WICOR, INC.
                              MASTER SAVINGS TRUST
                                    AGREEMENT

        This agreement made as of October 1, 1996, between WICOR, Inc. a
   corporation (hereinafter referred to as the "Company") and MARSHALL &
   ILSLEY TRUST COMPANY, a Wisconsin banking corporation (hereinafter
   referred to as the "Trustee").

                                   WITNESSETH:

        WHEREAS,  the Company and certain of its affiliated subsidiary
   corporations (listed in Appendix A attached hereto and hereinafter
   collectively referred to as the "Corporation" or "Corporations"), have
   established certain pension, retirement and other employee benefit plans
   (the "Separate Plans," also listed in Appendix A) for the exclusive
   benefit of their respective eligible employees and their beneficiaries,
   such of which of the Separate Plans constitute a qualified and tax exempt
   pension plan within the meaning of Sections 401(a) and 501(a) of the
   Internal Revenue Code, as amended; and

        WHEREAS, pursuant to the terms of each of the Separate Plans, the
   Company and the Corporations have made provisions to enter into agreements
   establishing certain separate trusts, and now desire to form a master
   trust to encompass all the Separate Plans by amending and restating the
   present Wisconsin Gas Company Employee Savings Master Trust Agreement made
   on August 1, 1995 between said Wisconsin Gas Company (one of the
   corporations) and the Trustee; and

        WHEREAS, said Master Trust, as restated, is intended to be exempt
   from tax under Section 501(a) of the Internal Revenue Code, as amended, by
   reason of its forming a part of plans qualified under Section 401(a) of
   the Internal Revenue Code, as amended;

             NOW THEREFORE, is consideration of the premises and of the
   mutual covenants herein contained, the Company and the Trustee do hereby
   convenant and agree to the amendment restatement of this Master Trust
   Agreement in its entirety to read and continue as follows:

                                   ARTICLE ONE

        1.01 The Company hereby establishes with the Trustee a Master Trust
   consisting of such sums of money and such property acceptable to the
   Trustee as shall from time to time be paid or delivered to the Trustee and
   the earnings and profits thereon.  All such money and property, all
   investments made therewith and proceeds thereof and all earnings and
   profit thereon, less the payments or other distributions which, at the
   time of reference, shall have been made by the Trustee, as authorized
   herein, and referred to herein as the "Master Fund," or the "Fund," and
   shall be held by the Trustee, in trust, and dealt with in accordance with
   the provision of the Agreement.

        1.02 When the assets of each Separate Trust are transferred to the
   Trustee, the Separate Trusts shall cease to exist as separate trusts and
   shall be considered to continue hereafter as a single trust hereunder.

                                   ARTICLE TWO

        2.01 Each of the Separate Plans shall be a Participating Plan
   hereunder.

        2.02 Any other Plan may be funded in whole or in part through the
   Master Trust and become a Participating Plan thereby only if all of the
   following conditions have been met:

             a.   The Company, or a Corporation has established the Plan;

             b.   The Plan is qualified under Section 401(a) of the Internal
        Revenue Code of 1986, as amended;

             c.   The Master Trust is exempt from taxation under Section
        501(a) of the Internal Revenue Code of 1986, as amended;

             d.   The Master Trust (as then in effect and as the same may be
        amended from time to time) has been duly adopted as a trust under the
        Plan and in the case of a Corporation, the Company has consented
        thereto;

             e.   The Master Trust is maintained at all times as a domestic
        trust in the United States; and 

             f.   The Company is duly authorized under the Plan to exercise
        on behalf of such Plan all of the authority vested in it by the terms
        of this Master Trust.

        2.03 When the Master Trust is adopted as a trust under the Plan of
   any Corporation, such Corporation shall be bound by the decisions,
   instructions, actions and directions of the Company under this Agreement
   and the Trustee shall be fully protected by the Company and such
   Corporation in relying upon such decisions, instructions, actions and
   directions of the Company.  The Trustee shall not be required to give
   notice to or obtain the consent of any such Corporation with respect to
   any action which is taken by the Trustee pursuant to this Agreement, and
   the Company shall have the sole authority to enforce this Agreement on
   behalf of any such Corporation.

