Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0000898080-10-000014
Filing Date
2010-04-08
Accepted
2010-04-08 17:27:09
Documents
1
Effectiveness Date
2010-04-08

Document Format Files

Seq Description Document Type Size
1 DEFA14A sched14a.htm DEFA14A 24783
  Complete submission text file 0000898080-10-000014.txt   26315
Mailing Address 1200 WEST CENTURY AVENUE BISMARCK ND 58506-5650
Business Address 1200 WEST CENTURY AVENUE BISMARCK ND 58506-5650 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: DEFA14A | Act: 34 | File No.: 001-03480 | Film No.: 10740425
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)