Document:

MDU RESOURCES GROUP, INC.

              1992 KEY EMPLOYEE STOCK OPTION PLAN

                            (KESOP)

I.   Purpose

The purpose of the MDU Resources Group, Inc. 1992 Key Employee
Stock Option Plan (the "Plan") is to motivate key employees of
MDU Resources Group, Inc. and its business units to achieve
specified long-term performance goals of MDU Resources Group,
Inc. or its business units and to encourage ownership by them of
the Common Stock of MDU Resources Group, Inc.  The Plan
accomplishes these objectives through the grant of performance
accelerated Stock Options and the opportunity to earn dividend
equivalents.

II.  Definitions

The following definitions shall be used for purposes of
administering the Plan:

     "Agreement" means a written agreement evidencing each award
     of Options, which shall contain such terms and be in such
     form as the Compensation Committee may determine.

     "Board" means the Board of Directors of the Company.

     "Cause" means the (1) continued failure by a Participant to
     perform his/her duties (except as a direct result of the
     Participant's Disability) after receiving notification by
     the Chief Executive Officer of the Company or an individual
     designated by the Chief Executive Officer (or the Board of
     Directors of the Company in the case of the Chief Executive
     Officer) identifying the manner in which the Participant has
     failed to perform his/her duties, (2) engaging in conduct,
     which, in the opinion of a majority of the Board of
     Directors of the Company or a business unit, is materially
     injurious to the Company, or (3) conviction of any felony.

     "Change of Control" means the earliest of the following to
     occur:  (a) the public announcement by the Company or by any
     person (which shall not include the Company, any subsidiary
     of the Company, or any employee benefit plan of the Company
     or of any subsidiary of the Company) ("Person") that such
     Person, who or which, together with all Affiliates and
     Associates (within the meanings ascribed to such terms in
     the Rule 12b-2 of the General Rules and Regulations under
     the Exchange Act) of such Person, shall be the beneficial
     owner of twenty percent (20%) or more of the voting stock of
     the Company outstanding; (b) the commencement of, or after
     the first public announcement of any Person to commence, a
     tender or exchange offer the consummation of which would
     result in any Person becoming the beneficial owner of voting
     stock aggregating thirty percent (30%) or more of the then
     outstanding voting stock of the Company; (c) the
     announcement of any transaction relating to the Company
     required to be described pursuant to the requirements of
     Item 6(e) of Schedule 14A of Regulation 14A under the
     Exchange Act; (d) a proposed change in constituency of the
     Board such that, during any period of two (2) consecutive
     years, individuals who at the beginning of such period
     constitute the Board cease for any reason to constitute at
     least a majority thereof, unless the election or nomination
     for election by the stockholders of the Company of each new
     Director was approved by a vote of at least two-thirds (2/3)
     of the Directors then still in office who were members of
     the Board at the beginning of the period; or (e) any other
     event which shall be deemed by a majority of the
     Compensation Committee to constitute a "change in control."

     "Common Stock" means the Common Stock, $1.00 par value, of
     the Company.

     "Company" shall refer to MDU Resources Group, Inc.

     "Companies" shall refer to MDU Resources Group, Inc. and its
     business units.

     "Compensation Committee" or "Committee" shall be the
     Compensation Committee of the Board of Directors of the
     Company or any Committee of the Board performing similar
     functions as appointed from time to time by the Board.

     "Covered Employee" means any Participant who would be
     considered a "Covered Employee" for purposes of
     Section 162(m) of the Internal Revenue Code of 1986, as
     amended.

     "Disability" means the inability of a Participant to perform
     each and every duty pertaining to the Participant's regular
     occupation by reason of any medically determinable physical
     or mental impairment which can be expected to result in
     death or which has lasted or can be expected to last for a
     continuous period of not less than twelve months.

     "Dividend Account" is defined in Section IV.D 6.

     "Effective Date" means the date as of which the Plan is
     approved by the stockholders of MDU Resources Group, Inc.

     "Eligible Employee" means any key employee of any of the
     Companies who, in the opinion of the Compensation Committee,
     has significant responsibility for the continued growth,
     development and financial success of the Company or any
     business unit thereof.

     "Exchange" means the New York Stock Exchange.

     "Exchange Act" means the Securities Exchange Act of 1934, as
     amended.

     "Fair Market Value" means the average of the high and low
     prices for shares of Common Stock traded on the Exchange on
     the date of the grant of such Option or if no shares are
     traded on that day, on the next preceding day on which
     Common Stock was traded on the Exchange.

     "Goals" means the performance goals established by the
     Committee, which shall be based on one or more of the
     following measures:  sales or revenues, earnings per share,
     shareholder return and/or value, funds from operations,
     operating income, gross income, net income, cash flow,
     return on equity, return on capital, earnings before
     interest, operating ratios, stock price, customer
     satisfaction, accomplishment of mergers, acquisitions,
     dispositions or similar extraordinary business transactions,
     profit returns and margins, financial return ratios and/or
     market performance.  Performance goals may be measured
     solely on a corporate, subsidiary or business unit basis, or
     a combination thereof.  Performance goals may reflect
     absolute entity performance or a relative comparison of
     entity performance to the performance of a peer group of
     entities or other external measure.

     "Option" or "Stock Option" means an option to purchase
     Common Stock granted pursuant to the Plan.  Options may not
     be "incentive stock options" as that term is defined in
     Section 422 of the Internal Revenue Code of 1986, as
     amended.

     "Participants" means those Eligible Employees selected by
     the Committee for participation in the Plan and includes
     their beneficiaries as applicable.

     "Performance Cycle" means a time frame established by the
     Committee pursuant to Section IV.D 4 for the measurement of
     Goals.

     "Plan" means this MDU Resources Group, Inc. 1992 Key
     Employee Stock Option Plan, adopted by the Board on February
     13, 1992, and approved by the stockholders on April 28,
     1992, and as amended from time to time.

     "Termination of Service" means leaving the employ of the
     Companies for any reason.  Transfer between Companies is not
     a Termination of Service.

     "Trustee" means a trustee chosen by the Committee or any
     successor trustee selected by the Committee.

III. Administration

Subject to and not inconsistent with the express provisions of
the Plan the Committee has the sole and complete discretion to
administer and interpret the Plan, including, but not limited to:

     (a)  designating the Participants to whom Options are
     granted under the Plan;

     (b)  authorizing the Trustee to grant Options, determining
     the time(s) when Options are granted and fixing the number
     of shares of Common Stock underlying each Option granted
     hereunder;

     (c)  determining the terms and conditions of an Option
     granted (including, but not limited to, the exercise price,
     any restriction or limitation, the vesting provisions,
     acceleration of vesting or forfeiture waiver applicable to
     any Option) and the terms of the related Agreement;

     (d)  determining the conditions of the awarding of Dividend
     Equivalents;

     (e)  establishing Goals and fixing and adjusting the Goals;

     (f)  interpreting the terms and provisions of the Plan;

     (g)  adopting, amending, and rescinding rules and
     regulations relating to the Plan; and

     (h)  making all determinations necessary or advisable for
     the administration of the Plan.

All decisions made by the Committee pursuant to the provisions of
the Plan shall be final and binding on all persons, including the
Companies, the Trustee, and the Plan's Participants.