        2.04 Responsibility for the management and control of the assets of
   Plans utilizing the Master Trust as a funding medium (including the power
   to acquire or dispose of such assets) may be vested at the discretion of
   the Company in the Trustee and/or in one or more Investment Managers
   appointed by the Company.  That portion of the fund for which the Trustee
   shall have such responsibility is hereinafter referred to as the
   "Discretionary Fund." Any portion of the Master Fund over which an
   Investment Manager shall have such responsibility is hereinafter referred
   to as a "Directed Fund."  Allocation of assets of the Fund between or
   among any Discretionary or Directed Funds shall be determined by the
   Company.  Further, the Company, being a named fiduciary for this purpose,
   reserves the right to itself to direct the Trustee respecting the
   management and control of certain assets of specified Plans (including the
   power to acquire or dispose of such assets) and such portion of the Master
   Fund over which the Company shall have such responsibility is hereinafter
   referred to as the "Company Directed Fund."  The Company may direct the
   Trustee to hold all or any part of the assets from time to time
   constituting the Company Directed Fund separate and apart from the assets
   of the Master Fund.  For efficiency or convenience of investment or
   administration, the Master Fund or the Discretionary, Directed or Company
   Directed Fund may be divided into such one or more sub-funds as the
   Company or the Trustee may deem advisable.

        For the purpose of this Agreement, "Investment Manager" shall mean an
   investment adviser registered under the Investment Advisers Act of 1940, a
   bank (other than the Trustee) as defined in the Act, or an insurance
   company qualified to perform investment management services under the laws
   of more than one State, which shall have acknowledged in writing to the
   Company that it is a fiduciary with respect to all Participating Plans,
   and which shall have the power to manage, acquire and dispose of Plan
   assets.

        2.05 The Trustee shall maintain a separate account reflecting the
   equitable share in the Master Fund of each Participating Plan.  The
   equitable shares in the Master Fund of the respective present
   Participating Plans as of December 31, 1995 shall be proportionate to the
   fair market values of the assets allocable to such Plans under the
   Separate Trusts, as certified by the Company to the Trustee.  Thereafter,
   for the purpose of determining the equitable shares of Participating
   Plans, the Trustee shall determine the value of the assets of the Master
   Fund as of the last day of each month and as of such other dates as the
   Trustee may deem appropriate or the Company may direct.  In addition, for
   the convenience of the company, the Company may request the Trustee to
   include in such account assets which do not constitute part of the Master
   Fund or are held by the Trustee in a segregated Company Directed Fund, for
   the purposes of determining the value of all of the assets of such
   Participating Plans.  Assets shall be valued at their market values at the
   close of business on the date of valuation, or, in the absence of readily
   ascertainable market values, at such values as the Trustee shall determine
   in accordance with methods consistently followed and uniformly applied. 
   Anything herein to the contrary notwithstanding, with respect to assets
   constituting part of a Directed Fund hereunder or in the event that assets
   which do not constitute part of the Master Fund or which are held by the
   Trustee in a segregated Company Directed Fund are included in such
   valuation or account at the request of the Company, the Trustee may rely
   for all purposes of this Agreement, including for the purpose of
   determining the value of such assets as of any monthly or other valuation
   date, on any certified appraisal or other form of valuation submitted to
   it by the Investment Manager, the Company, or by the person or persons
   controlling such assets.

        2.06 Except as provided in Section 3.01(c), the Trustee shall not be
   required to maintain any separate records or accounts with respect to any
   participant in (or beneficiary of) any Participating Plan which is of the
   defined benefit type, and any such records or accounts required to be
   maintained pursuant to the terms of any such Plan shall be maintained by
   the Company or by the appropriate committee, entity or person(s) directly
   charged with such responsibility under the individual Participating Plan.

        2.07 By entering into this Agreement, the Trustee does not assume any
   responsibility or undertake any duty to enforce payment of any
   contribution to any Participating Plan, any responsibility for the
   adequacy of the Fund or the funding standards adopted by the sponsor of
   any Participating Plan to meet or discharge any pension or other
   liabilities under such Plan, or (except as otherwise required by law) any
   responsibility under the terms of this Agreement for the management or
   control of any Directed Funds or Company Directed Funds.  No duties or
   obligations shall be imposed upon the Trustee unless they have been
   specifically undertaken by the express terms of this Agreement.

        2.08 Except as may otherwise be permitted by law, at no time prior to
   the satisfaction of all liabilities with respect to participants and their
   beneficiaries under any Participating Plan shall any part of the equitable
   share of such Participating Plan in the Master Fund be used for, or
   diverted to, any purposes other than for the exclusive benefit of such
   participants and their beneficiaries, and for defraying reasonable
   expenses of administering such Plans.

                                  ARTICLE THREE

        3.01 The Trustee shall:

             a.   hold, invest and reinvest the Discretionary Fund as
        provided in Article Four in accordance with the powers and discretion
        contained in or referred to in Article Seven;

             b.   settle purchases and sales for any Directed Fund upon the
        instructions of the Investment Manager as provided in Article Five or
        in the case of a Company Directed Fund, upon the instructions of the
        Company;

             c.   pay moneys on the order of the Company, including when the
        Company shall so order, payments directly to or for the benefit of
        the participants and their beneficiaries, or to an insurance company
        to provide, by the purchase of an annuity contract, or otherwise, for
        the payment of benefits and the Trustee shall keep records of any and
        all such payments so directed and provide such tax advices or
        governmental forms and reports as shall from time to time be agreed
        upon between the Company and the Trustee; and 

             d.   transfer any portion of the Master Fund on the order of the
        Company to any insurance company or other trustee to provide an
        alternative or additional funding medium or investment vehicle for
        the management and/or control of Participating Plan assets.

