MDU RESOURCES GROUP INC
S-3, 1998-03-25
GAS & OTHER SERVICES COMBINED
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      AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH 25, 1998
                                               REGISTRATION NO. 333-       
      ======================================================================
                          SECURITIES AND EXCHANGE COMMISSION
                                WASHINGTON, D.C. 20549

                                   ---------------
                                       FORM S-3
               REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                                   ---------------
                              MDU RESOURCES GROUP, INC.
                (Exact name of registrant as specified in its charter)

                        DELAWARE                        41-0423660
              (State or other jurisdiction           (I.R.S. Employer
            of incorporation or organization)      Identification No.)

                                  Schuchart Building
                                918 East Divide Avenue
                                    P.O. Box 5650
                          Bismarck, North Dakota 58506-5650
                                    (701) 222-7900
            (Address, including zip code, and telephone number, including 
               area code, of registrant's principal executive offices)


           HAROLD J. MELLEN, JR.   WARREN L. ROBINSON    RICHARD M. FARMER
            President and Chief      Vice President,     Reid & Priest LLP
             Executive Officer          Treasurer          40 West 57th
           MDU Resources Group,    and Chief Financial        Street
                   Inc.                  Officer           New York, New
            Schuchart Building    MDU Resources Group,      York 10019
              918 East Divide             Inc.            (212) 603-2000
                  Avenue           Schuchart Building
               P.O. Box 5650         918 East Divide
              Bismarck, North            Avenue
            Dakota  58506-5650        P.O. Box 5650
              (701) 222-7900         Bismarck, North
                                   Dakota  58506-5650
                                     (701) 222-7900

            (Names, addresses, including zip codes, and telephone numbers,
                     including area codes, of agents for service)

                                   With a copy to:

                                 DOUGLAS E. DAVIDSON
                           Berlack, Israels & Liberman LLP
                                 120 West 45th Street
                               New York, New York 10036
                                    (212) 704-0100

             APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO PUBLIC: 
          From time to time after the effective date of this Registration
          Statement, as determined by market conditions and other factors.

             If the only securities being registered on this Form are being
          offered pursuant to dividend or interest reinvestment plans,
          please check the following box [ ].

             If any of the securities being registered on this Form are to
          be offered on a delayed or continuous basis pursuant to Rule 415
          under the Securities Act of 1933, other than securities offered
          only in connection with dividend or interest reinvestment plans,
          check the following box [X].

             If this Form is filed to register additional securities for an
          offering pursuant to Rule 462(b) under the Securities Act, please
          check the following box and list the Securities Act registration
          statement number of the earlier effective registration statement
          for the same offering [ ].

             If this Form is a post-effective amendment filed pursuant to
          Rule 462(c) under the Securities Act, check the following box and
          list the Securities Act registration statement number of the
          earlier effective registration statement for the same offering
          [ ].

             If delivery of the prospectus is expected to be made pursuant
          to Rule 434, please check the following box [ ].

                                   ---------------
                           CALCULATION OF REGISTRATION FEE
     ==========================================================================
        TITLE OF
       EACH CLASS
           OF                        PROPOSED         PROPOSED
       SECURITIES     AMOUNT TO       MAXIMUM          MAXIMUM      AMOUNT OF
          TO BE          BE       OFFERING PRICE      AGGREGATE    REGISTRATION
       REGISTERED    REGISTERED      PER UNIT      OFFERING PRICE      FEE
     --------------------------------------------------------------------------
      Common
      Stock, $3.33    3,400,000
      par value        shares      $35.4375(1)    $120,487,500(1)   $35,543.82
     --------------------------------------------------------------------------
      Preference
      Share
      Purchase        3,400,000
      Rights           rights           --               --           -- (2)
     ==========================================================================
          (1)  Estimated pursuant to Rule 457(c) under the Securities Act
               of 1933, as amended, solely for the purpose of calculating
               the registration fee based on the average of the high and
               the low prices of the Company's Common Stock as reported on
               the New York Stock Exchange composite tape on March 18,
               1998.
          (2)  Since no separate consideration is paid for the Preference
               Share Purchase Rights, the registration fee for such
               securities is included in the fee for the Common Stock.  The
               value attributable to the Preference Share Purchase Rights,
               if any, is reflected in the market price of the Common
               Stock.

             THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON
          SUCH DATE OR DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE
          DATE UNTIL THE REGISTRANT SHALL FILE A FURTHER AMENDMENT WHICH
          SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT SHALL
          THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
          THE SECURITIES ACT OF 1933, OR UNTIL THE REGISTRATION STATEMENT
          SHALL BECOME EFFECTIVE ON SUCH DATE AS THE SECURITIES AND
          EXCHANGE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A), MAY
          DETERMINE.


     <PAGE>


          Information contained herein is subject to completion or
          amendment.  A registration statement relating to these securities
          has been filed with the Securities and Exchange Commission. 
          These securities may not be sold nor may offers to buy be
          accepted prior to the time the registration statement becomes
          effective.  This Prospectus shall not constitute an offer to sell
          or the solicitation of any offer to buy nor shall there be any
          sale of these securities in any jurisdiction in which such offer,
          solicitation or sale would be unlawful prior to registration or
          qualification under the securities laws of any such jurisdiction.


                     SUBJECT TO COMPLETION, DATED March 25, 1998

          PROSPECTUS
          ----------

                                   3,400,000 SHARES
                              MDU RESOURCES GROUP, INC.
                                     COMMON STOCK
                              PAR VALUE, $3.33 PER SHARE


                                   ----------------

             This Prospectus relates to the offering, from time to time, of
          up to 3,400,000 shares of MDU Resources Group, Inc. (the
          "Company") Common Stock, par value $3.33 per share (the "Common
          Stock") and the appurtenant Preference Share Purchase Rights (the
          "Rights", and together with the 3,400,000 shares of Common Stock,
          the "Offered Shares") on terms to be determined at the time of
          sale, of which 2,169,068 Offered Shares are being offered for sale 
          by the Company and 1,230,932 Offered Shares are being offered 
          for sale by certain shareholders of the Company (the "Selling 
          Shareholders").  This Prospectus will be supplemented by one or 
          more Prospectus Supplements ("Prospectus Supplement") which will 
          reflect any agreement entered into by the Company and, to the 
          extent applicable, the Selling Shareholders for the sale of the 
          Offered Shares and will set forth the number of Offered Shares, 
          proceeds to the Company and the Selling Shareholders, initial 
          offering price, and other specific terms of the applicable offering 
          of the Offered Shares in respect of which this Prospectus is being
          delivered.  The Company will not receive any of the proceeds from
          the sale of Offered Shares by the Selling Shareholders.  See
          "Selling Shareholders."  The Company will pay all expenses in
          connection with the registration and offering of the Offered
          Shares under the Securities Act of 1933, as amended (the
          "Securities Act"), other than the following expenses of the
          Selling Shareholders, which will be paid by the Selling
          Shareholders:  (i) underwriting discounts and commissions with
          respect to the Offered Shares offered for sale by the Selling
          Shareholders, (ii) placement agency fees or financial advisor
          fees with respect to such Offered Shares and (iii) the fees and
          expenses of their counsel.

             The Company's outstanding shares of Common Stock and the
          appurtenant Rights (including the Offered Shares offered for sale
          by the Selling Shareholders) are, and the Offered Shares offered
          for sale by the Company are expected to be, listed on the New York 
          Stock Exchange (the "NYSE") and the Pacific Exchange under the 
          symbol MDU.

                                   ----------------

            THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
                   SECURITIES AND EXCHANGE COMMISSION OR ANY STATE
                     SECURITIES COMMISSION NOR HAS THE SECURITIES
                         AND EXCHANGE COMMISSION OR ANY STATE
                          SECURITIES COMMISSION PASSED UPON
                           THE ACCURACY OR ADEQUACY OF THIS
                            PROSPECTUS. ANY REPRESENTATION
                                 TO THE CONTRARY IS A
                                  CRIMINAL OFFENSE.


             The Offered Shares may be sold directly by the Company or the
          Selling Shareholders, through agents designated from time to time
          or through underwriters.  If an agent of the Company or the
          Selling Shareholders or any underwriter is involved in the sale
          of any Offered Shares in respect of which this Prospectus is
          being delivered, the names of such agents or underwriters, any
          applicable discounts, commissions or allowances and a description
          of any indemnification arrangements will be set forth in a
          Prospectus Supplement.  See "Plan of Distribution."



                                   ----------------

              The date of this Prospectus is                     , 1998.


