were calculated for each lithology with a minimum gold value of ≥0.002 oz/t to compare the statistical populations to one another and to evaluate for any statistical outliers. The descriptive statistics restricted to ≥0.002 oz/t reduce the differences between lithologies with the Limerick still representing a slightly lower average grade. However, as the populations approach the upper percentiles of the CFP (Figure 14-3) they converge. This may indicate that a significant portion of the higher grade mineralization consists of stockwork veining or other structurally related mineralization within each of the lithologies. Statistical Tukey outliers are represented on both plots as open circle and triangle symbols.

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Table 14-3 Descriptive Statistics ≥0.002 oz/t Au by Lithology

 

Statistic Total Not Logged Breccia and Veins Faults Feldspar Porphyry Limerick Rhyolite Volcanoclastic Sediments
Number of Samples 25,250 1,673 899 1,092 7,156 2,224 3,748 8,458
Minimum (oz/t) 0.0020 0.0020 0.0020 0.0020 0.0020 0.0020 0.0020 0.0020
Maximum (oz/t) 9.1001 1.8142 6.1834 0.7204 9.1001 5.3667 5.6438 2.4588
Mean (oz/t) 0.0247 0.0285 0.0298 0.0200 0.0276 0.0193 0.0238 0.0234
Median (oz/t) 0.0071 0.0072 0.0090 0.0073 0.0087 0.0053 0.0071 0.0067
Variance (oz/t2) 0.0192 0.0106 0.0454 0.0026 0.0389 0.0157 0.0145 0.0067
Std. Dev. (oz/t) 0.1387 0.1028 0.2131 0.0512 0.1972 0.1252 0.1204 0.0818
Kurtosis 2129.1 153.1 776.6 86.1 1514.4 1503.0 1358.5 316.2
Skewness 39.8 11.3 27.0 8.2 36.2 35.9 32.2 14.9
COV 31.5 13.1 51.1 6.5 51.1 42.1 25.6 12.2

 

Figure 14-3 Gold (oz/t) Cumulative Frequency Plots by Lithology

 

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Figure 14-4 Gold (oz/t) Box Plots by Lithology

 

The high Coefficient of Variation (COV) within gold assays in each lithologic unit and the overall statistical similarities at the higher grade intervals between the individual lithologies suggests that lithology is not the primary controlling feature of the mineralization at Spring Valley; however, due to the difficulties in accurately defining the lithology from the drill hole samples a correlation between lithology an mineralization may be masked. Similar statistical results were encountered in Gustavson’s evaluation of gold correlation with alteration types.

Gold has been observed in quartz veins and adjacent alteration selvages as disseminated free gold. Free gold is likely deposited on fracture surfaces as well. Most quartz veinlets range from ½ inch to 4 inches in size, with associated alteration selvages from a few feet to tens of feet wide and variable areas of dense quartz veining with pervasive alteration.

It has been observed that gold is associated in certain areas of the system with zones of structural preparation as indicated by low RQD values and structural preparation observed in drill core. However, there is no observable correlation between RQD and gold grade, possibly because there are also areas of structural preparation, quartz veining, and gold mineralization which have healed and are no longer fractured, as well as areas of post-mineral faulting where there is low RQD but no mineralization.

Based on field and laboratory observations, mineralization at Spring Valley is postulated to be associated with RQD, specific alteration types, and lithology; however, statistical analyses do not necessarily support these hypotheses. The discrepancy between the postulated associations and the results of the statistical analysis may simply reflect the challenges of effectively logging complex geologic characteristics such as those present at Spring Valley.

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In an attempt to correlate the higher grades (in vein material) to the lower grade alteration selvages Gustavson conducted a proximity analysis. An indicator of 0.022 oz/t was selected to represent vein material (high grade) and statistics of data ≥0.002 oz/t, ≥0.004 oz/t, ≥0.006 oz/t, ≥0.008 oz/t, and ≥0.01 oz/t were tabulated for samples residing within 1, 2, 3, 4, and 5 intervals of in vein material. Table 14-5 summarizes the results of the study.

The proximity analysis identified that 61% of the mineralized (≥0.002 oz/t) material resides within approximately 25-ft of a higher grade (≥0.022 oz/t) interval. Additionally, the higher the minimum cutoff analyzed the stronger the correlation to the indicator (≥0.022 oz/t). The analysis is useful in separating the portion of data near the lower tail of the mineralized distribution that is not related to the higher grade zones. The histogram in Figure 14-5 displays the gold assay data within 5 intervals of a high grade sample and Figure 14-6 summarizes the results of the proximity analysis.

 

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Figure 14-5 Histogram of Samples within 5 Intervals (~25 ft) of a 0.022 oz/t Assay Interval

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Figure 14-6 Samples above Cutoff within Range of Vein (>0.022 oz/t) Assay Interval

Note that 84% of samples above 0.01 oz/t are within a 25-foot distance of vein intervals

Treating the vein material (>0.022 oz/t Au) to be representative of the mineralized structures, it is clear that the majority of mineralized material can be found in close proximity to these structures. This is consistent with patterns of mineralization observed in section and plan. A visual evaluation of the assay and geologic data in cross-section and plan view, in conjunction with the proximity analysis, reveals that while it is difficult to substantiate lithologic or alteration based domaining, there exists a significant spatial correlation between the higher grade samples and disseminated mineralization. It is Gustavson’s opinion that the statistical analyses justify the use of a grade boundary at +0.003 oz/t, as a proxy for the mineralized alteration selvages and vein zones, and domaining the resource within this grade boundary is both reasonable and appropriate.

14.6Compositing

A composite study comparing the population variance and average grades was completed (Figure 14-7). A composite length of 10-foot down-hole was selected for estimation as it is larger in length than the longest sample intervals; long enough to provide a variance reduction (40%) relative to using raw assay data, and still short enough to allow the estimate to show local variability of grade consistent with the sample distribution of the deposit. The composite statistics are summarized on Figure 14-7.

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Figure 14-7 Composite Study

14.7Capping

Grade capping is the practice for replacing statistical outliers with a maximum value from the assumed sampled distribution. This is done to better approximate the true mean of the sample population. The estimation of highly skewed grade distributions can be sensitive to the presence of even a few extreme values. Gustavson utilized a log scale cumulative Frequency Plot (“CFP”) of the composite data for gold ≥0.001 oz/t to identify the presence of statistical outliers (Figure 14-8). A cap was assigned for each domain as summarized in Table 14-4. The descriptive sample statistics are presented in Figure 14-8.

Table 14-4 Capped Value by Domain

Domain Description Au Cap (oz/t)
2100 - 2300 Limb (Red) 0.700
3100 -3300 Main (Green) 0.700
4000 West 1 (Cyan) 0.200
5000 West 2 (Blue) 0.030

 

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Figure 14-8 CFP Analysis by Domain

 

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14.8Grade Shell Generation

Leapfrog Geo software was used to generate grade boundaries using a Radial Basis Function (“RBF”) in conjunction with a dual kriging algorithm. Leapfrog implicitly defined a lower grade boundaries for the Project at a 0.003 oz/t cut-off based on 10-foot composited intervals using a structural trend defined by geologic observations and split by the individual domain boundaries (Figure 14-9). The grade boundary has been used to constrain each of the estimation domains. The grade boundary was used to code blocks and the drill-hole assay composites residing within the individual grade boundary solid. The descriptive statistics are summarized in Table 14-5.

 

Figure 14-9 Grade Boundary

Table 14-5 Capped 10-foot Composite Statistics ≥0.001 oz/t

Domain Below Inside Minimum Maximum Mean Variance Std. Dev. COV
2100 401 1389 0.0010 0.645 0.0233 0.0035 0.0590 2.53
2200 215 871 0.0010 0.676 0.0276 0.0043 0.0655 2.37
2300 174 661 0.0010 0.500 0.0151 0.0014 0.0374 2.48
3100 1111 4075 0.0010 0.700 0.0165 0.0017 0.0409 2.48
3200 362 1328 0.0010 0.700 0.0194 0.0020 0.0451 2.33
3300 861 2667 0.0010 0.700 0.0198 0.0022 0.0463 2.34
4000 254 841 0.0010 0.200 0.0148 0.0007 0.0273 1.85
5000 114 276 0.0010 0.030 0.0090 0.0001 0.0088 0.98

 

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14.9Variography

A variography analysis was completed to establish spatial variability of gold values in the deposit. Variography establishes the appropriate contribution that any specific composite should have when estimating a block volume value within a model. This is performed by comparing the orientation and distance used in the estimation to the variability of other samples of similar relative direction and distance.

Variograms were created for horizontal and vertical orientations in increments of 15° horizontally and 15° vertically. Search ellipsoid axis orientations were based on the results of the analysis. The sill and nugget values were taken from the omnidirectional and down-hole variograms, respectively. Table 14-6 summarizes the variogram parameters used for the analysis. The resultant variograms (Figures 14-10 through 14-12) were used to define the search ellipsoid responsible for the sample selection in the estimation of each block (Table 14-7).

The ellipse orientations are rotated dynamically to better represent changes in the strike and dip of the mineralization. A dynamic anisotropy was applied to both the search volume and to the variogram model. With this method, the orientation of the search ellipse and variogram model changes on a block by block basis to accommodate for local variations in the orientation of mineralization.

