MDU RESOURCES GROUP, INC.
       COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
    AND COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS


                              Twelve Months          Year
                                  Ended             Ended
                              June 30, 2003   December 31, 2002
                                  (In thousands of dollars)

Earnings Available for
  Fixed Charges:

Net Income per Consolidated
  Statements of Income           $163,450          $148,444

Income Taxes (a)                   89,111            86,230
                                  252,561           234,674

Rents (b)                           8,150             8,156

Interest (c)                       55,227            51,393

Total Earnings Available
  for Fixed Charges              $315,938          $294,223

Preferred Dividend Requirements  $    753          $    756

Ratio of Income Before Income
  Taxes to Net Income                155%              158%

Preferred Dividend Factor on
  Pretax Basis                      1,167             1,194

Fixed Charges (d)                  63,377            59,549

Combined Fixed Charges and
  Preferred Stock Dividends      $ 64,544          $ 60,743

Ratio of Earnings to Fixed
  Charges                            5.0x              4.9x

Ratio of Earnings to
  Combined Fixed Charges
  and Preferred Stock Dividends      4.9x              4.8x

(a)  Includes income tax benefits of $4,821 associated with the
     cumulative effect of accounting change for the twelve months ended
     June 30, 2003.

(b)  Represents portion (33 1/3%) of rents which is estimated to
     approximately constitute the return to the lessors on their
     investment in leased premises.

(c)  Represents interest and amortization of debt discount and
     expense on all indebtedness and excludes amortization of gains
     or losses on reacquired debt which, under the Uniform System of
     Accounts, is classified as a reduction of, or increase in,
     interest expense in the Consolidated Statements of Income.

(d)  Represents rents and interest, both as defined above.