      <PAGE>


                                AVAILABLE INFORMATION

             The Company is subject to the informational requirements of
          the Securities Exchange Act of 1934, as amended (the "Exchange
          Act"), and in accordance therewith files reports, proxy and
          information statements, and other information with the Securities
          and Exchange Commission (the "SEC").  Reports, proxy and
          information statements, and other information filed by the
          Company can be inspected and copied at the public reference
          facilities maintained by the SEC at 450 Fifth Street, N.W.,
          Washington, D.C. 20549, and at the SEC's regional offices at
          Seven World Trade Center, Suite 1300, New York, New York, 10048,
          and at 500 West Madison Street, Suite 1400, Chicago, Illinois
          60661.  Copies of such material can also be obtained from the
          Public Reference Section of the SEC at 450 Fifth Street, N.W.,
          Washington, D.C. 20549, at prescribed rates.  The SEC maintains a
          Web site (http://www.sec.gov) that contains reports, proxy and
          information statements, and other information filed
          electronically by the Company.  The Company's outstanding Common
          Stock and the appurtenant Rights are listed for trading on the
          NYSE and on the Pacific Exchange.  Reports, proxy and information
          statements, and other information concerning the Company can also
          be inspected at the offices of the NYSE and the Pacific Exchange.

             The Company has filed a Registration Statement on Form S-3
          (herein, together with all exhibits and amendments thereto,
          called the "Registration Statement") with the SEC under the
          Securities Act with respect to the Offered Shares.  This
          Prospectus does not contain all the information set forth in the
          Registration Statement, certain parts of which are omitted in
          accordance with the rules and regulations of the SEC.  For
          further information, reference is made to the Registration
          Statement.  Statements contained herein concerning any document
          filed as an exhibit to the Registration Statement are not
          necessarily complete and, in each instance, reference is made to
          the copy of such document filed as an exhibit to the Registration
          Statement.  Each such statement is qualified in its entirety by
          such reference.

                   INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

             The following documents heretofore filed by the Company with
          the SEC are hereby incorporated by reference in this Prospectus:

             1.   The Company's Annual Report on Form 10-K for the year
                  ended December 31, 1997 (including portions of the Annual
                  Report to Stockholders); and

             2.   The Company's Registration Statement on Form 8-A dated
                  November 17, 1988.

             All documents subsequently filed by the Company with the SEC
          pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange
          Act prior to the termination of the offering made by this
          Prospectus shall be deemed to be incorporated by reference in
          this Prospectus.

             Any statement contained in a document incorporated or deemed
          to be incorporated by reference herein shall be modified or
          superseded for purposes of this Prospectus to the extent that a
          statement contained herein or in any other subsequently filed
          document which is or is deemed to be incorporated by reference
          herein modifies or supersedes such statement.  Any statement so
          modified or superseded shall not be deemed, except as so modified
          or superseded, to constitute a part of this Prospectus.

             The Company hereby undertakes to provide without charge to
          each person, including any beneficial owner, to whom a copy of
          this Prospectus has been delivered, on the written or oral
          request of any such person, a copy of any or all of the documents
          referred to above which have been or may be incorporated in this
          Prospectus by reference, other than exhibits to such documents,
          unless such exhibits are specifically incorporated by reference
          into such documents.  Requests for copies of such documents
          should be addressed to Office of the Treasurer, MDU Resources


                                  -2-
     <PAGE>


          Group, Inc., Schuchart Building, 918 East Divide Avenue, P.O. Box
          5650, Bismarck, North Dakota 58506-5650, telephone (701) 222-
          7900.  

             The information relating to the Company contained in this
          Prospectus does not purport to be comprehensive and should be
          read together with the information contained in any or all
          documents which have been or may be incorporated in this
          Prospectus by reference.

                                     THE COMPANY

             The Company is a diversified natural resource company
          incorporated under the laws of the State of Delaware in 1924. 
          The Company's principal executive offices are located at the
          following address:  Schuchart Building, 918 East Divide Avenue,
          P.O. Box 5650, Bismarck, North Dakota 58506-5650, telephone (701)
          222-7900.

             Montana-Dakota Utilities Co., the public utility division of
          the Company, provides electric and/or natural gas and propane
          distribution service at retail to 256 communities in North
          Dakota, eastern Montana, northern and western South Dakota and
          northern Wyoming, and owns and operates electric power generation
          and transmission facilities.  The Company, through its wholly
          owned subsidiary, Centennial Energy Holdings, Inc., owns
          Williston Basin Interstate Pipeline Company ("Williston Basin"),
          Knife River Corporation ("Knife River"), the Fidelity Oil Group
          ("Fidelity Oil") and Utility Services, Inc. ("Utility Services"). 
          Williston Basin produces natural gas and provides underground
          storage, transportation and gathering services through an
          interstate pipeline system serving Montana, North Dakota, South
          Dakota and Wyoming and, through its wholly owned subsidiary,
          Prairielands Energy Marketing, Inc., seeks new energy markets
          while continuing to expand present markets for natural gas and
          propane.  Knife River, through its wholly owned subsidiary, KRC
          Holdings, Inc. and its subsidiaries, surface mines and markets
          aggregates and related construction materials in Alaska,
          California, Hawaii and Oregon.  In addition, Knife River surface
          mines and markets low sulfur lignite coal at mines located in
          Montana and North Dakota.  Fidelity Oil is comprised of Fidelity
          Oil Co. and Fidelity Oil Holdings, Inc., which own oil and
          natural gas interests throughout the United States, the Gulf of
          Mexico and Canada through investments with several oil and
          natural gas producers.  Utility Services, through its wholly
          owned subsidiaries, International Line Builders, Inc. and High
          Line Equipment, Inc., installs and repairs electric transmission
          and distribution power lines in the western United States and
          Hawaii and provides related supplies and equipment.

                                 SELLING SHAREHOLDERS

               The Company acquired all of the stock of Morse Bros., Inc.
          ("MBI") and S2 - F Corp. ("S2 - F") on March 5, 1998.  As a
          result of these transactions, shareholders of MBI and S2 - F
          received an aggregate of 3,848,351 shares of Company Common
          Stock.  The terms of two separate, but substantially identical
          Stock Disposition Agreements, each dated March 5, 1998, between
          the Company and certain MBI shareholders (the "MBI Selling
          Shareholders") and the Company and the S2 - F shareholders provide 
          that the Company will register for resale under the Securities Act 
          certain of the shares of Company Common Stock issued to the MBI 
          Selling Shareholders and the S2 - F shareholders listed in the 
          table below.  Each Selling Shareholder is offering all shares of
          Company Common Stock owned by such Selling Shareholder that it is
          permitted to sell as of the date of this Prospectus under the
          Stock Disposition Agreement to which it is a party.(1)

               Pursuant to separate but substantially identical
          Stockholders' Agreements dated as of March 5, 1998, the Common
          Stock owned after the offering of the Offered Shares by each
          Selling Shareholder is subject to certain restrictions, including
          but not limited to (i) limitations on each Selling Shareholder's
          ability to transfer its shares for a period of four years and
          (ii) for a period of five years, requiring each Selling
          Shareholder to (A) cause all of the shares to be present, in
          person or proxy, for quorum purposes, at all meetings of
          stockholders of the Company, (B) vote all shares entitled to be

          ----------------
          (1)   A group of previous MBI shareholders owning in the 
                aggregate 145,717 shares of Company Common Stock are not
                parties to the MBI Stock Disposition Agreements and, 
                therefore, are not offering for sale shares of Company 
                Common Stock pursuant to this offering.


                                  -3-
     <PAGE>


          voted by the Selling Shareholder in accordance with the
          recommendation of the Board of Directors of the Company, other
          than the election of directors, (C) not, alone or with any other
          person, seek or accept a seat on the Board of Directors of the
          Company, (D) not acquire any additional shares of Company Common
          Stock except through (1) the reinvestment of dividends or (2)
          compensation plans of the Company, (E) not solicit proxies to
          vote any shares of Company Common Stock, (F) not form or
          participate in a "group" (within the meaning of Section 13(d)(3)
          of the Exchange Act) with respect to the shares, (G) not solicit
          or encourage any person to acquire shares of Company Common Stock
          and (H) not make any proposal with respect to a merger or
          business combination involving the Company or any of its
          subsidiaries.

               The aforementioned Stock Disposition Agreements provide that
          the Company will issue to the MBI Selling Shareholders or the 
          S2 - F shareholders, as the case may be, additional shares of 
          Company Common Stock pursuant to a price formula if the gross 
          sale price for the Offered Shares sold by the Selling Shareholders
          (or, in the event no sales are made, if the market price of the 
          Company Common Stock on September 1, 1998) is lower than $29.3125 
          per share.  Each such Stock Disposition Agreement further provides 
          that the number of additional shares to be issued pursuant thereto 
          will in no event exceed a stated number which, in the case of the 
          MBI Selling Shareholders is 300,000 shares and, in the case of the 
          S2 - F shareholders is 5,000 shares.  The share information set 
          forth in the Selling Shareholder Table below and in Note 1 thereto 
          assumes no such additional issuances occur.

             The following table lists the Selling Shareholders, the number
          of shares of Common Stock of the Company beneficially owned by
          each Selling Shareholder as of the date of this Prospectus, the
          number of Offered Shares to be offered for sale by each Selling
          Shareholder and the number of outstanding shares of Common Stock
          to be owned by each Selling Shareholder after completion of the
          offering.