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Figure 14-10 Example Variograms, 2100-2300 domain

 

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Figure 14-11 Example Variograms, 3100-3300 domain

 

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Figure 14-12 Example Variograms, 3100-3300 domains

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Figure 14-13 Example Variograms, 4000-5000 domains

 

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Figure 14-14 Example Variograms, 4000-5000 domains

 

Table 14-6 Domain Variogram Parameters

2100 - 2300 Domain Variogram Parameters
Nugget (C0) C1 C2
  0.359 0.158 0.483
Axis Rotation Range 1 Range 2
Z -60 30 86
Y' 0 42 144
X' 45 45 164
3100 - 3300 Domain Variogram Parameters
Nugget (C0) C1 C2
  0.409 0.295 0.295
Axis Rotation Range 1 Range 2
Z 30 33 253
Y' 0 58 157
X' 15 65 247
4000 - 5000 Domain Variogram Parameters
Nugget (C0) C1 C2
  0.342 0.128 0.530
Axis Rotation Range 1 Range 2
Z -60 39 136
Y' -15 28 116
X' 180 26 299

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14.10Estimation Methodology

Gold grades were estimated in each domain by using incremental search ellipses oriented in the direction of maximum geologic and geostatistical continuity to provide an estimation of the gold grade within every block inside the grade shells. The estimation of each block was based on a factor of the distance in an anisotropic direction as established by the second structure range (Table 14-6) and from the variogram model and geologic observations of anisotropy. The 2100-2300 domains were set at a 3:3:1 anisotropy. The 3100 – 3300, 4000, and 5000 domains were set to 2:2:1 anisotropy.

Ordinary Kriging (OK) was used to estimate grade for all domains. Grade estimation uses a maximum of 3 composites from an individual drillhole, with a minimum of 4 and a maximum of 8 composites total used for estimation. The minimum number of composites was selected to ensure that a minimum of two separate drillholes contribute data for estimation of grade at a block. The maximum number of composites was set relatively low to limit grade smoothing in the estimation, and to allow for a higher local variability of grade. Estimation parameters are presented in Table 14-7.

 

Table 14-7 Estimation Parameters

Estimation Parameters
Zone Grade Shells
No. of composites 1st Pass 2nd Pass 3rd Pass
Min 4 4 4
Max 8 8 8
Max per Hole 3 3 3
Search Ellipsoid Distance
2100-2300 ½ (75x75x25) 1 (150x150x50) 2 (300x300x100)
3100-3300 ½ (125x125x62.5) 1 (250x250x125) 2 (500x500x250)
4000,5000 ½ (125x125x62.5) 1 (250x250x125) 2 (500x500x250)

 

14.11Mineral Resource Classification

The mineral resources were classified using the incremental search neighborhoods and a relationship between the distances to the closest composite used for the estimation of the block gold grade. Distance to closest composite is stored as anisotropic distance relative to the search volume. The Measured classification corresponds to blocks with 2 drillholes within ½ the range of the second variogram structure, while the Indicated classification corresponds to two drillholes within the range of the second variogram structure AND a single drillhole within 75% of the variogram range. Inferred material is limited to blocks within twice the variogram range of two drillholes for each domain.

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14.12Density

Density measurements for each lithology were provided to Gustavson. Each modeled lithology was assigned a density based on Table 14-8.

Table 14-8 Rock Type Density Summary

Grouped Lithology Density (ton/ft3)
Alluvium (Qal) 0.0787
Rhyolite (Rhy) 0.0794
SD (SD) 0.0787
Welded Tuff (WT) 0.0816
Breccia Conglomerate (BC) 0.0831
Feldspar Porphyry (Inf) 0.0820
Limerick Greenstone (Lmk) 0.0830
14.13Model Validation

Gustavson validated the results of the OK method by comparison with various alternative estimation methodologies. The combined evidence from these validation methods validates the OK method estimation model results.

14.13.1Statistical Model Comparison

ID2, and NN models were run to serve as comparison with the estimated results from the OK method. Descriptive statistics for the OK model along with those for the ID2 and NN, and 10-foot drill-hole composites for gold are shown in Tables 14-9 through 14-11.

Table 14-9 Descriptive Statistics for Domains 2100-2300 (Limb)

Domain 2100  Au ≥0.001 oz/t
Model Below Inside Minimum Maximum Mean variance Std. Dev. COV
CP10 401 1389 0.0010 0.645 0.0233 0.0035 0.0590 2.53
 OK 530 33251 0.0010 0.276 0.0166 0.0004 0.0207 1.25
 ID 656 33125 0.0010 0.299 0.0169 0.0005 0.0220 1.30
 NN 8470 25311 0.0010 0.645 0.0210 0.0027 0.0523 2.49
Domain 2200  Au ≥0.001 oz/t
Model Below Inside Minimum Maximum Mean variance Std. Dev. COV
CP10 215 871 0.0010 0.676 0.0276 0.0043 0.0655 2.37
 OK 510 29790 0.0010 0.295 0.0215 0.0007 0.0268 1.25
 ID 631 29669 0.0010 0.320 0.0220 0.0009 0.0295 1.34
 NN 7421 22879 0.0010 0.676 0.0287 0.0047 0.0683 2.38

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Domain 2300  Au ≥0.001 oz/t
Model Below Inside Minimum Maximum Mean variance Std. Dev. COV
CP10 174 661 0.0010 0.500 0.0151 0.0014 0.0374 2.48
 OK 366 25995 0.0010 0.189 0.0126 0.0002 0.0151 1.20
 ID 506 25855 0.0010 0.205 0.0133 0.0003 0.0173 1.30
 NN 5717 20644 0.0010 0.500 0.0163 0.0019 0.0439 2.69

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Table 14-10 Descriptive Statistics for Domains 3100-3300 (Main)

Domain 3100  Au ≥0.001 oz/t
Model Below Inside Minimum Maximum Mean variance Std. Dev. COV
CP10 1111 4075 0.0010 0.700 0.0165 0.0017 0.0409 2.48
 OK 1237 178015 0.0010 0.272 0.0129 0.0002 0.0143 1.10
 ID 1600 177652 0.0010 0.294 0.0133 0.0002 0.0157 1.18
 NN 38250 141002 0.0010 0.700 0.0160 0.0014 0.0373 2.34
Domain 3200  Au ≥0.001 oz/t
Model Below Inside Minimum Maximum Mean variance Std. Dev. COV
CP10 362 1328 0.0010 0.700 0.0194 0.0020 0.0451 2.33
 OK 383 90502 0.0010 0.237 0.0149 0.0003 0.0159 1.06
 ID 548 90337 0.0010 0.308 0.0158 0.0003 0.0184 1.16
 NN 17719 73166 0.0010 0.700 0.0187 0.0020 0.0447 2.39
Domain 3300  Au ≥0.001 oz/t
Model Below Inside Minimum Maximum Mean variance Std. Dev. COV
CP10 861 2667 0.0010 0.700 0.0198 0.0022 0.0463 2.34
 OK 346 156005 0.0010 0.302 0.0163 0.0004 0.0192 1.18
 ID 477 155874 0.0010 0.414 0.0165 0.0004 0.0205 1.24
 NN 30276 126075 0.0010 0.700 0.0195 0.0018 0.0425 2.18

 

Table 14-11 Descriptive Statistics for Domains 4000 and 5000 (West 1 and West 2)

Domain 4000  Au ≥0.001 oz/t
Model Below Inside Minimum Maximum Mean variance Std. Dev. COV
CP10 254 841 0.0010 0.200 0.0148 0.0007 0.0273 1.85
 OK 1737 52032 0.0010 0.081 0.0116 0.0001 0.0101 0.88
 ID 1664 52105 0.0010 0.107 0.0126 0.0002 0.0130 1.03
 NN 15502 38267 0.0010 0.200 0.0172 0.0011 0.0334 1.94
Domain 5000  Au ≥0.001 oz/t
Model Below Inside Minimum Maximum Mean variance Std. Dev. COV
CP10 114 276 0.0010 0.030 0.0090 0.0001 0.0088 0.98
 OK 561 24965 0.0010 0.026 0.0068 0.0000 0.0030 0.44
 ID 843 24683 0.0010 0.029 0.0073 0.0000 0.0037 0.51
 NN 8705 16821 0.0010 0.030 0.0092 0.0001 0.0092 1.00

 

The overall reduction of the maximum, standard deviation, and coefficient of variation within the OK and ID models represent an appropriate amount of smoothing to account for the point to block volume variance relationship (Figure 14-10). The kriging algorithm’s tendency is to provide more appropriate smoothing in densely drilled areas and to merge the mean of the estimation gradually as data becomes sparser. In this particular estimate there is a high density of data in higher grade portions of the resource as compared to the lower grade areas resulting in an overall reduction in the mean of the estimated blocks. The close relationship between the OK model and the ID model indicates that the OK model as estimated assumes a high degree of grade selectivity in the mining operation. Care will need to be taken at the reserve stage to ensure that the degree of selectivity in the model is appropriate to the mining technique envisioned. It may be necessary to apply dilution and ore loss factors to a reserve model based on this resource if relatively low selectivity (i.e. large scale open pit) mining techniques are employed.