        3.02 Any orders pursuant to subparagraphs (c) and (d) of Section 3.01
   may, but need not specify the application to be made of moneys so ordered,
   and the Trustee may charge such distribution against any portion of the
   Master Fund, as the Company may direct.  The Trustee may assume that any
   such orders are not contrary to any applicable law.  The Trustee shall not
   be responsible in any way respecting the determination, computation,
   payment or application of any benefit or payment which it is ordered to
   make, or for the form, terms or issuer of any insurance contract which it
   is directed to purchase with assets of the Fund (whether or not such
   contract is purchased to provide primarily for the payment of benefits
   under any Participating Plan or primary as an investment vehicle or
   funding medium), for performing any functions under any insurance contract
   which it may be directed to purchase and hold as Contract Holder
   thereunder (other than the execution of any documents incidental thereto
   on the instruction of the Company), or for the terms of any trust
   agreement under which any trustee to which it shall deliver any assets of
   the Fund on the order of the Company is acting, or for any other matter
   affecting the administration of a Plan by the Company, or any other person
   or persons to whom responsibility for Plan administration is allocated or
   delegated pursuant to the terms of a Participating Plan.

        3.03 Any power or duty of the Company hereunder shall be exercised by
   the Board of Directors of the Company or by such other person or persons
   as are authorized to exercise such powers or duties as certified by the
   Company in writing to the Trustee.  The Trustee shall be entitled to rely
   upon any such certification by the Company.  The Trustee shall be fully
   protected in continuing to rely on such certification until a subsequent
   certification is filed with the Trustee.

                                  ARTICLE FOUR

        4.01 The Trustee shall invest and reinvest the Discretionary Fund as
   a single fund without distinction between principal and income in such
   investments and at such time or times and in such shares and proportions
   as it, in its absolute discretion, shall deem advisable; except that, the
   Trustee is authorized to hold in the Discretionary Fund uninvested cash
   awaiting investment and such additional cash balances as it shall deem
   reasonable or necessary to meet anticipated distributions from or
   administrative costs of any Participating Plan or the Fund, without
   incurring any liability for the payment of interest on such cash,
   notwithstanding that the Trustee or an affiliate thereof may accrue
   interest on such cash balances.

             The Trustee shall discharge the foregoing powers and discretion
   in accordance with the funding policy and guidelines established by the
   Company from time to time and communicated in writing to the Trustee.  The
   Trustee shall have no responsibility with respect to the formulation of
   any funding, investment or diversification policy embodied in any such
   direction.

             If the Company has exercised its discretion to vest
   responsibility for the management and control of any portion of the Master
   Fund in one or more Investment Managers or in itself as to a Company
   Directed Fund, or if the Master Fund is not the only funding medium under
   a Participating Plan, any trustee (including the Trustee), Investment
   Manager or other person in whom fiduciary responsibility is vested for the
   management and control of any Plan assets shall exercise its fiduciary
   responsibilities with respect to such Plan assets, including without
   limitation any responsibility of diversification imposed by Section
   404(a)(1)(c) of the Employee Retirement Income Security Act of 1974
   ("ERISA"), as if the assets allocated to it constituted the entirety of
   the Plan assets.  The Company or some other fiduciary named by it shall be
   responsible for the overall diversification of the entire Master Fund.

        4.02 The Trustee may in its discretion invest and reinvest in either
   (i) any fund created and administered by it, as the trustee thereof, for
   the collective investment of the assets of employee benefit trusts or
   otherwise, as long as such collective investment fund is a qualified trust
   under the applicable provisions of the Internal Revenue Code (and while
   any portion of the Fund is so invested such collective investment fund
   shall constitute part of the Participating Plans, and the instrument
   creating such fund shall constitute part of this Master Trust Agreement)
   or (ii) the shares of any mutual fund including any such fund from which
   the Trustee or any affiliate thereof receives an investment management fee
   or any other fee.

                                  ARTICLE FIVE

        5.01 The investment and reinvestment of any Directed Fund established
   under this Agreement shall be under the exclusive management and control
   of the Investment Manager appointed by the Company.  The Trustee shall not
   be a party to any agreement with the Investment Manager, and the terms and
   conditions of appointment, authority and retention of the Investment
   Manager shall be the sole responsibility of the Company.

             The Company shall certify in writing to the Trustee:

             a.   that it has appointed an Investment Manager with respect to
        each Participating Plan; and 

             b.   the assets of the fund to be allocated to the Directed Fund
        for which such Investment Manager shall have responsibility.

