WAUSAU-MOSINEE PAPER CORPORATION
                1990 STOCK APPRECIATION RIGHTS PLAN

                     As amended March 4, 1999

                 WAUSAU-MOSINEE PAPER CORPORATION
                1990 STOCK APPRECIATION RIGHTS PLAN

 1.  PURPOSE.

     The purpose of the Wausau-Mosinee Paper Corporation 1990 Stock
 Appreciation Rights Plan (the "Plan") is to attract and retain
 outstanding individuals as officers and key employees of Wausau-Mosinee
 Paper Corporation (the "Corporation") and its subsidiaries, and to
 furnish incentives to such individuals through rewards based upon the
 performance of the common stock of the Corporation.  To this end, the
 Committee hereinafter designated may grant stock appreciation rights to
 officers and other key employees of the Corporation and its
 subsidiaries, on the terms and subject to the conditions set forth in
 this Plan.

 2.  PARTICIPANTS.

     Participants in the Plan shall consist of such officers and other
 key employees of the Corporation and its subsidiaries as the Committee
 in its sole discretion may select from time to time to receive stock
 appreciation rights.

 3.  ADMINISTRATION OF THE PLAN.

     The Plan shall be administered by a Committee (the "Committee") of
 at least three members appointed by the Board of Directors of the
 Corporation from among its members.  No person shall be appointed a
 member of the Committee if, during the one year prior to the date on
 which such person's service as a member of the Committee is to
 commence, such person was granted or awarded equity securities of the
 Corporation (within the meaning of Securities and Exchange Commission
 Rule 16a-1(d)) under the Plan or any other plan of the Corporation or
 any subsidiary of the Corporation.  Subject to the provisions of the
 Plan, the Committee shall have authority (i) to determine which

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 employees of the Corporation and its subsidiaries shall be eligible for
 participation in the Plan; (ii) to select employees to receive grants
 under the Plan; (iii) to determine the number of stock appreciation
 rights subject to the grant, the time and conditions of exercise or
 vesting, the fair market value of the common stock of the Corporation
 for purposes of the Plan, and all other terms and conditions of any
 grant; and (iv) to prescribe the form of agreement, certificate or
 other instrument evidencing the grant.  The Committee shall also have
 authority to interpret the Plan and to establish, amend and rescind
 rules and regulations for the administration of the Plan, and all such
 interpretations, rules and regulations shall be conclusive and
 binding on all persons, provided, however, that the Committee shall not
 exercise such authority in a manner adversely and significantly
 affecting rights previously granted unless the action taken is required
 to comply with any applicable law or regulation.

 4.  EFFECTIVE DATE AND TERM OF PLAN.

     The Plan shall become effective on July 24, 1990, the date of its
 approval by the Board of Directors of the Corporation.  The Plan shall
 terminate ten years after it becomes effective, unless terminated
 sooner by action of the Board of Directors.  No further grants may be
 made under the Plan after its termination, but the termination of the
 Plan shall not affect the rights of any participant under, or the
 authority of the Committee with respect to, any grants made prior to
 termination.

 5.  SHARES SUBJECT TO THE PLAN.

     Subject to adjustment as provided in paragraph 7 hereof, the
 aggregate number of shares of common stock of the Corporation with
 respect to which stock appreciation rights may be granted under the
 Plan shall not exceed 250,000.  Whenever a stock appreciation right

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 granted under the Plan can no longer under any circumstances be
 exercised, the shares, if any, then remaining subject to such stock
 appreciation right shall thereupon be released from such stock
 appreciation right and shall thereafter be available for additional
 grants of stock appreciation rights under the Plan.

 6.  STOCK APPRECIATION RIGHTS.

     (a)  Grants.  Stock appreciation rights entitling the grantee to
 receive cash equal to the sum of (i) the appreciation in value of and
 (ii) the value of the reinvested cash dividends which would have been
 paid with respect to a stated number of shares of common stock of the
 Corporation between the date of grant and the date of exercise (the
 "hypothetical reinvested cash dividends") may be granted from time to 
 time to such officers and other key employees of the Corporation and
 its subsidiaries as may be selected by the Committee.

     (b)  Terms of Grant.  Stock appreciation rights shall be
 exercisable in whole or in such installments and at such times as may
 be determined by the Committee, provided that no stock appreciation
 right shall be exercisable more than twenty years after the date of
 grant.  The Committee may at the time of grant or at any time
 thereafter impose such additional terms and conditions on the exercise
 of stock appreciation rights as it deems necessary or desirable for
 compliance with Section 16(a) or 16(b) of the Securities Exchange Act
 of 1934 and the rules and regulations thereunder.

