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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)

IRS No.: 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)