# Filing Detail

Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000067716-13-000101
Filing Date
2013-08-07
Accepted
2013-08-07 12:15:26
Documents
14
Period of Report
2013-06-30

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-Q | mduform10-q.htm | 10-Q | 1721680
2 | DIRECTOR COMPENSATION POLICY AMENDED 5/16/13 | exhibit10a.htm | EX-10.A | 38252
3 | SECTION 16 OFFICERS & DIRECTORS - INDEMNIFICATION AGREEMENTS CHART 6/30/13 | exhibit10b.htm | EX-10.B | 32533
4 | COMPUTATION OF RATIO OF EARNINGS | exhibit12.htm | EX-12 | 40014
5 | CERTIFICATION OF CEO - SEC 302 SOX ACT 2002 | exhibit31a.htm | EX-31.A | 10450
6 | CERTIFICATION OF CFO - SEC 302 SOX ACT 2002 | exhibit31b.htm | EX-31.B | 9598
7 | CERTIFICATION OF CEO AND CFO - 18 USC SEC 1350 - SEC 906 SOX ACT 2002 | exhibit32.htm | EX-32 | 7075
8 | MINE SAFETY DISCLOSURES | exhibit95.htm | EX-95 | 118947
| Complete submission text file | 0000067716-13-000101.txt |  | 15696014

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
9 | XBRL INSTANCE DOCUMENT | mdu-20130630.xml | EX-101.INS | 2094112
10 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | mdu-20130630.xsd | EX-101.SCH | 63712
11 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | mdu-20130630_cal.xml | EX-101.CAL | 94176
12 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | mdu-20130630_def.xml | EX-101.DEF | 317367
13 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | mdu-20130630_lab.xml | EX-101.LAB | 764113
14 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | mdu-20130630_pre.xml | EX-101.PRE | 405238

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.: 131016524
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)