AMERICAN ECO CORP
8-A12G, 1998-04-17
HAZARDOUS WASTE MANAGEMENT
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                          SECURITIES AND EXCHANGE COMMISSION
                               Washington, D.C.  20549

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


                                       FORM 8-A

                  FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                       PURSUANT TO SECTION 12(b) OR (g) OF THE
                           SECURITIES EXCHANGE ACT OF 1934



                               AMERICAN ECO CORPORATION
          ----------------------------------------------------------------
                (Exact Name of Registrant as Specified in its Charter)


                      Ontario, Canada                      52-1742490
          ----------------------------------------     -------------------
          (State of Incorporation or organization)       (I.R.S. Employer
                                                       Identification No.)


                  154 University Avenue
                      Toronto, Ontario                       M5H 3Y9
          ----------------------------------------     --------------------
          (Address of principal executive offices)         (Zip Code)


          Securities to be registered pursuant to Section 12(b) of the Act:

            Title of each class             Name of each exchange on which
            to be so registered             each class is to be registered 
          -------------------------        --------------------------------

                   None                                  None


          Securities to be registered pursuant to Section 12(g) of the Act:

                           Rights to Purchase Common Shares
          -----------------------------------------------------------------
                                 (Title of Class)


          <PAGE>


          ITEM 1.   DESCRIPTION OF REGISTRANT'S SECURITIES TO BE
                    REGISTERED.

                    On April  9, 1998, the  Board of Directors  of American
          Eco   Corporation  (the   "Company")  authorized   the  issuance,
          effective at 12:01 a.m. (Toronto time) on April 20, 1998, of  one
          common  share purchase  right  (a "Right")  for each  outstanding
          common  share, no par value,  of the Company  (a "Common Share"),
          outstanding  at  such  time  (the  "Record Time").    Each  Right
          entitles  the registered holder to purchase  from the Company one
          Common  Share at an initial  purchase price equal  to one-half of
          the  per  share market  price of  the  Common Shares,  subject to
          adjustment (the "Exercise Price").   The description and terms of
          the  Rights  are  set  forth  in  the   Shareholder  Rights  Plan
          Agreement, dated as  of April 9,  1998 (the "Rights  Agreement"),
          between the Company and  The CIBC Mellon Trust Company  as rights
          agent.

                    Under the Rights Agreement, a bidder making a Permitted
          Bid (as  defined below) for the Common Shares may not take up any
          shares  before the close  of business on  the 90th  day after the
          date of  the bid and  unless, on such date,  at least 50%  of the
          Common Shares not beneficially owned by the person making the bid
          and  certain  related parties  are  deposited, in  which  case, a
          public announcement of that fact must be made and the bid must be
          extended for ten  business days on  the same  terms.  The  Rights
          Agreement is designed to  encourage an offeror to proceed  by way
          of  a Permitted  Bid, or  to approach  the Board  with a  view to
          negotiation by creating the potential for substantial dilution of
          the  offeror's position.   The  Permitted Bid  provisions  of the
          Rights  Agreement are  to ensure  that in  any take-over  bid all
          shareholders are treated equally,  receive the maximum  available
          value  for  their  investment  and  are  given  adequate  time to
          properly assess the bid on a fully informed basis.

                    A Permitted Bid is defined in the Rights Agreement as a
          take-over bid made  by a  take-over bid circular  and which  also
          complies  with the  following requirements:  (1)  is made  to all
          holders of the Company's voting shares as registered on the books
          of the Company;  and (2) is open  for at least  90 days and  more
          than  50% of the voting shares of  the Company (other than shares
          beneficially owned  by the  offeror and certain  related parties)
          are deposited under the  bid and not withdrawn before  any shares
          may  be taken up and paid for and  if 50% of the voting shares of
          the Company are so  deposited and not withdrawn,  an announcement
          of such fact  is made and the bid remains  open for an additional
          ten business days.

                    Although  the Rights  Agreement is  currently effective
          with a record  date of April 20, 1998,  the Rights Agreement, and
          Rights issued in connection therewith, will terminate and will be
          void and of no  further force or effect  unless confirmed by  the


                                      2
     <PAGE>


          shareholders of the Company within  six months by the affirmative
          vote of  a  majority of  the votes  cast by  the shareholders  in
          person or by proxy.  One  proposal at the 1998 Annual and Special
          Meeting  of Shareholders  to  be held  on  May 28,  1998  will be
          confirmation of the Rights Agreement.  

                    Initially, the  Rights will be evidenced,  with respect
          to any of  the Common  Share certificates outstanding  as of  the
          Record  Time, by such Common  Share certificate.   From and after
          the  Separation  Time, the  Rights  will be  exercisable  and the
          registration and  transfer of Rights  shall be separate  from and
          independent of the  Common Shares.   The Separation  Time is  the
          close  of business on the eighth trading day after the earlier to
          occur of (i) the first date of public announcement by the Company
          or an Acquiring Person (as defined  below) that a person or group
          of affiliated  or associated  persons (collectively,  a "Person")
          has acquired (other than  pursuant to a Permitted Bid  or certain
          other exemptions under the Rights Agreement) beneficial ownership
          of  20% or  more of the  outstanding Common Shares  and any other
          shares in the capital  of the Company entitled to  vote generally
          in  the  election of  directors  (such  Person being  hereinafter
          referred  to  as  an  "Acquiring  Person"  and  such  date  being
          hereinafter referred to as the  "Stock Acquisition Date") or (ii)
          the date of the  commencement of or first public  announcement of
          an intention of any Person (other than the Company or  any of its
          subsidiaries) to commence a transaction the consummation of which
          would result in such Person becoming an Acquiring Person (or such
          later  date as  may  be determined  by  action  of the  Board  of
          Directors of the Company).

                    Until  the  Separation  Time  (i) the  Rights  will  be
          evidenced  by the  certificates  for Common  Shares  and will  be
          transferred with  and only  with such Common  Share certificates,
          (ii) new  certificates for Common Shares issued  after the Record
          Time will  contain a legend incorporating the Rights Agreement by
          reference,  and (iii)  the  surrender for  transfer  of any  such
          certificate for Common Shares outstanding on the Record Time will
          also constitute  the transfer of  the Rights associated  with the
          Common  Shares  represented  thereby.    Promptly  following  the
          Separation  Time, separate  certificates  evidencing  the  Rights
          ("Rights Certificates")  will be mailed  to holders of  record of
          the Common Shares as of the close of the Separation Time and such
          separate Rights Certificates alone will evidence the Rights.  

                    The Rights  are not  exercisable  until the  Separation
          Time  and will expire (the  "Expiration Time") on  the earlier of
          (i) the  close of  business on  April 9, 2008,  (ii) the  time at
          which  the Rights  are redeemed  by the  Company, or  (iii) if  a
          Person  has become  an Acquiring  Person, the  time at  which the
          Rights  (other than Rights which are void as described below) are
          exchanged  for Common Shares at  an exchange ratio  of one Common
          Share per  Right, as adjusted by the  Company; provided, however,
                                                         --------  -------


                                      3
     <PAGE>


          that the Rights Agreement and the Rights will  terminate and will
          be void and of no further force or effect unless (a) confirmed by
          the shareholders of the  Company  within six months from April 9,
          1998, and (b) reconfirmed by  the shareholders of the Company  at
          every third annual meeting following the 1998 Annual and  Special
          Meeting of Shareholders. 

                    The  Exercise Price  payable and  the number  of Common
          Shares  issuable  upon  exercise of  the  Rights  are  subject to
          adjustment from time to  time to prevent dilution in the event of
          (i)  a  stock dividend  on,  or a  subdivision,  consolidation or
          change of,  the  Common  Shares,  (ii) the  issuance  of  rights,
          options or warrants to subscribe for or purchase Common Shares at
          a price,  or  securities  convertible into  Common  Shares  at  a
          conversion price, less than the then current market price for the
          Common  Shares, or  (iii) a  distribution to  all holders  of the
          Common  Shares  of  evidences of  indebtedness,  cash  (excluding
          regular cash  dividends or  dividends payable in  Common Shares),
          assets or rights, options or  warrants (other than those referred
          to above).

                    With certain exceptions, no  adjustment in the Purchase
          Price will be  required unless such  adjustment would require  an
          increase or  decrease of at least  1% in the Exercise  Price.  No
          fractional Rights will be issued and, in lieu thereof, holders of
          the Rights  with regard  to  which such  fractional Rights  would
          otherwise be issuable will be paid an amount in cash equal to the
          same fraction of the current market value of a whole Right.

                    In the event that  following the Stock Acquisition Date
          (i) the Company consolidates  with, or merges with and  into, any
          other  person, (ii) any person  consolidates with the Company, or
          merges  with  and  into  the  Company  and  the  Company  is  the
          continuing  or  surviving  corporation  of such  merger  and,  in
          connection  therewith, all  or  part  of  the Common  Shares  are
          changed into or exchanged  for shares or other securities  of any
          other Person or  cash or any other property, or (iii) the Company
          sells or otherwise transfers in one  or more transactions, assets
          or earning power aggregating 50% or more of the assets or earning
          power  of the Company and its  subsidiaries, taken as a whole, to
          any other person,  each holder  of a Right,  except Rights  which
          previously have  been voided as indicated  below, will thereafter
          have  the right  to receive,  upon exercise  thereof at  the then
          current Exercise Price, that number of common shares of the other
          person which at the time  of such transaction will have a  market
          value equal to two times  the Exercise Price of the Right  for an
          amount in cash equal to the Exercise Price.

                    In  the  event that  any  Person  becomes an  Acquiring
          Person, each holder  of a Right,  other than Rights  beneficially
          owned by  the Acquiring Person  (which will thereafter  be void),
          will thereafter have the right to receive,  upon exercise thereof


                                      4
     <PAGE>


          at  the then current Exercise Price, that number of Common Shares
          having a market value  equal to two times  the Exercise Price  of
          the Right for an amount in cash equal to the Exercise Price.

                    Any  Rights  acquired  or  beneficially  owned  by  any
          Acquiring Person or certain related parties thereto will be void,
          and any holder  of such Rights will  thereafter have no  right to
          exercise such Rights under any provision of the Rights Agreement.

                    At any time prior  to the earlier  of (i) the close  of
          business  on   the  eighth   trading  day  following   the  Stock
          Acquisition Date, or (ii) the final Expiration Time, the Board of
          Directors of the Company  may redeem the then  outstanding Rights
          in  whole, but  not in  part,  at a  price of  $.0001 per  Right,
          subject to  adjustment (the  "Redemption Price").   Under certain
          circumstances set forth  in the Rights Agreement, the decision to
          redeem  would  require  the  concurrence of  a  majority  of  the
          Independent  Directors  (as  defined  in  the  Rights Agreement).
          Immediately  upon  any redemption  of  the Rights,  the  right to
          exercise  the Rights  will terminate  and the  only right  of the
          holders of the Rights will be to receive the Redemption Price.

                    The Company may, from time to time, make  amendments to
          the Rights Agreement to  correct clerical or typographical errors
          or  which are  required to  maintain the  validity of  the Rights
          Agreement as a  result of changes  in applicable law.   All other
          amendments after the Company's 1998 Annual and Special Meeting of
          Shareholders will require shareholder approval.

                    Issuance  of the  Common  Shares upon  exercise of  the
          Rights will be subject to any necessary registration requirements
          and  regulatory approvals.  Until a Right shall be exercised, the
          holder thereof, as such, will  have no right as a  shareholder of
          the  Company, including without limitation,  the right to vote or
          to receive dividends.

                    The Rights  Agreement which specifies the  terms of the
          Rights  and includes as Attachment 1 thereto a form of the Rights
          Certificate is attached  hereto as Exhibit 1  and is incorporated
          herein by reference.   The  foregoing description  of the  Rights
          does not purport to be complete and  is qualified in its entirety
          by reference to such Exhibit.


          ITEM 2.   EXHIBITS.

               1.   Rights Agreement,  dated as  of April 9,  1998, between
                    American  Eco  Corporation and  The  CIBC Mellon  Trust
                    Company,  which  includes as  Attachment 1  thereto the
                    form of a Rights Certificate.


                                      5
          <PAGE>


                                      SIGNATURE


                    Pursuant  to  the requirements  of  Section  12 of  the
          Securities Exchange Act  of 1934, the Registrant has  duly caused
          this Registration Statement  to be  signed on its  behalf by  the
          undersigned, thereto duly authorized.

                                        AMERICAN ECO CORPORATION
                                               

          Dated: April 13, 1998         By:   /s/ Michael E. McGinnis 
                                           ------------------------------
                                             Name:  Michael E. McGinnis
                                             Title: Chairman, President and
                                                    Chief Executive Officer




                                      6
          <PAGE>



                                    EXHIBIT INDEX



                 Exhibit                Description

                    1.        Rights Agreement, dated as  of April 9, 1998,
                              between American Eco Corporation and The CIBC
                              Mellon  Trust  Company,  which   includes  as
                              Attachment 1  thereto the  form  of a  Rights
                              Certificate.




                                      8







                          SHAREHOLDER RIGHTS PLAN AGREEMENT

                              DATED AS OF APRIL 9, 1998





                                       BETWEEN



                               AMERICAN ECO CORPORATION


                                         AND



                            THE CIBC MELLON TRUST COMPANY

                                   AS RIGHTS AGENT



     <PAGE>

                          SHAREHOLDER RIGHTS PLAN AGREEMENT

                                  TABLE OF CONTENTS
                                  -----------------

                                                                          Page
                                                                          ----


     ARTICLE 1 - INTERPRETATION  . . . . . . . . . . . . . . . . . . . . . .  1 
          1.1  Certain Definitions . . . . . . . . . . . . . . . . . . . . .  1 
          1.2  Currency  . . . . . . . . . . . . . . . . . . . . . . . . .   17 
          1.3  Headings  . . . . . . . . . . . . . . . . . . . . . . . . .   17 
          1.4  Calculation of Number and Percentage of Beneficial Ownership
               of Outstanding Voting Shares  . . . . . . . . . . . . . . .   17 
          1.5  Acting Jointly or in Concert  . . . . . . . . . . . . . . .   18
          1.6  Gennerally Accepted Accounting Principles . . . . . . . . .   18

     ARTICLE 2 - RIGHTS  . . . . . . . . . . . . . . . . . . . . . . . . .   18 
          2.1  Legend on Common Share Certificates . . . . . . . . . . . .   18 
          2.2  Initial Exercise Price  . . . . . . . . . . . . . . . . . .   19 
          2.3  Adjustments to Exercise Price . . . . . . . . . . . . . . .   22 
          2.4  Corporation Covenants . . . . . . . . . . . . . . . . . . .   27
          2.5  Consolidation, Merger or Sale or Transfer of
               Assets or Earning Power . . . . . . . . . . . . . . . . . .   28
          2.6  Date on Which Exercise Is Effective . . . . . . . . . . . .   31 
          2.7  Execution, Authentication, Delivery and Dating of Rights
               Certificates  . . . . . . . . . . . . . . . . . . . . . . .   31
          2.8  Registration, Transfer and Exchange . . . . . . . . . . . .   32 
          2.9  Mutilated, Destroyed, Lost and Stolen Rights Certificates .   33 
          2.10 Persons Deemed Owners of Rights . . . . . . . . . . . . . .   33 
          2.11 Delivery and Cancellation of Certificates . . . . . . . . .   34 
          2.12 Agreement of Rights Holders . . . . . . . . . . . . . . . .   34 
          2.13 Rights Certificate Holder Not Deemed a Shareholder  . . . .   35 