     (c)  Termination of Employment or Death.  If a grantee ceases to be
 employed by the Corporation and any of its subsidiaries for any reason
 other than death or attaining his Retirement Date, any stock
 appreciation right held by such grantee may be exercised for a period
 ending on the earlier of the 90th day following the date of such

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 cessation of employment or the date of expiration of such stock
 appreciation right, but only with respect to that number of shares of
 common stock for which such right was exercisable immediately prior to
 the date of cessation of employment.

      If a grantee ceases to be employed by the Corporation or any of
 its subsidiaries by reason of death prior to his Retirement Date, or
 dies within 90 days after termination of his employment by the
 Corporation or any of its subsidiaries prior to his having attained his
 Retirement Date, any stock appreciation right held by such grantee may
 be exercised, with respect to all or any part of the common stock of
 the Corporation with respect to which such stock appreciation right was
 exercisable by the grantee immediately prior to his death, for a period
 ending on the first anniversary of the date of such grantee's death.

     If a grantee attains his Retirement Date, any stock appreciation
 right held by such grantee may be exercised for a period ending on the
 second anniversary of such Retirement Date, but only with respect to
 that number of shares of common stock for which such right was
 exercisable immediately prior to the date of cessation of employment.

     Notwithstanding any other provision of this Section 6(c), no stock
 appreciation right shall be exercisable after the first to occur of (1)
 the date specified in Section 6(b) or (2) the date specified by the
 Committee in the grant evidencing such rights.

      For purposes of this Plan, the term "Retirement Date" shall mean
 the date on which the grantee's employment with the Corporation (and
 any parent or subsidiary of the Corporation) terminates (including
 termination because of death) if the Optionee had then attained age 55
 and completed ten calendar years of service with the Corporation (or
 any parent or subsidiary of the Corporation).

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     (d)  Payment on Exercise.  Upon exercise of a stock appreciation
 right the grantee shall be paid within five business days an amount in
 cash equal to the sum of (i) the amount by which the fair market value
 of one share of the Corporation's common stock on the date of exercise
 exceeds the date of grant value thereof multiplied by the number of
 shares in respect of which the stock appreciation right is being
 exercised and (ii) the value of the hypothetical reinvested cash
 dividends associated therewith.  The value of the hypothetical
 reinvested cash dividends associated with a share in respect of which
 the stock appreciation right is being exercised (the "exercised share")
 shall be equal to the fair market value on the date of exercise of the
 number of additional shares (or fraction thereof) of the Corporation's
 common stock the grantee would have owned if it is assumed (1) that
 cash dividends which would have been paid with respect to the exercised
 share if the exercised share had been outstanding from the time of
 grant had been paid in cash to the grantee and then immediately
 reinvested by the grantee in the Corporation's common stock at the fair
 market value thereof on the applicable dividend payment date, and (2)
 that, once assumed issued, hypothetical shares resulting from assumed
 dividend reinvestment themselves paid cash dividends (at the same time
 and in the same amount as shares of the Corporation's outstanding
 common stock) which were reinvested in a similar manner.

     For purposes of this paragraph, the fair market value of a share
 of common stock of the Corporation means:

          (A)  The mean between the high and the low prices at which the
     common stock of the Corporation was traded if the common stock of
     the Corporation was then listed for trading on a national or
     regional securities exchange; or

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          (B)  The mean between the published bid and asked prices of
     the common stock, of the Corporation if the common stock of the
     Corporation was then traded on a bona fide over-the-counter market;
     or

          (C)  If the common stock of the Corporation was not traded on
     an exchange or on a bona fide over-the-counter market, a value
     determined by an appraiser selected by the Committee.

 In the event that the date of the exercise of a stock appreciation
 right is a date on which there is no trading of the common stock of the
 Corporation on a national or regional securities exchange or is a date
 for which there is no published bid and asked prices if the stock is
 traded on the over-the-counter market, such fair market value shall be
 determined by referring to the next preceding business day on which
 trading occurs or on which published prices are available.

     (e)  Additional Terms and Conditions.  The agreement or instrument
 evidencing the grant of stock appreciation rights may contain such
 other terms, provisions and conditions not inconsistent with the Plan
 as may be determined by the Committee in its sole discretion.