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Figure 14-15 Model Comparison Cumulative Frequency Plot (OK red, ID blue, NN Black)

14.14Swath Plots

Swath plots were generated to compare average gold grade in the estimated gold grade from OK method, the Barrick model and the validation model methods (ID3 and NN). The results from the

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OK model method, plus those for the validation ID2 and Barrick model methods are compared using the swath plot to the distribution derived from the NN model method (Figure 14-11).

Figure 14-16 Elevation Swath Model

 

On a local scale, the NN model method does not provide a reliable estimate of grade, but on a much larger scale, it represents an unbiased estimation of the grade distribution based on the total data set. Therefore, if the OK model is unbiased, the grade trends may show local fluctuations on a swath plot, but the overall trend should be similar to the distribution of grade from the NN. The Nearest Neighbor estimation represents declustered composite grades, which eliminates the impact of variable drill spacing. Overall, there is good correlation between the grade models.

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14.15Mineral Resources

The mineral resource estimate for the Spring Valley Project is summarized in Table 14-12. This mineral resource estimate includes all of the available drill data through the effective date of this report and has been independently verified by Gustavson. Mineral resources are not mineral reserves and may be materially affected by economic, environmental, permitting, legal, socio-economic, marketing, political, or other factors.

Gustavson used a cutoff grade to test for reasonable prospects for economic extraction.

Baseline assumptions for cutoff grade are based on the formula:

·Cutoff Grade (oz/t) = Operating Cost (per t) / Metal Price (per oz) / Metal Recovery (%)
·Gold price assumption of $1537 /oz is based on the trailing 3-year average gold price as of the effective date of this report.

Basis of Assumptions Crush & Heap Leach Case:

·Operating Cost (Open Cut mining, Heap leach, Carbon Recovery): $7.00/ton (assuming 1.5:1 stripping ratio, $1.60/t mining cost, $3.30/t Heap Leach Process cost)
·Gold Price: $1537 /oz
·Gold Recovery (Crush and Heap Leach): 73%
·Cutoff grade = $7.00 /ton / $1537/oz / 73% = 0.0062 oz/t

Based on these assumptions, Gustavson considers that reporting resources at a 0.006 oz/t cutoff constitutes reasonable prospects for economic extraction based on an open pit mining scenario with carbon recovery following cyanide heap leaching. Mineral resources are reported in Table 14-12. Additional cutoff grades are included to allow for direct comparison with prior reporting. Gustavson cautions that economic viability can only be demonstrated through prefeasibility or feasibility studies.

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Table 14-12 Mineral Resource Statement for the Spring Valley Project,

Pershing County, Nevada, Gustavson Associates, LLC, April 30, 2014

  Measured Indicated Measured + Indicated Inferred
Cutoff Tons Gold Tons Gold Tons Gold Tons Gold 
oz/t (x1000) oz/t t. oz. (x1000) (x1000) oz/t t. oz. (x1000) (x1000) oz/t t. oz. (x1000) (x1000) oz/t t. oz. (x1000)
0.008 60,100 0.023 1,410 116,400 0.021 2,400 176,600 0.022 3,810 46,400 0.019 880
0.006 75,300 0.020 1,510 147,300 0.018 2,610 222,600 0.019 4,120 62,100 0.016 990
*0.004 91,500 0.017 1,590 179,100 0.016 2,780 270,600 0.016 4,370 78,400 0.014 1,070

 

Note * based on discussion of cutoff presented above, material below 0.006 oz/t is not considered resource for the purposes of this report. 0.004 oz/t cutoff is presented for informational purposes and for consistency with prior reports. Note: Values may not sum due to rounding.

 

14.16Pit-constrained Mineral Resource

In order to assess on a preliminary basis the portion of the Spring Valley resource accessible by open pit mining methods, Lechs-Grossman pit shells were generated at several gold price thresholds using Whittle Four X analyser version 4.0. Resource contained within various pit shells is presented as Table 14-13. Gustavson cautions that pit-constrained resources are not reserves and that economic viability can only be demonstrated through prefeasibility or feasibility studies.

Table 14-13 Pit-Constrained Resource for selected Whittle Shells.

 

  Measured Indicated Measured + Indicated Inferred
Pit Shell Tons Gold Tons Gold Tons Gold Tons Gold
$US (x1000) oz/t t. oz. (x1000) (x1000) oz/t t. oz. (x1000) (x1000) oz/t t. oz. (x1000) (x1000) oz/t t. oz. (x1000)
$1,100 41,500 0.029 1,200 69,700 0.024 1,640 111,200 0.026 2,840 19,000 0.022 370
$1,300 50,000 0.028 1,410 79,600 0.023 1,860 129,600 0.025 3,270 21,600 0.021 460
$1,500 54,500 0.027 1,490 88,100 0.023 2,030 142,600 0.025 3,510 22,900 0.022 490
$1,700 61,700 0.025 1,550 91,600 0.023 2,120 153,200 0.024 3,660 23,300 0.022 500

Note: All in-pit resources are reported at a 0.006 oz/t cutoff. Individual values may not sum due to rounding.

 

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15.ADJACENT PROPERTIES
15.1Coeur Rochester

The Rochester silver and gold project is located south of the Spring Valley project, 12 mi north of Lovelock, Nevada. Conventional open pit drill and blast truck and loader methods are used, which consist of mining from in-situ and stockpiled open pit sources using heap leach extraction methods.

According to the Coeur Mining NI 43-101 Technical Report dated November 6, 2013 Coeur's 100% owned Rochester mine has produced more than 134 million ounces of silver and 1.5 million ounces of gold from 1986 to August 2013. Rochester recovered 1.9 million silver ounces and 21,894 gold ounces year to date through August 31, 2013.

Effective September 16, 2013 proven and probable reserves totaled approximately 86 million silver ounces and 605,000 gold ounces, with additional measured and indicated resources of 69.3 million silver ounces and 560,000 gold ounces, and inferred resources were 26.2 million silver ounces and 105,000 gold ounces.

15.2Lincoln Hill Property

The Lincoln Hill gold and silver project is located approximately 3mi northeast of the Spring Valley project near Lovelock, Nevada.

According to the Rye Patch Gold Corp. (Rye Patch) website, 2013, the 4.5mi2 project is 100% owned by Rye Patch. The project status is at exploration stage with reported resources.

Effective September 2012, current measured and indicated resources contain 9.6 million ounces of silver and 334,000 ounces of gold at a gold grade of 0.395 g/t. Inferred resources contain 6.2 million ounces of silver and 165,000 ounces of gold at a gold grade of 0.36 g/t.

15.3Moonlight Project

The Moonlight gold and silver project is located north of the Spring Valley Project, northeast of Lovelock, Nevada. The project status is that of an exploration project.

According to the Terraco Gold Corp. (Terraco) website, 2013, the Moonlight Project is 100% owned by Terraco and comprises 13mi2. To date, Terraco has completed an aero-magnetic survey of the project area, collected and analyzed more than 400 rock samples, and drilled over 40 reverse-circulation drill holes ranging in depth from 400 to 800 feet, partially testing only a few of the target areas. There are no reported resources or reserves. The adjacent properties discussed above do not have shared resources and are not necessarily indicative of the resources of the Spring Valley Project.

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16.OTHER RELEVANT DATA AND INFORMATION

Gustavson knows of no additional relevant data or information that is not contained within this report.

 

17.INTERPRETATION AND CONCLUSIONS
17.1Environmental

There are no known environmental liabilities on the Spring Valley project.

17.2Geology and Deposit Type

The Spring Valley deposit is hosted within structurally prepared zones within a high-potassium porphyry intrusion and the overlying felsic volcanic rocks. Primary mineralizing fluid flow is related to steeply dipping, N20E to N30E- trending, deep-seated faults. Mineral emplacement is localized within structural preparation along these faults, as well as on contact horizons, deformation structures, and within permissive host rocks within the local graben /basin. The mineralization is associated with relatively thin, crystalline quartz veins that have large alteration selvages. In areas of dense quartz veining, the alteration selvages coalesce into regions of pervasively altered and veined rock.

17.3Exploration, Drilling, and Analytical

The property has been explored using a variety of techniques including mapping, geophysical surveys, and geochemical sampling. The Spring Valley resource area has been drilled with a total of 672 holes totaling 603,731 feet, including 531 Reverse Circulation (RC) drill holes totaling 428,500 feet and 141 diamond core holes totaling 173,011 feet.

All drill intervals were first assayed by a 30 gram fire assay and mineralized intervals have been systematically re-assayed using MSFA. Where available, the MSFA numbers were utilized in the resource estimate. The project data is stored in a secure database. Assay and geology data have been checked for accuracy for all programs prior to 2009, and spot checked in the Barrick programs from 2009 through 2013.

Gustavson is of the opinion that exploration activities, drilling, and analytical procedures are being conducted in manner that meets or exceeds industry best practice.

17.4Quality Assurance/Quality Control

Gustavson has reviewed the QA/QC assay programs and believes the programs provide adequate confidence in the data. Sample standard failures and the samples associated with erroneous blank samples have been reanalyzed prior to the completion of this Report and the results are comparable to the original assay.

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17.5Mineral Processing and Metallurgical Testing

The Spring Valley project mineralized material is potentially amenable to both gravity and heap leach recovery methods.

The test samples described in the Mineral Processing and Metallurgical testing item of this Technical Report are representative of the mineralization of the deposit as a whole. As of the date of this report, there are no processing factors that could have a significant effect on potential extraction.