     ARTICLE 3 - ADJUSTMENTS TO THE RIGHTS . . . . . . . . . . . . . . . .   35 
          3.1  Flip-in Event . . . . . . . . . . . . . . . . . . . . . . .   35 
          3.2  Exchange Option . . . . . . . . . . . . . . . . . . . . . .   37 
          3.3  Fiduciary Duties of the Board of Directors of the
               Corporation . . . . . . . . . . . . . . . . . . . . . . . .   38 

     ARTICLE 4 - THE RIGHTS AGENT  . . . . . . . . . . . . . . . . . . . .   38 
          4.1  General . . . . . . . . . . . . . . . . . . . . . . . . . .   38 
          4.2  Merger, Amalgamation or Consolidation or Change of Name of
               Rights Agent  . . . . . . . . . . . . . . . . . . . . . . .   39 
          4.3  Duties of Rights Agent  . . . . . . . . . . . . . . . . . .   40 
          4.4  Change of Rights Agent  . . . . . . . . . . . . . . . . . .   42 

     ARTICLE 5 - MISCELLANEOUS . . . . . . . . . . . . . . . . . . . . . .   42 
          5.1  Redemption and Waiver . . . . . . . . . . . . . . . . . . .   42 
          5.2  Notice of Certain Events  . . . . . . . . . . . . . . . . .   44 
          5.3  Expiration  . . . . . . . . . . . . . . . . . . . . . . . .   45 
          5.4  Issuance of New Rights Certificates . . . . . . . . . . . .   46 
          5.5  Supplements and Amendments  . . . . . . . . . . . . . . . .   46 
          5.6  Fractional Rights and Fractional Shares . . . . . . . . . .   47 
          5.7  Rights of Action  . . . . . . . . . . . . . . . . . . . . .   48 
          5.8  Regulatory Approvals  . . . . . . . . . . . . . . . . . . .   48 
          5.9  Declaration as to Non-Canadian and Non-U.S. Holders . . . .   48 
          5.10 Notices . . . . . . . . . . . . . . . . . . . . . . . . . .   49 
          5.11 Costs of Enforcement  . . . . . . . . . . . . . . . . . . .   50 
          5.12 Successors  . . . . . . . . . . . . . . . . . . . . . . . .   50 
          5.13 Benefits of this Agreement  . . . . . . . . . . . . . . . .   50 
          5.14 Governing Law . . . . . . . . . . . . . . . . . . . . . . .   50 
          5.15 Severability  . . . . . . . . . . . . . . . . . . . . . . .   50
          5.16 Effective Date  . . . . . . . . . . . . . . . . . . . . . .   51
          5.17 Reconfirmation  . . . . . . . . . . . . . . . . . . . . . .   51 
          5.18 Determinations and Actions by the Board of Directors  . . .   51 
          5.19 Time of the Essence . . . . . . . . . . . . . . . . . . . .   51 
          5.20 Regulatory Approvals  . . . . . . . . . . . . . . . . . . .   51 
          5.21 Execution in Counterparts . . . . . . . . . . . . . . . . .   52 


     <PAGE>


                          SHAREHOLDER RIGHTS PLAN AGREEMENT


     MEMORANDUM OF AGREEMENT dated as of April 9, 1998 between American ECO
     Corporation (the "Corporation"), a corporation incorporated under the
     Business Corporations Act (Ontario) and The CIBC Mellon Trust Company, a
     trust company incorporated under the laws of Canada (the "Rights
     Agent"); 

     WHEREAS the Board of Directors of the Corporation has determined that it is
     in the best interests of the Corporation to adopt a shareholder rights plan
     to insure, to the extent possible, that all shareholders of the Corporation
     are treated fairly in connection with any take-over bid for the
     Corporation;

     AND WHEREAS in order to implement the adoption of a shareholder rights plan
     as established by this Agreement, the Board of Directors has:

          (a)  authorized the issuance, effective at 12:01 a.m. (Toronto time)
               on the Effective Date (as hereinafter defined), of one Right (as
               hereinafter defined) in respect of each Common Share (as
               hereinafter defined) outstanding at 12:01 a.m. (Toronto time) on
               the Effective Date (the "Record Time"); and

          (b)  authorized the issuance of one Right in respect of each Common
               Share of the Corporation issued after the Record Time and prior
               to the earlier of the Separation Time (as hereinafter defined)
               and the Expiration Time (as hereinafter defined);

     AND WHEREAS each Right entitles the holder thereof, after the Separation
     Time, to acquire securities of the Corporation pursuant to the terms and
     subject to the conditions set forth herein;

     AND WHEREAS the Corporation desires to appoint the Rights Agent to act on
     behalf of the Corporation and the holders of Rights, and the Rights Agent
     is willing to so act, in connection with the issuance, transfer, exchange
     and replacement of Rights Certificates (as hereinafter defined), the
     exercise of Rights and other matters referred to herein;

     NOW THEREFORE, in consideration of the premises and the respective
     covenants and agreements set forth herein, and subject to such covenants
     and agreements, the parties hereby agree as follows:


                              ARTICLE 1 - INTERPRETATION

     1.1  CERTAIN DEFINITIONS
          -------------------

     For purposes of this Agreement, the following terms have the meanings
     indicated:

          (a)  "ACQUIRING PERSON" shall mean any Person who, together with all
               Affiliates and Associates of such Person, is the Beneficial Owner
               of 20% or more of the outstanding Voting Shares; provided however
               that the term "Acquiring Person" shall not include:

               (i)       the Corporation or any Subsidiary of the Corporation;

               (ii)      any employee benefit plan of the Corporation or any
                         Subsidiary of the Corporation, or any entity holding
                         Voting Shares for or pursuant to the terms of any such
                         plan;

               (iii)     any Person who becomes the Beneficial Owner of 20% or
                         more of the outstanding Voting Shares solely as a
                         result of one or any combination of (A) a Voting Share
                         Reduction, (B) Permitted Bid Acquisitions, (C) an
                         Exempt Acquisition, or (D) Pro Rata Acquisitions;
                         provided however that if a Person becomes the
                         Beneficial Owner of 20% or more of the outstanding
                         Voting Shares by reason of one or any combination of
                         the operation of (A), (B), (C) or (D) above and such
                         Person's Beneficial Ownership of Voting Shares
                         thereafter increases by more than 1% of the number of
                         Voting Shares outstanding (other than pursuant to one
                         or any combination of a Voting Share Reduction, a
                         Permitted Bid Acquisition, an Exempt Acquisition or a
                         Pro Rata Acquisition), then as of the date such Person
                         becomes the Beneficial Owner of such additional Voting
                         Shares, such Person shall become an "Acquiring Person";

               (iv)      for a period of ten days after the Disqualification
                         Date (as defined below), any Person who becomes the
                         Beneficial Owner of 20% or more of the outstanding
                         Voting Shares as a result of such Person becoming
                         disqualified from relying on Subsection 1.1(f)(vi)
                         solely because such Person or the Beneficial Owner of
                         such Voting Shares is making or has announced an
                         intention to make a Take-over Bid, either alone or by
                         acting jointly or in concert with any other Person. 
                         For the purposes of this definition, "Disqualification
                         Date" means the first date of public announcement that
                         any Person is making or has announced an intention to
                         make a Take-over Bid;

               (v)       an underwriter or member of a banking or selling group
                         that becomes the Beneficial Owner of 20% or more of the
                         Voting Shares in connection with a distribution to the
                         public of securities of the Corporation pursuant to an
                         underwriting agreement with the Corporation; or

               (vi)      a Person (a "Grandfathered Person") who is the
                         Beneficial Owner of 20% or more of the outstanding
                         Voting Shares determined as at the Record Time,
                         provided however that this exception shall not be, and
                         shall cease to be, applicable to a Grandfathered Person
                         in the event that such Grandfathered Person shall,
                         after the Record Time, become the Beneficial Owner of
                         additional Voting Shares of the Corporation that
                         increases its Beneficial Ownership of Voting Shares by
                         more than 1% of the number of Voting Shares outstanding
                         as at the Record Time (other than pursuant to one or
                         any combination of a Voting Share Reduction, a
                         Permitted Bid Acquisition, an Exempt Acquisition or a
                         Pro Rata Acquisition);

          (b)  "AFFILIATE" when used to indicate a relationship with a Person
               means a Person that directly, or indirectly through one or more
               intermediaries, controls or is controlled by, or is under common
               control with, such specified Person;

          (c)  "AGREEMENT" shall mean this shareholder rights plan agreement
               dated as of April 9, 1998 between the Corporation and the Rights
               Agent, as the same may be further amended or supplemented from
               time to time; "hereof", "herein", "hereto" and similar
               expressions mean and refer to this Agreement as a whole and not
               to any particular part of this Agreement;

          (d)  "ANNUAL CASH DIVIDEND" shall mean cash dividends paid in any
               fiscal year of the Corporation to the extent that such cash
               dividends do not exceed, in the aggregate, the greatest of: 

               (i)  200% of the aggregate amount of cash dividends declared
                    payable by the Corporation on its Common Shares in its
                    immediately preceding fiscal year;

               (ii) 300% of the arithmetic mean of the aggregate amounts of the
                    annual cash dividends declared payable by the Corporation on
                    its Common Shares in its three immediately preceding fiscal
                    years; and 

              (iii) 100% of the aggregate consolidated net income of the
                    Corporation, before extraordinary items, for its
                    immediately preceding fiscal year;

          (e)  "ASSOCIATE", when used to indicate a relationship with a Person
               means:

               (i)       any body corporate, partnership or other organization
                         of which such specified Person is a director, officer
                         or partner;

               (ii)      any trust or other estate (A) in which such specified
                         Person has a beneficial interest and with whom such
                         specified Person is acting jointly or in concert, or
                         (B) in which such specified Person has a 10% or greater
                         Beneficial Ownership or beneficial interest, or (C) as
                         to which such specified Person serves as trustee or in
                         a similar fiduciary capacity provided however that a
                         Person shall not be an Associate of a trust by reason
                         only of the fact that such Person serves as trustee or
                         in a similar capacity in relation to such trust if such
                         Person is duly licensed to carry on the business of a
                         trust company under applicable laws or if the ordinary
                         business of such Person includes the management of
                         investment funds for unaffiliated investors and such
                         Person acts as trustee or in a similar capacity in
                         relation to such trust in the ordinary course of such
                         business;

               (iii)     any relative of such specified Person or any person to
                         whom such specified Person is married, or any person
                         with whom such specified Person is living in a conjugal
                         relationship outside marriage, or any relative of such
                         spouse or other person who has the same home as such
                         specified Person;

               (iv)      any Person who is a director, officer, partner or
                         trustee of such specified Person or of any body
                         corporate, partnership or other organization (other
                         than the Corporation or any wholly-owned Subsidiary of
                         the Corporation) which is an Affiliate or Associate of
                         such specified Person;

               (v)       any body corporate of which such specified Person owns,
                         directly or indirectly, at law or in equity, shares or
                         securities currently convertible into or exchangeable
                         for shares carrying more than 10% of the voting rights
                         attaching to all voting shares of the body corporate
                         for the time being outstanding or a currently
                         exercisable option or right to purchase such shares or
                         such convertible or exchangeable securities; and

               (vi)      any Person who is an Associate within the meaning
                         ascribed to such term in (i) Rule 12b-2 of the General
                         Rules and Regulations under the 1934 Exchange Act as in
                         effect on the date hereof or (ii) the Securities Act
                         (Ontario) as in effect on the date hereof.

          (f)  A Person is deemed the "BENEFICIAL OWNER" and to have "BENEFICIAL
               OWNERSHIP" of, and to "BENEFICIALLY OWN":

               (i)  any securities as to which such Person or any of such
                    Person's Affiliates or Associates is or may be deemed to be
                    the direct or indirect Beneficial Owner and, for this
                    purpose, a Person shall be deemed to be a Beneficial Owner
                    of all securities:

                    (A)  owned by a partnership of which such Person or any of
                         such Person's Affiliates or Associates is a partner;

                    (B)  owned by a trust of which such Person or any of such
                         Person's Affiliates or Associates is a beneficiary
                         (whether their interest in the trust is present or
                         future and/or vested or contingent);

                    (C)  owned jointly or in common with others; and

                    (D)  of which such Person or any of such Person's Affiliates
                         or Associates is deemed to be the Beneficial Owner
                         pursuant to the OBCA or the Securities Act (Ontario)
                         for the purposes of insider trading or take-over bids
                         or pursuant to Rule 13d-3 or 13d-5 under the 1934
                         Exchange Act, whether or not such laws or regulations
                         apply to such Person or such Person's Affiliates or
                         Associates and whether or not such beneficial owner or
                         deemed beneficial owner is the holder of record of such
                         securities;

               (ii) any securities as to which such Person or any of such
                    Person's Affiliates or Associates has, directly or
                    indirectly:

                    (A)  the right to become a Beneficial Owner within the
                         meaning of Subsection 1.1(f)(i) (whether such right is
                         exercisable immediately or after the passage of time or
                         upon the occurrence of a contingency or payment of
                         installments or otherwise) pursuant to any agreement,
                         arrangement, pledge or understanding or otherwise,
                         whether or not in writing (other than (1) customary
                         agreements with and between underwriters and/or banking
                         group and/or selling group members with respect to a
                         bona fide distribution to the public of securities, and
                         (2) pledges of securities in the ordinary course of
                         business that meet all of the conditions specified in
                         Rule 13d-3(d)(3) under the 1934 Exchange Act or upon
                         the exercise of conversion rights, exchange rights,
                         rights (other than the Rights), warrants or options or
                         otherwise; or

                    (B)  the right to vote (whether such right is exercisable
                         immediately or after the passage of time or upon the
                         occurrence of a contingency or payment of installments
                         or otherwise) pursuant to any agreement, arrangement or
                         understanding or otherwise whether or not in writing
                         (other than (1) pledges of securities in the ordinary
                         course of business that meet all of the circumstances
                         specified in Rule 13-3(d)(3) under the 1934 Exchange
                         Act other than the condition in Rule 13d-3(d)(3)(ii),
                         and (2) a pledge agreement with a registered securities
                         dealer relating to the extension of credit for
                         purchases of securities on margin in the ordinary
                         course of the dealer's business); and

               (iii)     any securities which are Beneficially Owned within the
                         meaning of Subsection 1.1(f)(i) or (ii) by any other
                         Person with which such Person or any of such Person's
                         Affiliates or Associates is acting jointly or in
                         concert or has any agreement, arrangement or
                         understanding whether or not in writing (other than (1)
                         customary agreements with and between underwriters
                         and/or banking group and/or selling group members with
                         respect to a bona fide distribution to the public of
                         securities, and (2) pledges of securities in the
                         ordinary course of business that meet all of the
                         conditions specified in Rule 13d-3(d)(3) under the 1934
                         Exchange Act) with respect to or for the purpose of,
                         acquiring, holding, voting or disposing of any Voting
                         Shares or acquiring, holding or disposing of a
                         significant portion of the property or assets of the
                         Corporation or any Subsidiary of the Corporation
                         determined on the basis of a consolidation of the
                         accounts of the Corporation and its Subsidiaries and
                         any securities which are Beneficially Owned (within the
                         meaning of Clauses (i) or (ii) of this Subsection
                         1.1(f) by any Affiliate or Associate of such other
                         Person or any Person that is acting jointly or in
                         concert with, or has any agreement, arrangement or
                         understanding of the type referred to above with, such
                         other Person;

               provided however that a Person shall NOT be deemed the
               "Beneficial Owner" or to have "Beneficial Ownership" of, or to
               "Beneficially Own", any security:

