Attached files

file filename
10-K - MDU RESOURCES 2016 FORM 10-K - MDU RESOURCES GROUP INCa2016form10-k.htm
EX-95 - MDU RESOURCES MINE SAFETY DISCLOSURES - MDU RESOURCES GROUP INCa2016ex95.htm
EX-32 - MDU RESOURCES CERTIFICATION OF CEO AND CFO - MDU RESOURCES GROUP INCa2016ex32.htm
EX-31.A - MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER - MDU RESOURCES GROUP INCa2016ex31a.htm
EX-23 - MDU RESOURCES CONSENT OF INDEPENDENT ACCOUNTING FIRM - MDU RESOURCES GROUP INCa2016ex23.htm
EX-21 - MDU RESOURCES SUBSIDIARIES OF MDU RESOURCES - MDU RESOURCES GROUP INCa2016ex21.htm
EX-12 - MDU RESOURCES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES - MDU RESOURCES GROUP INCa2016ex12.htm
EX-10.AS - MDU RESOURCES 401 K RETIREMENT PLAN AMENDMENT 12-29-2016 - MDU RESOURCES GROUP INCa2016ex10as.htm
EX-10.N - MDU RESOURCES SECTION 16 OFFICERS AND DIRECTORS - MDU RESOURCES GROUP INCa2016ex10n.htm


CERTIFICATION

I, Doran N. Schwartz, certify that:
1.
I have reviewed this annual report on Form 10-K of MDU Resources Group, Inc.;
2.
Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.
Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.
The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.
The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:  February 24, 2017


/s/ Doran N. Schwartz                                      
Doran N. Schwartz
Vice President and Chief Financial Officer