17.6Data Verification

Gustavson received original assay certificates in pdf and comma delimited format for all samples included in the current drill hole database. A random manual check of 1,210 samples within the database against the original certificate revealed 3 total errors. The results of the analysis indicate that the data imported into the database matches the certificates 99.7% of the time with a confidence interval of ± 0.56% at a 95% confidence level. Gustavson considers the database adequate for estimation of mineral resource estimation purposes.

17.7Resource

Within the main portion of the deposit, drill density is within 150 foot spacing, which is adequate to describe measured and indicated resources, given the variogram and the relative continuity of the resource estimate. However, some areas of the deposit are still in need of infill holes. Closer spaced drilling in these areas will be required to further upgrade the resource classification. Additionally there are areas of the project which are open to expansion of extents of mineralization.

 

18.RECOMMENDATIONS

Gustavson recommends the following program to advance the Spring Valley Project towards eventual development. Scoping Study

Gustavson recommends that Midway complete a scoping study (PEA)on the project to evaluate proposed mining and processing methodologies, and economics associated with the implementation of various crushing, grinding, heap leach, and gravity recovery circuit combinations. The PEA should be completed to 43-101 standards and designed to support Midway’s reporting requirements as an independent issuer.

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18.1Geologic Model

Gustavson understands that Barrick is undertaking systematic relogging of the drilling including trace element analysis in an effort to refine the geologic and alteration model for the deposit. Gustavson recommends that Midway maintain a level of engagement in the relogging parameters and process in order to facilitate information transfer and share interpretive insights. The results of this logging should be considered in any resource updates moving forward.

18.2Metallurgical Study

Existing metallurgical studies have established that gold at Spring Valley is amenable to cyanidation and to gravity separation. Gustavson recommends that additional metallurgical studies be completed to evaluate the mix of mineral processing methods best suited for the mineralization at Spring Valley. The evaluation should include the study of conventional cyanidation at different crush sizes, as well as the impact of gravity concentration at different steps in the process stream. Testwork should include samples of mineralization of various alteration and oxidation types.

18.3Geotechnical and Hydrogeological Study

Gustavson recommends that the existing Golder pit slope analysis and geotechnical studies be reviewed to identify critical geotechnical areas and to define a geotechnical exploration program to support final design parameters. The Golder geotechnical studies should form the basis for mine design for the proposed PEA. Additionally, Gustavson recommends that the preliminary hydrogeological studies be reviewed to determine critical path to support project water needs, secure remaining required water rights, and address potential pit dewatering concerns. This information should be included in the support of a proposed PEA.Environmental Permitting

Gustavson recommends that continued work towards meeting the requirements of the State of Nevada to permit a mine on public land should include in the short term:

·Finalize Class III Cultural Survey report;
·Endangered Species Act (ESA) and other biological requirements; and
·Ongoing collection and evaluation of environmental baseline data.
·Installation and monitoring of groundwater monitoring as recommended for hydrologic models and baseline studies.
18.4Exploration Program

Continued exploration diamond core drilling should be targeted in three areas within and adjacent to the immediate mineral resource area:

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·Infill and step out drilling at the furthest south extent of drilling near the flanks of Gold Mountain.
·Exploration drilling along the Wabash fault that bisects the main Spring Valley resource. Extensions of this fault to both the east and west of the main resource have the potential to host mineralization that has not yet been tested. Placer gold is common along the trace of the fault to the SE.
·Infill and step out drilling targeting the lower Felsic Porphyry unit at depth in the main resource area, to the northern extents of the project and along the eastern Limerick fault.
·Limited infill drilling, primarily in those areas where substantial in-pit inferred mineralization has been identified, or in areas of high potential for pit expansion.
18.5Budget

Under the terms of the Joint Venture Agreement, Barrick has assumed the responsibility for the exploration and development activities. The Spring Valley Joint Venture has a project development budget which includes most of the recommendations listed above. The SVV project is operated by Barrick, with the costs shared by Barrick and Midway Gold, according to the terms of the Joint Venture Agreement.

Midway gold has exercised a carry option such that Barrick will carry Midway’s share of the development costs, to be recovered, along with accrued interest at prime +2%, from 90% of Midway’s share of future production. Under the terms of this carry option, Barrick shall earn an additional 5% interest (for a total of 75%) in the Spring Valley Venture upon completion of construction of the mine. Accordingly, Midway’s share of the PFS and exploration costs are estimated as 25% of the total cost

Table 18-1 presents the 2014-2015 development and exploration budgets for the Spring Valley Venture, as well as budget line items for Midway based on the recommendations described above.

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Table 18-1 Proposed Budget

Midway Studies & Reports Costs (US$)
Metallurgical Studies 120,000
Geotechnical Review 30,000
Hydrogeologic Review 30,000
Scoping Study (PEA) 150,000
Midway Reporting Subtotal $330,000
Spring Valley Venture PreFeasibility Study
Hydrology Studies & Test Wells 2,125,000
Geochemistry, including ARD 982,000
Geotechnical 500,000
Metallurgy 1,070,000
Mine Planning and Site Design 700,000
Permit Development 150,000
Archaeological, Community & Related 285,000
Environmental Studies 875,000
Land & Water Rights 3,100,000
Condemnation Drilling 500,000
Subtotal $ 10,287,000
Midway Share at 25% $ 2,571,750
Spring Valley Venture Exploration
Exploration Program 2014 - 2015 12,000,000
Subtotal $ 12,000,000
Midway Share at 25% $ 3,000,000
Total Budget (Midway Share)
Total Budget $5,901,750

 

 

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19.REFERENCES

Ashleman, J.C. 2007. Geologic Map of the Central Part of the Spring Valley Project, Pershing County, Nevada. s.l.: Midway Gold Corp., 2007. Unpublished Consultants Report.

BLM. 2007. Midway Resources Inc. Spring Valley Exploration Project, Pershing County Nevada. s.l.: Winnemucca Field Office, Bureau of Land Management, 2007. Environmental Assessment NV-020-07-EA-02.

Coeur Mining. Rochester Mine, Lovelock Nevada, USA, Technical Report, November 6, 2013

 

Francois-Bongarcon, D. 2007. Spring Valley Sampling. s.l.: AMEC E&C Services, 2007. Report for Midway Gold Corp., September 2007.

Griffith, D. and Ristorcelli, S., 2004. Updated Summary Report on the Spring Valley Property, Pershing County Nevada. s.l.: Report Prepared for Midway Gold Corp. by Mine Development Associates, September 2004.

Johnson, M. 1977. Geology and Mineral Deposits of Pershing County, Nevada. s.l.: Nevada, 1977.

LeLacheur, E., Harris, D., Mosch, D., Edelen, J., McMillin, S., 2009, Spring Valley Project, Nevada, NI 43-101 Technical Report: Prepared by Midway Resources Inc. for Midway Gold Corp., March, 2009.

Neal, W. S. 2004. Geology and Mineralization of the Spring Valley Project. s.l.: Midway Gold Corp., 2004. Unpublished Company Report, August 2004.

Pitard, F.F. 2004. Review of Sampling Systems and Sampling Practices at the Spring Valley Exploration Project. s.l.: Francis Pitard Sampling Consultants, Broomfield, Colorado, 2004. Report Prepared for Global Geologic Services, March 2004.

Ristorcelli, S., 2003. Summary Report on the Spring Valley Property, Pershing County, Nevada. s.l.: Prepared for Midway Gold Corp. by Mine Development Associates Report August 2003.

ryepatchgold.com. 2014

 

Scott E. Wilson Consulting, Inc. Technical Report, Rye Patch Gold Corp., Lincoln Hill Property, Pershing County, Nevada, USA, September 17, 2012

 

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Stiles, C.A. 2008. Spring Valley Project 2007 Annual Exploration Progress Report. s.l.: Midway Gold Corp., 2008. Unpublished Company Report, January, 2008.

terracogold.com. 2013

 

TGC Holdings Ltd. NI 43-101 Technical Report on the Moonlight Project, Pershing County, Nevada, USA, December 15, 2010

 

Wakefield, T. and Kuhl, T., 2008. NI-43-101 Technical Report, Spring Valley Property, Pershing County Nevada. s.l.: Report Prepared for Midway Gold Corp. by AMEC E&C Services, March, 2008.

Wakefield, T. and Seibel, G., 2006. NI-43-101 Technical Report, Spring Valley Property, Pershing County Nevada. s.l.: Report Prepared for Midway Gold Corp. by AMEC E&C Services, June, 2006.

Wallace, R.E., Tatlock, D.B., Silberling, N.J., and Irwin, W.P. 1969. Geologic Map of the Unionville Quadrangle, Pershing County, Nevada. s.l.: United States Geological Survey, 1969. MAP GQ-820.

Watson, J., 2010, Spring Valley Project, 2009 Annual Report of Operations: Barrick/Midway Resources Inc., Unpublished Company Report, June, 2010.

Watson, J., 2011, Spring Valley Project, 2010 Annual Report of Operations: Barrick/Midway Resources Inc., Unpublished Company Report, January, 2001.

Wright, J .L. 2004. Spring Valley Property, CSMAT Survey, MapInfo Database. s.l.: J.L. Wright Geophysics, February 2004, 2004. Report for Midway Gold Corp.