               (iv) solely because such security has been deposited or tendered
                    pursuant to a tender or exchange offer or Take-over Bid made
                    by such Person or any of such Person's Affiliates or
                    Associates until the earlier of such deposited or tendered
                    security being accepted unconditionally for payment or
                    exchange or being taken up and paid for;

               (v)  solely because such Person or any of such Person's
                    Affiliates or Associates has or shares the power to vote or
                    direct the voting of such security pursuant to a revocable
                    proxy given in response to a public proxy solicitation made
                    pursuant to and in accordance with, the applicable rules and
                    regulations under the OBCA, the Securities Act (Ontario) and
                    the 1934 Exchange Act, except if such power (or the
                    arrangements relating thereto) is then reportable under
                    Section 101 of the Securities Act (Ontario) or under Item 6
                    of Schedule 13D under the 1934 Exchange Act;

               (vi) solely because such Person (hereinafter in this Subsection
                    1.1(f)(vi) referred to as the "MANAGER"), being principally
                    engaged in the business of managing investment funds for
                    other Persons (which others may include and be limited to
                    one or more employee benefit plans or pension plans) who are
                    not Affiliates or Associates of the Manager and who do not
                    act jointly or in concert with the Manager as part of the
                    Manager's duties as agent for fully managed accounts, holds
                    or exercises voting or dispositive power over such security
                    and such voting or dispositive power over such security is
                    held in the ordinary course of such business in the
                    performance of the duties of the Manager for the account of
                    the other Person; provided however that:

                    (A)  such security shall be deemed in such case to be
                         Beneficially Owned by such other Persons;

                    (B)  the Manager does not, individually, Beneficially Own in
                         excess of five percent of the outstanding Voting
                         Shares, determined after giving effect to the
                         provisions of this Subsection 1.1(f)(vi); and

                    (C)  the Manager has not participated in, has not made, does
                         not propose or intend to make and is not participating
                         in or making a recommendation in respect of, a Take-
                         over Bid or any plan or proposal relating thereto or
                         resulting therein, either alone or by acting jointly or
                         in concert with any other Person;

                    and provided further that notwithstanding the foregoing the
                    Board of Directors shall have the right to and may
                    determine, acting in good faith, that conditions exist which
                    should disentitle the Manager from relying on this
                    Subsection 1.1(f)(vi) and, in such event, the Manager's
                    Beneficial Ownership of securities shall be determined
                    without reference to this Subsection 1.1(f)(vi); or

              (vii) solely because such Person (hereinafter in this
                    Subsection 1.1(f)(vii) referred to as the "TRUST
                    COMPANY") holds or exercises voting or dispositive
                    power over such securities provided that:

                    (A)  the Trust Company is licensed to carry on the business
                         of a trust company under applicable law and as such
                         acts as trustee or administrator or in similar capacity
                         in relation to the estates of deceased or incompetent
                         Persons (each an "ESTATE ACCOUNT") or in relation to
                         other accounts (each an "OTHER ACCOUNT") and holds such
                         voting or dispositive power over such security in the
                         ordinary course of such duties for the estate of any
                         such deceased or incompetent Person or for such other
                         accounts; and

                    (B)  the Trust Company has not participated in, has not
                         made, does not propose or intend to make and is not
                         participating in, a Take-over Bid or any plan or
                         proposal relating thereto or resulting therein, either
                         alone or by acting jointly or in concert with any other
                         Person;

                    and provided further that notwithstanding the foregoing the
                    Board of Directors shall have the right to and may
                    determine, acting in good faith, that conditions exist which
                    should disentitle the Trust Company from relying on this
                    Subsection 1.1(f)(vii) and in such event the Trust Company's
                    Beneficial Ownership of securities shall be determined
                    without reference to this Subsection 1.1(f)(vii); or

             (viii) solely because such Person is a client of the same
                    Manager as another Person on whose account the Manager
                    holds or exercises voting or dispositive power over
                    such security, or solely because such Person is an
                    Estate Account or an Other Account of the same Trust
                    Company as another Person on whose account the Trust
                    Company holds or exercises voting or dispositive power
                    over such security; or

               (ix) held for or pursuant to the terms of any employee benefit
                    plan, deferred profit sharing plan, stock participating plan
                    or trust for the benefit of employees of the Corporation or
                    any Subsidiary of the Corporation; or

               (x)  solely because any such Person, any of such Person's
                    Affiliates or Associates or any other Person referred to in
                    clause (iii) of this definition has an agreement,
                    arrangement or understanding, whether or not in writing (but
                    other than of the nature otherwise referred to in this
                    Subsection 1.1(f)), with respect to a shareholder proposal
                    or a matter or matters to come before a particular meeting
                    of shareholders, including the election of directors; or

               (xi) issuable upon exercise of Rights at any time prior to the
                    occurrence of a Flip-in Event; or

              (xii) issuable upon exercise of Rights from and after the
                    occurrence of a Flip-in Event, which Rights were
                    acquired by such Person or any of such Person's
                    Affiliates or Associates prior to the Separation Time
                    or pursuant to Section 2.1 ("Original Rights") or
                    pursuant to Subsection 2.3(e) in connection with an
                    adjustment made with respect to Original Rights.

                    For the purposes of this Agreement, in determining the
                    percentage of the outstanding Voting Shares with
                    respect to which a Person is or is deemed to be the
                    Beneficial Owner, all Voting Shares as to which such
                    Person is deemed the Beneficial Owner shall be deemed
                    outstanding.

          (g)  "BOARD OF DIRECTORS" shall mean the board of directors of the
               Corporation or any duly constituted and empowered committee
               thereof;

          (h)  "BUSINESS DAY" shall mean any day other than a Saturday, Sunday
               or a day on which banking institutions in Toronto are authorized
               or obligated by law to close;

          (i)  "CANADIAN DOLLAR EQUIVALENT" of any amount which is expressed in
               United States Dollars shall mean, on any date, the Canadian
               dollar equivalent of such amount determined by multiplying such
               amount by the U.S. - Canadian Exchange Rate in effect on such
               date;

          (j)  "CANADIAN - U.S. EXCHANGE RATE" shall mean, on any date, the
               inverse of the U.S. - Canadian Exchange Rate in effect on such
               date;

          (k)  "CLOSE OF BUSINESS" on any given date shall mean the time on such
               date (or, if such date is not a Business Day, the time on the
               next succeeding Business Day) at which the principal transfer
               office in Toronto of the transfer agent for the Common Shares of
               the Corporation (or, after the Separation Time, the principal
               transfer office in Toronto of the Rights Agent) is closed to the
               public; 

          (l)  "COMMON SHARES" shall mean the common shares in the capital of
               the Corporation;

          (m)  "COMPETING PERMITTED BID" shall mean a Take-over Bid that:

               (i)       is made after a Permitted Bid has been made and prior
                         to the expiry of the Permitted Bid;

               (ii)      satisfies all components of the definition of a
                         Permitted Bid other than the requirements set out in
                         Subsection 1.1(ai)(ii) of the definition of a Permitted
                         Bid; and

               (iii)     contains, and the take-up and payment for securities
                         tendered or deposited is subject to, an irrevocable and
                         unqualified condition that no Voting Shares will be
                         taken up or paid for pursuant to the Take-over Bid
                         prior to the close of business on a date that is no
                         earlier than the later of: (A) the 60th day after the
                         date on which the earliest Permitted Bid which preceded
                         the Competing Permitted Bid was made; and (B) 21 days
                         after the date of the Take-over Bid constituting the
                         Competing Permitted Bid; and only if at the date that
                         the Voting Shares are to be taken up more than 50% of
                         the Voting Shares held by Independent Shareholders
                         shall have been deposited or tendered pursuant to the
                         Competing Permitted Bid and not withdrawn;

          (n)  "CONTROLLED" a corporation is "controlled" by another Person if:

               (i)  securities entitled to vote in the election of directors
                    carrying more than 50% of the votes for the election of
                    directors are held, directly or indirectly, by or for the
                    benefit of the other Person; and

               (ii) the votes carried by such securities are entitled, if
                    exercised, to elect a majority of the board of directors of
                    such corporation; and "controls", "controlling" and "under
                    common control with" shall be interpreted accordingly;

          (o)  "CO-RIGHTS AGENTS" shall have the meaning ascribed thereto in
               Subsection 4.1(a);

          (p)  "DISPOSITION DATE" shall have the meaning ascribed thereto in
               Subsection 5.1(e);

          (q)  "DIVIDEND REINVESTMENT ACQUISITION" shall mean an acquisition of
               Voting Shares pursuant to a Dividend Reinvestment Plan;

          (r)  "DIVIDEND REINVESTMENT PLAN" shall mean a regular dividend
               reinvestment or other plan of the Corporation made available by
               the Corporation to holders of its securities where such plan
               permits the holder to direct that some or all of:

               (i)       dividends paid in respect of shares of any class of the
                         Corporation;

               (ii)      proceeds of redemption of shares of the Corporation;

               (iii)     interest paid on evidences of indebtedness of the
                         Corporation; or

               (iv)      optional cash payments; be applied to the purchase from
                         the Corporation of Voting Shares; 

          (s)  "ELECTION TO EXERCISE" shall have the meaning ascribed thereto in
               Subsection 2.2(d)(ii);

          (t)  "EFFECTIVE DATE" shall mean April 20, 1998;

          (u)  "EXEMPT ACQUISITION" shall mean a share acquisition in respect of
               which the Board of Directors has waived the application of
               Section 3.1;

          (v)  "EXERCISE PRICE" shall mean, as of any date, the price at which a
               holder may purchase securities issuable upon exercise of one
               whole Right which, until adjustment thereof in accordance with
               the terms hereof, shall be one-half of the then current Market
               Price;

          (w)  "EXPANSION FACTOR" shall have the meaning ascribed thereto in
               Subsection 2.3(a)(iv)(a);

          (x)  "EXPIRATION TIME" shall mean the close of business on that date
               which is the earliest of the of termination of this Agreement
               pursuant to Section 5.16 or, if this Agreement is confirmed
               pursuant to Section 5.16, the date of termination of this
               Agreement pursuant to Section 5.17 or, if this Agreement is
               reconfirmed pursuant to Section 5.17, the close of business on
               the tenth anniversary of the Effective Date;

          (y)  "FLIP-IN EVENT" shall mean a transaction in or pursuant to which
               any Person becomes an Acquiring Person;

          (z)  "HOLDER" shall have the meaning ascribed thereto in Section 2.10;

          (aa) "INDEPENDENT DIRECTORS" shall mean any member of the Board of
               Directors of the Corporation, while such person is a member of
               the Board of Directors, who is not an Acquiring Person, or an
               Affiliate or Associate of an Acquiring Person, or a
               representative or nominee of an Acquiring Person or of any such
               Affiliate or Associate, and was a member of the Board of
               Directors prior to the date hereof, and any successor of an
               Independent Director while such successor is a member of the
               Board of Directors, who is not an Acquiring Person or an
               Affiliate or an Associate of an Acquiring Person or a
               representative or nominee of an Acquiring Person or of any such
               Affiliate or Associate and is recommended or elected to succeed
               the Independent Director by a majority of the Independent
               Directors;

          (ab) "INDEPENDENT SHAREHOLDERS" shall mean holders of Voting Shares,
               other than:

               (i)       any Acquiring Person;

               (ii)      any Offeror (other than any Person who, by virtue of
                         Subsection 1.1(f)(iii)(b), is not deemed to
                         Beneficially Own the Voting Shares held by such
                         Person);

               (iii)     any Affiliate or Associate of any Acquiring Person or
                         Offeror; any Person acting jointly or in concert with
                         any Acquiring Person or Offeror; and

               (iv)      any employee benefit plan, deferred profit sharing
                         plan, stock participation plan and any other similar
                         plan or trust for the benefit of employees of the
                         Corporation unless the beneficiaries of the plan or
                         trust direct the manner in which the Voting Shares are
                         to be voted or direct whether the Voting Shares are to
                         be tendered to a Take-over Bid;

          (ac) "MARKET PRICE" per share of any securities on any date of
               determination shall mean the average of the daily closing prices
               per share of such securities (determined as described below) on
               each of the 20 consecutive Trading Days through and including the
               Trading Day immediately preceding such date; provided however
               that if an event of a type analogous to any of the events
               described in Section 2.3 hereof shall have caused the closing
               prices used to determine the Market Price on any Trading Days not
               to be fully comparable with the closing price on such date of
               determination or, if the date of determination is not a Trading
               Day, on the immediately preceding Trading Day, each such closing
               price so used shall be appropriately adjusted in a manner
               analogous to the applicable adjustment provided for in Section
               2.3 hereof in order to make it fully comparable with the closing
               price on such date of determination or if the date of
               determination is not a Trading Day, on the immediately preceding
               Trading Day.  The closing price per share of any securities on
               any date shall be:

               (i)       the closing board lot sale price or, in case no such
                         sale takes place on such date, the average of the
                         closing bid and ask prices for each of such securities
                         as reported by the principal Canadian stock exchange
                         (as determined by volume of trading) on which such
                         securities are listed or admitted to trading;

               (ii)      if for any reason none of such prices is available on
                         such day or the securities are not listed or posted for
                         trading on a Canadian stock exchange, the last sale
                         price or, in case no such sale takes place on such
                         date, the average of the closing bid and ask prices for
                         each of such securities as reported by the principal
                         national United States securities exchange (as
                         determined by volume of trading) on which such
                         securities are listed or admitted to trading;

               (iii)     if for any reason none of such prices is available on
                         such day or the securities are not listed or admitted
                         to trading on a Canadian stock exchange or a national
                         United States securities exchange, the last sale price
                         or, in case no sale takes place on such date, the
                         average of the high bid and low ask prices for each of
                         such securities in the over-the-counter market, as
                         quoted by any recognized reporting system then in use;
                         or 

               (iv)      if for any reason none of such prices is available on
                         such day or the securities are not listed or admitted
                         to trading on a Canadian stock exchange or a national
                         United States securities exchange or quoted by any such
                         reporting system, the average of the closing bid and
                         ask prices as furnished by a recognized professional
                         market maker making a market in the securities;
                         provided however that if for any reason none of such
                         prices is available on such day, the closing price per
                         share of such securities on such date means the fair
                         value per share of such securities on such date as
                         determined by a nationally recognized investment dealer
                         or investment banker.  The Market Price shall be
                         expressed in Canadian dollars and, if initially
                         determined in respect of any day forming part of the 20
                         consecutive Trading Day period in question in United
                         States dollars, such amount shall be translated into
                         Canadian dollars on such date at the Canadian Dollar
                         Equivalent thereof.  Notwithstanding the foregoing,
                         where the Board of Directors is satisfied that the
                         Market Price of securities as determined herein was
                         affected by an anticipated actual Take-over Bid or by
                         improper manipulation, the Board of Directors may
                         determine the Market Price of securities, such
                         determination to be based upon a finding as to the
                         price at which a holder of securities of that class
                         could reasonably have expected to dispose of his
                         securities immediately prior to the relevant date
                         excluding any change in price reasonably attributable
                         to the anticipated or actual Take-over Bid or to the
                         improper manipulation.

