# Filing Detail

Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000067716-18-000070
Filing Date
2018-11-02
Accepted
2018-11-02 09:20:22
Documents
101
Period of Report
2018-09-30

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | MDU RESOURCES FORM 10-Q 09-30-2018 | a2018q3form10-q.htm iXBRL | 10-Q | 2999347
2 | MDU RESOURCES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES | a2018q3ex12.htm | EX-12 | 36854
3 | MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER | a2018q3ex31a.htm | EX-31.A | 9819
4 | MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER | a2018q3ex31b.htm | EX-31.B | 9250
5 | MDU RESOURCES CERTIFICATION OF CEO AND CFO | a2018q3ex32.htm | EX-32 | 6477
6 | MDU RESOURCES MINE SAFETY DISCLOSURES | a2018q3ex95.htm | EX-95 | 83644
| Complete submission text file | 0000067716-18-000070.txt |  | 12817937

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
7 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | mdu-20180930.xsd | EX-101.SCH | 60582
8 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | mdu-20180930_cal.xml | EX-101.CAL | 112417
9 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | mdu-20180930_def.xml | EX-101.DEF | 472223
10 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | mdu-20180930_lab.xml | EX-101.LAB | 834445
11 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | mdu-20180930_pre.xml | EX-101.PRE | 551490
12 | EXTRACTED XBRL INSTANCE DOCUMENT | a2018q3form10-q_htm.xml | XML | 2901718

Mailing Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503
Business Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503 701-530-1059
MDU RESOURCES GROUP INC (Filer) CIK: 0000067716 (see all company filings)

EIN.: 410423660 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 001-03480 | Film No.: 181155643
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)