—. 2006. Spring Valley Property Gravity Compilation. s.l.: J.L. Wright Geophysics, 2006. Report for Midway Gold Corp., May 2006.

—. 2005. Spring Valley Property Ground Magnetics and Gravity Surveys. s.l.: J.L. Wright Geophysics, 2005. Report for Midway Gold Corp., April 2005.

 

 

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Appendix A: Claims List Exhibit

Serial Num Claim Name Book / Page Number Location Date
NMC140862 HMS #4 106/179 12/5/1979
NMC140863 HMS #5 106/180 12/5/1979
NMC140864 HMS #6 106/181 12/5/1979
NMC140941 HMS #84 106/258 1/24/1980
NMC140942 HMS #85 106/259 1/24/1980
NMC140943 HMS #86 106/260 1/25/1980
NMC140944 HMS #87 106/261 1/25/1980
NMC349508 SDB #1 173/127 9/5/1985
NMC349509 SDB #2 173/128 9/5/1985
NMC349510 SDB #3 173/129 9/5/1985
NMC349511 SDB #4 173/130 9/5/1985
NMC349512 SDB #5 173/131 9/6/1985
NMC349513 SDB #6 173/132 9/6/1985
NMC349514 SDB #7 173/133 9/6/1985
NMC349515 SDB #8 173/134 9/6/1985
NMC364282 IDA #12 177/124 3/11/1986
NMC364283 IDA #13 177/125 3/11/1986
NMC364284 IDA #14 177/126 3/11/1986
NMC364285 IDA #15 177/127 3/11/1986
NMC364286 IDA #16 177/128 3/11/1986
NMC364287 IDA #17 177/129 3/11/1986
NMC364288 IDA #18 177/130 3/11/1986
NMC364289 IDA #19 177/131 3/11/1986
NMC364290 IDA #20 177/132 3/11/1986
NMC364291 IDA #21 177/133 3/11/1986
NMC364292 IDA #22 177/134 3/11/1986
NMC364293 IDA #23 177/135 3/11/1986
NMC364295 IDA #25 177/137 3/11/1986
NMC364363 SHO #3 177/205 3/19/1986
NMC364364 SHO #4 177/206 3/18/1986
NMC364365 SHO #5 177/207 3/18/1986
NMC364366 SHO #6 177/208 3/20/1986
NMC364367 SHO #7 177/209 3/20/1986
NMC364368 SHO #8 177/210 3/20/1986
NMC364369 SHO #9 177/211 3/20/1986
NMC364370 SHO #10 177/212 3/20/1986
NMC364371 SHO #11 177/213 3/20/1986

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Serial Num Claim Name Book / Page Number Location Date
NMC364372 SHO #12 177/214 3/20/1986
NMC364373 SHO #13 177/215 3/20/1986
NMC364374 SHO #14 177/216 3/20/1986
NMC364375 SHO #15 177/217 3/20/1986
NMC364376 SHO #16 177/218 3/20/1986
NMC364377 SHO #17 177/219 3/20/1986
NMC364378 SHO #18 177/220 3/20/1986
NMC364379 SHO #19 177/221 3/20/1986
NMC364380 SHO #20 177/222 3/20/1986
NMC364384 SHO #24 177/226 3/19/1986
NMC364385 SHO #25 177/227 3/19/1986
NMC364386 SHO #26 177/228 3/19/1986
NMC364387 SHO #27 177/229 3/19/1986
NMC364388 SHO #28 177/230 3/19/1986
NMC364389 SHO #29 177/231 3/19/1986
NMC364390 SHO #30 177/232 3/19/1986
NMC364391 SHO #31 177/233 3/19/1986
NMC364392 SHO #32 177/234 3/18/1986
NMC364393 SHO #33 177/235 3/19/1986
NMC364394 SHO #34 177/236 3/19/1986
NMC364395 SHO #35 177/237 3/19/1986
NMC364396 SHO #36 177/238 3/19/1986
NMC364397 SHO #37 177/239 3/19/1986
NMC364398 SHO #38 177/240 3/19/1986
NMC364399 SHO #39 177/241 3/19/1986
NMC364400 SHO #40 177/242 3/19/1986
NMC364401 SHO #41 177/243 3/19/1986
NMC364402 SHO #42 177/244 3/19/1986
NMC364403 SHO #43 177/245 3/19/1986
NMC364404 SHO #44 177/246 3/19/1986
NMC364405 SHO #45 177/247 3/19/1986
NMC364406 SHO #46 177/248 3/19/1986
NMC364407 SHO #47 177/249 3/19/1986
NMC364408 SHO #48 177/250 3/19/1986
NMC364409 SHO #49 177/251 3/19/1986
NMC364410 SHO #50 177/252 3/19/1986
NMC364411 SHO #51 177/253 3/19/1986
NMC364412 SHO #52 177/254 3/19/1986

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Serial Num Claim Name Book / Page Number Location Date
NMC364413 SHO #53 177/255 3/19/1986
NMC364414 SHO #54 177/256 3/19/1986
NMC364415 SHO #55 177/257 3/19/1986
NMC364416 SHO #56 177/258 3/19/1986
NMC364417 SHO #57 177/259 3/19/1986
NMC364418 SHO #58 177/260 3/20/1986
NMC364419 SHO #59 177/261 3/20/1986
NMC371072 Porcupine #1 180/24 6/20/1986
NMC371073 Porcupine #2 180/25 6/20/1986
NMC371074 Porcupine #3 180/26 6/20/1986
NMC371075 Porcupine #4 180/27 6/20/1986
NMC371076 Porcupine #5 180/28 6/20/1986
NMC371077 Porcupine #6 180/29 6/20/1986
NMC371078 Porcupine #7 180/30 6/20/1986
NMC371079 Porcupine #8 180/31 6/20/1986
NMC371080 Porcupine #9 180/32 6/20/1986
NMC371081 Porcupine #10 180/33 6/20/1986
NMC371082 Porcupine #11 180/34 6/20/1986
NMC39574 Crown Hills #7 42/510 8/22/1972
NMC39593 Crown Hills #8 42/511 8/22/1972
NMC39594 Crown Hills #9 42/512 8/22/1972
NMC39595 Crown Hills #10 42/513 8/22/1972
NMC662873 Porcupine #28 267/567 8/27/1992
NMC748203 SV 8 304/446 6/5/1996
NMC748205 SV 10 304/448 6/5/1996
NMC748207 SV 12 304/450 6/5/1996
NMC748209 SV 14 304/452 6/5/1996
NMC748211 SV 16 304/454 6/5/1996
NMC748213 SV 18 304/456 6/5/1996
NMC748215 SV 20 304/458 6/5/1996
NMC748222 SV 27 304/465 6/5/1996
NMC748224 SV 29 304/467 6/5/1996
NMC748225 SV 30 304/468 6/5/1996
NMC748226 SV 31 304/469 6/5/1996
NMC748227 SV 32 304/470 6/5/1996
NMC748228 SV 33 304/471 6/5/1996
NMC748229 SV 34 304/472 6/5/1996

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Serial Num Claim Name Book / Page Number Location Date
NMC748230 SV 35 304/473 6/5/1996
NMC748231 SV 36 304/474 6/5/1996
NMC748232 SV 37 304/475 6/5/1996
NMC748233 SV 38 304/476 6/5/1996
NMC748234 SV 39 304/477 6/5/1996
NMC748235 SV 40 304/478 6/5/1996
NMC748236 SV 41 304/479 6/5/1996
NMC748237 SV 42 304/480 6/5/1996
NMC748238 SV 43 304/481 6/5/1996
NMC748239 SV 44 304/482 6/5/1996
NMC780754 Freedom #2 325/50 11/3/1997
NMC785920 Freedom #1 325/522 11/3/1997
NMC811224 Duffy #1 348/308 1/4/2000
NMC811225 Duffy #2 348/309 1/4/2000
NMC817628 SV 1 352/678 6/21/2000
NMC817629 SV 2 352/679 6/21/2000
NMC817630 SV 3 352/680 6/21/2000
NMC817631 SV 4 352/681 6/21/2000
NMC817632 SV 5 352/682 6/21/2000
NMC817633 SV 6 352/683 6/21/2000
NMC817634 SV 7 352/684 6/21/2000
NMC817635 SV 9 352/685 6/21/2000
NMC817636 SV 11 352/686 6/21/2000
NMC817637 SV 13 352/687 6/21/2000
NMC817638 SV 15 352/688 6/21/2000
NMC817639 SV 17 352/689 6/21/2000
NMC817640 SV 19 352/690 6/21/2000
NMC817641 SV 21 352/691 6/21/2000
NMC817642 SV 22 352/692 6/21/2000
NMC817643 SV 23 352/693 6/21/2000
NMC817644 SV 24 352/694 6/21/2000
NMC817645 SV 25 352/695 6/21/2000
NMC817646 SV 26 352/699 6/21/2000
NMC817647 SV 28 352/697 6/21/2000
NMC825454 SV 51 362/325 10/4/2001
NMC825455 SV 52 362/326 10/4/2001
NMC825456 SV 53 362/327 10/4/2001
NMC825457 SV 54 362/328 10/4/2001