The Committee may also revise or adjust the vesting provisions
(except that the Committee may not extend vesting beyond nine
years), Goals and their levels applicable to a Performance Cycle,
at any time to take into account, among other things, new
Participants, promotions, transfers, terminations, changes in law
and accounting and tax rules and to make such adjustments as the
Committee deems necessary or appropriate to reflect the
Companies' performances or the impact of extraordinary or unusual
items, events, or circumstances or in order to avoid windfalls or
hardships.

The Company and/or the Committee may consult with legal counsel,
who may be counsel for the Company or other counsel, with respect
to its obligations and duties hereunder or with respect to any
claim, action, or proceeding or any other matter.

No member or agent of the Committee shall be personally liable
for any action, determination, or interpretation made in good
faith with respect to the Plan or grants made hereunder, and all
members and agents of the Committee shall be fully protected by
the Company in respect of any such action, determination, or
interpretation.

The Committee's determination under the Plan, including without
limitation, determinations as to the Participants to receive
grants, the terms and provisions of such grants and the
Agreement(s) evidencing the same, need not be uniform and may be
made by it selectively among the Eligible Employees who receive
or are eligible to receive grants under the Plan, whether or not
such Eligible Employees are similarly situated.

IV.  General Plan Description

     A.   Overview
     The Plan provides for each Participant to (a) receive
     grant(s) of Stock Options, (b) have the opportunity to earn
     dividend equivalents, and (c) have the opportunity to
     achieve accelerated vesting of Stock Options and receive
     additional grants of Stock Options based upon the
     achievement of Goals established by the Committee over a
     designated Performance Cycle.

     B.   Eligibility
     On or after the Effective Date, subject to the provisions of
     the Plan, the Committee shall, from time to time, select
     from eligible employees Participants to whom options are to
     be granted.  At the time of selection, the Committee shall
     specify the terms and conditions of the Participant's grant
     of Options.

     C.   Authorization
     The total number of shares of Common Stock as to which
     Options may be granted may not exceed 800,000 shares; if any
     unexercised options lapse or terminate for any reason, the
     shares underlying the Options may be made subject to Options
     granted to other Participants.  In the event of the
     declaration of a Common Stock dividend and/or Common Stock
     split, reclassification or analogous change in the
     capitalization or any distributions (other than regular cash
     dividends) to holders of record of Common Stock, an
     appropriate adjustment shall be made to the total number of
     shares as to which Options may be granted under the Plan to
     any Participant, to the number of shares subject to Options,
     and to the exercise price.

     Shares of Common Stock delivered under this Plan may be
     authorized but unissued shares of Common Stock, treasury
     stock, shares of Common Stock purchased on the open market
     and held by the Trustee, or shares of Common Stock from the
     1983 Key Employees' Stock Option Plan.

     D.   Individual Limitations
     Subject to adjustment as provided in Section IV(C), the
     total number of shares of Common Stock with respect to which
     Options may be granted in any calendar year to any Covered
     Employee shall not exceed 150,000 shares, and the aggregate
     number of dividend equivalents that a Covered Employee may
     receive in any calendar year shall not exceed $1,500,000.

     E.   Stock Options and Dividend Equivalents

     (1)  Grants
     Each Participant shall receive a grant of Options on the
     date she or he becomes a Participant.  The Committee shall
     determine the size of the grant to each Participant.
     Participants may receive subsequent grants of Options when
     and as directed by the Committee.

     (2)  Exercise Price and Term
     The exercise price for an Option granted under the Plan is
     the Fair Market Value of the Company's Common Stock on the
     date of the Option grant.  An Option granted shall generally
     have a term of ten years commencing from the date of grant,
     subject to the provisions of Sections V and VI and to the
     general discretion of the Committee set forth in Section III.

     (3)  Vesting and Accelerated Vesting Provisions
     No Option may be exercised before it has vested.  Generally
     Option grants have a vesting period (before accelerated
     vesting) of nine years subject to the provisions of Section
     VI and to the general discretion of the Committee set forth
     in Section III.  The vesting period for all or a portion of
     Options granted to a Participant may be accelerated by the
     Committee subject to the achievement of Goals for a
     Performance Cycle.

     (4)  Performance Cycle and Goals
     The Committee shall fix the starting and ending dates of
     each Performance Cycle.  The minimum term shall be six
     months; the maximum term shall be nine years.  A Performance
     Cycle will be the time period used in assessing the
     performance of each of the Companies in comparison to the
     separate Goals established by the Committee for each of the
     Companies.  Performance Cycles and Goals may vary for each
     of the Companies.

     (5)  Subsequent Grants; Accelerated Vesting
     Additional grants of Options may be made to Participants at
     any time.  In particular, but not by way of limitation,
     additional grants of Options may be made to Participants at
     the beginning of a new Performance Cycle based upon the
     appropriate Companies' achievement of Goals and the results
     of accelerated vesting of all or a portion of previous
     grants.  The Committee will have the authority to determine
     the size and terms of any new Option grant for each
     Participant.

     (6)  Dividend Equivalents
     At the beginning of each Performance Cycle, a Dividend
     Account (the "Dividend Account") shall be established for
     each Participant.  If a dividend is declared by the Board on
     the Common Stock of the Company an equivalent amount shall
     be accrued in the Dividend Account of each Participant for
     each share of Common Stock underlying all unvested Options
     held by the Participant.  At the end of each Performance
     Cycle the Committee in its sole discretion may award an
     amount between 0 percent and 150 percent of a Participant's
     Dividend Account based on whether the Goals established for
     that Performance Cycle were achieved.  Any earned portion of
     a Participant's Dividend Account is paid in cash to that
     Participant at the end of each Performance Cycle at a date
     and time determined by the Committee.  Any portion of a
     Participant's Dividend Account not awarded to the
     Participant by the Committee is forfeited.  However, shares
     of Common Stock underlying unvested Options retain a
     dividend equivalent and a Participant can earn the value of
     these dividend equivalents in subsequent Performance Cycles.

     (7)  Exercise of Options
     As provided in paragraph (3) of this section, generally all
     Options granted to a Participant under the Plan shall vest
     on the ninth anniversary of the date of grant; provided,
     however, that if and to the extent the vesting of an Option
     is accelerated at the end of a Performance Cycle, the Option
     may thereafter be exercised to the extent that the Option
     has vested. Any vested Option may be exercised from time to
     time in part or as a whole, at the discretion of the
     Participant, from the date of vesting until termination of
     the Option; no Option shall be exercisable after its
     expiration date; subject in either case to the provisions
     set forth in Section V and to the general discretion of the
     Committee set forth in Section III.

     Options may be exercised by giving written notice of
     exercise as directed by the Company specifying the number of
     shares to be purchased.  The notice shall be accompanied by
     provision for payment of the exercise price.  Payment may be
     made in part or in full in cash or by tendering shares of
     Common Stock already owned by the Participant, based upon
     the Fair Market Value of the Common Stock on the date the
     Option is exercised, or through share withholding.
     Participants may also simultaneously exercise Options and
     sell the shares of Common Stock thereby acquired and use the
     proceeds from the sale as payment for the purchase price of
     the shares.

     (8)  Nonassignability of Options
     Options granted may not be assigned, transferred, or pledged
     by the Participant other than by will or the laws of descent
     and distribution or pursuant to a domestic relations order.