 7.  ADJUSTMENTS FOR CHANGES IN CAPITALIZATION, ETC.

     Stock appreciation rights shall be subject to adjustment by the
 Committee in its sole discretion as to the number, kind and date of
 grant value of shares or other consideration subject to such grants
 in the event of changes in the outstanding common stock by reason of
 stock dividends, stock splits, recapitalizations, reorganizations,
 mergers, consolidations, combinations, exchanges or other relevant
 changes in corporate structure or capitalization occurring after the
 date of the grant of any stock appreciation right, provided that if the

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 Corporation shall change itscommon stock into a greater or lesser
 number of shares through a stock dividend, stock split-up, or
 combination of shares, outstanding rights shall be adjusted
 proportionately, consistent with existing law and regulation, to
 prevent inequitable results.

 8.  EFFECT OF LIQUIDATION, MERGER, CONSOLIDATION OR OTHER EVENTS.

     Nothing contained in the Plan or in any stock appreciation right
 granted under the Plan shall in any way prohibit the Corporation from
 merging with or consolidating into another corporation, or from selling
 or transferring all or substantially all of its assets, or from
 distributing all or substantially all of its assets to its stockholders
 in liquidation, or from dissolving and terminating its corporate
 existence; and in any such event, all outstanding stock appreciation
 rights granted under the Plan shall be deemed to have been exercised at
 the time of any such merger, consolidation, sale or transfer of assets,
 liquidation, or dissolution, except to the extent that any agreement or
 undertaking of any party to such merger, consolidation, or sale or
 transfer of assets, or any plan pursuant to which such liquidation or
 dissolution is effected, shall make specific provision to continue such
 stock appreciation rights and the rights of such person or persons
 entitled to exercise such stock appreciation rights.

 9.  AMENDMENT AND TERMINATION OF PLAN.

     The Plan may be amended or terminated by the Board of Directors of
 the Corporation in any respect, provided, however, that the Board shall
 not exercise such authority in a manner adversely and significantly
 affecting rights previously granted unless the action taken is required
 to comply with any applicable law or regulation.

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 10.  MISCELLANEOUS.

     (a)  No Right to a Grant.  Neither the adoption of the Plan nor any
 action of the Board of Directors or of the Committee shall be deemed to
 give any employee any right to be selected as a participant or to be
 granted a stock appreciation right.

     (b)  Rights as Stockholder.  No person shall have any rights as a
 stockholder of the Corporation with respect to any shares covered by a
 stock appreciation right.

     (c)  Employment.  Nothing contained in this Plan shall be deemed to
 confer upon any employee any right of continued employment with the
 Corporation or any of its subsidiaries or to limit or diminish in any
 way the right of the Corporation or any such subsidiary to terminate
 his or her employment at any time with or without cause.

     (d)  Taxes.  the Corporation shall be entitled to deduct from any
 payment under the Plan the amount of any tax required by law to be
 withheld with respect to such payment or may require any participant to
 pay such amount to the Corporation prior to and as a condition of
 making such payment.

     (e)  Nontransferability.  No stock appreciation right shall be
 transferable except by will or the laws of descent and distribution.
 During the holder's lifetime, stock appreciation rights shall be
 exercisable only by such holder.

 11.  CHANGE OF CONTROL.

     (a)  Definition of "Change in Control."  For purposes of the Plan,
 a "Change in Control" means the happening of any of the following
 events:

          (i)  The acquisition by any individual, entity or group
     (within the meaning of Section 13(d)(3) or 14(d)(2) of the Exchange
     Act (a "Person") of beneficial ownership (within the meaning of

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     Rule 13d-3 promulgated under the Exchange Act) of 20% or more of
     either (A) the then outstanding shares of common stock of the
     Corporation (the "Outstanding Corporation Common Stock") or (B) the
     combined voting power of the then outstanding voting securities of
     the Corporation entitled to vote generally in the election of
     directors (the "Outstanding Corporation Voting Securities");
     excluding, however, the following: (1) any acquisition directly
     from the Corporation other than an acquisition by virtue of the
     exercise of a conversion privilege unless the security being so
     converted was itself acquired directly from the Corporation, (2)
     any acquisition by the Corporation, (3) any acquisition by any
     employee benefit plan (or related trust) sponsored or maintained by
     the Corporation or any entity controlled by the Corporation, (4)
     any acquisition pursuant to a transaction which complies with
     clauses (A), (B), and (C) of paragraph (iii) of this Section 11(a),

     (5) except as provided in paragraphs (iv) and (v), any acquisition
     by any of the Woodson Entities or any of the Smith Entities, or (6)
     any increase in the proportionate number of shares of Outstanding
     Corporation Common Stock or Outstanding Corporation Voting
     Securities beneficially owned by a Person to 20% or more of the
     shares of either of such classes of stock if such increase was
     solely the result of the acquisition of Outstanding Corporation
     Common Stock or Outstanding Corporation Voting Securities by the
     Corporation; provided, however, that this clause (6) shall not
     apply to any acquisition of Outstanding Corporation Common Stock or
     Outstanding Corporation Voting Securities not described in clauses
     (1), (2), (3), (4), or (5) of this paragraph (i) by the Person
     acquiring such shares which occurs after such Person had become the