          (ad) "1933 SECURITIES ACT" shall mean the Securities Act of 1933 of
               the United States, as amended, and the rules and regulations
               thereunder as now in effect or as the same may from time to time
               be amended, re-enacted or replaced;

          (ae) "1934 EXCHANGE ACT" shall mean the Securities Exchange Act of
               1934 of the United States, as amended, and the rules and
               regulations thereunder as now in effect or as the same may from
               time to time be amended, re-enacted or replaced;

          (af) "NOMINEE" shall have the meaning ascribed thereto in Subsection
               2.2(c);

          (ag) "OBCA" shall mean the Business Corporations Act, (Ontario) as
               amended and the regulations made thereunder, and any comparable
               or successor laws or regulations thereto;

          (ah) "OFFER TO ACQUIRE" shall include:

               (i)  an offer to purchase or a solicitation of an offer to sell
                    Voting Shares, or a public announcement of an intention to
                    make such an offer or solicitation; and

               (ii) an acceptance of an offer to sell Voting Shares, whether or
                    not such offer to sell has been solicited; or any
                    combination thereof, and the Person accepting an offer to
                    sell shall be deemed to be making an Offer to Acquire to the
                    Person that made the offer to sell;

          (ai) "OFFEROR" shall mean a Person who has announced and has not
               withdrawn, an intention to make or who has made and has not
               withdrawn, a Take-over Bid, other than a Person who has completed
               a Permitted Bid, a Competing Permitted Bid or an Exempt
               Acquisition; 

          (aj) "OFFEROR'S SECURITIES" shall mean Voting Shares Beneficially
               Owned by an Offeror on the date of the Offer to Acquire;

          (ak) "PERMITTED BID" shall mean a Take-over Bid made by an Offeror by
               way of take-over bid circular which also complies with the
               following additional provisions:

               (i)       the Take-over Bid is made to all holders of Voting
                         Shares as registered on the books of the Corporation,
                         other than the Offeror;

               (ii)      the Take-over Bid contains, and the take-up and payment
                         for securities tendered or deposited is subject to, an
                         irrevocable and unqualified provision that no Voting
                         Shares will be taken up or paid for pursuant to the
                         Take-over Bid prior to the close of business on the
                         date which is not less than 90 days following the date
                         of the Take-over Bid and only if at such date more than
                         50% of the Voting Shares held by Independent
                         Shareholders shall have been deposited or tendered
                         pursuant to the Take-over Bid and not withdrawn;

               (iii)     unless the Take-over Bid is withdrawn, the Take-over
                         Bid contains an irrevocable and unqualified provision
                         that Voting Shares may be deposited pursuant to such
                         Take-over Bid at any time during the period of time
                         described in Subsection (ai)(ii) and that any Voting
                         Shares deposited pursuant to the Take-over Bid may be
                         withdrawn until taken up and paid for; and

               (iv)      the Take-over Bid contains an irrevocable and
                         unqualified provision that in the event that the
                         deposit condition set forth in Subsection (ai)(ii) is
                         satisfied the Offeror will make a public announcement
                         of that fact and the Take-over Bid will remain open for
                         deposits and tenders of Voting Shares for not less than
                         ten Business Days from the date of such public
                         announcement;

          (al) "PERMITTED BID ACQUISITION" shall mean an acquisition of Voting
               Shares made pursuant to a Permitted Bid or a Competing Permitted
               Bid;

          (am) "PERSON" shall include any individual, firm, partnership,
               association, trust, body corporate, corporation, unincorporated
               organization, syndicate, governmental entity or other entity;

          (an) "PRO RATA ACQUISITION" shall mean an acquisition by a Person of
               Voting Shares pursuant to:

               (i)       a Dividend Reinvestment Acquisition;

               (ii)      a stock dividend, stock split or other event in respect
                         of securities of the Corporation of one or more
                         particular classes or series pursuant to which such
                         Person becomes the Beneficial Owner of Voting Shares on
                         the same pro rata basis as all other holders of
                         securities of the particular class, classes or series;

               (iii)     the acquisition or the exercise by the Person of only
                         those rights to purchase Voting Shares distributed to
                         that Person in the course of a distribution to all
                         holders of securities of the Corporation of one or more
                         particular classes or series pursuant to a rights
                         offering or pursuant to a prospectus; or

               (iv)      a distribution of Voting Shares or securities
                         convertible into or exchangeable for Voting Shares (and
                         the conversion or exchange of such convertible or
                         exchangeable securities), made pursuant to a prospectus
                         or by way of a private placement, provided that the
                         Person does not thereby acquire a greater percentage of
                         such Voting Shares, or securities convertible into or
                         exchangeable for Voting Shares, so offered than the
                         Person's percentage of Voting Shares Beneficially Owned
                         immediately prior to such acquisition;

          (ao) "RECORD TIME" shall have the meaning set forth in the second
               whereas clause;

          (ap) "RIGHT" shall mean a right to purchase a Common Share of the
               Corporation upon the terms and subject to the conditions set
               forth in this Agreement;

          (aq) "RIGHTS CERTIFICATE" shall mean the certificates representing the
               Rights after the Separation Time, which shall be substantially in
               the form attached hereto as Attachment 1;

          (ar) "RIGHTS REGISTER" shall have the meaning ascribed thereto in
               Subsection 2.8(a);

          (as) "SECTION 2.5 EVENT" shall have the meaning ascribed thereto in
               Subsection 2.5;

          (at) "SECURITIES ACT" shall mean the Securities Act, Ontario as
               amended and the regulations thereunder and any comparable or
               successor laws or regulations thereto;

          (au) "SEPARATION TIME" shall mean the close of business on the eighth
               Trading Day after the earlier of:

               (i)  the Stock Acquisition Date; and

               (ii) the date of the commencement of or first public announcement
                    of the intent of any Person (other than the Corporation or
                    any Subsidiary of the Corporation) to commence a Take-over
                    Bid (other than a Permitted Bid or a Competing Permitted
                    Bid), or such later time as may be determined by the Board
                    of Directors, provided that, (A) if any Take-over Bid
                    referred to in this Subsection (au)(ii) expires, is
                    cancelled, terminated or otherwise withdrawn prior to the
                    Separation Time, such Take-over Bid shall be deemed, for the
                    purposes of this definition, never to have been made; and
                    (B) if the Board of Directors determines to waive the
                    application of Section 3.1 to a Flip-in Event, the
                    Separation Time in respect of such Flip-in Event shall be
                    deemed never to have occurred.

          (av) "STOCK ACQUISITION DATE" shall mean the first date of public
               announcement (which, for purposes of this definition, shall
               include, without limitation, a report filed pursuant to section
               101 of the Securities Act, Ontario or Section 13(d) of the 1934
               Exchange Act) by the Corporation or an Acquiring Person stating
               that an Acquiring Person has become such;

          (aw) "SUBSIDIARY" a corporation shall be deemed to be a Subsidiary of
               another corporation if:

               (i)  it is controlled by:

                    (A)  that other; or

                    (B)  that other and one or more corporations each of which
                         is controlled by that other; or

                    (C)  two or more corporations each of which is controlled by
                         that other; or

               (ii) it is a Subsidiary of a corporation that is that other's
                    Subsidiary;

          (ax) "TAKE-OVER BID" shall mean an Offer to Acquire Voting Shares or
               securities convertible into Voting Shares if, assuming that the
               Voting Shares or convertible securities subject to the Offer to
               Acquire are acquired and are Beneficially Owned at the date of
               such Offer to Acquire by the Person making such Offer to Acquire,
               such Voting Shares (including Voting Shares that may be acquired
               upon conversion of securities convertible into Voting Shares)
               together with the Offeror's Securities, constitute in the
               aggregate 20% or more of the outstanding Voting Shares at the
               date of the Offer to Acquire;

          (ay) "TRADING DAY", when used with respect to any securities, shall
               mean a day on which the principal Canadian or United States stock
               exchange or quotation system (including NASDAQ) on which such
               securities are listed or admitted for trading is open for the
               transaction of business or if the securities are not listed or
               admitted for trading on any Canadian stock exchange, a Business
               Day;

          (az) "U.S.- CANADIAN EXCHANGE RATE" shall mean, on any date:

               (i)  if on such date the Bank of Canada sets an average noon spot
                    rate of exchange for the conversion of one United States
                    dollar into Canadian dollars, such rate; and

               (ii) in any other case, the rate for such date for the conversion
                    of one United States dollar into Canadian dollars calculated
                    in such manner as may be determined by the Board of
                    Directors from time to time acting in good faith;

          (ba) "U.S. DOLLAR EQUIVALENT" of any amount which is expressed in
               Canadian dollars shall mean, on any date, the United States
               dollar equivalent of such amount determined by multiplying such
               amount by the Canadian - U.S. Exchange Rate in effect on such
               date;

          (bb) "VOTING SHARE REDUCTION" shall mean an acquisition or redemption
               by the Corporation of Voting Shares which, by reducing the number
               of Voting Shares outstanding, increases the proportionate number
               of Voting Shares Beneficially Owned by any Person to 20% or more
               of the Voting Shares then outstanding; and

          (bc) "VOTING SHARES" shall mean the Common Shares and any other shares
               in the capital of the Corporation entitled to vote generally in
               the election of directors. 

     1.2  CURRENCY
          --------

     All sums of money which are referred to in this Agreement are expressed in
     lawful money of Canada unless otherwise specified.

     1.3  HEADINGS
          --------

     The division of this Agreement into Articles, Sections, Subsections,
     Clauses, Paragraphs, Subparagraphs or other portions hereof and the
     insertion of headings, subheadings and a table of contents are for
     convenience of reference only and shall not affect the construction or
     interpretation of this Agreement.

     1.4  CALCULATION OF NUMBER AND PERCENTAGE OF BENEFICIAL OWNERSHIP OF
          ---------------------------------------------------------------
          OUTSTANDING VOTING SHARES
          -------------------------

     For purposes of this Agreement, the percentage of Voting Shares
     Beneficially Owned by a Person, shall be and shall be deemed to be the
     product (expressed as a percentage) determined by the formula:   100 x A 
                                                                           ---
                                                                            B 

     Where     A    =    the number of votes for the election of all directors
                         generally attaching to the Voting Shares Beneficially
                         Owned by such Person; and

               B    =    the number of votes for the election of directors
                         generally attaching to all outstanding Voting Shares.

     Where any Person is deemed to Beneficially Own unissued Voting Shares, such
     Voting Shares shall be deemed to be outstanding for the purpose of
     calculating the percentage of Voting Shares Beneficially Owned by such
     Person.

     1.5  ACTING JOINTLY OR IN CONCERT
          ----------------------------

     For the purposes hereof, a Person is acting jointly or in concert with
     every Person who acquires or offers to acquire Voting Shares as a result of
     any agreement, commitment or understanding, whether formal or informal,
     with the first Person or any Associate or Affiliate thereof (other than
     customary agreements with and between underwriters and/or banking group
     members and/or selling group members with respect to a public offering or
     private placement of securities or pledges of securities in the ordinary
     course of business).

     1.6  GENERALLY ACCEPTED ACCOUNTING PRINCIPLES
          ----------------------------------------

     Wherever in this Agreement reference is made to generally accepted
     accounting principles, such reference shall be deemed to be the
     recommendations at the relevant time of the Canadian Institute of Chartered
     Accountants or the American Institute of Certified Public Accountants'
     Accounting Principles Board and the Financial Accounting Standards Board,
     as the case may be, or any successor institute, applicable on a
     consolidated basis (unless otherwise specifically provided herein to be
     applicable on an unconsolidated basis) as at the date on which a
     calculation is made or required to be made in accordance with generally
     accepted accounting principles.  Where the character or amount of any asset
     or liability or item of revenue or expense is required to be determined, or
     any consolidation or other accounting computation is required to be made
     for the purposes of this Agreement or any document, such determination or
     calculation shall, to the extent applicable and except as otherwise
     specified herein or as otherwise agreed in writing by the parties, be made
     in accordance with generally accepted accounting principles applied on a
     consistent basis.


                                  ARTICLE 2 - RIGHTS

     2.1  LEGEND ON COMMON SHARE CERTIFICATES
          -----------------------------------

     Certificates representing Common Shares which are issued after the Record
     Time but prior to the earlier of the Separation Time and the Expiration
     Time, shall also evidence one Right for each Common Share represented
     thereby and shall have impressed on, printed on, written on or otherwise
     affixed to them the following legend:

          Until the Separation Time (as defined in the Shareholder Rights
          Agreement referred to below), this certificate also evidences rights
          of the holder described in a Shareholder Rights Plan Agreement dated
          as of April 9, 1998 (the "Shareholder Rights Agreement") between
          American ECO Corporation (the "Corporation") and The CIBC Mellon Trust
          Company, the terms of which are incorporated herein by reference and a
          copy of which is on file at the head office of the Corporation.  Under
          certain circumstances set out in the Shareholder Rights Agreement, the
          rights may expire, may become null and void or may be evidenced by
          separate certificates and no longer evidenced by this certificate. 
          The Corporation will mail or arrange for the mailing of a copy of the
          Shareholder Rights Agreement to the holder of this certificate without
          charge as soon as practicable after the receipt of a written request
          therefor.

     Certificates representing Common Shares that are issued and outstanding at
     or after the Record Time shall also evidence one Right for each Common
     Share represented thereby, notwithstanding the absence of the foregoing
     legend, until the close of business on the earlier of the Separation Time
     and the Expiration Time.

     2.2  INITIAL EXERCISE PRICE; EXERCISE OF RIGHTS; DETACHMENT OF RIGHTS
          ----------------------------------------------------------------

          (a)  Subject to adjustment as herein set forth, each Right shall
               entitle the holder thereof, from and after the Separation Time
               and prior to the Expiration Time, to purchase one Common Share
               for the Exercise Price (and the Exercise Price and number of
               Common Shares are subject to adjustment as set forth below). 
               Notwithstanding any other provision of this Agreement, any Rights
               held by the Corporation or any of its Subsidiaries shall be void.

          (b)  Until the Separation Time:

               (i)  the Rights shall not be exercisable and no Right may be
                    exercised; and

               (ii) each Right shall be evidenced by the certificate for the
                    associated Common Share registered in the name of the holder
                    thereof (which certificate shall also be deemed to represent
                    a Rights Certificate) and shall be transferable only
                    together with, and shall be transferred by a transfer of,
                    such associated Common Share.

          (c)  From and after the Separation Time and prior to the Expiration
               Time:

               (i)  the Rights shall be exercisable; and

               (ii) the registration and transfer of Rights shall be separate
                    from and independent of Common Shares.

          Promptly following the Separation Time, the Corporation shall prepare
          and the Rights Agent shall mail to each holder of record of Common
          Shares as of the Separation Time (other than an Acquiring Person and,
          in respect of any Rights Beneficially Owned by such Acquiring Person
          which are not held of record by such Acquiring Person, the holder of
          record of such Rights (a "NOMINEE")) at such holder's address as shown
          by the records of the Corporation (the Corporation hereby agreeing to
          furnish copies of such records to the Rights Agent for this purpose):

               (a)  a Rights Certificate appropriately completed, representing
                    the number of Rights held by such holder at the Separation
                    Time and having such marks of identification or designation
                    and such legends, summaries or endorsements printed thereon
                    as the Corporation may deem appropriate and as are not
                    inconsistent with the provisions of this Agreement, or as
                    may be required to comply with any law, rule or regulation
                    or with any rule or regulation of any self-regulatory
                    organization, stock exchange or quotation system on which
                    the Rights may from time to time be listed or traded, or to
                    conform to usage; and

               (b)  a disclosure statement describing the Rights, provided that
                    a Nominee shall be sent the materials provided for in (a)
                    and (b) in respect of all Common Shares of the Corporation
                    held of record by it which are not Beneficially Owned by an
                    Acquiring Person.