V.   Termination of Service

     A.   Except as set forth below, upon any Termination of
     Service, unvested Options and any amounts accrued in a
     Participant's Dividend Account shall be forfeited unless the
     Committee decides otherwise pursuant to Section III. If a
     Participant terminates employment with the Company pursuant
     to Section 5.01 of the Company's Bylaws which provides for
     mandatory retirement for certain officers on their 65th
     birthday (or terminates employment with a subsidiary of the
     Company pursuant to a similar subsidiary Bylaw provision)
     and the Participant's 65th birthday occurs (i) during the
     first year of the then current Performance Cycle, all
     unvested Options and related Dividend Equivalents shall be
     forfeited; (ii) during the second year of the then current
     Performance Cycle, determination of whether the Goals have
     been met for the Performance Cycle will be made by the
     Committee at the end of the Performance Cycle, and to the
     extent met, the Options and related Dividend Equivalents
     will vest based on the percentile achieved, prorated based
     upon the number of full months elapsed from and including
     the month in which the current Performance Cycle began to
     and including the month in which the Participant's 65th
     birthday occurs; and (iii) during the third year of the then
     current Performance Cycle, determination of whether the
     Goals have been met for the Performance Cycle will be made
     by the Committee at the end of the Performance Cycle, and to
     the extent met, the Options and related Dividend Equivalents
     will vest based on the percentile achieved (without
     proration).  Options that are vested shall remain
     exercisable for the period specified in Section V.E. below.
     Options and related Dividend Equivalents that do not vest in
     accordance with the above provisions shall be forfeited.

     B.   Death
     If the Participant dies while still employed, then any
     vested Options, to the extent that they are then
     exercisable, may be fully exercised at any time within one
     (1) year (even if this extends the term of the Options)
     after the date of the Participant's death by the person
     designated in the Participant's last will and testament or
     by the personal representative of the Participant's estate.

     C.   Disability
     If the Participant suffers Disability, then any vested
     Options, to the extent that they are then exercisable, may
     be fully exercised at any time within one (1) year (even if
     this extends the terms of the Options) after the date of
     Disability by the Participant or by a person qualified or
     authorized to act on behalf of the Participant.

     D.   Cause
     If a Participant's Termination of Service is for Cause, the
     right to exercise any vested Option shall terminate with
     such termination of employment.  For this purpose, the
     determination of the Committee as to whether employment was
     terminated for Cause shall be final.

     E.  Other Termination of Service
     Except as set forth in the next sentence, in the event of
     the Participant's Termination of Service for reasons other
     than Death, Disability, or Cause, to the extent that any
     vested Options are then exercisable, the Participant shall
     be entitled to exercise the Options for the three (3) month
     period following such Termination of Service (even if this
     extends the term of the Options).

     In the event of the Participant's Termination of Service
     because of retirement at age 65 pursuant to Section 5.01 of
     the Company's Bylaws, the Participant shall be entitled to
     exercise Options that have vested or do vest in accordance
     with Section V.A. above for the three (3) month period
     following the later of (i) the date of vesting of the
     Options and (ii) the date of such Termination of Service
     (even if this extends the term of the Options).

VI.  Change of Control

Upon a Change of Control of the Company, all Options previously
granted under the Plan shall become immediately vested and
available for exercise.  The value of the amounts accrued in the
Participant's Dividend Account shall be paid in full at
100 percent of the amount thereof to the Participant in cash upon
the Change of Control.

VII. Miscellaneous Provisions

     A.   Unsecured General Creditor
     Participants and their beneficiaries, heirs,
     successors, and assigns shall have no legal or
     equitable rights, interests, or other claims in any
     property or assets of the Company, nor shall they be
     beneficiaries of, or have any rights, claims, or
     interests in any specified assets of the Company.  Any
     and all of the Company's assets shall be and remain
     general, unpledged, unrestricted assets of the Company.
     The Company's obligation under the Plan shall be that
     of an unfunded and unsecured promise of the Company to
     cause shares of Common Stock to be available or to pay
     benefits in the future.

     B.   No Contract of Employment
     Nothing contained in this Plan nor any related
     Agreement nor any action taken in the administration of
     the Plan shall be construed as a contract of employment
     or as giving a Participant any right to be retained in
     the service of the Company.

     C.   Withholding Taxes
     No later than the date on which a Participant receives
     Common Stock with respect to any Option exercised or
     cash with respect to Dividend Equivalents awarded under
     the Plan, the Participant shall pay in cash to the
     Company or its delegate or make arrangements
     satisfactory to the Company regarding the payment of
     any federal, state, or local taxes required by law to
     be withheld with respect to any such amounts.  The
     Participant may also make payment (i) by tendering
     shares of the Common Stock already owned by the
     Participant, based on the fair market value of the
     Common Stock on the date the tax is owed or (ii) by
     having such amounts withheld from the shares of the
     Common Stock otherwise distributable to him/her upon
     exercise of his/her Options.  The obligations of the
     Company under the Plan shall be conditioned on such
     payment or arrangements.  The Company or its delegate
     may deduct any taxes from any payment due to the
     Participant from the Company to the extent allowed by
     law.

     D.   Ten Percent Limitation
     No Option shall be granted under this Plan to a
     Participant if at the time the Option is granted the
     Participant shall own stock representing more than
     10 percent of the combined voting power of all classes
     of voting stock of the Company.

     E.   Severability
     In the event that any provision of the Plan or any
     related Agreement is held invalid, void or
     unenforceable, the same shall not affect, in any
     respect whatsoever, the validity of any other provision
     of the Plan or any related Agreement.

     F.   Inurement of Rights and Obligations
     The rights and obligations under the Plan shall inure
     to the benefit of, and shall be binding upon the
     Company, its successors and assigns, and the
     Participants and their beneficiaries consistent with
     the terms of the Plan.

     G.   Amendments
     The Board may at any time amend, suspend, or terminate
     the Plan including, without limitation, modifications
     to take into account and comply with any changes in
     applicable securities or federal income tax laws and
     regulations, or other applicable laws and regulations;
     provided, that no modification to the Plan shall
     increase the number of shares available under the Plan
     by more than 10 percent without approval of the holders
     of the Common Stock, except as otherwise permitted
     under Section IV.C; and provided further, that any such
     amendment, suspension, or termination must be
     prospective in that it may not deprive Participants of
     any Options or rights previously granted under the Plan
     whether vested or not, without consent of the
     Participant, except if required by statute or rules or
     regulations promulgated thereunder.

     H.   Restrictions
     Shares of Common Stock acquired by Participants
     pursuant to the exercise of Options granted under the
     Plan shall be subject to such restrictions on
     transferability and disposition as are required by
     federal and state security laws and such Participants
     shall not sell or transfer any shares acquired except
     in accordance with such laws.

     I.   Legal and Other Requirements
     The obligation of the Company to cause Common Stock to
     be available under the Plan shall be subject to all
     applicable laws, regulations, rules and approvals,
     including, but not limited to the receipt of any
     necessary approvals by state or federal regulatory
     bodies, and the effectiveness of a registration
     statement under the Securities Act of 1933 if deemed
     necessary or appropriate by the Company.  Certificates
     for shares of Common Stock issued hereunder may be
     legended as the Committee shall deem appropriate.