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Serial Num Claim Name Book / Page Number Location Date
NMC832254 SV 60 369/571 8/10/2002
NMC832255 SV 61 369/572 8/10/2002
NMC832256 SV 62 369/573 8/10/2002
NMC832257 SV 63 369/574 8/10/2002
NMC832258 SV 64 369/575 8/10/2002
NMC832259 SV 65 369/576 8/10/2002
NMC832260 SV 66 369/577 8/10/2002
NMC832261 SV 67 369/578 8/10/2002
NMC832262 SV 68 369/579 8/10/2002
NMC832263 SV 69 369/580 8/10/2002
NMC832264 SV 70 369/581 8/10/2002
NMC832265 SV 71 369/582 8/10/2002
NMC832266 SV 72 369/583 8/13/2002
NMC832267 SV 73 369/584 8/13/2002
NMC832268 SV 74 369/585 8/13/2002
NMC832269 SV 75 369/586 8/13/2002
NMC832270 SV 76 369/587 8/9/2002
NMC832271 SV 77 369/588 8/9/2002
NMC832272 SV 78 369/589 8/9/2002
NMC832273 SV 79 369/590 8/9/2002
NMC832274 SV 80 369/591 8/30/2002
NMC832275 SV 81 369/592 8/30/2002
NMC832276 SV 82 369/593 8/30/2002
NMC832277 SV 83 369/594 8/30/2002
NMC860702 SV 45 380/569 11/9/2003
NMC860703 SV 46 380/570 11/9/2003
NMC860704 SV 47 380/571 11/9/2003
NMC860705 SV 48 380/572 11/9/2003
NMC860706 SV 49 380/573 11/9/2003
NMC860707 SV 50 380/574 11/9/2003
NMC860708 SV 51 380/575 11/9/2003
NMC860709 SV 52 380/576 11/9/2003
NMC860710 SV 53 380/577 11/9/2003
NMC860711 SV 54 380/578 11/9/2003
NMC860712 SV 55 380/579 11/9/2003
NMC860713 SV 56 380/580 11/9/2003
NMC860714 SV 57 380/581 11/9/2003
NMC860715 SV 58 380/582 11/9/2003

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Serial Num Claim Name Book / Page Number Location Date
NMC860716 SV 59 380/583 11/9/2003
NMC860717 SV 60 380/584 11/9/2003
NMC860718 SV 61 380/585 11/9/2003
NMC860719 SV 62 380/586 11/9/2003
NMC860720 SV 63 380/587 11/9/2003
NMC860721 SV 64 380/588 11/9/2003
NMC860722 SV 65 380/589 11/9/2003
NMC860723 SV 66 380/590 11/9/2003
NMC860724 SV 67 380/591 11/9/2003
NMC860725 SV 68 380/592 11/9/2003
NMC860726 SV 69 380/593 11/9/2003
NMC860727 SV 70 380/594 11/9/2003
NMC860728 SV 71 380/595 11/9/2003
NMC860729 SV 72 380/596 11/9/2003
NMC860730 SV 73 380/597 11/9/2003
NMC860731 SV 74 380/598 11/9/2003
NMC860732 SV 75 380/599 11/9/2003
NMC860733 SV 76 380/600 11/9/2003
NMC860734 SV 77 380/601 11/9/2003
NMC860735 SV 78 380/602 11/9/2003
NMC872357 SV 84 384/488 5/12/2004
NMC872358 SV 85 384/489 5/12/2004
NMC872359 SV 86 384/490 5/12/2004
NMC872360 SV 87 384/491 5/12/2004
NMC872361 SV 88 384/492 5/12/2004
NMC872362 SV 89 384/493 5/12/2004
NMC872363 SV 90 384/494 5/12/2004
NMC872364 SV 91 384/495 5/12/2004
NMC872365 SV 92 384/496 5/12/2004
NMC872366 SV 93 384/497 5/12/2004
NMC872367 SV 94 384/498 5/12/2004
NMC872368 SV 95 384/499 5/12/2004
NMC872369 SV 96 384/500 5/12/2004
NMC872370 SV 97 384/501 5/12/2004
NMC872371 SV 98 384/502 5/12/2004
NMC872372 SV 99 384/503 5/12/2004
NMC887449 SV 100 390/17 10/19/2004
NMC887450 SV 101 390/18 10/18/2004

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Serial Num Claim Name Book / Page Number Location Date
NMC887451 SV 102 390/19 10/18/2004
NMC887452 SV 103 390/20 10/18/2004
NMC887453 SV 104 390/21 10/18/2004
NMC887454 SV 105 390/22 10/18/2004
NMC887455 SV 106 390/23 10/18/2004
NMC887456 SV 107 390/24 10/18/2004
NMC887457 SV 108 390/25 10/18/2004
NMC887458 SV 109 390/26 10/18/2004
NMC887459 SV 110 390/27 10/18/2004
NMC887460 SV 111 390/28 10/18/2004
NMC887461 SV 112 390/29 10/18/2004
NMC887462 SV 113 390/30 10/18/2004
NMC887463 SV 114 390/31 10/18/2004
NMC887464 SV 115 390/32 10/18/2004
NMC887465 SV 116 390/33 10/18/2004
NMC887466 SV 117 390/34 10/18/2004
NMC887467 SV 118 390/35 10/18/2004
NMC887468 SV 119 390/36 10/18/2004
NMC887469 SV 120 390/37 10/18/2004
NMC887470 SV 121 390/38 10/19/2004
NMC887471 SV 122 390/39 10/19/2004
NMC887472 SV 123 390/40 10/19/2004
NMC887473 SV 124 390/41 10/19/2004
NMC887474 SV 125 390/42 10/19/2004
NMC889143 SV 126 390/437 11/10/2004
NMC889144 SV 127 390/438 11/10/2004
NMC889145 SV 128 390/439 11/15/2004
NMC889146 SV 129 390/440 11/15/2004
NMC889147 SV 130 390/441 11/15/2004
NMC889148 SV 131 390/442 11/15/2004
NMC889149 SV 132 390/443 11/15/2004
NMC889150 SV 133 390/444 11/15/2004
NMC889151 SV 134 390/445 11/15/2004
NMC889152 SV 135 390/446 11/15/2004
NMC906917 SVP 1 398/285 6/16/2005
NMC906918 SVP 2 398/286 6/16/2005
NMC906919 SVP 3 398/287 6/16/2005
NMC906920 SVP 4 398/288 6/16/2005

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Serial Num Claim Name Book / Page Number Location Date
NMC906921 SVP 5 398/289 6/16/2005
NMC906922 SVP 6 398/290 6/16/2005
NMC906923 SVP 7 398/291 6/16/2005
NMC906924 SVP 8 398/292 6/16/2005
NMC906925 SVP 9 398/293 6/16/2005
NMC906926 SVP 10 398/294 6/16/2005
NMC906927 SVP 11 398/295 6/16/2005
NMC906928 SVP 12 398/296 6/16/2005
NMC906929 SVP 13 398/297 6/16/2005
NMC906930 SVP 14 398/298 6/16/2005
NMC906931 SVP 15 398/299 6/16/2005
NMC906932 SVP 16 398/300 6/16/2005
NMC906933 SVP 17 398/301 6/16/2005
NMC906934 SVP 18 398/302 6/16/2005
NMC906935 SVP 19 398/303 6/16/2005
NMC906936 SVP 20 398/304 6/16/2005
NMC906937 SVP 21 398/305 6/16/2005
NMC906938 SVP 22 398/306 6/16/2005
NMC906939 SVP 23 398/307 6/16/2005
NMC906940 SVP 24 398/308 6/16/2005
NMC906941 SVP 25 398/309 6/16/2005
NMC906942 SVP 26 398/310 6/16/2005
NMC906943 SVP 27 398/311 6/16/2005
NMC906944 SVP 28 398/312 6/16/2005
NMC906945 SVP 29 398/313 6/16/2005
NMC906946 SVP 30 398/314 6/16/2005
NMC906947 SVP 31 398/315 6/16/2005
NMC906948 SVP 32 398/316 6/16/2005
NMC906949 SVP 33 398/317 6/16/2005
NMC906950 SVP 34 398/318 6/16/2005
NMC906951 SVP 35 398/319 6/16/2005
NMC906952 SVP 36 398/320 6/16/2005
NMC906953 SVP 37 398/321 6/16/2005
NMC906954 SVP 38 398/322 6/16/2005
NMC906955 SVP 39 398/323 6/16/2005
NMC906956 SVP 40 398/324 6/16/2005
NMC906957 SV 136 398/281 6/9/2005
NMC906958 SV 137 398/282 6/9/2005