          (d)  Rights may be exercised, in whole or in part, on any Business Day
               after the Separation Time and prior to the Expiration Time by
               submitting to the Rights Agent:

               (i)  the Rights Certificate evidencing such Rights;

               (ii) an election to exercise such Rights (an "Election to
                    Exercise") substantially in the form attached to the Rights
                    Certificate appropriately completed and executed by the
                    holder or his executors or administrators or other personal
                    representatives or his or their legal attorney duly
                    appointed by an instrument in writing in form and executed
                    in a manner satisfactory to the Rights Agent; and

              (iii) payment by certified cheque, banker's draft or money
                    order payable to the order of the Corporation, of a sum
                    equal to the Exercise Price multiplied by the number of
                    Rights being exercised and a sum sufficient to cover
                    any transfer tax or charge which may be payable in
                    respect of any transfer involved in the transfer or
                    delivery of Rights Certificates or the issuance or
                    delivery of certificates for Common Shares in a name
                    other than that of the holder of the Rights being
                    exercised.

          (e)  Upon receipt of a Rights Certificate, together with a completed
               Election to Exercise executed in accordance with Subsection
               2.2(d)(ii), which does not indicate that such Right is null and
               void as provided by Subsection 3.1(b), and payment as set forth
               in Subsection 2.2(d)(iii), the Rights Agent (unless otherwise
               instructed by the Corporation in the event that the Corporation
               is of the opinion that the Rights cannot be exercised in
               accordance with this Agreement) will thereupon promptly:

               (i)  requisition from the transfer agent certificates
                    representing the number of such Common Shares to be
                    purchased (the Corporation hereby irrevocably authorizing
                    its transfer agent to comply with all such requisitions);

               (ii) when appropriate, requisition from the Corporation the
                    amount of cash to be paid in lieu of issuing fractional
                    Common Shares;

              (iii) after receipt of the certificates referred to in
                    Subsection 2.2(e)(i), deliver the same to or upon the
                    order of the registered holder of such Rights
                    Certificates, registered in such name or names as may
                    be designated by such holder;

               (iv) when appropriate, after receipt, deliver the cash referred
                    to in Subsection 2.2(e)(ii) to or to the order of the
                    registered holder of such Rights Certificate; and

               (v)  tender to the Corporation all payments received on exercise
                    of the Rights.

          (f)  In case the holder of any Rights shall exercise less than all the
               Rights evidenced by such holder's Rights Certificate, a new
               Rights Certificate evidencing the Rights remaining unexercised
               (subject to the provisions of Subsection 5.5(a)) will be issued
               by the Rights Agent to such holder or to such holder's duly
               authorized assigns.

          (g)  The Corporation covenants and agrees that it shall:

               (i)       take all such action as may be necessary and within its
                         power to ensure that all Common Shares delivered upon
                         exercise of Rights shall, at the time of delivery of
                         the certificates for Common Shares (subject to payment
                         of the Exercise Price), be duly and validly authorized,
                         executed, issued and delivered as fully paid and non-
                         assessable; 

               (ii)      take all such action as may be necessary and within its
                         power to comply with the requirements of the OBCA, the
                         Securities Act  and the securities laws or comparable
                         legislation of each of the provinces of Canada and any
                         other applicable law, rule or regulation, in connection
                         with the issuance and delivery of the Rights
                         Certificates and the issuance of any Common Shares upon
                         exercise of Rights, including for greater certainty and
                         without limitation, registration of the Common Shares
                         under the 1933 Securities Act;

               (iii)     use reasonable efforts to cause all Common Shares
                         issued upon exercise of Rights to be listed on the
                         stock exchanges on which such Common Shares were traded
                         immediately prior to the Stock Acquisition Date; 

               (iv)      cause to be reserved and kept available out of the
                         authorized and unissued Common Shares, the number of
                         Common Shares that, as provided in this Agreement, will
                         from time to time be sufficient to permit the exercise
                         in full of all outstanding Rights; 

               (v)       pay when due and payable, if applicable, any and all
                         Canadian and United States federal, provincial and
                         municipal transfer taxes and charges (not including any
                         income or capital taxes of the holder or exercising
                         holder or any liability of the Corporation to withhold
                         tax) which may be payable in respect of the original
                         issuance or delivery of the Rights Certificates or
                         certificates for Common Shares to be issued upon
                         exercise of any Rights, provided that the Corporation
                         shall not be required to pay any transfer tax or charge
                         which may be payable in respect of any transfer
                         involved in the transfer or delivery of Rights
                         Certificates or the issuance or delivery of
                         certificates for Common Shares in a name other than
                         that of the holder of the Rights being transferred or
                         exercised; and 

               (vi)      after the Separation Time, except as permitted by
                         Section 5.1, not take (or permit any Subsidiary to
                         take) any action if at the time such action is taken it
                         is reasonably foreseeable that such action shall
                         diminish substantially or otherwise eliminate the
                         benefits intended to be afforded by the Rights.

     2.3  ADJUSTMENTS TO EXERCISE PRICE; NUMBER OF RIGHTS
          -----------------------------------------------

     The Exercise Price, the number and kind of securities subject to purchase
     upon exercise of each Right and the number of Rights outstanding are
     subject to adjustment from time to time as provided in this Section 2.3.

          (a)  If the Corporation shall at any time after the date of this
               Agreement:

               (i)       declare or pay a dividend on Common Shares payable in
                         Common Shares (or other securities exchangeable for or
                         convertible into or giving a right to acquire Common
                         Shares or other securities of the Corporation) other
                         than pursuant to any Dividend Reinvestment Plan;

               (ii)      subdivide or change the then outstanding Common Shares
                         into a greater number of Common Shares;

               (iii)     consolidate or change the then outstanding Common
                         Shares into a smaller number of Common Shares; or

               (iv)      issue any Common Shares (or other securities
                         exchangeable for or convertible into or giving a right
                         to acquire Common Shares or other securities of the
                         Corporation) in respect of, in lieu of or in exchange
                         for existing Common Shares except as otherwise provided
                         in this Section 2.3;

               the Exercise Price and the number of Rights outstanding or if the
               payment or effective date therefor shall occur after the
               Separation Time, the securities purchasable upon exercise of
               Rights shall be adjusted as of the payment or effective date in
               the manner set forth below.

               If the Exercise Price and number of Rights outstanding are to be
               adjusted:

               (a)  the Exercise Price in effect after such adjustment shall be
                    equal to the Exercise Price in effect immediately prior to
                    such adjustment divided by the number of Common Shares (or
                    other capital stock) (the "EXPANSION FACTOR") that a holder
                    of one Common Share immediately prior to such dividend,
                    subdivision, change, consolidation or issuance would hold
                    thereafter as a result thereof; and

               (b)  each Right held prior to such adjustment shall become that
                    number of Rights equal to the Expansion Factor;

               and the adjusted number of Rights shall be deemed to be
               distributed among the Common Shares with respect to which the
               original Rights were associated (if they remain outstanding) and
               the shares issued in respect of such dividend, subdivision,
               change, consolidation or issuance, so that each such Common Share
               (or other capital stock) shall have exactly one Right associated
               with it.  For greater certainty, if the securities purchasable
               upon exercise of Rights are to be adjusted, the securities
               purchasable upon exercise of each Right after such adjustment
               shall be the securities that a holder of the securities
               purchasable upon exercise of one Right immediately prior to such
               dividend, subdivision, change, consolidation or issuance would
               hold thereafter as a result of such dividend, subdivision,
               change, consolidation or issuance.  If, after the Record Time and
               prior to the Expiration Time, the Corporation shall issue any
               shares other than Common Shares in a transaction of the type
               described in Subsection 2.3(a)(i) or (iv), such shares shall be
               treated herein as nearly equivalent to Common Shares as may be
               practicable and appropriate under the circumstances and the
               Corporation and the Rights Agent agree to amend this Agreement in
               order to effect such treatment.  If Corporation shall at any time
               after the Record Time and prior to the Separation Time issue any
               Common Shares other than in a transaction referred to in this
               Subsection 2.3(a), each such Common Share so issued shall
               automatically have one new Right associated with it, which Right
               shall be evidenced by the certificate representing such
               associated Common Share.

          (b)  If the Corporation shall at any time after the Record Time and
               prior to the Separation Time fix a Record Time for the issuance
               of rights, options or warrants to all holders of Common Shares
               entitling them (for a period expiring within 45 calendar days
               after such Record Time) to subscribe for or purchase Common
               Shares (or securities convertible into or exchangeable for or
               carrying a right to purchase Common Shares) at a price per Common
               Share (or, if a security convertible into or exchangeable for or
               carrying a right to purchase or subscribe for Common Shares,
               having a conversion, exchange or exercise price, including the
               price required to be paid to purchase such convertible or
               exchangeable security or right per share) less than the Market
               Price per Common Share on such Record Date, the Exercise Price to
               be in effect after such Record Time shall be determined by
               multiplying the Exercise Price in effect immediately prior to
               such Record Time by a fraction:

               (i)  the numerator of which shall be the number of Common Shares
                    outstanding on such Record Time, plus the number of Common
                    Shares that the aggregate offering price of the total number
                    of Common Shares so to be offered (and/or the aggregate
                    initial conversion, exchange or exercise price of the
                    convertible or exchangeable securities or rights so to be
                    offered, including the price required to be paid to purchase
                    such convertible or exchangeable securities or rights) would
                    purchase at such Market Price per Common Share; and

               (ii) the denominator of which shall be the number of Common
                    Shares outstanding on such Record Time, plus the number of
                    additional Common Shares to be offered for subscription or
                    purchase (or into which the convertible or exchangeable
                    securities or rights so to be offered are initially
                    convertible, exchangeable or exercisable).

               In case such subscription price may be paid by delivery of
               consideration, part or all of which may be in a form other than
               cash, the value of such consideration shall be as determined in
               good faith by the Board of Directors, whose determination shall
               be described in a statement filed with the Rights Agent and shall
               be binding on the Rights Agent and the holders of Rights.  Such
               adjustment shall be made successively whenever such a Record Time
               is fixed, and in the event that such rights, options or warrants
               are not so issued, or if issued, are not exercised prior to the
               expiration thereof, the Exercise Price shall be readjusted to the
               Exercise Price which would then be in effect if such Record Time
               had not been fixed, or to the Exercise Price which would be in
               effect based upon the number of Common Shares (or securities
               convertible into, or exchangeable or exercisable for Common
               Shares) actually issued upon the exercise of such rights, options
               or warrants, as the case may be.

               For the purposes of this Agreement, the granting of the right to
               purchase Common Shares (whether from treasury or otherwise)
               pursuant to the Dividend Reinvestment Plan or any employee
               benefit, stock option or similar plans shall be deemed not to
               constitute an issue of rights, options or warrants by the
               Corporation; provided however that, in all such cases, the right
               to purchase Common Shares is at a price per share of not less
               than 95% of the current market price per share (determined as
               provided in such plans) of the Common Shares.

          (c)  If the Corporation shall at any time after the Record Time and
               prior to the Separation Time fix a Record Time for the making of
               a distribution to all holders of Common Shares (including any
               such distribution made in connection with a merger or
               amalgamation) of evidences of indebtedness, cash (other than an
               annual cash dividend or a dividend referred to in Section
               2.3(a)(i), but including any dividend payable in other securities
               of the Corporation), assets or rights, options or warrants
               (excluding those referred to in Subsection 2.3(b)), the Exercise
               Price to be in effect after such Record Time shall be determined
               by multiplying the Exercise Price in effect immediately prior to
               such Record Time by a fraction:

               (i)  the numerator of which shall be the Market Price per Common
                    Share on such Record Time, less the fair market value (as
                    determined in good faith by the Board of Directors, whose
                    determination shall be described in a statement filed with
                    the Rights Agent and shall be binding on the Rights Agent
                    and the holders of Rights), on a per share basis, of the
                    portion of the cash, assets, evidences of indebtedness,
                    rights, options or warrants so to be distributed; and

               (ii) the denominator of which shall be such Market Price per
                    Common Share.

               Such adjustments shall be made successively whenever such a
               Record Time is fixed and in the event that such a distribution is
               not so made, the Exercise Price shall be adjusted to be the
               Exercise Price which would have been in effect if such Record
               Time had not been fixed.

          (d)  Notwithstanding anything herein to the contrary, no adjustment in
               the Exercise Price shall be required unless such adjustment would
               require an increase or decrease of at least one per cent in the
               Exercise Price; provided however that any adjustments which by
               reason of this Subsection 2.3(d) are not required to be made
               shall be carried forward and taken into account in any subsequent
               adjustment.  All calculations under Section 2.3 shall be made to
               the nearest cent or to the nearest ten-thousandth of a share. 
               Notwithstanding the first sentence of this Subsection 2.3(d), any
               adjustment required by Section 2.3 shall be made no later than
               the earlier of:

               (i)  three years from the date of the transaction which gives
                    rise to such adjustment; or

               (ii) the Expiration Date.

          (e)  If the Corporation shall at any time after the Record Time and
               prior to the Separation Time issue any shares (other than Common
               Shares) or rights, options or warrants to subscribe for or
               purchase any such shares or securities convertible into or
               exchangeable for any such capital stock, in a transaction
               referred to in Subsection 2.3(a)(i) or (iv), if the Board of
               Directors acting in good faith determines that the adjustments
               contemplated by Subsections 2.3(a), (b) and (c) in connection
               with such transaction will not appropriately protect the
               interests of the holders of Rights, the Board of Directors may
               determine what other adjustments to the Exercise Price, number of
               Rights and/or securities purchasable upon exercise of Rights
               would be appropriate and notwithstanding Subsections 2.3(a), (b)
               and (c), such adjustments, rather than the adjustments
               contemplated by Subsections 2.3(a), (b) and (c), shall be made. 
               Subject to the prior consent of the holders of the Voting Shares
               or the Rights obtained as set forth in Subsection 5.5(b) or (c),
               the Corporation and the Rights Agent shall have authority to
               amend this Agreement as appropriate to provide for such
               adjustments.

          (f)  Each Right originally issued by the Corporation subsequent to any
               adjustment made to the Exercise Price hereunder shall evidence
               the right to purchase, at the adjusted Exercise Price, the number
               of Common Shares purchasable from time to time hereunder upon
               exercise of a Right immediately prior to such issue, all subject
               to further adjustment as provided herein.

          (g)  Irrespective of any adjustment or change in the Exercise Price or
               the number of Common Shares issuable upon the exercise of the
               Rights, the Rights Certificates theretofore and thereafter issued
               may continue to express the Exercise Price per Common Share and
               the number of Common Shares which were expressed in the initial
               Rights Certificates issued hereunder. 

          (h)  In any case in which this Section 2.3 shall require that an
               adjustment in the Exercise Price shall be made effective as of a
               Record Time for a specified event, the Corporation may elect to
               defer until the occurrence of such event the issuance to the
               holder of any Right exercised after such Record Time the number
               of Common Shares and other securities of the Corporation, if any,
               issuable upon such exercise over and above the number of Common
               Shares and other securities of the Corporation, if any, issuable
               upon such exercise on the basis of the Exercise Price in effect
               prior to such adjustment; provided however that the Corporation
               shall deliver to such holder an appropriate instrument evidencing
               such holder's right to receive such additional shares (fractional
               or otherwise) or other securities upon the occurrence of the
               event requiring such adjustment.

          (i)  Notwithstanding anything contained in this Section 2.3 to the
               contrary, the Corporation shall be entitled to make such
               reductions in the Exercise Price, in addition to those
               adjustments expressly required by this Section 2.3, as and to the
               extent that in their good faith judgment the Board of Directors
               shall determine to be advisable, in order that any:

               (i)       consolidation or subdivision of Common Shares;

               (ii)      issuance (wholly or in part for cash) of Common Shares
                         or securities that by their terms are convertible into
                         or exchangeable for Common Shares;

               (iii)     stock dividends; or

               (iv)      issuance of rights, options or warrants referred to in
                         this Section 2.3;

               hereafter made by the Corporation to holders of its Common 
               Shares, shall not be taxable to such shareholders.