     J.   Agreements
     Each grant of Options shall be evidenced by an
     Agreement which shall contain such restrictions, terms
     and conditions as the Committee may require.
     Notwithstanding anything to the contrary contained in
     the Plan, the Company shall not be under any obligation
     to honor any grants under the Plan to any Participant
     hereunder unless such Participant shall execute all
     appropriate Agreements with respect to such Options in
     such form as the Committee may determine from time to
     time.

     K.   Applicable Law
     The Plan and any related Agreements shall be governed
     in accordance with the laws of the State of North
     Dakota.

VIII. Establishment of Trust

The Company may establish with the Trustee a trust consisting of
such sums of money or other property acceptable to the Trustee as
shall from time to time be paid or delivered to the Trustee, all
investments made therewith and proceeds thereof and all earnings
and profits thereon.  The Trustee shall invest funds, if any,
advanced by the Company in shares of Common Stock.  Upon the
exercise of an Option by a Participant, the Trustee shall take
Common Stock from the trust or shall purchase Common Stock on the
open market or from the Company and deliver certificates for such
shares to the Participant.

The Company shall have the right at any time to terminate the
trust but such termination shall not affect the rights of any
Participant to whom an Option has been granted under the Plan.
After effecting all purchases and transfers of Common Stock as
are required by the Plan pursuant to the exercise of Options by
Participants, the Trustee shall be relieved of all further
liability.  Termination of the trust shall take effect as of the
date the last such transfer is made.  Upon such termination any
assets remaining in the trust shall be returned to the Company
unless other directions are given to the Trustee by the Company.MDU RESOURCES GROUP, INC.

                SUPPLEMENTAL INCOME SECURITY PLAN

       (As Amended and Restated Effective January 1, 2002)

                        TABLE OF CONTENTS

INTRODUCTION

ARTICLE I -- DEFINITIONS

ARTICLE II -- ELIGIBILITY

ARTICLE III -- SUPPLEMENTAL DEATH AND RETIREMENT BENEFITS

ARTICLE IV -- EXCESS RETIREMENT BENEFITS

ARTICLE V -- DISABILITY BENEFITS

ARTICLE VI -- MISCELLANEOUS

ARTICLE VII -- ADDITIONAL AFFILIATED COMPANIES

                          INTRODUCTION

          The objective of the MDU Resources Group, Inc.
Supplemental Income Security Plan (the "Plan") is to provide
certain levels of survivor benefits and retirement income for a
select group of management or highly compensated employees and
their families.  Eligibility for participation in this Plan shall
be limited to management or highly compensated employees who are
selected by the Chief Executive Officer of MDU Resources Group,
Inc. (the "Company").  This Plan became effective January 1,
1982, has been amended from time to time thereafter, and has been
amended and restated effective January 1, 2002.
          The Plan is intended to constitute an unfunded "excess
benefit plan" as defined in Section 3(36) of the Employee
Retirement Income Security Act of 1974, as amended ("ERISA"), to
the extent it provides benefits that would be paid under one or
more of the tax-qualified retirement plans of the Company or
certain of its subsidiaries but for certain limitations set forth
under the Internal Revenue Code of 1986, as amended (the "Code"),
and constitutes an unfunded plan of deferred compensation
maintained by the Company primarily for the purpose of provided
non-elective deferred compensation for a select group of
management or highly compensated employees.

                     ARTICLE I - DEFINITIONS

          Unless a different meaning is plainly implied by the
context, the following terms as used in this Plan shall have the
following meanings:
          1.1  "Administrator" means the Chief Executive Officer of the
Company or any other person to whom the Chief Executive Officer
of the Company has delegated the authority to administer the
Plan.  The Vice President Human Resources Department of the
Company is initially delegated the authority to perform the
administrative responsibilities required under the Plan.
          1.2  "Affiliated Company" means any current or future corporation
which (i) is in a controlled group of corporations (within the
meaning of Section 414(b) of the Code) of which the Company is a
member and (ii) has been approved by the Chief Executive Officer
of the Company to adopt the Plan for the benefit of its
Employees.
          1.3  "Beneficiary" means an individual or individuals, any entity
or entities (including corporations, partnerships, estates or
trusts) that shall be entitled to receive benefits payable
pursuant to the provisions of this Plan by virtue of a
Participant's death; provided, however, that if more than one
such person is designated as a Beneficiary hereunder, each such
person's proportionate share of the death benefit hereunder must
clearly be set forth in a written statement of the Participant
received by and filed with the Administration prior to the
Participant's death.  If such proportionate share for each
Beneficiary is not set forth in the designation, each Beneficiary
shall receive an equal share of the death benefits provided
hereunder.
          1.4  "Company" means MDU Resources Group, Inc., and its
successors, if any.
          1.5  "Effective Date" of the Plan means January 1, 1982.  The
Effective Date of this amendment and restatement of the Plan is
January 1, 2002.
          1.6  "Eligible Retirement Date" means the First Eligible
Retirement Date and the last day of each subsequent calendar
month.
          1.7  "Employee" means each person actively employed by an
Employer, as determined by such Employer in accordance with its
practices and procedures.
          1.8  "Employer" means the Company and any Affiliated Company
which shall adopt this Plan with respect to its Employees with
the prior approval of the Company as set forth in Article 7 of
the Plan.
          1.9  "First Eligible Retirement Date" for a Participant means the
last day of the month during which such Participant is both no
longer actively employed by any Employer and has attained at
least age 65.
          1.10 "Limitation on Benefits" shall mean the statutory limitation
on the maximum benefit that may be payable to participants under
a Pension Plan due to the application of certain provisions
contained in the Code.
          1.11 "Participant" means a present or former management or highly
compensated Employee selected by the Chief Executive Officer of
the Company to receive benefits under this Plan.  An Employee
will become a Participant at the time such Employee commences
participation hereunder pursuant to the provisions of Section 2.1
hereof.
          1.12 "Pension Plan" means the MDU Resources Group, Inc. Pension
Plan for Non-Bargaining Unit Employees, the Williston Basin
Interstate Pipeline Company Pension Plan for Non-Bargaining Unit
Employees, or the Knife River Corporation Salaried Employees'
Pension Plan, as in effect on the Effective Date and as amended
from time to time.
          1.13 "Plan" means the MDU Resources Group, Inc. Supplemental
Income Security Plan, as embodied herein, and any amendments
thereto.
          1.14 "Plan Year" means the calendar year.  The first Plan Year
for this Plan shall be the 1982 calendar year.
          1.15 "Salary" means annual base earnings payable by an Employer
to a Participant excluding (i) bonuses, (ii) incentive
compensation, and (iii) any other form of supplemental income.
          1.16 "Standard Actuarial Factors" means, with respect to a
Participant, the actuarial factors and assumptions commonly used
for the calculation of actuarial equivalents for retirement plans
as determined by the Administrator.
          1.17 "Standard Life Insurance" means life insurance that could be
purchased from a commercial life insurance company at standard
rates without a surcharge assessed, based on an individual's
general good health.
          1.18 "Standard Underwriting Factors" means life insurance rating
factors utilized by a commercial life insurance company selected
by the Chief Executive Officer of the Company which are based on
the risk assessment classifications utilized by such insurer to
determine if an applicant qualifies for insurance at standard
rates or if health or other factors might require a surcharge.
          1.19 "Year of Participation" means each 12 consecutive months of
participation in the Plan by a Participant while actively
employed by one or more of the Employers (including while such
Participant is qualified as totally disabled as defined in
Article V), as determined at the sole discretion of the
Administrator.