             The Company shall also furnish to the Trustee a certification by
   such Investment Manager that it is an "Investment Manager" as such term is
   defined in Section 2.04 of this Agreement.

             The Investment Manager shall furnish the Trustee from time to
   time with the names and signatures of those persons authorized to direct
   the Trustee on its behalf hereunder.  The Trustee shall be fully protected
   in continuing on its behalf hereunder.  The Trustee shall be fully
   protected in continuing to rely on the certification provided by an
   Investment Manager as to such authorized persons until a subsequent
   certification is filed with the Trustee.  The Trustee shall have the right
   to request that all directions by an Investment Manager pursuant to this
   Agreement be in writing and shall assume no liability hereunder for
   failure to act pursuant to such directions unless and until it shall
   receive directions in a form satisfactory to it.

        5.02 All transactions in or from a Directed Fund related to the
   acquisition or disposal of assets, as well as all purchases and sales of
   assets, shall be made upon such terms and conditions and from or through
   such principals and agents, as the Investment Manager shall direct.  No
   directed transactions shall be executed through the facilities of the
   Trustee except in those instances where the Trustee shall make available
   its facilities solely for the purposes of temporary investment of cash
   reserves of a Directed Fund.  (However, nothing herein shall confer any
   authority or obligation upon the Trustee to invest or reinvest the cash
   balances of any Directed Fund unless and until it receives directions from
   the Investment Manager.)

        5.03 Supervision of the Investment Manager shall be the exclusive
   responsibility of the Company.  Therefore, the Trustee shall have no duty
   to review any direction or any securities or other property held in any
   Directed Fund or to make suggestions to the Investment Manager or the
   Company with respect to the exercise or non-exercise of any power by the
   Investment Manager.  The Trustee shall be fully protected in acting or
   omitting to act in accordance with or in the absence of the written
   directions of the Investment Manager or of the Company respecting any
   Company Directed Fund and shall be under no liability for any loss of any
   kind which may result by reason of any action taken or omitted by it in
   good faith in accordance with any such direction or by reason of inaction
   in the absence of such written directions.

        5.04 The Trustee shall not be deemed to have any responsibility to
   manage and control any asset held in a Directed Fund or Company Directed
   Fund upon the resignation or removal of an Investment Manager or
   withdrawal by the Company of its control as to a Company Directed Fund
   unless and until it has been notified in writing by the Company of its
   withdrawals of control as to a Company Directed Fund or that the
   Investment Manager's authority has terminated and that such Directed Fund
   or Company Directed Fund assets are to be integrated with the
   Discretionary Fund.  Such notice shall not be deemed effective until a
   reasonable period after it has been received by the Trustee.  In the event
   that the assets of a Directed Fund or Company Directed Fund shall become
   integrated at any time with the Discretionary Fund, the Trustee shall not
   be liable for any losses to the Master Retirement Fund resulting from the
   disposition of any investment made by an Investment Manager or the Company
   or for the holding for any illiquid or unmarketable securities or the
   holding of any other asset acquired by the Investment Manager or the
   Company if the Trustee is unable to dispose of such investments because of
   any Securities Laws restrictions or if any orderly liquidation of such
   investment is impractical under prevailing conditions, or for failure to
   comply with any investment or diversification limitations imposed by the
   Company pursuant to the power reserved to it under Section 4.01 or for any
   other violation of the terms of this Agreement, the Participating Plans or
   applicable law or laws as a result of the addition of Directed Fund or
   Company Directed Fund assets to the Discretionary Fund.

        5.05 The Trustee shall not be liable for the acts or omissions of any
   Investment Manager constituting a breach of the latter's duties unless it
   shall have been judicially determined that the Trustee knowingly
   participated in, or knowingly undertook to conceal, such act or omission,
   knowing such act or omission constituted a breach of the Investment
   Manager's duties hereunder.

                                   ARTICLE SIX

        6.01 Without in any way limiting the powers and discretions conferred
   upon the Investment Manager by the other provisions of this Agreement or
   by law, any Investment Manager appointed hereunder shall have the
   following powers and discretions with respect to the Directed Fund subject
   to its management and control, and, upon the directions of such Investment
   Manager, the Trustee shall make, execute, acknowledge and deliver any and
   all documents of transfer and conveyance and any and all other instruments
   that may be necessary or appropriate to carry out such powers and
   discretions:

             a.   to sell, exchange, convey, transfer or otherwise dispose of
        any property constituting the Directed Fund by private contract or at
        public auction, and no person dealing with the Investment Managers or
        the Trustee shall be bound to see to the application of the purchase
        money or to inquire into the validity, expediency or propriety of any
        such sale or other disposition;