                                  -4-
     <PAGE>

                                       COMMON                   COMMON
                                       STOCK        SHARES       STOCK
                                       OWNED        TO BE        OWNED
                   SELLING            PRIOR TO      OFFERED      AFTER
                SHAREHOLDER(1)(2)     OFFERING      HEREBY      OFFERING
          ----------------------------------------------------------------

           J. Franklin Morse(3)       380,841      100,238     280,603

           The Joseph D. Morse
             Revocable Trust, dated
             January 25, 1993(4)       88,069       24,294      63,775

           The Forrest W. Morse
             Revocable Trust, dated
             May 21, 1993(5)          104,187       28,739      75,448

           The William F. Morse
             Revocable Trust, dated
             October 5, 1993(6)        96,127       26,516      69,611

           Scot F. Morse               22,832        8,301      14,531

           Kerry Lin Tong              22,832        8,301      14,531

           Michael D. Morse(7)        393,491      143,117     250,374

           Derek C. Morse(8)            8,293        3,018       5,275

           Brock M. Morse(9)            8,293        3,018       5,275

           Tari Morse as Custodian
             for Tyler A. Morse Under
             the Oregon Uniform
             Transfer to Minors Act     8,293        3,018       5,275

           The Tyler A. Morse
             Trust, dated April 24,
             1997                      16,126        5,865      10,261

           The Joy L. Morse
             Irrevocable Trust, dated
             December 24, 1996         19,867        7,224      12,643

           The Brock M. Morse
             Trust, dated April 24,
             1997                      16,126        5,865      10,261

           The Derek C. Morse
             Trust, dated April 24,
             1997(8)                   16,126        5,865      10,261

           Steven G. Morse(10)         464,729      169,021     295,708

           Jennifer L. Smith           12,094        4,398       7,696

           Gregory F. Morse(11)       461,757      162,684     299,073

           The Sara L. Morse Trust,
             dated October 31, 1995     8,292        3,018       5,274

           The Bryan T. Morse
             Trust, dated October 31,
             1995                       8,292        3,018       5,274

           Jonathan B. Morse(12)      304,403      110,712     193,691

           Travis L. Morse              3,741        1,359       2,382

           Gabriel J. Morse             3,741        1,359       2,382

           Susan L. Morse as
             Custodian for Justin W.
             Morse Under the Oregon
             Uniform Transfer to
             Minors Act                 3,741        1,359       2,382

           Susan L. Morse as
             Custodian for Amanda N.
             Morse Under the Oregon
             Uniform Transfers to
             Minors Act                 3,741        1,359       2,382


                                  -5-
     <PAGE>



                                       COMMON                    COMMON
                                       STOCK        SHARES       STOCK
                                       OWNED        TO BE        OWNED
                   SELLING            PRIOR TO      OFFERED      AFTER
                SHAREHOLDER(1)(2)     OFFERING      HEREBY      OFFERING
          ----------------------------------------------------------------

           The Travis Lee Morse
             Gift Trust, dated May
             15, 1997                   8,681        3,160       5,521

           The Justin Wade Morse
             Gift Trust, dated May
             15, 1997                   8,681        3,160       5,521

           The Amanda Nicole Morse
             Gift Trust, dated May
             15, 1997                   8,681        3,160       5,521

           The Gabriel Jerome Morse
             Gift Trust, dated May
             15, 1997                   8,681        3,160       5,521

           Raymond W. Morse(13)       123,104       44,770      78,334

           Phyllis J. Helland         123,084       44,770      78,314

           Diana M. Perdue(14)        123,104       44,770      78,334

           John G. Perdue             123,084       44,770      78,314

           The Anne M. Novakovich
             Family Trust, dated
             October 29, 1996(15)     158,587       57,678     100,909

           The Anne M. Novakovich
             Children's Trust, dated
             April 8, 1997(15)         56,447       20,532      35,915

           Angela Andersen              4,418        1,606       2,812

           Clinton D. Andersen          4,418        1,606       2,812

           The McBride Family
             Limited Partnership(16)   84,149       30,606      53,543

           Debbie McCool                6,705        2,436       4,269

           Richard Lyon(17)             6,705        2,436       4,269

           Northwest Christian
             College                   60,150       60,150           0

           Willamette Valley
             Rehabilitation Center,
             Inc.                       8,270        8,270           0

           R. Gary Ferguson(18)        95,981       14,225      81,756

           Dennis L. Smallwood(19)     53,989        8,001      45,988
          ----------------------------------------------------------------
           Totals                   3,542,953    1,230,932   2,312,021
          ================================================================

          (1) If the Company Common Stock holdings of the Selling Shareholders
              were aggregated, then, based upon the number of shares of
              the Company Common Stock outstanding on December 31, 1997
              and giving effect both to the issuance on March 5, 1998 of
              3,848,351 shares of Company Common Stock to former
              shareholders of MBI and S2 - F, including 3,542,953 shares
              issued to the Selling Shareholders, and to the sale of
              1,230,932 of such shares pursuant to this Prospectus, the
              total number of shares of Company Common Stock owned by the
              Selling Shareholders would be 2,312,021 shares, or
              approximately 7.00% of the outstanding Company Common
              Stock.


                                  -6-
     <PAGE>


          (2) The MBI Selling Shareholders, which comprise all of the 
              Selling Shareholders other than R. Gary Ferguson and
              Dennis L. Smallwood, filed a Schedule 13G with the SEC on
              March 13, 1998 to report their share ownership in the
              Company but disclaimed the existence of a "group."  If the
              Company Common Stock holdings of the MBI Selling 
              Shareholders were aggregated, then, based upon the number 
              of shares of Company Common Stock outstanding on 
              December 31, 1997 and giving effect both to the issuance
              on March 5, 1998 of 3,848,351 shares of Company Common
              Stock to former shareholders of MBI and S2 - F, including 
              3,392,983 shares issued to the MBI Selling Shareholders,
              and to the sale of 1,208,706 of such shares pursuant to 
              this Prospectus, the total number of shares of Company Common
              Stock owned by the MBI Selling Shareholders would be 2,184,277 
              shares, or approximately 6.62% of the outstanding Company 
              Common Stock. 

          (3) President of MBI, now a subsidiary of the Company.

          (4) Joseph D. Morse is a former officer and director of MBI.

          (5) Forrest W. Morse is a former officer and director of MBI.

          (6) William F. Morse is a former officer and director of MBI.

          (7) Former director and current manager of MBI.

          (8) Former employee of MBI.

          (9) Former employee of MBI.

          (10) Former director and manager of and consultant to MBI.

          (11) Former director and current manager of MBI.

          (12) Former director of and consultant to MBI.

          (13) Former director of MBI.

          (14) Former director of MBI.

          (15) Anne M. Novakovich is a former director of MBI.

          (16) Judith M. McBride, a partner of the McBride Family Limited
               Partnership, is a former director of MBI.

          (17) Current employee of MBI.

          (18) Former director and current officer of S2 - F.

          (19) Former director and current officer of S2 - F.




                                   USE OF PROCEEDS

            The net proceeds to the Company from the sale of the Offered
          Shares by the Company may be used for the refunding of outstanding 
          debt obligations, for corporate development purposes (including 
          the potential acquisition of businesses and/or business assets), 
          and for other general corporate purposes.  The Company will not
          receive any of the proceeds from the sale of Offered Shares
          offered for sale by the Selling Shareholders.  See "Selling
          Shareholders."


                        DESCRIPTION OF COMMON STOCK AND RIGHTS

            The Company's authorized capital stock consists of 75,000,000
          shares of Common Stock, $3.33 par value, 500,000 shares of
          Preferred Stock, $100 par value, 1,000,000 shares of Preferred
          Stock A, without par value, and 500,000 shares of Preference
          Stock, without par value.


                                  -7-
     <PAGE>
           

            COMMON STOCK.  The following statements are summaries of
          certain provisions with respect to the Common Stock of the
          Company contained in its Certificate of Incorporation, as
          amended, as affected by certain rights of the holders, if any, of
          the Company's Preferred Stock, Preferred Stock A and Preference
          Stock and by certain provisions of its Indenture of Mortgage,
          dated May 1, 1939, between the Company and The New York Trust
          Company (The Bank of New York, successor Corporate Trustee) and
          A.C. Downing (W.T. Cunningham, successor Co-Trustee), as restated
          in the Forty-fifth Supplemental Indenture, dated as of April 21,
          1992 and as further amended, (the "Indenture").  Such statements,
          which do not purport to be complete, are subject in all respects
          to the full provisions of the Certificate of Incorporation, as
          amended, and the Indenture, to which reference is made.