                    ARTICLE II - ELIGIBILITY

          2.1  Eligibility for Participation.  The Chief Executive Officer
of the Company shall determine which management or highly
compensated Employees may be eligible to participate in the Plan.
General criteria for initial consideration of an Employee
includes, but is not limited to, the following:  (A) either an
officer or a management employee of an employer earning a base
salary exceeding a threshold amount as determined by the Chief
Executive Officer of the Company; (B) an executive who makes a
significant contribution to the Company's success and
profitability; (C) an executive in a business unit where benefits
of this nature are a common practice, or there is a specific need
to recruit and retain key executives; and (D) the expectation
that the total active participation in the Plan will not exceed
four percent of the total employment of the Company and
Affiliated Companies.  Each Employee who is selected as eligible
to participate hereunder and who meets the requirements for
participation set forth under Section 2.2 hereof shall commence
participation of the first day of the month coincident with or
next following the date of such Employee's selection.
          2.2  Requirements for Participation.  In order to be eligible to
participate in the Plan, an Employee selected by the Chief
Executive Officer of the Company must (i) be actively at work for
one or more of the Employers; (ii) have a current state of health
and physical condition that would satisfy customary requirements
for insurability under Standard Life Insurance; provided,
however, that no provision of this Plan shall be construed or
interpreted to limit participation in the Plan in contravention
of the Americans With Disabilities Act and related federal an
state laws; and (iii) consent to supply information or to
otherwise cooperate as necessary to allow the Company to obtain
life insurance on behalf of such Employee (as set forth under
Section 6.3 of the Plan).
          2.3  Eligibility for Benefits.  Subject to the provisions of
Article III, Plan benefits may commence (i) as of the earlier to
occur of (A) the first day of the month following the date of the
Participant's death or (B) if the Participant who elects to
receive retirement benefits under Article III hereof, the
Participant's First Eligible Retirement Date, for purposes of the
benefits payable under Article III of the Plan.
          2.4  Relationship to Other Plans.  Participation in the Plan
shall not preclude or limit the participation of the Participant
in any other benefit plan sponsored by one or more of the
Employers for which such Participant otherwise would be eligible.
However, any benefits payable under this Plan shall not be deemed
salary or compensation to the Participant for purposes of
determining benefits under any other employee benefit plan
maintained by one or more of the Employers.
          2.5  Forfeiture of Benefits.  Notwithstanding any provision of
this Plan to the contrary, if any Participant is discharged from
employment by one or more of the Employers for cause due to
willful misconduct, dishonesty, or conviction of a crime or
felony, all as determined at the sole discretion of the Chief
Executive Officer of the Company the rights of such Participant
(or any Beneficiary of such Participant) to any present or future
benefit under this Plan shall be forfeited to the extent not
prohibited by applicable law.

    ARTICLE III -- SUPPLEMENTAL DEATH AND RETIREMENT BENEFITS
          3.1  Amount of Benefit.  (a)  Subject to the provisions of
Section 3.3 of the Plan, the monthly supplemental death and/or
retirement benefits payable on behalf of (or to) a Participant as
of such Participant's date of death (or First Eligible Retirement
Date) will be an amount determined at the sole discretion of the
Chief Executive Officer of the Company at the time of the
Participant's commencement of participation in the Plan, as may
be adjusted from time to time thereafter by the Chief Executive
Officer of the Company.  However, in no event will a Participant
be entitled to have a monthly supplemental death benefit paid on
such Participant's behalf (or be entitled to receive a monthly
supplemental retirement benefit) that exceeds the monthly death
benefit or monthly retirement benefit (as applicable)
corresponding to the Participant's Salary in effect at the date
such initial or revised benefit determination is to be effective,
all as set forth in the applicable Appendix hereto.  Benefits for
Participants shall be determined in accordance with Appendix A.
Changes in Salary do not automatically result in changes to a
Participant's level of benefits.
          (b)  Participants who died, terminated employment with, or
retired from, the Employers prior to January 1, 2002, will
receive benefits hereunder in accordance with the terms of the
Plan as in effect at the time of the Participant's death,
termination of employment or retirement from the Employers.
          (c)  The benefit amounts determined by the Chief Executive
Officer of the Company pursuant to Section (a) above are based on
the assumption that each Participant's health and physical
condition at the time of such Participant's commencement of
participation in the Plan meets customary requirements for
Standard Life Insurance.  Benefits under the Plan may be reduced
by the Chief Executive Officer of the Company within a reasonable
period following the establishment of such benefit level in
accordance with Standard Underwriting Factors, but only with
respect to that portion of the monthly death or retirement
benefit for which the criteria for health and physical condition
are not met.  Participants will be notified of any such reduction
within a reasonable period following participation in the Plan.
Once benefits have been reduced under this Section 3.1, such
benefits shall not be further reduced for the remainder of the
Participant's participation in the Plan.
          (d)  Participants who die while actively employed will be
considered to be 100% vested for the death benefit, and not
subject to the vesting schedule.  However, once the participant
is no longer actively employed (e.g. resignation, termination,
disability, etc.) section 3.2 applies.
          3.2  Vesting.  If a Participant retires or terminates employment
with an Employer before the Participant completes at least 10
years of Participation, the monthly death and/or retirement
benefits to which such Participant otherwise would be entitled
under the terms of Section 3.1 hereof shall vest as follows:

                               Vesting Schedule

             Years of Participation          Percent of Section
         Completed by the Participant       3.1 Benefits Payable

                         1                         0%
                         2                         0%
                         3                        20%
                         4                        40%
                         5                        50%
                         6                        60%
                         7                        70%
                         8                        80%
                         9                        90%
                         10                       100%

