SEC Seal
SEC Banner
Search the Next-Generation EDGAR System
Filing Detail
Form 8-K - Current report:
SEC Accession No. 0000067716-19-000067
Filing Date
2019-10-04
Accepted
2019-10-04 17:27:59
Documents
14
Period of Report
2019-10-01
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 a2019octoberform8-k.htm   iXBRL 8-K 43239
  Complete submission text file 0000067716-19-000067.txt   213409

Data Files

Seq Description Document Type Size
2 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20191001.xsd EX-101.SCH 4562
3 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20191001_cal.xml EX-101.CAL 609
4 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20191001_def.xml EX-101.DEF 14527
5 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20191001_lab.xml EX-101.LAB 31381
6 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20191001_pre.xml EX-101.PRE 16430
15 EXTRACTED XBRL INSTANCE DOCUMENT a2019octoberform8-k_htm.xml XML 4371
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: 8-K | Act: 34 | File No.: 001-03480 | Film No.: 191139268
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)