            Dividends may be paid on the Common Stock as determined by the
          Board of Directors out of funds legally available therefor but
          only if full dividends on all outstanding series of the Preferred
          Stock, Preferred Stock A and Preference Stock for the then
          current and all prior dividend periods and any required sinking
          fund payments with respect to any outstanding series of such
          Preferred Stock, Preferred Stock A or Preference Stock have been
          paid or provided for.  The Company's Indenture contains certain
          restrictions upon, among other things, the payment or declaration
          of cash dividends on shares of the Company's Common Stock.

            The holders of the Common Stock have exclusive voting rights
          on the basis of one vote per share, except as may be fixed and
          determined by the Board of Directors in respect of series of the
          Preferred Stock and Preferred Stock A, or as set forth in the
          Certificate of Incorporation, as amended, with respect to the
          Preference Stock or as otherwise provided by law.

            Whenever the cumulative dividends on any outstanding series of
          the Preferred Stock, Preferred Stock A or Preference Stock are
          unpaid, in whole or in part, for a period of one year, the
          holders of the Preferred Stock and Preferred Stock A, or
          Preference Stock, as the case may be, shall be entitled to the
          same voting rights as the holders of the Common Stock, namely one
          vote for each share of Preferred Stock, Preferred Stock A or
          Preference Stock held.  Such voting rights remain in effect until
          all arrears in the payment of the cumulative dividends shall have
          been paid and the dividends thereon for the current dividend
          period shall have been declared and the funds for the payment
          thereof set aside.  In addition, the consent of the holders, if
          any, of specified percentages of certain series of the Preferred
          Stock and Preferred Stock A is required in connection with
          certain amendments to the Company's Certificate of Incorporation,
          as amended, and certain increases in authorized amounts or
          changes in stock senior to the Common Stock.

            The holders of the Common Stock are entitled in liquidation to
          share ratably in the assets of the Company after required
          preferential payments to the holders of the Preferred Stock,
          Preferred Stock A and Preference Stock.

            The Common Stock has no preemptive or conversion rights and
          there are no redemption or sinking fund provisions applicable
          thereto.  The outstanding Common Stock is fully paid and
          nonassessable.

            The Company's Certificate of Incorporation, as amended,
          contains certain provisions which make it difficult to obtain
          control of the Company through transactions not having the
          approval of the Board of Directors, including:

               A provision providing for classification of the Board into
            three classes comprised of as nearly equal a number of
            directors as possible, establishing the method of filling any
            vacancies, and providing that directors may be removed only
            for cause;

               A provision requiring the affirmative vote of 80% of the
            outstanding shares of all classes of capital stock of the
            Company entitled to vote for directors in order to authorize
            certain "Business Combinations." Any such Business Combination
            will also be required to meet certain "fair price" and
            procedural requirements.  Neither an 80% stockholder vote nor
            "fair price" will be required for any Business Combination
            which has been approved by two-thirds of the "Continuing
            Directors;"


                                  -8-
     <PAGE>


               A provision permitting the Board of Directors to consider
            certain specified factors in determining whether or not to
            approve certain Business Combinations;

               A provision requiring that action by stockholders be taken
            only at a stockholders' meeting and limiting the ability of
            stockholders to call a special meeting; and

               A provision providing that certain Articles of the
            Certificate of Incorporation, as amended, cannot be altered
            except by 80% of the stockholders entitled to vote unless
            approved by two-thirds of the Continuing Directors.

            The Transfer Agent and Registrar for the Common Stock is
          Norwest Bank Minnesota, N.A., South Saint Paul, Minnesota.

            RIGHTS.  On November 3, 1988, the Board of Directors of the
          Company declared a dividend of one Right for each outstanding
          share of Common Stock.  The description and terms of the Rights
          are set forth in a Rights Agreement, dated as of November 3, 1988
          (the "Rights Agreement"), between the Company and Norwest Bank
          Minnesota, N.A., as Rights Agent.  Each Right entitles the
          registered holder, until the earlier of November 18, 1998 and the
          redemption of the Rights, to purchase from the Company two-thirds
          of one one-hundredth (one one-hundred-and-fiftieth) of a share of
          Series A Preference Stock ("Preference Share") at an exercise
          price of $50 per one one-hundredth ($33.33 per one one-hundred-
          and-fiftieth) of a Preference Share (the "Purchase Price"),
          subject to certain adjustments.

            Capitalized terms used in the following description and not
          otherwise defined herein have the meanings set forth in the
          Rights Agreement.

            The Rights initially are represented by the certificates for
          Common Stock and will not be exercisable or transferable apart
          from the Common Stock until the earlier to occur of (i) 10 days
          following a public announcement that a person or group of
          affiliated or associated persons ("Acquiring Person") has
          acquired, or obtained the right to acquire, beneficial ownership
          of 20% or more of the outstanding Common Stock or (ii) 10 days
          following the commencement of, or announcement of an intention to
          make, a tender offer or exchange offer the consummation of which
          would result in the beneficial ownership by a person or group of
          30% or more of such outstanding Common Stock (the earlier of such
          dates being called the "Distribution Date").

            In the event that the Company is acquired in a merger or other
          business combination transaction or 50% or more of its
          consolidated assets or earning power are sold, proper provision
          will be made so that each holder of a Right will thereafter have
          the right to receive, upon the exercise thereof at the then
          current exercise price of the Right multiplied by the number of
          one one-hundredths of a Preference Share for which a Right is
          then exercisable, in accordance with the terms of the Rights
          Agreement, such number of shares of common stock of the acquiring
          company as shall be equal to the result obtained by (i)
          multiplying the then current exercise price of a Right by the
          number of one one-hundredths of a Preference Share for which a
          Right is then exercisable, and (ii) dividing that product by 50%
          of the then current per share market price of the common stock of
          the acquiring company on the date of consummation of such merger
          or other business combination.

            In the event that any Person becomes an Acquiring Person,
          proper provision shall be made so that each holder of a Right,
          other than Rights beneficially owned by the Acquiring Person
          (which will thereafter be void), will thereafter have the right
          to receive upon exercise thereof at a price equal to the then
          current exercise price of the Right multiplied by the number of
          one one-hundredths of a Preference Share for which a Right is
          then exercisable, in accordance with the terms of the Rights
          Agreement and in lieu of Preference Shares, such number of shares
          of Common Stock of the Company as shall be equal to the result
          obtained by (i) multiplying the then current exercise price of
          the Right by the number of one one-hundredths of a Preference
          Share for which a Right is then exercisable, and (ii) dividing


                                  -9-
     <PAGE>


          that product by 50% of the then current per share market price of
          the Company's Common Stock on the date such person became an
          Acquiring Person.

            The Rights will first become exercisable on the Distribution
          Date (unless sooner redeemed) and could then begin trading
          separately from the Common Stock.  The Rights will expire on
          November 18, 1998 (the "Final Expiration Date"), unless the Final
          Expiration Date is extended or unless the Rights are earlier
          redeemed by the Company, in each case as described below.

            At any time prior to the time any person becomes an Acquiring
          Person, the Board of Directors of the Company may redeem the
          Rights in whole, but not in part, at a price of $.01333 per Right
          (the "Redemption Price").  No redemption will be permitted after
          the time any person becomes an Acquiring Person.  Immediately
          upon any redemption of the Rights, the right to exercise the
          Rights will terminate and the only right of the holders of Rights
          will be to receive the Redemption Price.

            The terms of the Rights may be amended by the Board of
          Directors of the Company without the consent of the holders of
          the Rights, including an amendment to extend the Final Expiration
          Date, and, provided there is no Acquiring Person, to extend the
          period during which the Rights may be redeemed, except that from
          and after such time as any person becomes an Acquiring Person no
          such amendment may adversely affect the interests of the holders
          of the Rights.

            Until a Right is exercised, the holder thereof, as such, will
          have no rights as a shareholder of the Company, including,
          without limitation, the right to vote or to receive dividends.

            The Purchase Price payable, and the number of Preference
          Shares or other securities or property issuable, upon exercise of
          the Rights are subject to adjustment from time to time to prevent
          dilution (i) in the event of a stock dividend on, or a
          subdivision, combination or reclassification of, the Preference
          Shares, (ii) upon the grant to holders of the Preference Shares
          of certain rights or warrants to subscribe for or purchase
          Preference Shares at a price, or securities convertible into
          Preference Shares with a conversion price, less than the then
          current market price of the Preference Shares or (iii) upon the
          distribution to holders of the Preference Shares of evidences of
          indebtedness or assets (excluding regular periodic cash dividends
          paid out of earnings or retained earnings or dividends payable in
          Preference Shares) or of subscription rights or warrants (other
          than those referred to above).

            The number of outstanding Rights and the number of one one-
          hundredths of a Preference Share issuable upon exercise of each
          Right are also subject to adjustment in the event of a stock
          split of the Common Stock or a stock dividend on the Common Stock
          payable in Common Stock or subdivisions, consolidations or
          combinations of the Common Stock occurring, in any such case,
          prior to the Distribution Date.