          3.3  Payment of Monthly Benefit.  Upon attainment of age 65 or,
as of such Participant's First Eligible Retirement Date (if
later), a Participant will be entitled to determine the form of
benefit payable under subsection (a) hereof, and the date of
commencement of such benefits, subject to the approval of the
Chief Executive Officer of the Company, in accordance with the
terms of the Plan.  The Participant may elect:
          (a) to defer any payments and retain a future monthly
     death benefit in amounts determined pursuant to Section 3.1
     hereof, multiplied by the appropriate percentage amount set
     forth in section 3.2, or
          (b) in lieu of any death benefits under this Plan a
     monthly retirement benefit determined in accordance with
     Section 3.1, multiplied by the appropriate percentage amount
     set forth in Section 3.2, with no death benefit, or
          (c) a percentage of each benefit described in
     subsections (and b) above.  The percentage of each benefit
     must be in even increments of ten percent (10%).
               (i) If a Participant has elected to receive less
               than one hundred percent (100%) of such
               Participant's monthly retirement benefit (e.g.
               50%), the Participant may subsequently elect to
               begin receiving an additional percentage
               retirement benefit (e.g. another 20%.) There may
               be no more than two (2) such additions during the
               Participant's lifetime, and no more than one (1)
               such addition during any calendar year.
               (ii) Any such addition in retirement benefit
               payments will result in an equal percentage
               reduction in death benefits, to the percentage
               change in retirement benefit.
               (iii.) Once retirement benefit payments have
               started, Participants shall not be entitled to
               subsequently decrease retirement benefit payments.
          (d) Elections under this Section 3.3 must be
     communicated in writing to the Administrator and will be
     effective as of the first day of the first month following
     the Administrator's receipt and the approval of such request
     by the Chief Executive Officer of the Company.
          3.4  Payment of Monthly Benefits.  (a)  Death Benefits.  Any
death benefits payable with respect to a Participant pursuant to
Sections 3.3(a)(b) or (c) shall commence on the first day of the
calendar month following the date of the Participant's death and
shall be payable in monthly installments for a period of 180
months.
          (b)  Retirement Benefits.  The monthly retirement benefits
payable under this Plan shall commence on the Eligible Retirement
Date selected by the Participant (upon 30 day's written notice to
the Administrator) and will be payable to such Participant in
monthly installments for a period of 180 months.  In the event
the Participant dies prior to the completion of such 180-month
period, the balance of such retirement benefits shall be paid to
the Participant's Beneficiary at such times and in such amounts
as if the Participant had not died, such payment being made in
addition to any death benefits payable under Sections 3.3(a)(i)
or (iii) hereof.  To the extent a Participant elects to commence
receiving increased retirement benefits pursuant to Section
3.3(b), the amount of increase of retirement benefits shall be in
the form of a monthly benefit payable for a separate 180-month
period.
          (c)  Actuarial Equivalent Alternative Forms.  The normal form of
retirement benefit to which a Participant shall be entitled shall
be determined under paragraph 3.4(b).  Alternatively, a
participant may elect to receive their Retirement Benefit in one
of the following actuarially equivalent forms (as determined by
the Administrator), provided however that each alternative form
shall also be payable for a certain period of 180 months:  (i)
The lifetime of the Participant; (ii) The lifetime of the
Participant with the same amount payable to the Participant
continued thereafter for the lifetime of the Participant's
spouse; or (iii) The lifetime of the Participant with 67% of the
amount payable to the Participant continued thereafter for the
lifetime of the Participant's spouse.
          (d)  Single Sum Payment.  Notwithstanding the provisions of
subsections (a) and (b) of this Section 3.4, the Chief Executive
Officer of the Company reserves the right to pay benefits in the
form of an actuarially equivalent single sum (as determined by
the Administrator) when retirement or death benefits are payable
due to termination of employment, excluding disability, or death
prior to the Participant's attainment of age 55, or upon the
death of the Participant and the primary beneficiary(ies).
          3.5  Exclusions and Limitations.  (a) No death benefits will be
payable with respect to a Participant in the event of such
Participant's death by suicide within two (2) years after
commencement of participation in the Plan, and no benefit
increase will apply in the event of any such Participant's death
by suicide within two (2) years after such Participant becomes
eligible for an increase in death benefits.
          (b)  In the event that a Participant misrepresents any health or
physical condition at the time of commencement of participation
in the Plan or at the time of a retirement or death benefit
increase, no retirement or death benefit or retirement or death
benefit increase will be payable under the Plan within two (2)
years of such misrepresentation.
          3.6  Death of a Beneficiary.  (a)  In the event any Beneficiary
predeceases the Participant, is not in existence, is not
ascertainable, or is not locatable (see Section 6.11) as of the
date benefits under the Plan become payable to such Beneficiary,
Plan benefits shall be paid to such contingent Beneficiary or
Beneficiaries as shall have been named by the Participant on the
Participant's most recent Beneficiary election form that has been
received and filed with the Administrator prior to the
Participant's death.  If no contingent Beneficiary has been
named, the contingent Beneficiary shall be the Participant's
estate.
          (b)  In the event any Beneficiary dies after commencing to
receive monthly benefits under the Plan but prior to the payment
of all monthly benefits to which such Beneficiary is entitled,
remaining benefits shall be paid to a beneficiary designated by
the deceased Beneficiary (the "Secondary Beneficiary"), provided
such designation has been received and filed with the
Administrator prior to the death of the Beneficiary.  If no such
person has been designated by the deceased Beneficiary, the
Secondary Beneficiary shall be the estate of the Beneficiary.  In
the even the Secondary Beneficiary shall die prior to the payment
of all benefits to which such Secondary Beneficiary is entitled,
the remainder of such payments shall be made to such Secondary
Beneficiary's estate.  If the Administrator is in doubt as to the
right of any person to receive benefits under the Plan, the
Administrator may retain such amount, without liability for any
interest thereon, until the rights thereto are determined, or the
Administrator may pay a single sum amount in accordance with
Section 3.4 (c) into any court of competent jurisdiction and such
payment shall be a complete discharge of the liability of the
Plan and the Employer therefor.
          3.7  Discretion As To Benefit Amount.  Notwithstanding the
foregoing, the Chief Executive Officer of the Company may, with
full and complete discretion, disregard Standard Underwriting
Factors and customary requirements for Standard Life Insurance in
establishing and/or increasing the amount of any Participant's
retirement or death benefit under the Plan.
          3.8  Suspension of Benefits Upon Reemployment.  Employment with
any Employer subsequent to the commencement of retirement
benefits under this Article III may, at the sole discretion of
the Chief Executive Officer of the Company, result in the
suspension of such benefits for the period of such employment or
reemployment.

          ARTICLE IV --  REPLACEMENT RETIREMENT BENEFITS

          4.1  Participation.  Benefits under this Article IV shall be
payable only to those Participants whose benefits, under a
Pension Plan under which they otherwise participate, commence
prior to such Participant's attainment of age 65 and are reduced
or limited by reason of the Limitation on Benefits.  Benefits
under this Article IV (a) shall be payable only for such period
that the benefits under the Pension Plan are actually reduced or
limited and (b) shall terminate as of the last day of the month
immediately preceding the month during which occurs the
Participant's sixty-fifth (65th) birthday.  Furthermore, benefits
under this Article IV also shall be payable only to those
Participants who are active Employees on or after January 1,
1997.
          4.2  Amount and Method of Payment.  (a)  Amount of Benefit.  The
amount, if any, of the monthly benefit payable to or on account
of a Participant pursuant to this Article IV shall equal the
difference of (i) minus (ii) where:
               (i)  equals the amount of monthly retirement benefits which would
                    be provided to the Participant under the Pension Plan
                    without regard to the Limitation of Benefits; and
               (ii) equals the amount of monthly retirement benefits payable to
                    such Participant under the Pension Plan due to the
                    application of the Limitation on Benefits;
provided, however, that no benefits shall be payable to a
Participant under this Article IV unless the amount of such
monthly benefit is at least fifty dollars ($50).  The benefit
amount provided under this Section 4.2(a) shall be determined
with reference to the form of benefit determined under section
4.2(c) hereof and shall be calculated in accordance with the
Standard Actuarial Factors utilized under the Pension Plan.
          (b)  Vesting.  A Participant shall be vested in benefits under
this Article IV to the same extent as such Participant is vested
in benefits under the applicable Pension Plan.
          (c)  Payment of Benefit.  The benefits provided under this
Article IV shall be paid to each such Participant, surviving
spouse (as defined under the applicable Pension Plan) or joint
annuitant (as defined under the applicable Pension Plan) at the
same time and in the same form and manner as benefits are payable
under the applicable Pension Plan.  Payments shall be made in
accordance with, and subject to, the terms and conditions of the
applicable Pension Plan; provided, however, that no spousal
consent shall be required to commence any form of payment under
this Article IV.
          (d)  Duration of Payments.  Subject to Section 4.2(c), benefits
provided under this Article IV shall commence at the same time as
payments commence under the applicable Pension Plan, and shall
continue to age 65 or the death of the Participant, if prior to
age 65, and, if applicable, in reduced amount until the death of
the Participant's spouse or joint annuitant, whichever is
applicable.
          (e)  Treatment During Subsequent Employment.  Employment with any
Employer subsequent to the commencement of benefits under this
Article IV may, at the sole discretion of the Chief Executive
Office of the Company, result in the suspension of such benefits
for the period of such employment or reemployment to the extent
set forth under the applicable Pension Plan.
          (f)  Necessity of Actual Reduction.  Notwithstanding any other
provision of this Plan, no amount shall be payable under this
Article IV unless the Participant's monthly benefit paid under
the applicable Pension Plan is actually reduced because of
application of the Limitation on Benefits.  Benefits payable to a
Participant under this Article IV shall not duplicate benefits
payable to such Participant from any other plan or arrangement of
the Company.  In the event a change in law or regulation
liberalizes the limitations applicable to determining the
Limitation on Benefits such that a Participant may receive
additional benefits under the applicable Pension Plan, and the
applicable Pension Plan provides for the payment of such
additional benefits to the Participant, the amount payable under
this Article IV shall be reduced by a corresponding amount.