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     beneficial owner of 20% or more of either the Outstanding
     Corporation Common Stock or Outstanding Corporation Voting
     Securities by reason of share purchases by the Corporation; or

         (ii)  A change in the composition of the Board such that the
     individuals who, as of the Effective Date, constitute the Board
     (such Board shall be hereinafter referred to as the "Incumbent
     Board") cease for any reason to constitute at least a majority of
     the Board; provided, however, for purposes of the Plan, that any
     individual who becomes a member of the Board subsequent to the
     Effective Date whose election, or nomination for election by the
     Corporation's shareholders, was approved by a vote of at least a
     majority of those individuals who are members of the Board and who
     were also members ofthe Incumbent Board (or deemed to be such
     pursuant to this proviso) shall be deemed to be and shall be
     considered as though such individual were a member of the Incumbent
     Board, but provided, further, that any such individual whose
     initial assumption of office occurs as a result of either an actual
     or threatened election contest (as such terms are used in Rule
     14a-11 of Regulation 14A promulgated under the Exchange Act) or
     other actual or threatened solicitation of proxies or consents by
     or on behalf of a Person other than the Board shall not be so
     deemed or considered as a member of the Incumbent Board; or

          (iii)  Consummation of a reorganization, merger or
     consolidation, or sale or other disposition of all or
     substantially all of the assets of the Corporation or the
     acquisition of the assets or securities of any other entity
     (a "Corporate Transaction"); excluding, however, such a Corporate
     Transaction pursuant to which (A) all or substantially all

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     of the individuals and entities who are the beneficial owners,
     respectively, of the Outstanding Corporation Common Stock and
     Outstanding Corporation Voting Securities immediately prior to such
     Corporate Transaction will beneficially own, directly or
     indirectly, more than 60% of, respectively, the outstanding shares
     of common stock and the combined voting power of the then
     outstanding voting securities entitled to vote generally in the

     election of directors, as the case may be, of the corporation
     resulting from such Corporate Transaction (including, without
     limitation, a corporation which as a result of such transaction
     owns the Corporation or all or substantially all of the
     Corporation's assets either directly or through one or more
     subsidiaries) (the "Resulting Corporation") in substantially the
     same proportions as their ownership, immediately prior to such
     Corporate Transaction, of the Outstanding Corporation Common Stock
     and Outstanding Corporation Voting Securities, as the case may be,
     (B) no Person (other than the Corporation, any employee benefit
     plan (or related trust) of the Corporation, any Woodson Entity, any
     Smith Entity, or such Resulting Corporation) will beneficially own,
     directly or indirectly, 20% or more of, respectively, the
     outstanding shares of common stock of the Resulting Corporation or
     the combined voting power of the then outstanding voting securities
     of such Resulting Corporation entitled to vote generally in the
     election of directors except to the extent that such ownership
     existed with respect to the Corporation prior to the Corporate
     Transaction, and (C) individuals who were members of the Incumbent
     Board will constitute at least a majority of the members of the
     board of directors of the Resulting Corporation; or

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          (iv)  The Woodson Entities acquire beneficial ownership of more
     than 35% of the Outstanding Corporation Common Stock or Outstanding
     Corporation Voting Securities or of the outstanding shares of common
     stock or the combined voting power of the then outstanding voting
     securities entitled to vote generally in the election of directors, as
     the case may be, of the Resulting Corporation; or

           (v)  The Smith Entities acquire beneficial ownership of more
     than 35% of the Outstanding Corporation Common Stock or Outstanding
     Corporation Voting Securities or of the outstanding shares of
     common stock or the combined voting power of the then outstanding
     voting securities entitled to vote generally in the election of
     directors, as the case may be, of the Resulting Corporation; or

          (vi)  The approval by the shareholders of the Corporation of a
     complete liquidation or dissolution of the Corporation.

     For purposes of this Section 11(a), the term "Woodson Entities"
 shall mean Aytchmonde P. Woodson, Leigh Yawkey Woodson and Alice
 Richardson Yawkey, members of their respective families and their
 respective descendants (the "Woodson Family"), heirs or legatees of any
 of the Woodson Family members, transferees by will, laws of descent or
 distribution or by operation of law of any of the foregoing (including
 of any such transferees) (including any executor or administrator of
 any estate of any of the foregoing), any trust established by any of
 Aytchmonde P. Woodson, Leigh Yawkey Woodson, or Alice Richardson
 Yawkey, whether pursuant to last will or otherwise, any partnership,
 trust or other entity established primarily for the benefit of, or any
 other Person the beneficial owners of which consist primarily of, any
 of the foregoing or any Affiliates or Associates of any of the

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 foregoing or any charitable trust or foundation to which any of the
 foregoing transfers or may transfer securities of the Corporation
 (including any beneficiary or trustee, partner, manager or director of
 any of the foregoing or any other Person serving any such entity in a
 similar capacity).