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Serial Num Claim Name Book / Page Number Location Date
NMC906959 SV 138 398/283 6/9/2005
NMC906960 SV 139 398/284 6/9/2005
NMC925039 SV 146 407/352 2/11/2006
NMC925040 SV 147 407/353 2/11/2006
NMC925041 SV 148 407/354 2/11/2006
NMC925042 SV 149 407/355 2/11/2006
NMC925043 SV 150 407/356 2/11/2006
NMC925044 SV 151 407/357 2/11/2006
NMC925045 SV 152 407/358 2/11/2006
NMC925046 SV 153 407/359 2/11/2006
NMC925047 SV 154 407/360 2/11/2006
NMC925048 SV 155 407/361 2/9/2006
NMC925049 SV 156 407/362 2/9/2006
NMC925050 SV 157 407/363 2/9/2006
NMC925051 SV 158 407/364 2/9/2006
NMC925052 SV 159 407/365 2/9/2006
NMC925053 SV 160 407/366 2/9/2006
NMC925054 SV 161 407/367 2/9/2006
NMC925055 SV 162 407/368 2/9/2006
NMC925056 SV 163 407/369 2/9/2006
NMC925057 SV 164 407/370 2/9/2006
NMC925058 SV 165 407/371 2/9/2006
NMC925059 SV 166 407/372 2/9/2006
NMC925060 SV 167 407/373 2/9/2006
NMC925061 SV 168 407/374 2/9/2006
NMC925062 SV 169 407/375 2/9/2006
NMC925063 SV 170 407/376 2/9/2006
NMC925064 SV 171 407/377 2/9/2006
NMC925065 SV 172 407/378 2/9/2006
NMC925066 SV 173 407/379 2/9/2006
NMC925067 SV 174 407/380 2/9/2006
NMC925068 SV 175 407/381 2/9/2006
NMC925069 SV 176 407/382 2/9/2006
NMC925071 SV 178 407/384 2/9/2006
NMC925073 SV 180 407/386 2/9/2006
NMC925075 SV 182 407/388 2/9/2006
NMC925077 SV 184 407/390 2/9/2006
NMC925078 SV 185 407/391 2/11/2006

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Serial Num Claim Name Book / Page Number Location Date
NMC925079 SV 186 407/392 2/11/2006
NMC925080 SV 187 407/393 2/10/2006
NMC925081 SV 188 407/394 2/10/2006
NMC925082 SV 189 407/395 2/10/2006
NMC925083 SV 190 407/396 2/10/2006
NMC925084 SV 191 407/397 2/10/2006
NMC925085 SV 192 407/398 2/10/2006
NMC925086 SV 193 407/399 2/10/2006
NMC925087 SV 194 407/400 2/10/2006
NMC925088 SV 195 407/401 2/10/2006
NMC925089 SV 196 407/402 2/10/2006
NMC925090 SV 197 407/403 2/10/2006
NMC925091 SV 198 407/404 2/10/2006
NMC925092 SV 199 407/405 2/10/2006
NMC925093 SV 200 407/406 2/10/2006
NMC925094 SV 201 407/407 2/10/2006
NMC925095 SV 202 407/408 2/10/2006
NMC925096 SV 203 407/409 2/10/2006
NMC925097 SV 204 407/410 2/10/2006
NMC925098 SV 205 407/411 2/10/2006
NMC925099 SV 206 407/412 2/10/2006
NMC925100 SV 207 407/413 2/10/2006
NMC925101 SV 208 407/414 2/10/2006
NMC925102 SV 209 407/415 2/10/2006
NMC925103 SV 210 407/416 2/10/2006
NMC925104 SV 211 407/417 2/10/2006
NMC925105 SV 212 407/418 2/11/2006
NMC925106 SV 213 407/419 2/11/2006
NMC925108 SV 215 407/421 2/11/2006
NMC925109 SV 216 407/422 2/17/2006
NMC925110 SV 217 407/423 2/17/2006
NMC925111 SV 218 407/424 2/17/2006
NMC925112 SV 219 407/425 2/17/2006
NMC925113 SV 220 407/426 2/17/2006
NMC925114 SV 221 407/427 2/12/2006
NMC925115 SV 222 407/428 2/12/2006
NMC925116 SV 223 407/429 2/12/2006
NMC925117 SV 224 407/430 2/12/2006

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Serial Num Claim Name Book / Page Number Location Date
NMC925118 SV 225 407/431 2/12/2006
NMC925119 SV 226 407/432 2/12/2006
NMC925120 SV 227 407/433 2/12/2006
NMC925121 SV 228 407/434 2/12/2006
NMC925122 SV 229 407/435 2/12/2006
NMC925123 SV 230 407/436 2/12/2006
NMC925124 SV 231 407/437 2/12/2006
NMC925125 SV 232 407/438 2/12/2006
NMC925126 SV 233 407/439 2/12/2006
NMC925127 SV 234 407/440 2/12/2006
NMC925128 SV 235 407/441 2/12/2006
NMC925129 SV 236 407/442 2/12/2006
NMC925130 SV 237 407/443 2/12/2006
NMC925131 SV 238 407/444 2/12/2006
NMC925132 SV 239 407/445 2/12/2006
NMC925133 SV 240 407/446 2/12/2006
NMC925134 SV 241 407/447 2/12/2006
NMC925135 SV 242 407/448 2/12/2006
NMC925136 SV 243 407/449 2/12/2006
NMC925137 SV 244 407/450 2/12/2006
NMC925138 SV 245 407/451 2/13/2006
NMC925139 SV 246 407/452 2/13/2006
NMC925140 SV 247 407/453 2/13/2006
NMC925141 SV 248 407/454 2/13/2006
NMC925142 SV 249 407/455 2/13/2006
NMC925143 SV 250 407/456 2/13/2006
NMC925144 SV 251 407/457 2/13/2006
NMC925145 SV 252 407/458 2/13/2006
NMC925146 SV 253 407/459 2/12/2006
NMC925147 SV 254 407/460 2/12/2006
NMC925148 SV 255 407/461 2/12/2006
NMC925149 SV 256 407/462 2/17/2006
NMC925150 SV 257 407/463 2/17/2006
NMC925151 SV 258 407/464 2/17/2006
NMC925152 SV 259 407/465 2/17/2006
NMC925153 SV 260 407/466 2/17/2006
NMC925154 SV 261 407/467 2/17/2006
NMC925156 SV 277 407/469 2/14/2006

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Serial Num Claim Name Book / Page Number Location Date
NMC925157 SV 278 407/470 2/14/2006
NMC925158 SV 285 407/471 2/14/2006
NMC925159 SV 286 407/472 2/14/2006
NMC925160 SV 287 407/473 2/14/2006
NMC925161 SV 288 407/474 2/14/2006
NMC925162 SV 289 407/475 2/14/2006
NMC925163 SV 290 407/476 2/14/2006
NMC925164 SV 291 407/477 4/12/2006
NMC925165 SV 292 407/478 4/12/2006
NMC925166 SV 293 407/479 2/15/2006
NMC925167 SV 294 407/480 2/15/2006
NMC925168 SV 295 407/481 2/15/2006
NMC925169 SV 296 407/482 2/15/2006
NMC925170 SV 297 407/483 2/15/2006
NMC925171 SV 298 407/484 2/15/2006
NMC925172 SV 299 407/485 2/15/2006
NMC925173 SV 300 407/486 2/15/2006
NMC925174 SV 301 407/487 2/15/2006
NMC925175 SV 302 407/488 2/15/2006
NMC925176 SV 303 407/489 2/15/2006
NMC925177 SV 304 407/490 2/15/2006
NMC925178 SV 305 407/491 2/15/2006
NMC925179 SV 306 407/492 2/15/2006
NMC925180 SV 307 407/493 2/15/2006
NMC925181 SV 308 407/494 2/15/2006
NMC925182 SV 309 407/495 2/15/2006
NMC925183 SV 310 407/496 2/15/2006
NMC925184 SV 311 407/497 2/15/2006
NMC925185 SV 312 407/498 2/15/2006
NMC925186 SV 313 407/499 2/15/2006
NMC925187 SV 314 407/500 2/15/2006
NMC925188 SV 315 407/501 2/17/2006
NMC925189 SV 316 407/502 2/17/2006
NMC925190 SV 317 407/503 2/17/2006
NMC925191 SV 318 407/504 2/17/2006
NMC925192 SV 319 407/505 2/14/2006
NMC925193 SV 320 407/506 2/15/2006
NMC925194 SV 321 407/507 2/15/2006

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Serial Num Claim Name Book / Page Number Location Date
NMC925195 SV 322 407/508 2/15/2006
NMC925196 SV 323 407/509 4/6/2006
NMC925197 SV 324 407/510 2/15/2006
NMC925198 SV 325 407/511 2/15/2006
NMC925199 SV 326 407/512 2/15/2006
NMC925200 SV 327 407/513 2/15/2006
NMC925201 SV 328 407/514 2/15/2006
NMC925202 SV 329 407/514A 2/15/2006
NMC925203 SV 330 407/515 2/15/2006
NMC925204 SV 331 407/516 2/15/2006
NMC925205 SV 332 407/517 2/15/2006
NMC925206 SV 333 407/518 2/15/2006
NMC925207 SV 334 407/519 2/15/2006
NMC925208 SV 335 407/520 2/15/2006
NMC925209 SV 336 407/521 2/15/2006
NMC925210 SV 337 407/522 2/15/2006
NMC925211 SV 338 407/523 2/15/2006
NMC925212 SV 339 407/524 2/15/2006
NMC925213 SV 340 407/525 2/15/2006
NMC925214 SV 341 407/526 2/15/2006
NMC925215 SV 342 407/527 2/15/2006
NMC925216 SV 343 407/528 2/15/2006
NMC925217 SV 344 407/529 2/15/2006
NMC925218 SV 345 407/530 2/15/2006
NMC925219 SV 346 407/531 2/15/2006
NMC925220 SV 347 407/532 2/15/2006
NMC925221 SV 348 407/533 2/15/2006
NMC925222 SV 349 407/534 2/15/2006
NMC925223 SV 350 407/535 2/15/2006
NMC925224 SV 351 407/536 2/15/2006
NMC925225 SV 352 407/537 2/15/2006
NMC925226 SV 353 407/538 2/15/2006
NMC925227 SV 354 407/539 2/15/2006
NMC925228 SV 355 407/540 4/13/2006
NMC925229 SV 356 407/541 4/14/2006
NMC925230 SV 357 407/542 2/13/2006
NMC929379 SV 266 409/624 5/15/2006
NMC929380 SV 267 409/625 5/15/2006

