MDU Resources Group, Inc.
Street Address:1200 West Century Avenue
Mailing Address: P.O. Box 5650
Bismarck, ND 58506-5650

Contact by telephone:
     (701) 530-1000

Contact by E-mail:
     For general information: webmaster@mduresources.com
     For investor relations information: investor@mduresources.com
     For media inquiries: media@mduresources.com