     For purposes of this Section 11(a), the term "Smith Entities" shall
 mean David B. Smith and Katherine S. Smith, members of their respective
 families and their respective descendants (the "Smith Family"), heirs
 or legatees of any of the Smith Family members, transferees by will,
 laws of descent or distribution or by operation of law of any of the
 foregoing (including of any such transferees) (including any executor
 or administrator of any estate of any of the foregoing), any trust
 established by either of David B. Smith or Katherine S. Smith, whether
 pursuant to last will or otherwise, any partnership, trust or other
 entity established primarily for the benefit of, or any other Person
 the beneficial owners of which consist primarily of, any of the
 foregoing or any Affiliates or Associates of any of the foregoing or
 any charitable trust or foundation to which any of the foregoing
 transfers or may transfer securities of the Corporation (including any
 beneficiary or trustee, partner, manager or director of any of the
 foregoing or any other Person serving any such entity in a similar
 capacity).

     For purposes of this Section 11(a), the terms "Affiliate" and
 "Associate" shall have the meanings ascribed to such terms in Rule
 12b-2 of the General Rules and Regulations under the Exchange Act as in
 effect on the date of this Plan.

     (b)  Effects of Change in Control.

     (i)  In the event of a Change in Control,

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          (A)  all stock appreciation rights ("SARs") outstanding on the
     date on which such Change in Control has occurred (the "Change in
     Control Date") shall, to the extent not then exercisable or vested,
     immediately become exercisable in full, and

          (B)  each grantee may elect, with respect to each SAR held by
     such grantee on the Change in Control Date (the grantee's "Election
     Right"), to surrender such SAR for an immediate lump sum cash
     payment in an amount equal to the product of (1) the number of
     shares of common stock of the Corporation ("Shares") then subject
     to the SAR as to which the election is being exercised, multiplied
     by (2) the excess, if any, of (a) the greater of (i) the Change in
     Control Price or (ii) the highest Fair Market Value of a Share on
     any day in the 60-day period ending on the Change in Control Date,
     over (b) the date of grant value of such SAR.  Upon exercise of a
     grantee's Election Right, the value of all hypothetical reinvested
     cash dividends associated with such SAR shall also be determined by
     the greater of (i) the Change in Control Price or (ii) the highest
     Fair Market Value of a Share on any day in the 60-day period ending
     on the Change in Control Date.   For purposes of this Section
     11(b), the "Change in Control Price" shall mean, if the Change in

     Control is the result of a tender or exchange offer or a Corporate
     Transaction (as defined in Section 11(a)(iii), the highest price
     per Share paid in such tender or exchange offer or Corporate
     Transaction.  To the extent that the consideration paid in any such
     transaction consists all or in part of securities or other noncash
     consideration, the value of such securities or other noncash
     consideration shall be determined in the sole discretion of the
     Committee.

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          (ii)  The exercise of an Election Right must be in writing,
     specify the  SAR or SARs and the number of Shares as to which the
     election is being exercised, and be delivered to the Secretary of
     the Corporation either in person or by depositing said notice and
     payment in the United States mail, postage pre-paid and addressed 
     to such officer at the Corporation's home office on or before the
     60th day following the Change in Control Date.

          (iii)  All payments due an grantee pursuant to the provisions
     of this Section 11(b) shall be made by the Corporation on or before
     the first to occur of (A) the date provided in this Plan for
     payment upon exercise of an SAR and (B) the 5th business day
     following the date on which the grantee's election has been
     delivered to the Corporation pursuant to Section 11(b)(ii).

          (iv)  Notwithstanding any other provision of this Section
     11(b), if the grant or the exercise of a grantee's Election Right
     or payment of cash provided for in this Section 11(b)would make a
     Change in Control transaction ineligible for pooling-of-interests
     accounting treatment under APB No. 16, that, but for the nature of
     such grant or exercise of Election Rights, would otherwise be
     eligible for such pooling-of-interests accounting treatment, the
     Committee shall have the right and authority to modify, eliminate,
     or terminate the Election Right to the extent necessary to preserve
     such pooling-of-interests accounting treatment.

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