Form 8-K - Current report:
SEC Accession No. 0000067716-22-000003
Filing Date
2022-01-10
Accepted
2022-01-10 17:14:31
Documents
13
Period of Report
2022-01-06
Items
Item 1.04: Mine Safety - Reporting of Shutdowns and Patterns of Violations
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 8-K mdu-20220106.htm   iXBRL 8-K 32314
  Complete submission text file 0000067716-22-000003.txt   199158

Data Files

Seq Description Document Type Size
2 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20220106.xsd EX-101.SCH 2143
3 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20220106_def.xml EX-101.DEF 14874
4 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20220106_lab.xml EX-101.LAB 28663
5 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20220106_pre.xml EX-101.PRE 15494
7 EXTRACTED XBRL INSTANCE DOCUMENT mdu-20220106_htm.xml XML 11317
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)

EIN.: 301133956 | Fiscal Year End: 1231
Type: 8-K | Act: 34 | File No.: 001-03480 | Film No.: 22521997
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)