Attached files

file filename
EX-95 - MDU RESOURCES MINE SAFETY DISCLOSURES - MDU RESOURCES GROUP INCa2021q2ex95.htm
EX-32 - MDU RESOURCES CERTIFICATION OF CEO AND CFO - MDU RESOURCES GROUP INCa2021q2ex32.htm
EX-31.B - MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER - MDU RESOURCES GROUP INCa2021q2ex31b.htm
EX-31.A - MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER - MDU RESOURCES GROUP INCa2021q2ex31a.htm
EX-10.B - MDU RESOURCES DIRECTOR COMPENSATION POLICY 5-12-21 - MDU RESOURCES GROUP INCa2021ex10b.htm
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