Exhibit 23(c)

          

                                 CONSENT OF ENGINEER

               We hereby consent to the incorporation by reference in this
          Post-Effective Amendment No. 2 to the registration statement on
          Form S-8 filed by MDU Resources Group, Inc. with the Securities
          and Exchange Commission (Registration No. 333-06103) of the
          reference to our report, dated May 9, 1994, which appears in the
          MDU Resources Group, Inc. Annual Report on Form 10-K for the year
          ended December 31, 1997.

                                     WEIR INTERNATIONAL MINING CONSULTANTS
                                     
                                     /s/ Dennis N. Kostic
                                      
                                      
         

          February 18, 1999
          Des Plaines, Illinois