             b.   to enter into contracts or to make commitments either alone
        or in concert with others to sell at any future date any property
        acquired for the Directed Fund or to purchase at any future date any
        property which it may be authorized to acquire under this Agreement;

             c.   to purchase part interests in real property or in mortgages
        on real property, wherever such real property may be situated;

             d.   to lease to others for any term without regard to the
        duration of this Trust any real property or part interest in real
        property held in the Directed Fund;

             e.   to delegate to a manager or the holder or holders of a
        majority interest in any real property or mortgage on real property
        at any time constituting a part of the Directed Fund, the management
        and operation of any part interest in such real property or mortgage
        and the authority to sell such real property or mortgage or otherwise
        carry out the decisions of such manager or holder or holders of such
        majority interest;

             f.   to vote upon any stocks, bonds or other securities; to give
        general or special proxies or powers of attorney with or without
        power of substitution; to exercise any conversion privileges,
        subscription rights or other options and to make any payments
        incidental thereto; to consent to or otherwise participate in
        corporate reorganizations or other changes affecting corporate
        securities and to delegate discretionary powers and to pay any
        assessments or charges in connection therewith; and generally to
        exercise any of the powers of an owner with respect to stock, bonds,
        securities or other property held in the Directed Fund.

             g.   to convert, redeem, exchange for other securities or other
        property any securities or property held by it, or to write covered
        call options against securities held by it or other forms of options
        directly related to any such call options outstanding; and

             h.   to invest, in the case of any Investment Manager which is a
        bank or trust company, through the medium of any fund created and
        administered by such Investment Manager for the collective investment
        of the assets of employee benefit trusts or otherwise, or in the case
        of any Investment Manager, to invest through the medium of any
        similar collective investment fund created and administered by the
        Trustee hereof which serves as a vehicle for the temporary investment
        of reserves of participating trusts, so long as in either case such
        collective investment fund is a qualified trust under the applicable
        provisions of the Internal Revenue Code (and while any portion of the
        assets of the Participating Plans is so invested, such collective
        investment fund shall constitute part of the Separate Plans, and the
        instrument creating such fund shall constitute part of this Master
        Trust).

        6.02 In the event that any investment is made by an Investment
   Manager in real property, then the Trustee shall have the right to request
   as a condition precedent to its executing any documents or paying over any
   trust assets in connection with such transactions, that it received a
   certified appraisal that the property has a value at least equal to the
   transaction price and that the property is in the form and condition
   described in such documents, and, further, that it receive an opinion of
   counsel (who may be counsel to the Investment Manager) that such documents
   are in proper form for execution by the Trustee, that such deed or
   document has been or will be properly recorded under all applicable
   Recording Acts, and that appropriate policies adequately insuring the
   trust against loss for any reason (including a defect in title) have been
   procured in the name of the Trustee.  In addition, the Investment Manager
   shall provide the Trustee, upon request, with the current appraisals of
   such property which shall be relied upon by the Trustee for all valuation
   and accounting purposes under this Agreement.

        6.03 The Company, as to any Company Directed Fund, shall be vested
   with all of the powers and discretion vested in an Investment Manager by
   Section 6.01 and, in addition, may specifically direct the acquisition,
   holding or sale of employer securities or employer real property which are
   "qualifying" within the meaning of the subject to all the limitations of
   ERISA, except that employer securities or employer real property may be
   held to the extent permitted under Section 414(c)(2) or any other
   transitional rule or applicable exemption under ERISA.

                                  ARTICLE SEVEN

        7.01 The Trustee, with respect to the Discretionary Fund, shall be
   vested with all of the powers and discretions vested in the Investment
   Manager by Section 6.01.

        7.02 In addition, the Trustee is hereby authorized respecting the
   Master Fund in its discretion:

             a.   to register any securities held in the Fund in its own name
        or in the name of a nominee and to hold any investment in bearer
        form, and to combine certificates representing such investments with
        certificates of the same issue held by the Trustee in other fiduciary
        capacities or to deposit or to arrange for the deposit of such
        securities in any qualified central depository or clearing
        corporation even though, when so deposited, such securities may be
        merged and held in bulk in the name of the nominee of such depository
        with other securities deposited therein by any other person, or to
        deposit or arrange for the deposit of any securities issued by the
        United States Government, or an agency or instrumentality thereof,
        with a federal reserve bank, but the books and records of the Trustee
        shall at the times show that all such investments are part of the
        Master Fund;

             b.   to employ suitable agents, depositories and counsel,
        domestic or foreign, and to charge their reasonable expenses and
        compensation against the fund;

             c.   to borrow money from any source as may be necessary or
        advisable to effectuate the purpose of the Master Fund on such terms
        and conditions as the Trustee, in its absolute discretion, may deem
        advisable;

             d.   to deposit any funds of the trust in interest bearing
        account deposits maintained by or savings certificates issued by the
        Trustee, in its separate corporate capacity, or in any other banking
        institution affiliated with the Trustee;

             e.   to comprise or otherwise adjust all claims in favor of or
        against the Fund subject to Company approval;

             f.   to organize corporations under the laws of any state for
        the purpose of acquiring or holding title to any property for the
        fund or to request the Company to appoint another trustee for such
        purpose;

             g.   to make any distribution or transfer of the Discretionary
        Fund assets in cash or in kind as the Trustee and, in furtherance
        thereof, to value such assets, which valuation shall be subject to
        the approval of the Company.