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Serial Num Claim Name Book / Page Number Location Date
NMC929381 SV 268 409/626 4/14/2006
NMC929382 SV 269 409/627 4/14/2006
NMC929383 SV 270 409/628 4/14/2006
NMC929384 SV 271 409/629 4/14/2006
NMC929385 SV 272 409/630 4/14/2006
NMC929386 SV 273 409/631 4/14/2006
NMC929387 SV 274 409/632 4/14/2006
NMC929388 SV 275 409/633 4/14/2006
NMC929389 SV 276 409/634 4/14/2006
NMC929394 SV 283 409/639 4/12/2006
NMC929395 SV 284 409/640 4/12/2006
NMC930781 PS 1 410/362 4/20/2006
NMC930782 PS 2 410/363 4/20/2006
NMC930783 PS 3 410/364 4/20/2006
NMC930784 PS 4 410/365 4/20/2006
NMC930785 PS 5 410/366 4/20/2006
NMC930786 PS 6 410/367 4/20/2006
NMC930787 PS 7 410/368 4/20/2006
NMC930788 PS 8 410/369 4/20/2006
NMC930789 PS 9 410/370 4/20/2006
NMC930790 PS 10 410/371 4/20/2006
NMC930791 PS 11 410/372 4/20/2006
NMC930792 PS 12 410/373 4/20/2006
NMC930793 PS 13 410/374 4/20/2006
NMC930794 PS 14 410/375 4/20/2006
NMC930795 PS 15 410/376 4/20/2006
NMC930796 PS 16 410/377 4/20/2006
NMC930797 PS 17 410/378 4/20/2006
NMC930798 PS 18 410/379 4/20/2006
NMC930799 PS 19 410/380 4/20/2006
NMC930800 PS 20 410/381 4/20/2006
NMC930801 PS 21 410/382 4/20/2006
NMC930802 PS 22 410/383 4/20/2006
NMC930808 PS 28 410/389 4/20/2006
NMC930809 PS 29 410/390 4/20/2006
NMC930810 PS 30 410/391 4/20/2006
NMC930811 PS 31 410/392 4/20/2006
NMC930812 PS 32 410/393 4/20/2006

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Serial Num Claim Name Book / Page Number Location Date
NMC930814 PS 34 410/395 5/17/2006
NMC930815 PS 35 410/396 5/17/2006
NMC930816 PS 36 410/397 5/17/2006
NMC930817 PS 37 410/398 5/17/2006
NMC930818 PS 38 410/399 5/17/2006
NMC930819 PS 39 410/400 5/17/2006
NMC930820 PS 40 410/401 5/17/2006
NMC930823 PS 43 410/404 4/20/2006
NMC930824 PS 44 410/405 4/20/2006
NMC930825 PS 45 410/406 4/20/2006
NMC930826 PS 46 410/407 4/20/2006
NMC930827 PS 47 410/408 4/20/2006
NMC930828 PS 48 410/409 4/20/2006
NMC930838 PS 58 410/419 4/20/2006
NMC930839 PS 59 410/420 4/20/2006
NMC930840 PS 60 410/421 4/20/2006
NMC930841 PS 61 410/422 4/20/2006
NMC930842 PS 62 410/423 4/20/2006
NMC930843 PS 63 410/424 4/20/2006
NMC954162 Dry 1 423/200 3/26/2007
NMC954163 Dry 2 423/201 3/26/2007
NMC954164 Dry 3 423/202 3/26/2007
NMC954582 SSV 142 423/203 3/29/2007
NMC954583 SSV 143 423/204 3/29/2007
NMC954584 SSV 144 423/205 3/29/2007
NMC954585 SSV 370 423/206 3/29/2007
NMC954586 SSV 371 423/207 3/29/2007
NMC954587 SSV 372 423/208 3/29/2007
NMC954588 SSV 373 423/209 3/29/2007
NMC954589 SSV 374 423/210 3/29/2007
NMC954590 SSV 375 423/211 3/29/2007
NMC954591 SSV 376 423/212 3/29/2007
NMC954592 SSV 377 423/213 3/29/2007
NMC954593 SSV 378 423/214 3/29/2007
NMC954594 SSV 379 423/215 3/29/2007
NMC954595 SSV 380 423/216 3/29/2007
NMC954596 SSV 381 423/217 3/29/2007
NMC954597 SSV 382 423/218 3/29/2007

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Serial Num Claim Name Book / Page Number Location Date
NMC954598 SSV 383 423/219 3/29/2007
NMC954599 SSV 385 423/220 3/29/2007
NMC954600 SSV 386 423/221 3/29/2007
NMC954601 SSV 387 423/222 3/29/2007
NMC954602 SV 262 423/223 3/29/2007
NMC965332 Duffy #5 427/745 9/5/2007
NMC965333 Duffy #6 427/746 9/5/2007
NMC965334 Duffy #7 427/747 9/5/2007
NMC965335 Duffy #8 427/748 9/5/2007
NMC977866 SV 214 432/395 11/7/2007
NMC987526 SVR 1 435/587 3/26/2008
NMC987527 SVR 2 435/588 3/26/2008
NMC987528 SVR 3 435/589 3/26/2008
NMC987529 SVR 4 435/590 3/26/2008
NMC987530 SVR 5 435/591 3/26/2008
NMC987531 SVR 6 435/592 3/26/2008
NMC987532 SVR 7 435/593 3/26/2008
NMC987533 SVR 8 435/594 3/26/2008
NMC987534 SVR 9 435/595 3/26/2008
NMC987535 SVR 10 435/596 3/26/2008
NMC987536 SVR 11 435/597 3/26/2008
NMC987537 SVR 12 435/598 3/26/2008
NMC987538 SVR 13 435/599 3/26/2008
NMC987539 SVR 14 435/600 3/26/2008
NMC987540 SVR 15 435/601 3/26/2008
NMC987541 SVR 16 435/602 3/26/2008
NMC1011089 SVB 13 449/865 9/22/2009
NMC1023658 SVB 1 453/660 2/18/2010
NMC1023659 SVB 2 453/661 2/18/2010
NMC1023660 SVB 3 453/662 2/18/2010
NMC1023661 SVB 4 453/663 2/18/2010
NMC1023662 SVB 5 453/664 2/18/2010
NMC1023663 SVB 6 453/665 2/18/2010
NMC1023664 SVB 7 453/666 2/18/2010
NMC1023665 SVB 8 453/667 2/18/2010
NMC1023666 SVB 9 453/668 2/18/2010
NMC1023667 SVB 10 453/669 2/18/2010
NMC1023668 SVB 11 453/670 2/18/2010

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Serial Num Claim Name Book / Page Number Location Date
NMC1023669 SVB 12 453/671 2/18/2010
NMC1034792 SHO 60 461/284 11/11/2010
NMC1034793 SHO 61 461/285 11/11/2010
NMC1034794 SHO 62 461/286 11/12/2010
NMC1034795 SHO 63 461/287 11/12/2010
NMC1034796 SHO 64 461/288 11/12/2010
NMC1034797 SHO 65 461/289 11/12/2010
NMC1034798 SHO 4A 461/290 11/8/2010
NMC1034799 SHO 5A 461/291 10/1/2010
NMC1034800 HMS 4A 461/292 10/1/2010
NMC1062740 SVB 14 477/247 10/18/2011
NMC1062741 SVB 15 477/248 10/18/2011
NMC1062742 SVB 16 477/249 10/18/2011
NMC1062743 SVB 17 477/250 10/18/2011
NMC1096898 SVB 18 500/0753 9/13/2013
NMC1096899 SVB 19 500/0754 9/13/2013
NMC1096900 SVB 20 500/0755 9/29/2013
NMC1096901 SVB 21 500/0756 9/29/2013
NMC1096902 SVB 22 500/0757 9/14/2013
NMC1096903 SVB 23 500/0758 9/15/2013
NMC1096904 SVB 24 500/0759 9/15/2013
NMC1096905 SVB 25 500/0760 9/16/2013
NMC1096906 SVB 26 500/0761 9/16/2013
NMC1096907 SVB 27 500/0762 9/16/2013
NMC1096908 SVB 28 500/0763 9/17/2013
NMC1096909 SVB 29 500/0764 9/17/2013
NMC1096910 SVB 30 500/0765 9/17/2013
NMC1096911 SVB 31 500/0766 9/14/2013
NMC1096912 SVB 32 500/0767 9/28/2013
NMC1096913 SVB 33 500/0768 9/28/2013
NMC1096914 SVB 34 500/0769 9/18/2013
NMC1096915 SVB 35 500/0770 9/18/2013
NMC1096916 SVB 36 500/0771 9/29/2013
NMC1096917 SVB 37 500/0772 9/29/2013
NMC1096918 SVB 38 500/0753 9/30/2013
NMC1096919 SVB 39 500/0774 9/30/2013