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Filing Detail
Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000067716-22-000062
Filing Date
2022-11-03
Accepted
2022-11-03 08:10:29
Documents
101
Period of Report
2022-09-30

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES FORM 10-Q 09-30-2022 mdu-20220930.htm   iXBRL 10-Q 3677452
2 MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER a2022q3ex31a.htm EX-31.A 9316
3 MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER a2022q3ex31b.htm EX-31.B 8929
4 MDU RESOURCES CERTIFICATION OF CEO AND CFO a2022q3ex32.htm EX-32 5454
5 MDU RESOURCES MINE SAFETY DISCLOSURES a2022q3ex95.htm EX-95 119567
6 MDU RESOURCES 401 K RETIREMENT PLAN AMENDMENT 8-17-2022 a2022ex10a.htm EX-10.A 5842
  Complete submission text file 0000067716-22-000062.txt   14264450

Data Files

Seq Description Document Type Size
7 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20220930.xsd EX-101.SCH 54917
8 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20220930_cal.xml EX-101.CAL 82092
9 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20220930_def.xml EX-101.DEF 402945
10 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20220930_lab.xml EX-101.LAB 755544
11 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20220930_pre.xml EX-101.PRE 508195
95 EXTRACTED XBRL INSTANCE DOCUMENT mdu-20220930_htm.xml XML 3406430
Mailing Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503
Business Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503 701-530-1000
MDU RESOURCES GROUP INC (Filer) CIK: 0000067716 (see all company filings)

IRS No.: 301133956 | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 001-03480 | Film No.: 221356359
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)