# Filing Detail

Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000067716-15-000089
Filing Date
2015-08-04
Accepted
2015-08-04 10:56:59
Documents
15
Period of Report
2015-06-30

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | MDU RESOURCES JUNE 2015 FORM 10-Q | a2015q2form10-q.htm | 10-Q | 1856415
2 | MDU RESOURCES 401(K) AMENDMENT 6-30-2015 | a2015q2ex10a.htm | EX-10.A | 20989
3 | WAIVER AND VOLUNTARY RELEASE | a2015q2ex10b.htm | EX-10.B | 31475
4 | MDU RESOURCES SECTION 16 OFFICERS AND DIRECTORS | a2015q2ex10c.htm | EX-10.C | 33504
5 | COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES | a2015q2ex12.htm | EX-12 | 36587
6 | CERTIFICATION OF CHIEF EXECUTIVE OFFICER | a2015q2ex31a.htm | EX-31.A | 9790
7 | CERTIFICATION OF CHIEF FINANCIAL OFFICER | a2015q2ex31b.htm | EX-31.B | 9213
8 | CERTIFICATION CEO AND CFO EX 32 | a2015q2ex32.htm | EX-32 | 6426
9 | MINE SAFETY DISCLOSURES | a2015q2ex95.htm | EX-95 | 84081
| Complete submission text file | 0000067716-15-000089.txt |  | 10385315

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
10 | XBRL INSTANCE DOCUMENT | mdu-20150630.xml | EX-101.INS | 2614455
11 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | mdu-20150630.xsd | EX-101.SCH | 63422
12 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | mdu-20150630_cal.xml | EX-101.CAL | 122981
13 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | mdu-20150630_def.xml | EX-101.DEF | 365393
14 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | mdu-20150630_lab.xml | EX-101.LAB | 854124
15 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | mdu-20150630_pre.xml | EX-101.PRE | 458051

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.: 151024440
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)