     2.4  CORPORATION COVENANTS
          ---------------------

          (a)  The Corporation covenants and agrees that, after the Separation
               Time, it shall not, except as permitted or contemplated by
               Sections 3.1, 3.2, 5.1 and 5.5, take (nor shall it permit any of
               its Subsidiaries to take) any action if at the time such action
               is taken it is reasonably foreseeable that such action will
               diminish substantially or otherwise eliminate the benefits
               intended to be afforded by the Rights.

          (b)  The Corporation covenants and agrees that it shall not, at any
               time after the Separation Time:

               (i)       consolidate with any other Person (other than a
                         Subsidiary of the Corporation in a transaction which
                         complies with Subsection 2.4(a)),

               (ii)      merge with or into any other Person (other than a
                         Subsidiary of the Corporation in a transaction which
                         complies with Subsection 2.4(a)), or

               (iii)     sell or transfer (or permit any of its Subsidiaries to
                         sell or transfer), in one or more transactions, assets
                         or earning power aggregating more than 50% of the
                         assets or earning power of the Corporation and its
                         Subsidiaries (taken as a whole) to any other Person or
                         Persons (other than the Corporation and/or any of its
                         Subsidiaries in one or more transactions each of which
                         complies with Subsection 2.4(a)):

                    if

                    (A)  at the time of or immediately after such consolidation,
                         merger or sale there are any rights, warrants or other
                         instruments or securities outstanding or agreements in
                         effect which would substantially diminish or otherwise
                         eliminate the benefits intended to be afforded by the
                         Rights; or

                    (B)  prior to, simultaneously with or immediately after such
                         consolidation, merger or sale, the shareholders of the
                         Person who constitutes, or would constitute, the
                         "Principal Party" for the purposes of Subsection 2.5(a)
                         shall have received a distribution of Rights previously
                         owned by such Person or any of its Affiliates and
                         Associates.

     2.5  CONSOLIDATION, MERGER OR SALE OR TRANSFER OF ASSETS OR EARNING POWER
          --------------------------------------------------------------------

          (a)  In the event that, following the Stock Acquisition Date (or a
               date that would have been the Stock Acquisition Date but for
               Subsections 5.1(d) and (e)), directly or indirectly (a "SECTION
               2.5 EVENT"):

               (i)       the Corporation shall consolidate with, or merge with
                         or into, any other Person (other than a Subsidiary of
                         the Corporation in a transaction which complies with
                         Subsection 2.4(a)) and the Corporation shall not be the
                         continuing or surviving corporation of such
                         consolidation or merger;

               (ii)      any Person (other than a Subsidiary of the Corporation
                         in a transaction which complies with Subsection 2.4(a))
                         shall consolidate, merge with or into the Corporation
                         and the Corporation shall be the continuing or
                         surviving corporation of such consolidation or merger
                         and, in connection with such consolidation or merger,
                         all or part of the Common Shares shall be changed into
                         or exchanged for shares or other securities of any
                         other Person or cash or any other property; or

               (iii)     the Corporation shall sell or otherwise transfer (or
                         one or more of its Subsidiaries shall sell or otherwise
                         transfer), in one or more transactions, assets or
                         earning power aggregating more than 50% of the assets
                         or earning power of the Corporation and its
                         Subsidiaries (taken as a whole) to any other Person
                         (other than the Corporation or any of its Subsidiaries
                         in one or more transactions each of which complies with
                         Subsection 2.4(a)),

               then and in each such case proper provision shall be made so
               that;

               (iv)      each holder of a Right (except as provided in
                         Subsection 3.1(b)) shall thereafter have the right to
                         receive, upon the exercise thereof at the then current
                         Exercise Price in accordance with the terms of this
                         Agreement, such number of validly issued, fully paid,
                         nonassessable and freely tradable Common Shares of the
                         Principal Party (as hereinafter defined), not subject
                         to any liens, encumbrances, rights of call or first
                         refusal, or other adverse claims as shall be equal to
                         the result obtained by;

                    (A)  multiplying the then current Exercise Price by the
                         number of Common Shares for which a Right is
                         exercisable then immediately prior to the first
                         occurrence of a Section 2.5 Event (or, if a Flip-in
                         Event has occurred prior to the first occurrence of a
                         Section 2.5 Event, multiplying the number of such
                         shares for which a Right was exercisable immediately
                         prior to the first occurrence of a Flip-in Event by the
                         Exercise Price in effect immediately prior to such
                         first occurrence), and dividing that product (which,
                         following the first occurrence of a Section 2.5 Event,
                         shall be referred to as the "Exercise Price" for each
                         Right and for all purposes of this Agreement) by;

                    (B)  50% of the current Market Price per share of the Common
                         Shares of such Principal Party (determined in the
                         manner described in Subsection 1.1(ac)) on the date of
                         consummation of such consolidation, merger, sale or
                         transfer;

               (v)       the Principal Party shall thereafter be liable for, and
                         shall assume, by virtue of such Section 2.5 Event, all
                         the obligations and duties of the Corporation pursuant
                         to this Agreement;

               (vi)      the term "Corporation" shall thereafter be deemed to
                         refer to such Principal Party, it being specifically
                         intended that the provisions of Section 3.1 shall
                         thereafter apply to such Principal Party; and

               (vii)     such Principal Party shall take such steps in
                         connection with such consummation as may be necessary
                         to assure that the provisions hereof shall thereafter
                         be applicable, as nearly as reasonably may be, in
                         relation to its Common Shares thereafter deliverable
                         upon the exercise of the Rights.

          (b)  "Principal Party" shall mean;

               (i)       in the case of any transaction described in Subsection
                         2.5(a)(i) or (ii), the Person that is the issuer of any
                         securities into which Common Shares of the Corporation
                         are converted in such merger or consolidation and if no
                         securities are so issued the Person that is the other
                         party to the merger or consolidation; and

               (ii)      in the case of any transaction described in Subsection
                         2.5(a)(iii), the Person that is the party receiving the
                         greatest portion of the assets or earning power
                         transferred pursuant to such transaction or
                         transactions;

               provided however that in any such case,

               (iii)     if the Common Shares of such Person are not at such
                         time and have not been continuously over the preceding
                         12-month period registered under Section 12 of the 1934
                         Exchange Act, and such Person is a direct or indirect
                         Subsidiary of another corporation the Common Shares of
                         which are and have been so registered, "Principal
                         Party" shall refer to such other corporation; and

               (iv)      in case such Person is a Subsidiary, directly or
                         indirectly, of more than one corporation, the Common
                         Shares of two or more of which are and have been so
                         registered, "Principal Party" shall refer to whichever
                         of such corporations is the issuer of the Common Shares
                         having the greatest market value.

          (c)  The Corporation shall not consummate any Section 2.5 Event unless
               the Principal Party shall have a sufficient number of authorized
               Common Shares which are neither outstanding nor reserved for
               issuance to permit the exercise in full of the Rights in
               accordance with this Section 2.5 and unless prior thereto the
               Corporation and such Principal Party shall have executed and
               delivered to the Rights Agent a supplemental agreement providing
               for the terms set forth in Subsections 2.5(a) and (b) and further
               providing that, as soon as practicable after the date of any
               consolidation, merger or sale of assets mentioned in Subsection
               2.5(a), the Principal Party;

               (i)  shall prepare and file a registration statement under the
                    1933 Securities Act with respect to the Rights and the
                    securities purchasable upon exercise of the Rights on an
                    appropriate form, will use its best efforts to cause such
                    registration statement to become effective as soon as
                    practicable after such filing and will use its best efforts
                    to cause such registration statement to remain effective
                    (with a prospectus at all times meeting the requirements of
                    the 1933 Securities Act) until the Expiration Time; and

               (ii) will deliver to holders of the Rights historical financial
                    statements for the Principal Party and each of its
                    Affiliates which comply in all respects with the
                    requirements for registration on Form 10 under the 1934
                    Exchange Act.

               The provisions of this Section 2.5 shall similarly apply to
               successive Section 2.5 Events.  In the event that a Section 2.5
               Event shall occur at any time after the occurrence of a Flip-in
               Event, the Rights which have not theretofore been exercised shall
               thereafter become exercisable in the manner described in
               Subsection 2.5(a).

               In no event shall the Rights Agent have any liability in respect
               of any such Principal Party transactions, including, without
               limitation, the propriety thereof.  The Rights Agent may rely and
               be fully protected in relying upon a certification of the
               Corporation stating that the provisions of this Section 2.5 have
               been fulfilled.  Notwithstanding anything in this Agreement to
               the contrary, the prior written consent of the Rights Agent must
               be obtained in connection with any supplemental agreement which
               alters the rights or duties of the Rights Agent.

     2.6  DATE ON WHICH EXERCISE IS EFFECTIVE
          -----------------------------------

     Each Person in whose name any certificate for Common Shares or other
     securities, if applicable, is issued upon the exercise of Rights shall for
     all purposes be deemed to have become the holder of record of the Common
     Shares or other securities, if applicable, represented thereon and such
     certificate shall be dated the date upon which the Rights Certificate
     evidencing such Rights was duly surrendered in accordance with Subsection
     2.2(d) (together with a duly completed Election to Exercise) and payment of
     the Exercise Price for such Rights (and any applicable transfer taxes and
     other governmental charges payable by the exercising holder hereunder) was
     made; provided however that if the date of such surrender and payment is a
     date upon which the Common Share transfer books of the Corporation are
     closed, such Person shall be deemed to have become the record holder of
     such shares on and such certificate shall be dated, the next succeeding
     Business Day on which the Common Share transfer books of the Corporation
     are open.

     2.7  EXECUTION, AUTHENTICATION, DELIVERY AND DATING OF RIGHTS CERTIFICATES
          ---------------------------------------------------------------------

          (a)  The Rights Certificates shall be executed on behalf of the
               Corporation by its Chairman of the Board, President or any Vice-
               President and by its Corporate Secretary or any Assistant
               Secretary.  The signature of any of these officers on the Rights
               Certificates may be manual or facsimile.  Rights Certificates
               bearing the manual or facsimile signatures of individuals who
               were at any time the proper officers of the Corporation shall
               bind the Corporation, notwithstanding that such individuals or
               any of them have ceased to hold such offices either before or
               after the countersignature and delivery of such Rights
               Certificates.

          (b)  Promptly after the Corporation learns of the Separation Time, the
               Corporation will notify the Rights Agent of such Separation Time
               and will deliver Rights Certificates executed by the Corporation
               to the Rights Agent for countersignature and the Rights Agent
               shall manually countersign (in a manner satisfactory to the
               Corporation) and send such Rights Certificates to the holders of
               the Rights pursuant to Subsection 2.2(c) hereof.  No Rights
               Certificate shall be valid for any purpose until countersigned by
               the Rights Agent as aforesaid.

          (c)  Each Rights Certificate shall be dated the date of
               countersignature thereof.

     2.8  REGISTRATION, TRANSFER AND EXCHANGE
          -----------------------------------

          (a)  The Corporation shall cause to be kept a register (the "RIGHTS
               REGISTER") in which, subject to such reasonable regulations as it
               may prescribe, the Corporation shall provide for the registration
               and transfer of Rights.  The Rights Agent is hereby appointed
               registrar for the Rights (the "RIGHTS REGISTRAR") for the purpose
               of maintaining the Rights Register for the Corporation and
               registering Rights and transfers of Rights as herein provided and
               the Rights Agent hereby accepts such appointment.  In the event
               that the Rights Agent shall cease to be the Rights Registrar, the
               Rights Agent shall have the right to examine the Rights Register
               at all reasonable times.  After the Separation Time and prior to
               the Expiration Time, upon surrender for registration of transfer
               or exchange of any Rights Certificate, and subject to the
               provisions of Subsection 2.8(c), the Corporation shall execute,
               and the Rights Agent shall manually countersign and deliver, in
               the name of the holder or the designated transferee or
               transferees, as required pursuant to the holder's instructions,
               one or more new Rights Certificates evidencing the same aggregate
               number of Rights as did the Rights Certificates so surrendered.

          (b)  All Rights issued upon any registration of transfer or exchange
               of Rights Certificates shall be the valid obligations of the
               Corporation, and such Rights shall be entitled to the same
               benefits under this Agreement as the Rights surrendered upon such
               registration of transfer or exchange.

          (c)  Every Rights Certificate surrendered for registration of transfer
               or exchange shall be duly endorsed or be accompanied by a written
               instrument of transfer in form satisfactory to the Corporation or
               the Rights Agent, as the case may be, duly executed by the holder
               thereof or such holder's attorney duly authorized in writing.  As
               a condition to the issuance of any new Rights Certificate under
               this Section 2.8, the Corporation may require the payment of a
               sum sufficient to cover any tax or other governmental charge that
               may be imposed in relation thereto and any other expenses
               (including the reasonable fees and expenses of the Rights Agent)
               connected therewith.

          (d)  Neither the Rights Agent nor the Corporation shall be obligated
               to take any action whatsoever with respect to the transfer of any
               surrendered Rights Certificate until the holder shall have
               completed and signed the certificate contained in the form of
               assignment on the reverse side of such Rights Certificate and
               shall have provided such additional evidence of the identity of
               the Beneficial Owner, Affiliates or Associates of such Beneficial
               Owner or holder, or of any other Person with which such holder or
               any of such holder's Affiliates or Associates has any agreement,
               arrangement or understanding (whether or not in writing) for the
               purpose of acquiring, holding, voting or disposing of securities
               of the Corporation as the Corporation shall reasonably request.

     2.9  MUTILATED, DESTROYED, LOST AND STOLEN RIGHTS CERTIFICATES
          ---------------------------------------------------------

          (a)  If any mutilated Rights Certificate is surrendered to the Rights
               Agent prior to the Expiration Time, the Corporation shall execute
               and the Rights Agent shall countersign and deliver in exchange
               therefor a new Rights Certificate evidencing the same number of
               Rights as did the Rights Certificate so surrendered.

          (b)  If there shall be delivered to the Corporation and the Rights
               Agent prior to the Expiration Time:

               (i)  evidence to their reasonable satisfaction of the
                    destruction, loss or theft of any Rights Certificate; and

               (ii) such security or indemnity as may be reasonably required by
                    them to save each of them and any of their agents harmless;

               then in the absence of notice to the Corporation or the Rights
               Agent that such Rights Certificate has been acquired by a bona
               fide purchaser, the Corporation shall execute and upon the
               Corporation's request, the Rights Agent shall countersign and
               deliver, in lieu of any such destroyed, lost or stolen Rights
               Certificate, a new Rights Certificate evidencing the same number
               of Rights as did the Rights Certificate so destroyed, lost or
               stolen.

          (c)  As a condition to the issuance of any new Rights Certificate
               under this Section 2.9, the Corporation may require the payment
               of a sum sufficient to cover any tax or other governmental charge
               that may be imposed in relation thereto and any other expenses
               (including the reasonable fees and expenses of the Rights Agent)
               connected therewith. 

          (d)  Every new Rights Certificate issued pursuant to this Section 2.9
               in lieu of any destroyed, lost or stolen Rights Certificate shall
               evidence the contractual obligation of the Corporation, whether
               or not the destroyed, lost or stolen Rights Certificate shall be
               at any time enforceable by anyone and shall be entitled to all
               the benefits of this Agreement equally and proportionately with
               any and all other Rights duly issued hereunder.

     2.10 PERSONS DEEMED OWNERS OF RIGHTS
          -------------------------------

     The Corporation, the Rights Agent and any agent of the Corporation or the
     Rights Agent may deem and treat the Person in whose name a Rights
     Certificate (or, prior to the Separation Time, the associated Common Share
     certificate) is registered as the absolute owner thereof and of the Rights
     evidenced thereby for all purposes whatsoever.  As used in this Agreement,
     unless the context otherwise requires, the term "holder" of any Right shall
     mean the registered holder of such Right (or, prior to the Separation Time,
     of the associated Common Share).