                ARTICLE V -- DISABILITY BENEFITS

          5.1  Monthly Disability Benefit.  (a)  If a Participant becomes
totally disabled following commencement of participation in the
Plan, the Participant shall continue to receive credit for up to
2 years of Participation under the Plan for so long as the
Participant is totally disabled. Following termination of the
participant's employment with the Employer, the Participant's
monthly retirement benefits under Article III of the Plan shall
commence beginning on or after the Participant's First Eligible
Retirement Date.
          (b)  A Participant is "totally disabled" if such Participant is
disabled within the meaning of the applicable long-term
disability plan sponsored by such Participant's Employer, or as
determined by social security.
          (c)  If a Participant who is totally disabled dies before
attaining age 65, any death benefit payable to the Participant's
Beneficiary will be determined and paid in accordance with the
vesting schedule terms of Article III.

                   ARTICLE VI - MISCELLANEOUS

          6.1  Amendment and Termination.  Any action to amend, modify,
suspend or terminate the Plan may be taken at any time, and from
time to time, by resolution of the Board of Directors of the
Company (or any person or persons duly authorized by resolution
of the Board of Directors of the Company to take such action) in
its sole discretion and without the consent of any Participant or
Beneficiary, but no such action shall retroactively reduce any
benefits accrued by any Participant under this Plan prior to the
time of such action.
          6.2  No Guarantee of Employment.  Nothing contained herein shall
be construed as a contract of employment between a Participant
and any Employer or shall be deemed to give any Participant the
right to be retained in the employ of any Employer.
          6.3  Funding of Plan and Benefit Payments.  This Plan is unfunded
within the meaning of ERISA.  Each Employer will make Plan
benefit payments from its general assets.  Each Employer may
purchase policies of life insurance on the lives of Plan
Participants and to refuse participation in the Plan to any
Employee who, if requested to do so, declines to supply
information or to otherwise cooperate so that the Employer may
obtain life insurance on behalf of such Participant.  The
Employer will be the owner and the beneficiary of any such
policy, and Plan benefits will be neither limited to nor secured
by any such policy or its proceeds.  Participants and their
Beneficiaries shall have no right, title or interest in any such
life insurance policies, in any other assets of any Employer or
in any investments any Employer may make to assist it in meeting
its obligations under the Plan.  All such assets shall be solely
the property of such Employer and shall be subject to the claims
of such Employer's general creditors.  There are no assets of any
Employer that are identified or segregated for purposes of the
payment of any benefits under this Plan.  To the extent a
Participant or any other person acquires a right to receive
payments from an Employer under the Plan, such right shall be no
greater than the right of any unsecured general creditor of such
Employer and such person shall have only the unsecured promise of
the Employer that such payments shall be made.
          6.4  Payment Not Assignable.  Except in the case of a Qualified
Domestic Relations Order described under Code Section 414(p),
Participants and their Beneficiaries shall not have the right to
alienate, anticipate, commute, sell, assign, transfer, pledge,
encumber or otherwise convey the right to receive any payments
under the Plan, and any payments under the Plan or rights thereto
shall not be subject to the debts, liabilities, contracts,
engagements or torts of Participants or their Beneficiaries nor
to attachment, garnishment or execution, nor shall they be
transferable by operation of law in the event of bankruptcy or
insolvency.  Any attempt, whether voluntary or involuntary, to
effect any such action shall be null, void and of no effect.
          6.5  Applicable Law.  The Plan and all rights hereunder shall be
governed by and construed according to the laws of the State of
Delaware, except to the extent such laws are preempted by the
laws of the United States of America.
          6.6  Claims Procedure.  (a)  Participants and Beneficiaries
eligible for benefits under the Plan, or any person duly
authorized by them, have the right under ERISA and the Plan to
file a written claim to the Administrator for payment of such
benefits.
          (b)  If the claim is denied in whole or in part, the claimant
will receive written notice of the Administrator's decision,
including the specific reason for the decision, within 90 days
after the Administrator received the claim.  If the Administrator
needs more than 90 days to make a decision, the Administrator
will notify the individual in writing within the initial 90-day
period.  An additional 90 days may be taken if the Administrator
sends this notice.  The extension notice will show the date by
when the Administrator's decision will be sent.
          6.7  Plan Administration.  (a)  The Plan shall be administered by
the Administrator.  The Administrator shall serve as the final
review under the Plan and shall have sole and complete
discretionary authority to determine conclusively for all
persons, and in accordance with the terms of the documents or
instruments governing the Plan, any and all questions arising
from the administration of the Plan and interpretation of all
Plan provisions.  The Administrator shall make the final
determination of all questions relating to participation of
employees and eligibility for benefits, and the amount and type
of benefits payable to any Participant or Beneficiary.  In no way
limiting the foregoing, the Administrator shall have the
following specific duties and obligations in connection with the
administration of the Plan:
               (i)   To promulgate and enforce such rules, regulations and
                     procedures as may be proper for the efficient
                     administration of the Plan;
               (ii)  To determine all questions arising in the administration,
                     interpretation and application of the Plan, including
                     questions of eligibility and of the status and rights of
                     Participants and any other persons hereunder;
               (iii) To decide any dispute arising hereunder; provided,
                     however, that the Administrator shall not participate in
                     any matter involving any questions relating solely to the
                     Administrator's own participation or benefit under this
                     Plan;
               (iv)  To advise the Boards of Directors of the Employers
                     regarding the known future need for funds to be available
                     for distribution;
               (v)   To advise the Boards of Directors of the Employers
                     regarding the known future need for funds to be available
                     for distribution;
               (vi)  To compute the amount of benefits and other payments which
                     shall be payable to any Participant or Beneficiary in
                     accordance with the provisions of the Plan and to determine
                     the person or persons to whom such benefits shall be paid;
               (vii) To make recommendations to the Board of Directors of
                     the Company with respect to proposed amendments to the
                     Plan;
               (viii)To file all reports with government agencies,
                     Participants and other parties as may be required by law,
                     whether such reports are initially the obligation of the
                     Employers, or the Plan;
               (ix)  To engage an actuary to the Plan, if necessary, and to
                     cause the liabilities of the Plan to be evaluated by such
                     actuary; and
               (x)   To have all such other powers as may be necessary to
                     discharge its duties hereunder.
          (b)  Decisions by the Administrator shall be final, conclusive
and binding on all parties and not subject to further review.
          (c)  The Administrator may employ attorneys, consultants,
accountants or other persons (who may be attorneys, consultants,
actuaries, accountants or persons performing other services for,
or are employed by, any Employer or any affiliate of any
Employer), and the Administrator, the Employers and their other
officers and directors shall be entitled to rely upon the advice,
opinions or valuations of any such persons.  No member of the
Board of Directors of any Employer, the Chief Executive Officer
of the Company, the Administrator, nor any other officer,
director or employee of the Company or of any Employer acting on
behalf of the Board of Directors of any Employer or the Chief
Executive Officer of the Company or the Administrator, shall be
personally liable for any action, determination or interpretation
taken or made in good faith with respect to the Plan, and all
members of the Boards of Directors of the Employers, the Chief
Executive Officer of the Company and the Administrator and each
officer or employee of the Company or of an Employer acting on
their behalf shall be fully indemnified and protected by the
Company for all costs, liabilities and expenses (including, but
not limited to, reasonable attorneys' fees and court costs)
relating to any such action, determination or interpretation.
          6.8  Binding Nature.  This Plan shall be binding upon and inure
to the benefit of the Employers and their successors and assigns
and to the Participants, their Beneficiaries and their estates.
Nothing in this Plan shall preclude any Employer from
consolidating or merging into or with, or transferring all or
substantially all of its assets to another company or
corporation, whether or not such company or corporation assumes
this Plan and any obligation of the Employer hereunder.
          6.9  Withholding Taxes.  The Employers may withhold from any
benefits payable under this Plan all Federal, State, city or
other taxes as shall be required pursuant to any law or
governmental regulation or ruling.
          6.10 Action Affecting Chief Executive Officer.  To the extent any
action required to be taken by the Chief Executive Officer of the
Company would decrease, increase, accelerate, delay or otherwise
materially impact such individual's benefits under the Plan, such
action shall be taken instead by the Compensation Committee of
the Board of Directors of the Company.
          6.11 Payments Due Missing Persons.  The Administrator shall make
a reasonable effort to locate all persons entitled to benefits
(including retirement benefits and death benefits for
Beneficiaries) under the Plan; however, notwithstanding any
provisions of this Plan to the contrary, if, after a period of
five years from the date such benefits first become due, any such
persons entitled to benefits have not been located, their rights
under the Plan shall stand suspended.  Before this provision
becomes operative, the Administrator shall send a certified
letter to all such persons at their last known address advising
them that their benefits under the Plan shall be suspended.  Any
such suspended amounts shall be held by the Employer for a period
of three additional years (or a total of eight years from the
time the benefits first became payable) and thereafter such
amounts shall be forfeited and non-payable.
          6.12 Liability Limited.  Neither the Employers, the
Administrator, nor any agents, employees, officers, directors or
shareholders of any of them, nor any other person shall have any
liability or responsibility with respect to this Plan, except as
expressly provided herein.
          6.13 Incapacity.  If the Administrator shall receive evidence
satisfactory to it that a Participant or Beneficiary entitled to
receive any benefit under the Plan is, at the time when such
benefit becomes payable, a minor or is physically or mentally
incompetent to receive such benefit and to give a valid release
therefor, and that another person or an institution is then
maintaining or has custody of such Participant or Beneficiary and
that no guardian, committee or other representative of the estate
of such Participant or Beneficiary shall have been duly
appointed, the Administrator may make payment of such benefit
otherwise payable to such Participant or Beneficiary (or to such
guardian, committee or other representative of such person's
estate) to such other person or institution, and the release of
such other person or institution shall be a valid and complete
discharge for the payment of such benefit.
          6.14 Plurals.  Where appearing in the Plan, this singular shall
include the plural, and vice versa, unless the context clearly
indicates a different meaning.
          6.15 Headings.  The headings and sub-headings in this Plan are
inserted for the convenience of reference only and are to be
ignored in any construction of the provisions hereof.
          6.16 Severability.  In case any provision of this Plan shall be
held illegal or void, such illegality or invalidity shall not
affect the remaining provisions of this Plan, but shall be fully
severable, and the Plan shall be construed and enforced as if
said illegal or invalid provisions had never been inserted
herein.
          6.17 Payment of Benefits.  All amounts payable hereunder may be
paid directly by the Employer or pursuant to the terms of the
grantor trust, if any, established as a funding vehicle for
benefits provided hereunder.

