Houston, TX - January 20, 2011 - Mainland Resources, Inc. (the "Company" or "Mainland") (OTCQB: MNLU, Frankfurt: 5MN) (www.mainlandresources.com) has entered into a Marketing Services Agreement (MSA) with SEI Energy, LLC (SEI) to provide gas marketing options.

In accordance with the terms of the MSA, the parties have agreed to enter into a form of Natural Gas Purchase Agreement (GPA) prior to the Company initiating production, and which GPA will contain certain already agreed upon provisions and inclusive of, without limitation, SEI's obligation to deliver optimal gas price value for the Company.

Company CEO Nick Atencio states, "As we enter into the analysis and testing phase for the Burkley-Phillips #1 well, it is important to have a more detailed understanding of the gas marketing, treatment and transportation environment in our operating area. This agreement allows us the flexibility to investigate the key factors related to monetizing gas in this area and also provides Mainland the ability to maximize revenues by maintaining the most competitive marketing terms available in our area. We look forward to working with SEI and their experienced marketing and transport staff."

Mainland Resources, Inc. is engaged in the exploration of oil and gas resources. The Company's current initiatives are focused on the acquisition and development of acreage in emerging and early developing oil and gas regions with the potential for material discoveries.

Symbol:            MNLU - OTCQB, Symbol: 5MN; Frankfurt, WKN No.: A0ND6N

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SAFE HARBOR STATEMENT THIS NEWS RELEASE CONTAINS "FORWARD-LOOKING STATEMENTS", AS THAT TERM IS DEFINED IN SECTION 27A OF THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED, AND SECTION 21E OF THE UNITED STATES SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. STATEMENTS IN THIS NEWS RELEASE, WHICH ARE NOT PURELY HISTORICAL, ARE FORWARD-LOOKING STATEMENTS AND INCLUDE ANY STATEMENTS REGARDING BELIEFS, PLANS, EXPECTATIONS OR INTENTIONS REGARDING THE FUTURE.

FORWARD-LOOKING STATEMENTS ARE SUBJECT TO CERTAIN RISKS AND UNCERTAINTIES THAT COULD CAUSE ACTUAL RESULTS TO DIFFER MATERIALLY FROM ANY FUTURE RESULTS, PERFORMANCE OR ACHIEVEMENTS EXPRESSED OR IMPLIED BY SUCH STATEMENTS. STATEMENTS THAT ARE NOT HISTORICAL FACTS, INCLUDING STATEMENTS THAT ARE PRECEDED BY, FOLLOWED BY, OR THAT INCLUDE SUCH WORDS AS "ESTIMATE," "ANTICIPATE," "BELIEVE," "PLAN" OR "EXPECT" OR SIMILAR STATEMENTS ARE FORWARD-LOOKING STATEMENTS. RISKS AND UNCERTAINTIES FOR THE COMPANY INCLUDE, BUT ARE NOT LIMITED TO, THE RISKS ASSOCIATED WITH OIL AND GAS PROPERTY EXPLORATION AND FUNDING AS WELL AS THE RISKS SHOWN IN THE COMPANY'S MOST RECENT ANNUAL REPORT ON FORM 10-K AND ITS QUARTERLY REPORTS ON FORM 10-Q, AND FROM TIME-TO-TIME IN OTHER PUBLICLY AVAILABLE INFORMATION REGARDING THE COMPANY. OTHER RISKS INCLUDE RISKS ASSOCIATED WITH THE REGULATORY APPROVAL PROCESS, COMPETITIVE COMPANIES, FUTURE CAPITAL REQUIREMENTS AND THE COMPANY'S ABILITY AND LEVEL OF SUPPORT FOR ITS EXPLORATION ACTIVITIES. THERE CAN BE NO ASSURANCE THAT THE COMPANY'S EXPLORATION EFFORTS WILL SUCCEED AND THE COMPANY WILL ULTIMATELY ACHIEVE COMMERCIAL SUCCESS. THESE FORWARD-LOOKING STATEMENTS ARE MADE AS OF THE DATE OF THIS NEWS RELEASE, AND THE COMPANY ASSUMES NO OBLIGATION TO UPDATE THE FORWARD-LOOKING STATEMENTS, OR TO UPDATE THE REASONS WHY ACTUAL RESULTS COULD DIFFER FROM THOSE PROJECTED IN THE FORWARD-LOOKING STATEMENTS. ALTHOUGH THE COMPANY BELIEVES THAT THE BELIEFS, PLANS, EXPECTATIONS AND INTENTIONS CONTAINED IN THIS NEWS RELEASE ARE REASONABLE, THERE CAN BE NO ASSURANCE THOSE BELIEFS, PLANS, EXPECTATIONS OR INTENTIONS WILL PROVE TO BE ACCURATE. INVESTORS SHOULD CONSIDER ALL OF THE INFORMATION SET FORTH HEREIN AND SHOULD ALSO REFER TO THE RISK FACTORS DISCLOSED IN THE COMPANY'S PERIODIC REPORTS FILED FROM TIME-TO-TIME WITH THE UNITED STATES SECURITIES AND EXCHANGE COMMISSION.

