# Filing Detail

Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000067716-13-000125
Filing Date
2013-11-07
Accepted
2013-11-07 10:18:26
Documents
16
Period of Report
2013-09-30

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | MDU RESOURCES GROUP, INC. 3RD QUARTER 2013 FORM 10-Q | mdu-9302013x10q.htm | 10-Q | 1773912
2 | SECTION 16 OFFICERS AND DIRECTORS | mdu9302013q3ex10a.htm | EX-10.A | 32445
3 | AMENDMENT TO 401 K RETIREMENT PLAN | mdu-9302013q3ex10b.htm | EX-10.B | 18514
4 | AMENDMENT TO 401 K RETIREMENT PLAN | mdu-9302013q3ex10c.htm | EX-10.C | 32683
5 | AMENDMENT TO 401 K RETIREMENT PLAN | mdu-9302013q3ex10d.htm | EX-10.D | 10343
6 | COMPUTATION OF RATIO TO EARNINGS TO FIXED CHARGES | mdu-9302013q3ex12.htm | EX-12 | 40110
7 | CERTIFICATION OF CHIEF EXECUTIVE FINANCIAL OFFICER | mdu-9302013q3ex31a.htm | EX-31.A | 9874
8 | CERTIFICATION OF CHIEF FINANCIAL OFFICER | mdu-9302013q3ex31b.htm | EX-31.B | 9287
9 | CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER | mdu-9302013q3ex32.htm | EX-32 | 7084
10 | MINE SAFETY DISCLOSURES | mdu-9302013q3ex95.htm | EX-95 | 119453
| Complete submission text file | 0000067716-13-000125.txt |  | 11834468

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
11 | XBRL INSTANCE DOCUMENT | mdu-20130930.xml | EX-101.INS | 2150820
12 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | mdu-20130930.xsd | EX-101.SCH | 65221
13 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | mdu-20130930_cal.xml | EX-101.CAL | 99116
14 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | mdu-20130930_def.xml | EX-101.DEF | 316845
15 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | mdu-20130930_lab.xml | EX-101.LAB | 793609
16 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | mdu-20130930_pre.xml | EX-101.PRE | 408642

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.: 131198949
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)