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Filing Detail
Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000067716-07-000097
Filing Date
2007-05-08
Accepted
2007-05-08 14:44:49
Documents
12
Period of Report
2007-03-31

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES 1ST QUARTER 10-Q mdu1stqtr10q.htm 10-Q 1428338
2 CERTIFICATE OF AMENDMENT TO CI certofamend.htm EX-3 28289
3 PURCHASE AND SALAE AGREEMENT BY CENTENNIAL psa.htm EX-10.A 543521
4 MDU RESOURCES' EICP PLAN & RULES AND REGULATIONS mdureicp.htm EX-10.B 92855
5 MONTANA-DAKOTA EICP PLAN & RULES AND REGULATIONS mon-dakeicp.htm EX-10.C 92826
6 WBI HOLDINGS EICP PLAN AND RULES & REGULATIONS wbieicp.htm EX-10.D 92537
7 KNIFE RIVER EICP PLAN AND RULES & REGULATIONS kreicp.htm EX-10.E 94900
8 MDU CONSTRUCTION SERVICES EICP PLAN AND RULES & REGULATIONS cgseicp.htm EX-10.F 72669
9 COMPUTATION OF RATIO OF EARNINGS compratio.htm EX-12 62710
10 CERTIFICATION OF CEO-SECTION 302 certceo.htm EX-31.A 12967
11 CERTIFICATION OF CFO-SECTION 302 certcfo.htm EX-31.B 13452
12 CERTIFICATION OF CEO & CFO-SECTION 906 certceocfo.htm EX-32 9034
  Complete submission text file 0000067716-07-000097.txt   2545633
Mailing Address 1200 WEST CENTURY AVENUE BISMARCK ND 58506-5650
Business Address 1200 WEST CENTURY AVENUE BISMARCK ND 58506-5650 701-530-1013
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.: 07827689
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)