     2.11 DELIVERY AND CANCELLATION OF CERTIFICATES
          -----------------------------------------

     All Rights Certificates surrendered upon exercise or for redemption,
     registration of transfer or exchange shall, if surrendered to any Person
     other than the Rights Agent, be delivered to the Rights Agent and, in any
     case, shall be promptly cancelled by the Rights Agent.  The Corporation may
     at any time deliver to the Rights Agent for cancellation any Rights
     Certificates previously countersigned and delivered hereunder which the
     Corporation may have acquired in any manner whatsoever and all Rights
     Certificates so delivered shall be promptly cancelled by the Rights Agent. 
     No Rights Certificate shall be countersigned in lieu of or in exchange for
     any Rights Certificates cancelled as provided in this Section 2.11, except
     as expressly permitted by this Agreement.  The Rights Agent shall, subject
     to applicable laws, destroy all cancelled Rights Certificates and shall
     deliver a certificate of destruction to the Corporation.

     2.12 AGREEMENT OF RIGHTS HOLDERS
          ---------------------------

     Every holder of Rights, by accepting the same, consents and agrees with the
     Corporation and the Rights Agent and with every other holder of Rights:

          (a)  to be bound by and subject to the provisions of this Agreement,
               as amended from time to time in accordance with the terms hereof,
               in respect of all Rights held;

          (b)  that prior to the Separation Time, each Right shall be
               transferable only together with and shall be transferred by a
               transfer of, the associated Common Share certificate representing
               such Right;

          (c)  that after the Separation Time, the Rights Certificates shall be
               transferable only on the Rights Register as provided herein; 

          (d)  that prior to due presentment of a Rights Certificate (or, prior
               to the Separation Time, the associated Common Share certificate)
               for registration of transfer, the Corporation, the Rights Agent
               and any agent of the Corporation or the Rights Agent may deem and
               treat the Person in whose name the Rights Certificate (or, prior
               to the Separation Time, the associated Common Share certificate)
               is registered as the absolute owner thereof and of the Rights
               evidenced thereby (notwithstanding any notations of ownership or
               writing on such Rights Certificate or the associated Common Share
               certificate made by anyone other than the Corporation or the
               Rights Agent) for all purposes whatsoever, and neither the
               Corporation nor the Rights Agent shall be affected by any notice
               to the contrary;

          (e)  that such holder of Rights has waived his right to receive any
               fractional Rights or any fractional shares or other securities
               upon exercise of a Right (except as provided herein); and

          (f)  that, subject to the provisions of Section 5.5, without the
               approval of any holder of Rights or Voting Shares and upon the
               sole authority of the Board of Directors, acting in good faith,
               this Agreement may be supplemented or amended from time to time
               to cure any ambiguity or to correct or supplement any provision
               contained herein which may be inconsistent with the intent of
               this Agreement or is otherwise defective, as provided herein.

     2.13 RIGHTS CERTIFICATE HOLDER NOT DEEMED A SHAREHOLDER
          --------------------------------------------------

     No holder, as such, of any Rights or Rights Certificate shall be entitled
     to vote, receive dividends or be deemed for any purpose whatsoever the
     holder of any Common Share or any other share or security of the
     Corporation which may at any time be issuable on the exercise of the Rights
     represented thereby, nor shall anything contained herein or in any Rights
     Certificate be construed or be deemed or confer upon the holder of any
     Right or Rights Certificate, as such, any right, title, benefit or
     privilege of a holder of Common Shares or any other shares or securities of
     the Corporation or any right to vote at any meeting of shareholders of the
     Corporation whether for the election of directors or otherwise or upon any
     matter submitted to holders of Common Shares or any other shares of the
     Corporation at any meeting thereof, or to give or withhold consent to any
     action of the Corporation, or to receive notice of any meeting or other
     action affecting any holder of Common Shares or any other shares of the
     Corporation except as expressly provided herein, or to receive dividends,
     distributions or subscription rights, or otherwise, until the Right or
     Rights evidenced by Rights Certificates shall have been duly exercised in
     accordance with the terms and provisions hereof.

                        ARTICLE 3 - ADJUSTMENTS TO THE RIGHTS

     3.1  FLIP-IN EVENT
          -------------

          (a)  Subject to Subsection 3.1(b) and Section 5.1, in the event that
               prior to the Expiration Time a Flip-in Event shall occur, each
               Right shall constitute, effective at the close of business on the
               eighth Trading Day after the Stock Acquisition Date, the right to
               purchase from the Corporation, upon exercise thereof in
               accordance with the terms hereof, that number of Common Shares
               having an aggregate Market Price on the date of consummation or
               occurrence of such Flip-in Event equal to twice the Exercise
               Price for an amount in cash equal to the Exercise Price (such
               right to be appropriately adjusted in a manner analogous to the
               applicable adjustment provided for in Section 2.3 in the event
               that after such consummation or occurrence, an event of a type
               analogous to any of the events described in Section 2.3 shall
               have occurred).

          (b)  Notwithstanding anything in this Agreement to the contrary, upon
               the occurrence of any Flip-in Event, any Rights that are or were
               Beneficially Owned on or after the earlier of the Separation Time
               or the Stock Acquisition Date by: 

               (i)  an Acquiring Person (or any Affiliate or Associate of an
                    Acquiring Person or any Person acting jointly or in concert
                    with an Acquiring Person or any Affiliate or Associate of an
                    Acquiring Person); or

               (ii) a transferee of Rights, directly or indirectly, from an
                    Acquiring Person (or any Affiliate or Associate of an
                    Acquiring Person or any Person acting jointly or in concert
                    with an Acquiring Person or any Affiliate or Associate of an
                    Acquiring Person), where such transferee becomes a
                    transferee concurrently with or subsequent to the Acquiring
                    Person becoming such in a transfer that the Board of
                    Directors has determined is part of a plan, arrangement or
                    scheme of an Acquiring Person (or any Affiliate or Associate
                    of an Acquiring Person or any Person acting jointly or in
                    concert with an Acquiring Person or any Affiliate or
                    Associate of an Acquiring Person), that has the purpose or
                    effect of avoiding 3.1(b)(i);

               shall become null and void without any further action and any
               holder of such Rights (including transferees) shall thereafter
               have no right to exercise such Rights under any provision of this
               Agreement and further shall thereafter not have any other rights
               whatsoever with respect to such Rights, whether under any
               provision of this Agreement or otherwise.

          (c)  From and after the Separation Time, the Corporation shall do all
               such acts and things as shall be necessary and within its power
               to ensure compliance with the provisions of this Section 3.1,
               including without limitation, all such acts and things as may be
               required to satisfy the requirements of the OBCA,  the Securities
               Act  and the securities laws or comparable legislation of each of
               the provinces of Canada and of the United States and each of the
               states thereof in respect of the issue of Common Shares upon the
               exercise of Rights in accordance with this Agreement.

          (d)  Any Rights Certificate that represents Rights Beneficially Owned
               by a Person described in either 3.1(b)(i) or (ii) or transferred
               to any nominee of any such Person and any Rights Certificate
               issued upon transfer, exchange, replacement or adjustment of any
               other Rights Certificate referred to in this sentence, shall
               contain the following legend:

               The Rights represented by this Rights Certificate were issued to
               a Person who was an Acquiring Person or an Affiliate or an
               Associate of an Acquiring Person (as such terms are defined in
               the Shareholder Rights Plan Agreement) or a Person who was acting
               jointly or in concert with an Acquiring Person or an Affiliate or
               Associate of an Acquiring Person.  This Rights Certificate and
               the Rights represented hereby are void or shall become void in
               the circumstances specified in Subsection 3.1 (b) of the
               Shareholder Rights Plan Agreement.

     Provided however that the Rights Agent shall not be under any
     responsibility to ascertain the existence of facts that would require
     the imposition of such legend but shall impose such legend only if
     instructed to do so by the Corporation in writing or if a holder fails
     to certify upon transfer or exchange in the space provided on the Rights
     Certificate that such holder is not a Person described on such legend.

     3.2  EXCHANGE OPTION
          ---------------

          (a)  The Board of Directors of the Corporation may, at its option, and
               without seeking the approval of the holders of Common Shares or
               Rights (provided that there are then Independent Directors in
               office and a majority of the Independent Directors concur), at
               any time and from time to time on or after a Flip-in Event has
               occurred, exchange all or part of the then outstanding and
               exercisable Rights (which shall not include Rights that have
               become void pursuant to the provisions of Section 3.1) for Common
               Shares at an exchange ratio of one Common Share per Right,
               appropriately adjusted to reflect any stock split, stock dividend
               or similar transaction occurring after the date of this Agreement
               (such exchange ratio being hereinafter referred to as the
               "EXCHANGE RATIO").

          (b)  Immediately upon the action of the Board of Directors of the
               Corporation ordering the exchange of any Rights pursuant to
               Subsection 3.2(a) and without any further action and without any
               notice, the right to exercise such Rights shall terminate and the
               only right thereafter of a holder of such Rights shall be to
               receive that number of Common Shares equal to the number of such
               Rights held by such holder multiplied by the Exchange Ratio.  The
               Corporation shall promptly give public notice along with
               simultaneous written notice to the Rights Agent, of any such
               exchange, provided however that the failure to give or any defect
               in such notice shall not affect the validity of such exchange. 
               The Corporation shall promptly mail a notice of any such exchange
               to all of the holders of such Rights at their last addresses as
               they appear upon the register books of the Rights Agent.  Any
               notice which is mailed in the manner herein provided shall be
               deemed given, whether or not the holder receives the notice. 
               Each such notice of exchange will state the method by which the
               exchange will be affected and in the event of any partial
               exchange the number of Rights which will be exchanged.  Any
               partial exchange shall be effected pro rata based on the number
               of Rights (other than Rights which have become void pursuant to
               the provisions of Subsection 3.1(b)) held by each holder of
               Rights.

          (c)  In an exchange pursuant to this Section 3.2, the Corporation, at
               its option, may substitute for Common Shares exchangeable for a
               Right (i) "common share equivalents", (ii) cash, (iii) debt or
               equity securities of the Corporation, (iv) other assets, or (v)
               any combination of the foregoing, having an aggregate value which
               a majority of the Independent Directors and the Board of
               Directors of the Corporation shall have determined in good faith
               to be equal to the current Market Price of one Common Share
               (determined pursuant to Subsection 1.1(ac)) on the Trading Date
               immediately preceding the date of exchange pursuant to this
               Section 3.2.

          (d)  If the Board of Directors authorizes the exchange of debt or
               equity securities or other assets (or a combination thereof) for
               Rights pursuant to Subsections 3.2(a) to (c), then, without any
               further action or notice, the right to exercise the Rights will
               terminate and the only right thereafter of a holder of Rights
               shall be to receive such debt or equity securities or other
               assets (or a combination thereof) in accordance with the exchange
               formula authorized by the Board of Directors.  Within 10 Business
               Days after the Board of Directors has authorized the exchange of
               debt or equity securities or other assets (or a combination
               thereof) for Rights pursuant to Subsections 3.2(a) to (c), the
               Corporation shall give notice of such exchange to the holders of
               such Rights.  Each such notice of exchange will state the method
               by which the exchange of debt or equity securities or other
               assets (or a combination thereof) for Rights will be affected
               and shall state that Rights Certificates must be surrendered to
               the Rights Agent as a condition precedent to the receipt of
               such debt or equity securities or other assets.

          (e)  The Corporation shall not be required to issue fractions of
               securities or to distribute certificates evidencing fractional
               securities.  In lieu of issuing such fractional securities, there
               shall be paid to the registered holders of Rights to whom such
               fractional securities would otherwise be issuable, an amount in
               cash equal to the same fraction of the Market Price of a whole
               security.

     3.3  FIDUCIARY DUTIES OF THE BOARD OF DIRECTORS OF THE CORPORATION
          -------------------------------------------------------------

     It is understood that nothing contained in this Article 3 shall be
     considered to affect the obligations of the Board of Directors to exercise
     their fiduciary duties.  Without limiting the generality of the foregoing,
     nothing contained herein shall be construed to suggest or imply that the
     Board of Directors shall not be entitled to recommend that holders of the
     Voting Shares of the Corporation reject or accept any Take-over Bid or take
     any other action (including, without limitation, the commencement,
     prosecution, defence or settlement of any litigation) with respect to any
     Take-over Bid that the Board of Directors believes is necessary or
     appropriate in the exercise of the fiduciary duties of its members.


                             ARTICLE 4 - THE RIGHTS AGENT

     4.1  GENERAL
          -------

          (a)  The Corporation hereby appoints the Rights Agent to act as agent
               for the Corporation and the holders of the Rights in accordance
               with the terms and conditions hereof and the Rights Agent hereby
               accepts such appointment.  The Corporation may from time to time
               appoint such Co-Rights Agents ("CO-RIGHTS AGENTS") as it may deem
               necessary or desirable, subject to the prior written consent of
               the Rights Agent.  In the event the Corporation appoints one or
               more Co-Rights Agents, the respective duties of the Rights
               Agent and Co-Rights Agents shall be as the Corporation may
               determine with the written approval of the Rights Agent and the
               Co-Rights Agent.  The Corporation agrees to pay all reasonable
               fees and expenses of the Rights Agent in respect of the
               performance of its duties under this Agreement.  The Corporation
               also agrees to indemnify the Rights Agent, its officers,
               directors, employees and agents for and to hold it harmless
               against, any loss, liability or expense, incurred without
               negligence, bad faith or wilful misconduct on the part of the
               Rights Agent, for anything done or omitted by the Rights Agent
               in connection with the acceptance and administration of this
               Agreement, including legal costs and expenses, which right to
               indemnification shall survive the termination of this Agreement
               or the resignation or removal of the Rights Agent.

          (b)  The Rights Agent shall be protected and shall incur no liability
               for or in respect of any action taken, suffered or omitted by it
               in connection with its administration of this Agreement in
               reliance upon any certificate for Common Shares, Rights
               Certificate, certificate for other securities of the Corporation,
               instrument of assignment or transfer, power of attorney,
               endorsement, affidavit, letter, notice, direction, consent,
               certificate, statement, or other paper or document believed by it
               to be genuine and to be signed, executed and, where necessary,
               verified or acknowledged, by the proper Person or Persons.

     The Corporation shall inform the Rights Agent in a reasonably timely
     manner of events which may materially affect the administration of this
     Agreement by the Rights Agent and, at any time upon such request shall
     provide to the Rights Agent an incumbency certificate certifying the
     current officers of the Corporation.

     4.2  MERGER, AMALGAMATION OR CONSOLIDATION OR CHANGE OF NAME OF RIGHTS
          -----------------------------------------------------------------
          AGENT
          -----

          (a)  Any corporation into which the Rights Agent may be merged or
               amalgamated or with which it may be consolidated, or any
               corporation resulting from any merger, amalgamation, statutory
               arrangement or consolidation to which the Rights Agent is a
               party, or any corporation succeeding to the shareholder or
               stockholder services business of the Rights Agent, shall be the
               successor to the Rights Agent under this Agreement without the
               execution or filing of any paper or any further act on the part
               of any of the parties hereto, provided that such corporation will
               be eligible for appointment as a successor Rights Agent under the
               provisions of Section 4.4.  In case at the time such successor
               Rights Agent succeeds to the agency created by this Agreement any
               of the Rights Certificates have been countersigned but not
               delivered, any successor Rights Agent may adopt the
               countersignature of the predecessor Rights Agent and may deliver
               such Rights Certificates so countersigned; and in case at that
               time any of the Rights have not been countersigned, any successor
               Rights Agent may countersign such Rights Certificates in the name
               of the predecessor Rights Agent or in the name of the successor
               Rights Agent; and in all such cases such Rights Certificates
               shall have the full force provided in the Rights Certificates and
               in this Agreement.