            Preference Shares purchasable upon exercise of the Rights will
          not be redeemable.  Each Preference Share will be entitled to a
          preferential quarterly dividend payment equal to the greater of
          (a) $1 per share or (b) 150 times the aggregate dividend declared
          per share of Common Stock.  In the event of liquidation, the
          holders of the Preference Shares will be entitled to a
          preferential liquidation payment of $100 per share, provided that
          holders of the Preference Shares will be entitled to an aggregate
          amount per share equal to 150 times the aggregate amount to be
          distributed per share to the holders of shares of Common Stock. 
          Each Preference Share will have no vote, except as otherwise
          provided for by law or as set forth in the Company's Certificate
          of Incorporation, as amended.  Finally, in the event of any
          merger, consolidation or other transaction in which shares of
          Common Stock are exchanged, each Preference Share will be
          entitled to receive 150 times the amount received per share of
          Common Stock.  These rights are protected by customary
          antidilution provisions.

            Because of the nature of the Preference Shares' dividend and
          liquidation rights, the value of the number of one one-hundredths
          of a Preference Share purchasable upon exercise of each Right
          should approximate the value of one share of Common Stock.


                                  -10-
     <PAGE>


            With certain exceptions, no adjustment in the Purchase Price
          will be required until cumulative adjustments require an
          adjustment of at least 1% in such Purchase Price.  No fractional
          Preference Shares will be issued (other than fractions which are
          integral multiples of one one-hundredth of a Preference Share,
          which may, at the election of the Company, be evidenced by
          depositary receipts) and in lieu thereof, an adjustment in cash
          will be made based on the market price of the Preference Shares
          on the last trading day prior to the date of exercise.

            One Right was distributed to shareholders of the Company for
          each share of Common Stock owned of record by them on November
          18, 1988.  Until the Distribution Date, the Company will issue
          one Right with each share of Common Stock that shall become
          outstanding so that all shares of Common Stock will have attached
          Rights.

            The Rights have certain anti-takeover effects.  The Rights may
          cause substantial dilution to a person or group that attempts to
          acquire the Company on terms not approved by the Board of
          Directors of the Company, except pursuant to an offer conditioned
          on a substantial number of Rights being acquired.  The Rights
          should not interfere with any merger or other business
          combination approved by the Board of Directors prior to the time
          that any person becomes an Acquiring Person, since until such
          time the Rights may be redeemed by the Company at $.01333 per
          Right.

                                 PLAN OF DISTRIBUTION

             The Company and the Selling Shareholders may sell the Offered
          Shares in one of four ways:  (i) through the solicitation of
          proposals of underwriters or dealers to purchase the Offered
          Shares, (ii) through underwriters or dealers on a negotiated
          basis, (iii) directly to a limited number of purchasers or to a
          single purchaser or (iv) through agents.  The applicable
          Prospectus Supplement with respect to the Offered Shares will set
          forth the terms of the offering of such Offered Shares, including
          the name or names of any underwriters, the purchase price of such
          Offered Shares and the net proceeds to the Company and the
          Selling Shareholders from such sale, any underwriting discounts
          and other items constituting underwriters' compensation, any
          initial public offering price and any discounts or concessions
          allowed or reallowed or paid to dealers.  Any initial public
          offering price and any discounts or concessions allowed or
          reallowed or paid to dealers may be changed from time to time. 
          In addition, any Offered Shares offered for sale by the Selling
          Shareholders that qualify for sale pursuant to Rule 144 may be
          sold under Rule 144 rather than pursuant to this Prospectus.

             If underwriters are used in the sale, such Offered Shares will
          be acquired by the underwriters for their own account and may be
          resold from time to time in one or more transactions, including
          negotiated transactions, at a fixed public offering price or at
          varying prices determined at the time of sale.  The Offered
          Shares may be offered to the public either through underwriting
          syndicates represented by one or more managing underwriters or
          directly by one or more underwriting firms.  The underwriter or
          underwriters with respect to a particular underwritten offering
          of Offered Shares will be named in the Prospectus Supplement
          relating to such offering and, if an underwriting syndicate is
          used, the managing underwriter or underwriters will be set forth
          on the cover page of such Prospectus Supplement.  Unless
          otherwise set forth in a Prospectus Supplement, the obligations
          of the underwriters to purchase the Offered Shares will be
          subject to certain conditions precedent and the underwriters will
          be obligated to purchase all such Offered Shares if any are
          purchased.

             The Offered Shares may be sold directly by the Company and the
          Selling Shareholders or through agents designated by the Company
          and the Selling Shareholders from time to time.  The applicable
          Prospectus Supplement will set forth the name of any agent
          involved in the offer or sale of the Offered Shares and any
          commissions payable by the Company or the Selling Shareholders to
          such agent.  Unless otherwise indicated in the Prospectus
          Supplement, any such agent will be acting on a best efforts basis
          for the period of its appointment.

             The Selling Shareholders and any broker-dealer or agents that
          participate with the Selling Shareholders in the distribution of
          the Offered Shares offered for sale by the Selling Shareholders


                                  -11-
     <PAGE>


          may be deemed to be "underwriters" within the meaning of Section
          2(11) of the Securities Act, and any commissions received by them
          and any profit on the resale of such Offered Shares purchased by
          them may be deemed to be underwriting commissions or discounts
          under the Securities Act.

             The Company has agreed to indemnify the Selling Shareholders
          against certain liabilities, including liabilities under the
          Securities Act.  Agents and underwriters may be entitled under
          agreements entered into with the Company and the Selling
          Shareholders to indemnification or contribution by the Company
          and the Selling Shareholders against certain liabilities,
          including certain liabilities under the Securities Act.

             The place and time of delivery for the Offered Shares in
          respect of which this Prospectus is delivered will be set forth
          in the accompanying Prospectus Supplement.


                                       EXPERTS

             The Company's audited consolidated financial statements
          incorporated in this Prospectus by reference to the Company's
          Annual Report on Form 10-K for the year ended December 31, 1997,
          have been audited by Arthur Andersen LLP, independent public
          accountants, as indicated in their report with respect thereto,
          and are incorporated herein in reliance upon such report and upon
          the authority of said firm as experts in accounting and auditing
          in giving said report.

             The information set forth in the reports, each dated January
          12, 1998, of Ralph E. Davis Associates, Inc. concerning oil and
          natural gas reserves, appearing in the Company's Annual Report on
          Form 10-K for the year ended December 31, 1997, has been reviewed
          and verified by Ralph E. Davis Associates, Inc. and has been
          incorporated herein in reliance upon the authority of said firm
          as experts.

             The information set forth in the report, dated May 9, 1994, of
          Weir International Mining Consultants relating to lignite coal
          reserves of Knife River, appearing in the Company's Annual Report
          on Form 10-K for the year ended December 31, 1997, has been
          reviewed and verified by Weir International Mining Consultants
          and has been incorporated herein in reliance upon the authority
          of said firm as experts.


                                    LEGAL OPINIONS

             The validity of the Offered Shares has been passed upon for
          the Company by Lester H. Loble, II, Esq., General Counsel for the
          Company and also by Reid & Priest LLP, 40 West 57th Street, New
          York, New York 10019, and will be passed upon for any
          underwriter, dealer or agent by Berlack, Israels & Liberman
          LLP, 120 West 45th Street, New York, New York 10036.



                                  -12-
     <PAGE>


          NO DEALER, SALESPERSON OR OTHER PERSON HAS BEEN AUTHORIZED TO
          GIVE ANY INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN
          THOSE CONTAINED IN THIS PROSPECTUS IN CONNECTION WITH THE OFFER
          CONTAINED HEREIN, AND, IF GIVEN OR MADE, SUCH INFORMATION OR
          REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED
          BY THE COMPANY OR BY ANY SELLING SHAREHOLDER.  NEITHER THE
          DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL,
          UNDER ANY CIRCUMSTANCES, CREATE AN IMPLICATION THAT THERE HAS
          BEEN NO CHANGE IN THE AFFAIRS OF THE COMPANY SINCE THE DATE AS OF
          WHICH INFORMATION IS GIVEN IN THIS PROSPECTUS.  THIS PROSPECTUS
          DOES NOT CONSTITUTE AN OFFER OR SOLICITATION BY ANYONE IN ANY
          JURISDICTION IN WHICH SUCH OFFER OR SOLICITATION IS NOT
          AUTHORIZED OR IN WHICH THE PERSON MAKING SUCH OFFER OR
          SOLICITATION IS NOT QUALIFIED TO DO SO OR TO ANYONE TO WHOM IT IS
          UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION.




    
    <PAGE>


                                       PART II

                        INFORMATION NOT REQUIRED IN PROSPECTUS

          ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.*

             SEC Registration Fee . . . . . . . . . . . .     $ 35,543.82
             Listing Fees . . . . . . . . . . . . . . . .     $ 47,360.00
             Printing and Engraving Expenses  . . . . . .     $ 30,000.00
             Transfer Agent Fees  . . . . . . . . . . . .     $  3,800.00
             Legal Fees and Expenses**  . . . . . . . . .     $125,000.00
             Accountants' Fees and Expenses . . . . . . .     $ 15,000.00
             Miscellaneous  . . . . . . . . . . . . . . .        3,296.18
                                                              -----------

                Total . . . . . . . . . . . . . . . . . .     $260,000.00 
                                                              ===========

          ----------
          *    All amounts other than the SEC registration fee are estimated.
          **   Includes $50,000 in legal fees and expenses to be paid by
               the Selling Shareholders.

          ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

             The Company's Bylaws include the following provision:

             7.07  INDEMNIFICATION OF OFFICERS, DIRECTORS, EMPLOYEES AND
                   AGENTS; INSURANCE.

             (a)    The Corporation shall indemnify any person who was or
                    is a party or is threatened to be made a party to any
                    threatened, pending or completed action, suit or
                    proceeding, whether civil, criminal, administrative or
                    investigative (other than an action by or in the right
                    of the Corporation) by reason of the fact that such
                    person is or was a director, officer, employee or agent
                    of the Corporation, or is or was serving at the request
                    of the Corporation as a director, officer, employee or
                    agent of another corporation, partnership, joint
                    venture, trust or other enterprise, against expenses
                    (including attorneys' fees), judgments, fines and
                    amounts paid in settlement actually and reasonably
                    incurred by such person in connection with such action,
                    suit or proceeding if such person acted in good faith
                    and in a manner such person reasonably believed to be
                    in or not opposed to the best interests of the
                    Corporation, and, with respect to any criminal action
                    or proceeding, had no reasonable cause to believe such
                    person's conduct was unlawful.  The termination of any
                    action, suit or proceeding by judgment, order,
                    settlement, conviction, or upon a plea of nolo
                    contendere or its equivalent, shall not, of itself,
                    create a presumption that the person did not act in
                    good faith and in a manner which such person reasonably
                    believed to be in or not opposed to the best interest
                    of the Corporation, and, with respect to any criminal
                    action or proceeding, had reasonable cause to believe
                    that such person's conduct was unlawful.

             (b)    The Corporation shall indemnify any person who was or
                    is a party or is threatened to be made a party to any
                    threatened, pending or completed action or suit by or
                    in the right of the Corporation to procure a judgment
                    in its favor by reason of the fact that such person is
                    or was a director, officer, employee or agent of the
                    Corporation, or is or was serving at the request of the
                    Corporation as a director, officer, employee or agent
                    of another corporation, partnership, joint venture,
                    trust or other enterprise against expenses (including
                    attorneys' fees) actually and reasonably incurred by
                    such person in connection with the defense or
                    settlement of such action or suit if such person acted
                    in good faith and in a manner such person reasonably
                    believed to be in or not opposed to the best interests


     <PAGE>
                            
                    of the Corporation and except that no indemnification
                    shall be made in respect of any claim, issue or matter
                    as to which such person shall have been adjudged to be
                    liable to the Corporation, unless and only to the
                    extent that the Court of Chancery or the court in which
                    such action or suit was brought, shall determine upon
                    application that, despite the adjudication of liability
                    but in view of all the circumstances of the case, such
                    person is fairly and reasonably entitled to indemnity
                    for such expenses which the Court of Chancery or such
                    other court shall deem proper.

             (c)    To the extent that a present or former director,
                    officer, employee or agent of a corporation has been
                    successful on the merits or otherwise in defense of any
                    action, suit or proceeding referred to in subsections
                    (a) and (b), or in defense of any claim, issue or
                    matter therein, such person shall be indemnified
                    against expenses (including attorneys' fees) actually
                    and reasonably incurred by such person in connection
                    therewith.

             (d)    Any indemnification under subsections (a) and (b) of
                    this Section (unless ordered by a court) shall be made
                    by the Corporation only as authorized in the specific
                    case upon a determination that indemnification of the
                    present or former director, officer, employee or agent
                    is proper in the circumstances because such person has
                    met the applicable standard of conduct as set forth in
                    subsections (a) and (b) of this Section.  Such
                    determination shall be made (1) by a majority vote of
                    the directors who are not parties to such action, suit
                    or proceeding, even though less than a quorum, or (2)
                    by a committee of such directors designated by majority
                    vote of such directors, even though less than a quorum,
                    or (3) if there are no such directors, or if such
                    directors so direct, by independent legal counsel in a
                    written opinion, or (4) by the stockholders.

             (e)    Expenses (including attorneys' fees) incurred by a
                    present or former officer or director in defending any
                    civil, criminal, administrative or investigative
                    action, suit or proceeding shall be paid by the
                    Corporation in advance of the final disposition of such
                    action, suit or proceeding upon receipt of an
                    undertaking by or on behalf of the director or officer
                    to repay such amount if it shall ultimately be
                    determined that such person is not entitled to be
                    indemnified by the Corporation as authorized in this
                    Section.  Once the Corporation has received the
                    undertaking, the Corporation shall pay the officer or
                    director within 30 days of receipt by the Corporation
                    of a written application from the officer or director
                    for the expenses incurred by that officer or director. 
                    In the event the Corporation fails to pay within the
                    30-day period, the applicant shall have the right to
                    sue for recovery of the expenses contained in the
                    written application and, in addition, shall recover all
                    attorneys' fees and expenses incurred in the action to
                    enforce the application and the rights granted in this
                    Section 7.07.  Expenses (including attorneys' fees)
                    incurred by other employees and agents shall be paid
                    upon such terms and conditions, if any, as the Board of
                    Directors deems appropriate.

             (f)    The indemnification and advancement of expenses
                    provided by, or granted pursuant to, the other
                    subsections of this Section shall not be deemed
                    exclusive of any other rights to which those seeking
                    indemnity or advancement of expenses may be entitled
                    under any bylaw, agreement, vote of stockholders or
                    disinterested directors or otherwise, both as to action
                    in such person's official capacity and as to action in
                    another capacity while holding such office.

             (g)    The Corporation may purchase and maintain insurance on
                    behalf of any person who is or was a director, officer,
                    employee or agent of the Corporation, or is or was
                    serving at the request of the Corporation as a
                    director, officer, employee or agent of another
                    corporation, partnership, joint venture, trust or other
                    enterprise, against any liability asserted against such
                    person and incurred by such person in any such
                    capacity, or arising out of such person's status as
                    such, whether or not the Corporation would have the
                    power to indemnify such person against such liability
                    under the provisions of this Section.


     <PAGE>

             (h)    For the purposes of this Section, references to "the
                    Corporation" include all constituent corporations
                    absorbed in a consolidation or merger, as well as the
                    resulting or surviving corporation, so that any person
                    who is or was a director, officer, employee or agent of
                    such a constituent corporation or is or was serving at
                    the request of such constituent corporation as a
                    director, officer, employee or agent of another
                    corporation, partnership, joint venture, trust or other
                    enterprise, shall stand in the same position under the
                    provisions of this Section with respect to the
                    resulting or surviving corporation as such person would
                    if such person had served the resulting or surviving
                    corporation in the same capacity.

             (i)    For purposes of this Section, references to "other
                    enterprises" shall include employee benefit plans;
                    references to "fines" shall include any excise taxes
                    assessed on a person with respect to any employee
                    benefit plan; and references to "serving at the request
                    of the Corporation" shall include any service as a
                    director, officer, employee or agent of the Corporation
                    which imposes duties on, or involves services by, such
                    director, officer, employee or agent with respect to an
                    employee benefit plan, its participant or
                    beneficiaries; and a person who acted in good faith and
                    in a manner such person reasonably believed to be in
                    the interest of the participants and beneficiaries of
                    an employee benefit plan shall be deemed to have acted
                    in a manner "not opposed to the best interests of the
                    Corporation" as referred to in this Section.

             (j)    The indemnification and advancement of expenses
                    provided by, or granted pursuant to, this Section
                    shall, unless otherwise provided when authorized or
                    ratified, continue as to a person who has ceased to be
                    a director, officer, employee or agent and shall inure
                    to the benefit of the heirs, executors and
                    administrators of such a person.

             Section 145 of the General Corporation Law of the State of
          Delaware provides for indemnification of the Company's directors
          and officers in a variety of circumstances, which may include
          liabilities under the Securities Act of 1933.  The Company
          maintains liability insurance protecting it, as well as its
          directors and officers, against liability by reason of their
          being or having been directors or officers.



     <PAGE>
     

          ITEM 16.  EXHIBITS.

          Exhibit
          No.          Description
          --------     -----------

          **1          Form of Underwriting Agreement.

          *4(a)        Restated Certificate of Incorporation of the
                       Company, as amended to date (filed as Exhibit 3(a)
                       to Form 10-K for the year ended December 31, 1994,
                       in File No. 1-3480).

          *4(b)        Bylaws of the Company, as amended to date (filed as
                       Exhibit 3(b) to Form 10-K for the year ended
                       December 31, 1997, in File No. 1-3480).