                                  ARTICLE EIGHT

        8.01 The Trustee shall keep accurate and detailed accounts of all
   investments, receipts, disbursements and other transactions hereunder for
   the Master Fund (including any Directed Fund or Company Directed Fund) and
   all accounts, books and records relating thereto shall be open to
   inspection and audit at all reasonable times by any persons designated by
   the Company.

             In addition, within ninety (90) days following the close of each
   fiscal year, and within ninety (90) days after the removal or resignation
   of the Trustee, the Trustee shall file with the Company a written
   accounting setting forth all receipts and disbursements of the Fund and
   all investments and other transactions effected by it upon its own
   authority or pursuant to the directions of any Investment Manager or the
   Company as herein provided during such fiscal year or during the period
   from the close of the last fiscal year to the date of such removal or
   resignation.  Within sixty (60) days from the date of filing such annual
   or other account, the Trustee, if requested by the Company, will also
   serve copies of such account upon any persons designated by the Company as
   having administrative responsibility with respect to any Participating
   Plan.  Upon the expiration of two hundred ten (210) days from the date of
   filing such account, the Trustee shall be forever released and discharged
   from all liability and accountability to the Company or any person upon
   whom the Trustee has served a copy of the account with respect to the
   accuracy of such accounting, except with respect to any such acts or
   transactions as to which the Company or any person upon whom the account
   has been served shall within such two hundred ten (210) day period file
   with the Trustee specific written objections.

             To the extent, if any, that the Trustee shall be required to
   value the assets of any Directed Fund or Company Directed Fund for any
   purpose, including any accounting as hereinabove provided, the Trustee may
   for all purposes of this Agreement on any certified appraisal or other
   form of valuation submitted to it by the party responsible for the
   management and control of such Fund.

        8.02 Except to the extent that Sections 502 and 504 of ERISA, as the
   same may be amended from time to time, may provide otherwise, in order to
   protect the Master Trust from the expenses which might otherwise be
   incurred, no one other than the Company may require the Trustee to account
   or may institute an action or preceding against the Trustee or the Fund. 
   However, nothing herein shall in any way limit the Trustee's right to
   bring any action or proceeding to settle its account or for such other
   relief as it may deem appropriate.

        8.03 The Trustee may from time to time consult with counsel, who may
   be counsel to the Company, with respect to any questions arising as to the
   construction of this Agreement or any action to be taken hereunder and the
   Trustee shall be fully protected, to the extent permitted by law, in
   acting in good faith upon the advice of counsel.

                                  ARTICLE NINE

        9.01 Any expenses incurred by the Trustee in connection with its
   administration of this Trust, including fees for legal services rendered
   to the Trustee, provided the Trustee gives written notice served to the
   Company prior to the retaining of such legal service, (whether or not
   rendered in connection with a judicial or administrative proceeding and
   whether or not incurred while it is acting as Trustee), such compensation
   to the Trustee as may be agreed upon from time to time between the Trustee
   and the Company, and all other proper charges and disbursements of the
   Trustee, shall be paid from the Master Fund unless paid by the Company. 
   The Company shall reimburse the Trustee for any such expenses if for any
   reason such expenses cannot be paid out of the Fund.  The Company may
   direct the Trustee to pay from the Master Fund the fees of any Investment
   Manager appointed pursuant to Section 5.01 and other proper administration
   expenses of any Participating Plan, including but not limited to actuarial
   fees.  All taxes of any and all kinds whatsoever that may be levied or
   assessed under existing or future laws upon the Master Fund or the income
   thereof shall be paid from the Master Fund.  Any amount paid from the
   Master Fund which is specifically allocable to a particular Participating
   Plan or Plans shall be charged against the equitable shares of such
   Participating Plan or Plans; any amount paid from the Fund which is
   allocable to all of the Participating Plans shall be charged against the
   Fund as a whole.

                                   ARTICLE TEN

        10.01     Subject to the provisions of Section 3.03, whenever the
   provisions of this Agreement require or permit any action to be taken by
   the Company or any Corporation, such action may be taken by the Board of
   Directors of the entity taking the same or by any person authorized to act
   on behalf of such entity by such Board of Directors.  Any resolution
   adopted by the Board of Directors of any corporation shall be certified to
   the Trustee by the Secretary or an Assistant Secretary of such Corporation
   under its corporate seal, and the Trustee may rely upon any resolution so
   certified until revoked or modified by a further resolution similarly
   certified to the Trustee.

