MDU RESOURCES GROUP INC - FORM 10-K - EX-23 - MDU RESOURCES CONSENT OF INDEPENDENT ACCOUNTING FIRM - February 23, 2018

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10-K - MDU RESOURCES 2017 FORM 10-K - MDU RESOURCES GROUP INCa2017form10-k.htm
EX-95 - MDU RESOURCES MINE SAFETY DISCLOSURES - MDU RESOURCES GROUP INCa2017ex95.htm
EX-32 - MDU RESOURCES CERTIFICATION OF CEO AND CFO - MDU RESOURCES GROUP INCa2017ex32.htm
EX-31.B - MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER - MDU RESOURCES GROUP INCa2017ex31b.htm
EX-31.A - MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER - MDU RESOURCES GROUP INCa2017ex31a.htm
EX-21 - MDU RESOURCES SUBSIDIARIES OF MDU RESOURCES - MDU RESOURCES GROUP INCa2017ex21.htm
EX-12 - MDU RESOURCES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES - MDU RESOURCES GROUP INCa2017ex12.htm
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in Registration Statement No. 333-220026 on Form S-3, and No. 333-27877, No. 333-114488, and No. 333-212635 on Form S-8, of our reports dated February 23, 2018, relating to the consolidated financial statements and financial statement schedules of MDU Resources Group, Inc. and subsidiaries (the “Company”), and the effectiveness of the Company's internal control over financial reporting, appearing in this Annual Report on Form 10-K of the Company for the year ended December 31, 2017.


/s/ Deloitte & Touche LLP

Minneapolis, Minnesota
February 23, 2018





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