          *4(c)        Indenture of Mortgage, dated as of May 1, 1939, as
                       restated in the Forty-fifth Supplemental Indenture,
                       dated as of April 21, 1992, between the Company and
                       The New York Trust Company (The Bank of New York,
                       successor Corporate Trustee) and A.C. Downing (W.T.
                       Cunningham, successor Co-Trustee) (filed as Exhibit
                       4(a) in Registration No. 33-66682).

          *4(d)        Forty-sixth, Forty-seventh and Forty-eighth
                       Supplements to the Indenture of Mortgage between the
                       Company and The New York Trust Company (The Bank of
                       New York, successor Corporate Trustee) and A.C.
                       Downing (W.T. Cunningham, successor Co-Trustee)
                       (filed as Exhibits 4(e), 4(f) and 4(g),
                       respectively, in Registration No. 33-53896).

          *4(e)        Rights Agreement, dated as of November 3, 1988,
                       between the Company and Norwest Bank Minnesota,
                       N.A., Rights Agent, (filed as Exhibit 4(c) in
                       Registration No. 33-66682).

          5(a)         Opinion of Lester H. Loble, II, Esq., General
                       Counsel to the Company.

          5(b)         Opinion of Reid & Priest LLP, counsel to the
                       Company.

          23(a)        Consent of Arthur Andersen LLP.

          23(b)        Consent of Ralph E. Davis Associates, Inc.

          23(c)        Consent of Weir International Mining Consultants.

          23(d)        The consents of Lester H. Loble, II, Esq. and Reid &
                       Priest LLP are contained in their opinions filed as
                       Exhibit 5(a) and Exhibit 5(b), respectively, to this
                       Registration Statement.

          24           Power of Attorney is contained on page II-7 of this
                       Registration Statement.

          --------------

          *  Incorporated herein by reference as indicated.
          ** To be filed by Form 8-K.


     <PAGE>

          ITEM 17.  UNDERTAKINGS.

             Insofar as indemnification for liabilities arising under the
          Securities Act may be permitted to directors, officers and
          controlling persons of the registrant pursuant to the foregoing
          provisions, or otherwise, the registrant has been advised that in
          the opinion of the SEC such indemnification is against public
          policy as expressed in the Securities Act and is, therefore,
          unenforceable.  In the event that a claim for indemnification
          against such liabilities (other than the payment by the
          registrant of expenses incurred or paid by a director, officer,
          or controlling person of the registrant in the successful defense
          of any action, suit or proceeding) is asserted by such director,
          officer or controlling person in connection with the securities
          being registered, the registrant will, unless in the opinion of
          its counsel the matter has been settled by controlling precedent,
          submit to a court of appropriate jurisdiction the question
          whether such indemnification by it is against public policy as
          expressed in the Securities Act and will be governed by the final
          adjudication of such issue.

             The undersigned registrant hereby undertakes:

             (1)  To file, during any period in which offers or sales are
          being made, a post-effective amendment to this registration
          statement:

               (a)  To include any prospectus required by section 10(a)(3)
             of the Securities Act;

               (b)  To reflect in the prospectus any facts or events
             arising after the effective date of the registration statement
             (or the most recent post-effective amendment thereof) which,
             individually or in the aggregate, represent a fundamental
             change in the information set forth in the registration
             statement.  Notwithstanding the foregoing, any increase or
             decrease in volume of securities offered (if the total dollar
             value of securities offered would not exceed that which was
             registered) and any deviation from the low or high end of the
             estimated maximum offering range may be reflected in the form
             of prospectus filed with the SEC pursuant to Rule 424(b) if,
             in the aggregate, the changes in volume and price represent no
             more than a 20% change in the maximum aggregate offering price
             set forth in the "Calculation of Registration Fee" table in
             the effective registration statement;

               (c)  To include any material information with respect to the
             plan of distribution not previously disclosed in the
             registration statement or any material change to such
             information in the registration statement.

             Provided, however, that paragraphs (a) and (b) above do not
          apply if the registration statement is on Form S-3, Form S-8 or
          Form F-3, and the information required to be included in a post-
          effective amendment by those paragraphs is contained in periodic
          reports filed with or furnished to the SEC by the registrant
          pursuant to section 13 or section 15(d) of the Exchange Act that
          are incorporated by reference in the registration statement.

             (2)  That, for the purpose of determining any liability under
          the Securities Act, each such post-effective amendment shall be
          deemed to be a new registration statement relating to the
          securities offered therein, and the offering of such securities
          at that time shall be deemed to be the initial bona fide offering
          thereof.

             (3)  To remove from registration by means of a post-effective
          amendment any of the securities being registered which remain
          unsold at the termination of the offering.

             (4)  That, for purposes of determining any liability under the
          Securities Act, each filing of the registrant's annual report
          pursuant to section 13(a) or section 15(d) of the Exchange Act
          that is incorporated by reference in the registration statement
          shall be deemed to be a new registration statement relating to
          the securities offered therein, and the offering of such
          securities at that time shall be deemed to be the initial bona
          fide offering thereof.


     <PAGE>


             (5) If the securities to be registered are to be offered at
          competitive bidding, the undersigned registrant hereby undertakes
          (i) to use best efforts to distribute prior to the opening of
          bids, to prospective bidders, underwriters, and dealers, a
          reasonable number of copies of a prospectus which at that time
          meets the requirements of section 10(a) of the Securities Act,
          and relating to the securities offered at competitive bidding, as
          contained in the registration statement, together with any
          supplements thereto, and (ii) to file an amendment to the
          registration statement reflecting the results of bidding, the
          terms of the reoffering and related matters to the extent
          required by the applicable form, not later than the first use,
          authorized by the issuer after the opening of bids, of a
          prospectus relating to the securities offered at competitive
          bidding, unless no further public offering of such securities by
          the issuer and no reoffering of such securities by the purchasers
          is proposed to be made.


     <PAGE>

                                  POWER OF ATTORNEY

             Each director and/or officer of the registrant whose signature
          appears below hereby appoints the Agents for Service named in
          this registration statement, and each of them severally, as
          his/her attorney-in-fact to sign in his/her name and behalf, in
          any and all capacities stated below, and to file with the
          Securities and Exchange Commission, any and all amendments,
          including post-effective amendments, to this registration
          statement, and the registrant hereby also appoints each such
          Agent for Service as its attorney-in-fact with like authority to
          sign and file any such amendment in its name and behalf.


     <PAGE>

                                      SIGNATURES

             Pursuant to the requirements of the Securities Act, the
          registrant certifies that it has reasonable grounds to believe
          that it meets all of the requirements for filing on Form S-3 and
          has duly caused this registration statement to be signed on its
          behalf by the undersigned, thereunto duly authorized, in the City
          of Bismarck, State of North Dakota on the 25th day of March,
          1998.

                                            MDU RESOURCES GROUP, INC.


                                            By: /s/ Harold J. Mellen, Jr.
                                               ----------------------------
                                               Harold J. Mellen, Jr.
                                               President and Chief
                                               Executive Officer

            Pursuant to the requirements of the Securities Act, this
          registration statement has been signed by the following persons
          in the capacities and on the dates indicated.

                 Signature                    Title                Date
                 ---------                    -----                ----

        /s/ Harold J. Mellen, Jr.      Chief Executive         March 25, 1998
        -------------------------      Officer and Director
        Harold J. Mellen, Jr.

        /s/ Douglas C. Kane            Chief Administrative    March 25, 1998
        -------------------------      and Corporate
        Douglas C. Kane                Development Officer
                                       and Director

        /s/ Warren L. Robinson         Chief Financial         March 25, 1998
        -------------------------      Officer
        Warren L. Robinson

        /s/ Vernon A. Raile            Chief Accounting        March 25, 1998
        -------------------------      Officer
        Vernon A. Raile
        

        /s/ John A. Schuchart          Director                March 25, 1998
        -------------------------
        John A. Schuchart
        (Chairman of the Board)

        /s/ San W. Orr, Jr.            Director                March 25, 1998
        -------------------------
        San W. Orr, Jr.
        (Vice Chairman of the Board)

        /s/ Thomas Everist             Director                March 25, 1998
        -------------------------
        Thomas Everist

        /s/ Richard L. Muus            Director                March 25, 1998
        -------------------------
        Richard L. Muus



     <PAGE>


             Signature                       Title                Date
             ---------                       -----                ----


        /s/ Robert L. Nance                 Director           March 25, 1998
        -------------------------
        Robert L. Nance

        /s/ John L. Olson                   Director           March 25, 1998
        -------------------------
        John L. Olson

        /s/ Harry J. Pearce                 Director           March 25, 1998
        -------------------------
        Harry J. Pearce

        /s/ Homer A. Scott, Jr.             Director           March 25, 1998
        -------------------------
        Homer A. Scott, Jr.

        /s/ Joseph T. Simmons               Director           March 25, 1998
        -------------------------
        Joseph T. Simmons

        /s/ Sister Thomas Welder, O.S.B.    Director           March 25, 1998
        --------------------------------
        Sister Thomas Welder, O.S.B.