        10.02     The Company shall furnish the Trustee from time to time
   with a certificate of its Secretary or an Assistant Secretary as to the
   names and signatures of all persons authorized to issue orders, requests,
   instructions and objections to the Trustee pursuant to the provisions of
   this Agreement.

        10.03     All orders, requests, instructions and objections of any of
   the persons authorized to act in accordance with the provisions of this
   Agreement may be required by the Trustee, to the extent practical, to be
   in writing, but the Trustee shall be fully protected in acting in
   accordance with either such written instructions or oral instructions
   received by the Trustee in good faith.

        10.04     The Trustee shall have the right to assume in the absence
   of written notice to the contrary, that no event constituting a change in
   the authority of any person or terminating any Investment Manager's
   authority has occurred.

                                 ARTICLE ELEVEN

        11.01     If Marshall & Ilsley Trust Company is at any time acting as
   a successor Trustee or succeeds to responsibilities hereunder for
   management of plan assets with respect to the Fund (or any portion
   thereof), the Company hereby agrees to hold Marshall & Ilsley Trust
   Company harmless from and against all taxes, expenses (including counsel
   fees), liabilities, claims, damages, actions, suits or other charges
   incurred by or assessed against it as successor Trustee, as a direct or
   indirect result of any act or omission of a predecessor trustee or any
   other person who, prior to Marshall & Ilsley Trust Company's acceptance as
   Trustee, was charged under any agreement affecting Fund assets for
   investment responsibility with respect to such assets.

                                 ARTICLE TWELVE

        12.01     Upon receipt of notice from the Company of the termination,
   the disqualification under Section 401(a) of the Code, or the withdrawal
   from this Master Trust, of any Participating Plan or any part thereof, the
   Trustee shall withdraw and segregate the share of the assets of the Fund
   allocable to such Participating Plan or part thereof and shall either
   dispose of such segregated share in accordance with the directions of the
   Company or continue to hold such segregated share, in trust, as a separate
   trust governed by the same provisions as this Agreement, except that if
   such segregated share is equal to an entire Participating Plan in the
   Fund, the entity or successor thereto which had established such
   Participating Plan shall thereafter be deemed to be "the Company" for all
   purposes of the Agreement.  If such segregated share is less than the
   entire equitable share of a Participating Plan in the Fund, the Company
   shall certify to the Trustee, that portion of the equitable share of such
   Participating Plan attributable to the participants and their
   beneficiaries on whose account such assets are to be segregated.

        12.02     The Company reserves the right at any time and from time to
   time to terminate or to amend, in whole or in part, any or all of the
   provisions of this Agreement by notice thereof in writing delivered to the
   Trustee; provided that, no such amendment which affects the rights, duties
   or responsibilities of the Trustee may be made without its consent, and
   provided further that, except as may be otherwise allowed under Section
   403(c) of ERISA (it being the Company's intent that all contributions by
   it or any Corporation to any Participating Plan be conditioned as allowed
   in said Section), no instrument of termination or amendment shall
   authorize or permit, at any time prior to the satisfaction of all
   liabilities with respect to the participants and their beneficiaries under
   the Plans, any part of the corpus or income of the Fund to be used for or
   diverted to purposes other than for the exclusive benefit of such
   participants and their beneficiaries.

        12.03     In the event of the termination of the Trust as above
   provided (or of all the Participating Plans), the Trustee shall continue
   to administer the Fund as hereinabove provided until all of the purposes
   for which it has been established have been accomplished or dispose of the
   Fund after the payment or other provision of all expenses incurred in the
   administration and termination of the Trust (including any compensation to
   which the Trustee may be entitled), all in accordance with the written
   order of the Company or any successor thereto.  Until the final
   distribution of such Fund, the Trustee shall continue to have and may
   exercise all of the powers and discretions conferred upon it by this
   Agreement.

        12.04     The Trustee may be removed by the Company at any time upon
   thirty (30) days' notice in writing to the Trustee.  The Trustee may
   resign at any time upon thirty (30) days' notice in writing to the
   Company.  Upon such removal or resignation of the Trustee, the Company
   shall appoint a successor trustee and, upon acceptance of such appointment
   by the successor trustee, the Trustee shall assign, transfer and pay over
   to such successor trustee the funds and properties then constituting the
   Fund, or the Company shall establish an alternative funding medium and the
   Trustee shall assign, transfer and pay over the Fund, as then constituted,
   upon the directions of the Company.  The Trustee is authorized, however,
   to reserve such amount as to it may seem advisable for payments of its
   fees and expenses in connection with the settlement of its account or
   otherwise, and any balance of such reserve remaining after the payment of
   such fees and expenses shall be paid over to the successor trustee or
   alternative funding medium, as the case may be.  Notwithstanding any
   provision of the Plans or this Agreement to the contrary, the Trustee is
   hereby authorized to invest and reinvest such reserves in any investment
   or investment vehicle (including any collective investment fund described
   in Section 4.02) appropriate for the temporary investment of each cash
   reserves of trusts.