THE COMPANY AND AMERICAN EXPLORATION CORPORATION INTEND TO FILE CERTAIN MATERIALS WITH THE UNITED STATES SECURITIES AND EXCHANGE COMMISSION IN CONNECTION WITH THE PROPOSED MERGER TRANSACTION BETWEEN THE PARTIES ANNOUNCED ON MARCH 23, 2010, INCLUDING THE FILING BY THE COMPANY WITH THE SEC OF A REGISTRATION STATEMENT ON FORM S-4, WHICH WILL INCLUDE A PRELIMINARY PROSPECTUS AND RELATED MATERIALS TO REGISTER THE SECURITIES OF THE COMPANY TO BE ISSUED IN EXCHANGE FOR SECURITIES OF AMERICAN EXPLORATION. THE REGISTRATION STATEMENT WILL INCORPORATE A JOINT PROXY STATEMENT/ PROSPECTUS THAT THE COMPANY AND AMERICAN EXPLORATION PLAN TO FILE WITH THE SEC AND MAIL TO THEIR RESPECTIVE STOCKHOLDERS IN CONNECTION WITH OBTAINING STOCKHOLDER APPROVAL OF THE PROPOSED MERGER. THE REGISTRATION STATEMENT AND THE PROXY STATEMENT/PROSPECTUS WILL CONTAIN IMPORTANT INFORMATION ABOUT THE COMPANY, AMERICAN EXPLORATION, THE MERGER AND RELATED MATTERS. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE REGISTRATION STATEMENT AND THE PROXY STATEMENT/PROSPECTUS CAREFULLY WHEN THEY ARE AVAILABLE. INVESTORS AND SECURITY HOLDERS WILL BE ABLE TO OBTAIN FREE COPIES OF THE REGISTRATION STATEMENT AND THE PROXY STATEMENT/PROSPECTUS WHEN THEY BECOME AVAILABLE, AND OTHER DOCUMENTS FILED WITH THE SEC BY THE COMPANY AND AMERICAN EXPLORATION, THROUGH THE WEB SITE MAINTAINED BY THE SEC AT WWW.SEC.GOV. THE COMPANY'S SECURITY HOLDERS WILL ALSO RECEIVE INFORMATION AT AN APPROPRIATE TIME ON HOW TO OBTAIN THESE DOCUMENTS FREE OF CHARGE FROM THE COMPANY. IN ANY EVENT, DOCUMENTS FILED BY THE COMPANY WITH THE SEC MAY BE OBTAINED FREE OF CHARGE BY CONTACTING THE COMPANY AT: MAINLAND RESOURCES, INC.; ATTENTION: MR. WILLIAM THOMAS, CFO; 21 WATERWAY AVENUE, SUITE 300, THE WOODLANDS, TEXAS 77380; FACSIMILE: (713) 583-1162.