     <PAGE>

                                    EXHIBIT INDEX


     **1     Form of Underwriting Agreement.

     *4(a)   Restated Certificate of Incorporation of the Company, as amended to
             date (filed as Exhibit 3(a) to Form 10-K for the year ended
             December 31, 1994, in File No. 1-3480).

     *4(b)   Bylaws of the Company, as amended to date (filed as Exhibit 3(b) to
             Form 10-K for the year ended December 31, 1997, in File No. 1-
             3480).

     *4(c)   Indenture of Mortgage, dated as of May 1, 1939, as restated in the
             Forty-fifth Supplemental Indenture, dated as of April 21, 1992,
             between the Company and The New York Trust Company (The Bank of New
             York, successor Corporate Trustee) and A.C. Downing (W.T.
             Cunningham, successor Co-Trustee) (filed as Exhibit 4(a) in
             Registration No. 33-66682).

     *4(d)   Forty-sixth, Forty-seventh and Forty-eighth Supplements to the
             Indenture of Mortgage between the Company and The New York Trust
             Company (The Bank of New York, successor Corporate Trustee) and
             A.C. Downing (W.T. Cunningham, successor Co-Trustee) (filed as
             Exhibits 4(e), 4(f) and 4(g), respectively, in Registration No. 33-
             53896).

     *4(e)   Rights Agreement, dated as of November 3, 1988, between the Company
             and Norwest Bank Minnesota, N.A., Rights Agent, (filed as Exhibit
             4(c) in Registration No. 33-66682).

     5(a)    Opinion of Lester H. Loble, II, Esq., General Counsel to the
             Company.

     5(b)    Opinion of Reid & Priest LLP, counsel to the Company.

     23(a)   Consent of Arthur Andersen LLP.

     23(b)   Consent of Ralph E. Davis Associates, Inc.

     23(c)   Consent of Weir International Mining Consultants.

     23(d)   The consents of Lester H. Loble, II, Esq. and Reid & Priest LLP are
             contained in their opinions filed as Exhibit 5(a) and Exhibit 5(b),
             respectively, to this Registration Statement.

     24      Power of Attorney is contained on page II-7 of this Registration
             Statement.

     --------------

     * Incorporated herein by reference as indicated.
     ** To be filed by Form 8-K.




                                                           EXHIBIT 5(A)


                                          March 25, 1998

MDU Resources Group, Inc.
Schuchart Building
918 East Divide Avenue
P.O. Box 5650
Bismarck, ND  58506-5650

Ladies and Gentlemen:

          With reference to the Registration Statement on Form S-3 to
be filed on or about the date hereof with the Securities and Exchange
Commission by MDU Resources Group, Inc. (the "Company") under the
Securities Act of 1933, as amended (the "Act"), contemplating the
issuance and sale, from time to time, of up to 3,400,000 additional
shares of its Common Stock, par value $3.33 per share (the "New
Stock") and the Preference Share Purchase Rights attached thereto (the
"Rights"), of which 1,230,932 shares will be sold by certain selling
shareholders and 2,169,068 of which shares will be sold by the
Company, it is my opinion that:

          1.    The Company is a corporation validly organized and
existing under the laws of the state of Delaware and is duly qualified
to do business as a foreign corporation in the states of Montana,
North Dakota, South Dakota and Wyoming.

          2.    When

               (a)  appropriate authorizations by the Federal Energy
                    Regulatory Commission, the Montana Public Service
                    Commission and the Public Service Commission of
                    Wyoming with respect to the issuance and sale by
                    the Company of the New Stock shall have been
                    granted;

               (b)  the Company's said Registration Statement on Form
                    S-3 shall have become effective;

               (c)  the Company's Board of Directors or a duly
                    authorized committee thereof shall have approved
                    the issuance and sale of the New Stock by the
                    Company; and

               (d)  the New Stock shall have been duly issued and
                    delivered by the Company for the consideration set
                    forth in the aforesaid Registration Statement and
                    in accordance with the actions hereinabove
                    mentioned,

the New Stock will be validly issued, fully paid and non-assessable.

          3.    The Rights, when issued as contemplated by the
Registration Statement, will be validly issued.

          I am a member of the North Dakota and Montana Bars and do
not hold myself out as an expert on the laws of any other state.
Except as set forth in paragraph 2(a) above, my opinions expressed
above are limited to the law of the states of North Dakota and
Montana, the General Corporation Law of the state of Delaware, and the
Federal laws of the United States.

          I hereby consent to the use of this opinion as an exhibit to
the Registration Statement and to the use of my name therein.

                                    Very truly yours,


                                    /s/ Lester H. Loble, II
                                    -----------------------------
                                    Lester H. Loble, II
                                    General Counsel
                                    and Secretary





                                                           Exhibit 5(b)

                        REID & PRIEST LLP
                       40 West 57th Street
                       New York, NY  10019



                                          March 25, 1998



MDU Resources Group, Inc.
Schuchart Building
918 East Divide Avenue
P.O. Box 5650
Bismarck, North Dakota 58506-5650


Ladies and Gentlemen:

          With reference to the Registration Statement on Form S-3 to
be filed on or about the date hereof with the Securities and Exchange
Commission (the "SEC") by MDU Resources Group, Inc. (the "Company")
under the Securities Act of 1933, as amended (the "Act"),
contemplating the issuance and sale, from time to time, of up to
3,400,000 additional shares of its Common Stock, par value $3.33 per
share (the "New Stock") and the Preference Share Purchase Rights
attached thereto (the "Rights"), of which 1,230,932 shares will be
sold by certain selling shareholders and 2,169,068 of which shares
will be sold by the Company, we are of the opinion that:

          1.   When

          (a)  the Registration Statement shall have become
               effective;

          (b)  appropriate authorizations by the Federal Energy
               Regulatory Commission, the Montana Public Service
               Commission and the Public Service Commission of
               Wyoming with respect to the issuance and sale of
               the New Stock by the Company shall have been
               granted;

          (c)  the Company's Board of Directors or a duly
               authorized committee thereof shall have approved
               the issuance and sale of the New Stock by the
               Company; and


<PAGE>


MDU Resources Group, Inc.
March 25, 1998
Page 2


          (d)  the New Stock shall have been duly issued and
               delivered by the Company for the consideration set
               forth in the aforesaid Registration Statement and
               in accordance with the actions hereinabove
               mentioned,

the New Stock will be validly issued, fully paid and non-assessable.

          2.   The Rights, when issued as contemplated by the
Registration Statement, will be validly issued.

          We are members of the New York Bar and do not hold ourselves
out as experts on the laws of any other state. Our opinions expressed
above are limited to the law of the State of New York, the General
Corporation Law of the State of Delaware and the Federal laws of the
United States. As to all matters of Montana, North Dakota, South
Dakota and Wyoming law, we have relied upon the opinion to you of even
date herewith of Lester H. Loble, II, Esq., Bismarck, North Dakota,
the Company's General Counsel, which opinion is to be filed as an
exhibit to the Registration Statement.

          We hereby consent to the use of this opinion as an exhibit
to the Registration Statement and to the use of our name, as counsel,
therein. In giving the foregoing consent, we do not thereby admit that
we belong to the category of persons whose consent is required under
Section 7 of the Act, or the rules and regulations promulgated by the
SEC thereunder.


                                Very truly yours,

                                /s/ Reid & Priest LLP
                                ----------------------------
                                REID & PRIEST LLP






                                                                Exhibit 23(a)


                      CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS



          As independent public accountants, we hereby consent to the
     incorporation by reference in this registration statement of our report
     dated January 22, 1998 incorporated by reference in the MDU Resources
     Group, Inc. Annual Report on Form 10-K for the year ended December 31,
     1997 and to all references to our Firm included in this registration
     statement.

                                                /s/ Arthur Andersen LLP

                                                ARTHUR ANDERSEN LLP



     Minneapolis, Minnesota
     March 25, 1998




                                                                Exhibit 23(b)

                                 CONSENT OF ENGINEER

          We hereby consent to the incorporation by reference in this
     registration statement of our reports, each dated January 12, 1998, which
     appear in the MDU Resources Group, Inc. Annual Report on Form 10-K for the
     year ended December 31, 1997 and to all references to Ralph E. Davis
     Associates, Inc. in this registration statement.


     RALPH E. DAVIS ASSOCIATES INC.

     /s/ Joseph Mustacchia, Jr.
     Executive Vice-President

     Houston, Texas
     March 25, 1998




                                                                Exhibit 23(c)

                                 CONSENT OF ENGINEER

          We hereby consent to the incorporation by reference in this
     registration statement of 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 and to all references to Weir International Mining
     Consultants in this registration statement.


     WEIR INTERNATIONAL MINING CONSULTANTS

     /s/ Kenneth J. Ginnard                 
     ---------------------------------------
     Kenneth J. Ginnard, Chief Geologist

     Des Plaines, Illinois
     March 25, 1998






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