                  If for any reason the Company cannot or does not act in the
   event of the resignation or removal of the Trustee, as hereinabove
   provided, the Trustee may apply to a court of competent jurisdiction for
   the appointment of a successor Trustee or for instructions.  Any expenses
   incurred by the Trustee in connection therewith shall be paid from the
   Fund as an expense of administration.

        12.05     Anything hereinabove to the contrary notwithstanding, the
   Trustee may condition its delivery, transfer or distribution of any asset
   under this Article upon the Trustee's receiving assurance satisfactory to
   it that the approval of appropriate governmental or other authorities has
   been secured and that all notices and other procedures required by
   applicable law have been accomplished.

                                ARTICLE THIRTEEN

        13.01     To the extent that State law shall not have been preempted
   by the provisions of ERISA or any other laws of the United States
   heretofore or hereafter enacted, as the same may be amended from time to
   time, this Agreement shall be administered, construed and enforced
   according to the laws of the State of Wisconsin.

                                ARTICLE FOURTEEN

        14.01     The Company shall provide the Trustee with copies of all
   documents constituting the Participating Plans at the time this Agreement
   is executed by the Company or adopted under any other plan, as provided in
   Article Two, and all other documents amending or supplementing the
   Participating Plan promptly upon their adoption.  The Trustee shall be
   entitled to rely upon the Company's attention to this obligation and shall
   be under no duty to inquire of the Company as to the existence of any
   documents not provided by the Company hereunder.

                                 ARTICLE FIFTEEN

        15.01     Pursuant to a resolution of its Board of Directors and in
   consideration of the Trustee's agreeing to enter into this Agreement, the
   Company hereby agrees to hold harmless Marshall & Ilsley Trust Company,
   individually and as Trustee under this Agreement, and Marshall & Ilsley
   Trust Company directors, officers, and employees from and against all
   amounts including without limitation, taxes, expenses (including
   reasonable counsel fees), liabilities, claims, damages, actions, suits or
   other charges, incurred by or assessed against Marshall & Ilsley Trust
   Company, individually or as Trustee, or its directors, officers, or
   employees, (i) as a direct or indirect result of anything done in good
   faith, or alleged to have been done, by or on behalf of Marshall & Ilsley
   Trust Company in reliance upon the directions of the Company, any
   Investment Manager appointed by the Company, or any person or committee
   authorized to act on behalf of the Company or to appoint such Investment
   Manager under any Participating Plan, or anything omitted to be done in
   good faith, or alleged to have been omitted, in the absence of such
   directions, or (ii) as a direct or indirect result of the failure of the
   Company or such person or a committee, as a co-fiduciary under said Plans,
   directly or through its agents, to adequately, carefully and diligently
   discharge its responsibilities with respect to the selection, supervision
   and/or retention of any Investment Manager.

        15.02     The Company further agrees that the undertakings made in
   this Article of this Agreement shall be binding on its successors or
   assigns and shall survive termination, amendment or restatement of this
   Agreement, or the resignation or removal of the Trustee, and that this
   Article shall be construed as a contract between the Company and the
   Trustee according to the laws of the State of Wisconsin in effect from
   time to time.

        IN  WITNESS  WHEREOF,  the parties hereto have caused this Agreement
   to be executed by their respective authorized officers and their corporate
   seals to be affixed as of the date first above set forth.

                                 WICOR, INC

                                 BY:

                                 TITLE:

   [Corporate Seal]
                                 ATTEST:

                                 TITLE:



                                 MARSHALL & ILSLEY TRUST COMPANY

                                 BY:

                                 TITLE:

   [Corporate Seal]
                                 ATTEST:

                                 TITLE:

   

                                   Appendix A


        Affiliated and Subsidiary Corporations

             WICOR, Inc.

             Wisconsin Gas Company

             WICOR Energy Services

             WEXCO of Delaware, Inc.

             Sta-Rite Industries, Inc.

             HYPRO Corporation

             SHURflo, Inc.


        Plans

             Wisconsin Gas Company Employees Savings Plan
                   
             Wisconsin Gas Company Local 6-18-1 Savings Plan
                   
             Wisconsin Gas Company Local 6-18 Savings Plan
                   
             Hypro Corporation 401(k) and Profit Sharing Plan
                   
             Sta-Rite Industries Incentive Savings Plan
                   
             SHURflo 401(k) Profit Sharing Plan