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

                                  Years Ended December 31,
                          2001      2000      1999      1998      1997
                                     (In thousands of dollars)
  Earnings Available for
   Fixed Charges:

  Net Income per
   Consolidated
   Statements of
   Income             $155,849  $111,028  $ 84,080  $ 34,107  $ 54,617

  Income Taxes          98,341    69,650    49,310    17,485    30,743
                       254,190   180,678   133,390    51,592    85,360

  Rents (a)              6,561     3,952     2,018     1,749     1,249

  Interest (b)          51,201    51,801    36,539    31,587    33,047

  Total Earnings
   Available for
   Fixed Charges      $311,952  $236,431  $171,947  $ 84,928  $119,656

  Preferred Dividend
   Requirements       $    762  $    766  $    772  $    777  $    782

  Ratio of Income
   Before Income
   Taxes to Net
   Income                 163%      163%      159%      151%      156%

  Preferred Dividend
   Factor on Pretax
   Basis                 1,242     1,249     1,227     1,173     1,220

  Fixed Charges (c)     57,762    55,753    38,557    33,336    34,296

  Combined Fixed
   Charges and
   Preferred Stock
   Dividends          $ 59,004  $ 57,002  $ 39,784  $ 34,509  $ 35,516

  Ratio of Earnings
   to Fixed Charges       5.4x      4.2x      4.5x      2.5x      3.5x

  Ratio of Earnings
    to Combined
    Fixed Charges
    and Preferred
   Stock Dividends        5.3x      4.1x      4.3x      2.5x      3.4x

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

(b)  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.

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