# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000067716-18-000013
Filing Date
2018-02-23
Accepted
2018-02-23 09:35:31
Documents
152
Period of Report
2017-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | MDU RESOURCES 2017 FORM 10-K | a2017form10-k.htm iXBRL | 10-K | 5683324
2 | MDU RESOURCES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES | a2017ex12.htm | EX-12 | 69793
3 | MDU RESOURCES SUBSIDIARIES OF MDU RESOURCES | a2017ex21.htm | EX-21 | 65061
4 | MDU RESOURCES CONSENT OF INDEPENDENT ACCOUNTING FIRM | a2017ex23.htm | EX-23 | 2868
5 | MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER | a2017ex31a.htm | EX-31.A | 10447
6 | MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER | a2017ex31b.htm | EX-31.B | 10437
7 | MDU RESOURCES CERTIFICATION OF CEO AND CFO | a2017ex32.htm | EX-32 | 6943
8 | MDU RESOURCES MINE SAFETY DISCLOSURES | a2017ex95.htm | EX-95 | 208996
| Complete submission text file | 0000067716-18-000013.txt |  | 24470829

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
9 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | mdu-20171231.xsd | EX-101.SCH | 110173
10 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | mdu-20171231_cal.xml | EX-101.CAL | 183386
11 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | mdu-20171231_def.xml | EX-101.DEF | 952950
12 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | mdu-20171231_lab.xml | EX-101.LAB | 1594434
13 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | mdu-20171231_pre.xml | EX-101.PRE | 1145094
14 | EXTRACTED XBRL INSTANCE DOCUMENT | a2017form10-k_htm.xml | XML | 5319284

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-K | Act: 34 | File No.: 001-03480 | Film No.: 18634856
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)