         ARTICLE VII -- ADDITIONAL AFFILIATED COMPANIES

          7.1  Participation in the Plan.  (a)  Any Affiliated Company may
become an Employer with respect to this Plan with the consent of
the Chief Executive Officer of the Company, upon the following
conditions:
               (i)  such Employer shall make, execute and deliver such
                    instruments as the Company requires; and
               (ii) such Employer shall designate the Company, the Chief
                    Executive Officer of the Company and the Administrator,
                    as its agents for purposes of this Plan.
          (b)  Any such Employer may by action of its Board of Directors
withdraw from participation, subject to approval by the Chief
Executive Officer of the Company.
          7.2  Effect of Participation.  Each Employer which with the
consent of the Chief Executive Officer of the Company complies
with Section 7.1(a) shall be deemed to have adopted this Plan for
the benefit of its Employees who participate in this Plan.

          IN WITNESS WHEREOF, the Company, as the sponsoring employer of the
Plan, Has caused this Plan document to be duly executed by its
President and Chief Executive Officer on this 16th day of August,
2001.
                              MDU RESOURCES GROUP, INC.

                              By:  /s/ MARTIN A. WHITE
                                   Martin A. White
                                   President and Chief Executive Officer

                             APPENDIX C

                                      Monthly           Monthly
   Level             Salary          Retirement          Death
                                      Benefit           Benefit

    50          $50,000-$59,999         $1,330           $2,660
    51                                  $1,728           $3,456
    52          $60,000-$74,999         $1,800           $3,600
    53                                  $2,160           $4,320
    54          $75,000-$99,999         $2,580           $5,160
    55                                  $2,880           $5,760
    56          $100,000-$124,999       $3,600           $7,200
    57          $125,000-$149,999       $4,470           $8,940
    58          $150,000-$174,999       $5,360          $10,720
    59          $175,000-$199,999       $6,250          $12,500
    60          $200,000-$224,999       $7,300          $14,600
    61          $225,000-$249,999       $8,215          $16,430
    62          $250,000-$274,999       $9,125          $18,250
    63          $275,000-$299,999      $10,475          $20,950
    64          $300,000-$324,999      $12,145          $24,290
    65          $325,000-$349,999      $13,670          $27,340
    66          $350,000-$399,999      $16,110          $32,220
    67          $400,000-$449,999      $19,525          $39,050
    68          $450,000-$499,999      $22,850          $45,700
    69          $500,000-$599,999      $28,800          $57,600
    70          $600,000-$699,999      $36,500          $73,000
    71          $700,000-$799,999      $42,710          $85,420
    72          $800,000-$899,999      $49,220          $98,440
    73          $900,000-$999,999      $55,310         $110,620
    74        $1,000,000-$1,099,999    $60,200         $120,400

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