          (b)  In case at any time the name of the Rights Agent is changed and
               at such time any of the Rights Certificates shall have been
               countersigned but not delivered, the Rights Agent may adopt the
               countersignature under its prior name and shall deliver Rights
               Certificates so countersigned; and in case at that time any of
               the Rights Certificates shall not have been countersigned, the
               Rights Agent may countersign such Rights Certificates either in
               the prior name or in its changed name; and in all such cases such
               Rights Certificates shall have the full force provided in the
               Rights Certificates and in this Agreement.

     4.3  DUTIES OF RIGHTS AGENT
          ----------------------

     The Rights Agent undertakes the duties and obligations imposed by this
     Agreement upon the following terms and conditions, all of which the
     Corporation and the holders of certificates for Common Shares and the
     holders of Rights Certificates, by their acceptance thereof, shall be
     bound:

          (a)  the Rights Agent may retain and consult with legal counsel
               (who may be legal counsel for the Corporation) and the opinion
               of such counsel shall be full and complete authorization and
               protection to the Rights Agent as to any action taken or
               omitted by it in good faith and in accordance with such
               opinion and the Rights Agent may also consult with such
               experts as the Rights Agent shall consider necessary or
               appropriate to properly carry out the duties and obligations
               imposed under this Agreement at the expense of the Corporation
               and the Rights Agent shall be entitled to act and rely on
               the advice of any such expert;

          (b)  whenever in the performance of its duties under this Agreement,
               the Rights Agent deems it necessary or desirable that any fact or
               matter be proved or established by the Corporation prior to
               taking or suffering any action hereunder, such fact or matter
               (unless other evidence in respect thereof shall be herein
               specifically prescribed) may be deemed to be conclusively proved
               and established by a certificate signed by a Person believed by
               the Rights Agent to be the Chairman of the Board, President or
               Chief Financial Officer of the Corporation and delivered to the
               Rights Agent; and such certificate shall be full authorization to
               the Rights Agent for any action taken or suffered in good faith
               by it under the provisions of this Agreement in reliance upon
               such certificate;

          (c)  the Rights Agent shall be liable hereunder for its own
               negligence, bad faith or wilful misconduct;

          (d)  the Rights Agent shall not be liable for or by reason of any of
               the statements of fact or recitals contained in this Agreement or
               in the certificates for Common Shares or the Rights Certificates
               (except its countersignature thereof) or shall be required to
               verify the same, but all such statements and recitals are and
               shall be deemed to have been made by the Corporation only;

          (e)  the Rights Agent shall not be under any responsibility in respect
               of the validity of this Agreement or the execution and delivery
               hereof (except the due authorization, execution and delivery
               hereof by the Rights Agent) or in respect of the validity or
               execution of any certificate for a Common Share or Rights
               Certificate (except its countersignature thereof); nor shall it
               be responsible for any breach by the Corporation of any covenant
               or condition contained in this Agreement or in any Rights
               Certificate; nor shall it be responsible for any change in the
               exerciseability of the Rights (including the Rights becoming void
               pursuant to Subsection 3.1(b) hereof or being exchanged pursuant
               to Section 3.2) or any adjustment required under the provisions
               of Section 2.3 hereof or responsible for the manner, method or
               amount of any such adjustment or ascertaining the existence of
               facts that would require any such adjustment (except with
               respect to the exercise of Rights after receipt of the
               certificate contemplated by Section 2.3 describing any such
               adjustment); nor shall it by any act hereunder be deemed to make
               any representation or warranty as to the authorization of any
               Common Shares to be issued pursuant to this Agreement or any
               Rights or as to whether any Common Shares shall, when issued, be
               duly and validly authorized, executed, issued and delivered and
               fully paid and nonassessable;

          (f)  the Corporation agrees that it shall perform, execute,
               acknowledge and deliver or cause to be performed, executed,
               acknowledged and delivered all such further and other acts,
               instruments and assurances as may reasonably be required by the
               Rights Agent for the carrying out or performing by the Rights
               Agent of the provisions of this Agreement; 

          (g)  the Rights Agent is hereby authorized and directed to accept
               instructions in writing with respect to the performance of its
               duties hereunder from any individual believed by the Rights Agent
               to be the Chairman of the Board, President or Chief Financial
               Officer of the Corporation, and to apply to such individuals for
               advice or instructions in connection with its duties, and it
               shall not be liable for any action taken or suffered by it in
               good faith in accordance with instructions of any such
               individual;

          (h)  the Rights Agent and any shareholder or stockholder, director,
               officer or employee of the Rights Agent may buy, sell or deal in
               Common Shares, Rights or other securities of the Corporation or
               may become pecuniarily interested in any transaction in which the
               Corporation may be interested, or contract with or lend money to
               the Corporation or otherwise act as fully and freely as though it
               were not the Rights Agent under this Agreement.  Nothing herein
               shall preclude the Rights Agent from acting in any other capacity
               for the Corporation or for any other legal entity; and

          (i)  the Rights Agent may execute and exercise any of the rights or
               powers hereby vested in it or perform any duty hereunder either
               itself or by or through its attorneys or agents, and the Rights
               Agent shall not be answerable or accountable for any act,
               default, neglect or misconduct of any such attorneys or agents or
               for any loss to the Corporation resulting from any such act,
               default, neglect or misconduct, provided reasonable care was
               exercised in the selection and continued employment thereof.

     4.4  CHANGE OF RIGHTS AGENT
          ----------------------

     The Rights Agent may resign and be discharged from its duties under this
     Agreement upon 60 days' notice (or such lesser notice as is acceptable to
     the Corporation) in writing mailed to the Corporation and to each transfer
     agent of Common Shares by registered or certified mail.  The Corporation
     may remove the Rights Agent upon 60 days' notice in writing, mailed to the
     Rights Agent and to each transfer agent of the Common Shares by registered
     or certified mail.  If the Rights Agent should resign or be removed or
     otherwise become incapable of acting, the Corporation shall appoint a
     successor to the Rights Agent.  If the Corporation fails to make such
     appointment within a period of 60 days after such removal or after it has
     been notified in writing of such resignation or incapacity by the resigning
     or incapacitated Rights Agent, then by prior written notice to the
     Corporation, the resigning Rights Agent or the holder of any Rights (which
     holder shall, with such notice, submit such holder's Rights Certificate, if
     any, for inspection by the Corporation), may apply to any court of
     competent jurisdiction for the appointment of a new Rights Agent at the
     Corporation's expense.  Any successor Rights Agent, whether appointed by
     the Corporation or by such a court, shall be a corporation incorporated
     under the laws of Canada.  After appointment, the successor Rights Agent
     shall be vested with the same powers, rights, duties and responsibilities
     as if it had been originally named as Rights Agent without further act
     or deed; but the predecessor Rights Agent upon receipt of all outstanding
     fees and expenses shall deliver and transfer to the successor Rights
     Agent any property at the time held by it hereunder, and execute and
     deliver any further assurance, conveyance, act or deed necessary for the
     purpose.  Not later than the effective date of any such appointment, the
     Corporation shall file notice thereof in writing with the predecessor
     Rights Agent and each transfer agent of the Common Shares and mail a notice
     thereof in writing to the holders of the Rights in accordance with Section
     5.10.  Failure to give any notice provided for in this Section 4.4,
     however, or any defect therein, shall not affect the legality or validity
     of the resignation or removal of the Rights Agent or the appointment of any
     successor Rights Agent, as the case may be.


                              ARTICLE 5 - MISCELLANEOUS

     5.1  REDEMPTION AND WAIVER
          ---------------------

          (a)  The Board of Directors may, at its option, at any time prior to
               the earlier of (i) the Close of Business on the eighth Trading
               Day following the Stock Acquisition Date (or if the Stock
               Acquisition Date shall have occurred prior to the Record Time,
               the Close of Business on the eighth Trading Day following the
               Record Time), or (ii) the final Expiration Time, elect to redeem
               all but not less than all of the then outstanding Rights at a
               redemption price of $0.0001 per Right appropriately adjusted in a
               manner analogous to the applicable adjustment provided for in
               Section 2.3 in the event that an event of the type analogous to
               any of the events described in Section 2.3 shall have occurred
               (such redemption price being herein referred to as the
               "REDEMPTION PRICE"), and the Corporation may, at its option, pay
               the Redemption Price with either its Common Shares (valued at
               their Market Price on the date of the redemption) or cash or
               other assets; provided, however, that if the Board of Directors
               of the Corporation authorizes redemption of the Rights in either
               of the circumstances set forth in clauses (A) or (B) below then
               there must be Independent Directors in office and such
               authorization shall require the concurrence of a majority of
               the Independent Directors; (A) such authorization occurs on or
               after the Stock Acquisition Date, or (B) such authorization
               occurs on or after the date of a change (resulting from a
               proxy or consent solicitation) in a majority of the Board of
               Directors in office at the commencement of such solicitation
               if any Person who is a participant in such solicitation has
               stated (or if upon the commencement of such solicitation a
               majority of the Board of Directors has determined in good faith)
               that such Person (or any of its Affiliates or Associates)
               intends to take, or may consider taking, any action which would
               result in such Person becoming an Acquiring Person or which
               would cause the occurrence of a Flip-in Event or a Section 2.5
               Event.  Notwithstanding anything contained in this Agreement
               to the contrary, the Rights shall not be exercisable after the
               first occurrence of a Flip-in Event until such time as the
               Corporation's right of redemption hereunder has expired.  The
               redemption of the Rights by the Board of Directors may be made
               effective at such time, on such basis and with such conditions
               as the Board of Directors in its sole discretion may establish.

          (b)  In deciding whether or not to exercise the Corporation's right of
               redemption hereunder, the Board of Directors shall act in good
               faith, in a manner they reasonably believe to be in the best
               interests of the Corporation and with such care, including
               reasonable inquiry, skill and diligence, as a person of ordinary
               prudence would use under similar circumstances, and they may
               consider the long-term and short-term effects of any action upon
               employees, customers and creditors of the Corporation and upon
               communities in which offices or other establishments of the
               Corporation are located, and all other pertinent factors.

          (c)  Immediately upon the action of the Board of Directors of the
               Corporation electing to or being deemed to have elected to redeem
               the Rights, and without any further action and without any
               notice, the right to exercise the Rights shall terminate and the
               only right thereafter of the holders of Rights shall be to
               receive the Redemption Price for each Right held.  Within 10 days
               after the action of the Board of Directors electing to or being
               deemed to have elected to redeem the Rights, the Corporation
               shall give written notice of such redemption to the holders of
               the then outstanding Rights in accordance with Section 5.10 and
               to the Rights Agent.  Each such notice of redemption shall state
               the method by which the payment of the Redemption Price shall
               be made.  Failure to give any notice provided for in this
               Subsection, however, or any defect therein, shall not affect the
               legality or validity of the redemption.  Neither the Corporation
               nor any of its Affiliates or Associates may redeem, acquire or
               purchase for value any Rights at any time in any manner other
               than that specifically set forth in this Section 5.1, and other
               than in connection with the repurchase of Common Shares prior
               to the Separation Time.

          (d)  The Board of Directors may waive the application of Section 3.1
               to any particular Flip-in Event, provided there must be
               Independent Directors in office and such waiver and authorization
               shall have been approved by a majority of Independent Directors
               prior to the eighth Trading Day after the Stock Acquisition
               Date.

          (e)  The Board of Directors may prior to the Close of Business on the
               eighth Trading Day following the Stock Acquisition Date
               determine, upon prior written notice delivered to the Rights
               Agent, to waive or to agree to waive the application of Section
               3.1 to that Flip-in Event, provided that the Acquiring Person has
               (i) reduced its Beneficial Ownership of Voting Shares, or (ii)
               has entered into a contractual arrangement with the Corporation,
               acceptable to the Board of Directors, to do so within 30 days of
               the date on which such contractual arrangement is entered into
               (the expiry of which period is herein referred to as the
               "DISPOSITION DATE"), such that at the time the waiver becomes
               effective pursuant to this Subsection 5.1(e) such Person is no
               longer an Acquiring Person.  In the event of such a waiver
               becoming effective, for the purposes of this Agreement, such
               Flip-in Event shall be deemed not to have occurred.  Without
               limiting the generality of the foregoing, if the Person remains
               an Acquiring Person at the Close of Business on the Disposition
               Date, the Disposition Date shall be deemed to be the date of
               occurrence of a further Stock Acquisition Date and Section 3.1
               shall apply thereto.

          (f)  Where a Take-over Bid or other event giving rise to a Separation
               Time, is withdrawn or otherwise terminated after the Separation
               Time has occurred and prior to the occurrence of a Flip-in Event,
               or in any other circumstances prior to the occurrence of a Flip-
               in Event, the Board of Directors may elect to redeem all the
               outstanding Rights at the Redemption Price.  Without restricting
               the rights of the Board of Directors to elect to redeem the
               Rights pursuant to Subsection 5.1(a) rather than pursuant to
               Subsection 5.1(f), upon the Rights being redeemed pursuant to
               this Subsection 5.1(f), all of the provisions of this Agreement
               shall continue to apply as if the Separation Time had not
               occurred and Rights Certificates representing the number of
               Rights held by each holder of record of Common Shares as of the
               Separation Time had not been mailed to each such holder and for
               all purposes of this Agreement the events giving rise to the
               Separation Time shall be deemed not to have occurred.

     5.2  NOTICE OF CERTAIN EVENTS
          ------------------------

     In case the Corporation shall propose at any time following the Separation
     Time:

          (a)  to pay any dividend payable in stock of any class to the holders
               of Common Shares or to make any other distribution to the holders
               of Common Shares (other than a regular periodic cash dividend),
               or

          (b)  to offer to the holders of Common Shares rights or warrants to
               subscribe for or to purchase any additional Common Shares or
               shares of stock of any class or any other securities, rights or
               options, or

          (c)  to effect any reclassification of Common Shares (other than a
               reclassification involving only the subdivision of outstanding
               Common Shares), or

          (d)  to effect any consolidation or merger into or with any other
               Person (other than a Subsidiary of the Corporation in a
               transaction which complies with Subsection 2.4(a)), or to effect
               any sale or other transfer (or to permit one or more of its
               Subsidiaries to effect any sale or other transfer), in one or
               more transactions, of more than 50% of the assets or earning
               power of the Corporation and its Subsidiaries (taken as a whole)
               to, any other Person (other than the Corporation and/or any of
               its Subsidiaries in one or more transactions each of which
               complies with Subsection 2.4(a)), or

          (e)  to effect the liquidation, dissolution or winding up of the
               Corporation,

          then, in each such case, the Corporation shall give to the Rights
          Agent and to each holder of a Right, in accordance with Section 5.10 a
          notice of such proposed action, which shall specify the Record Time
          for the purposes of such stock dividend, distribution of rights or
          Rights, or the date on which such reclassification, consolidation,
          merger, sale, transfer, liquidation, dissolution, or winding up is to
          take place and the date of participation therein by the holders of the
          Common Shares, if any such date is to be fixed, and such notice shall
          be so given in the case of any action covered by clause (a) or (b)
          above at least 20 days prior to the Record Time for determining
          holders of Common Shares for purposes of such action, and in the case
          of any such other action, at least 20 days prior to the date of the
          taking of such proposed action or the date of participation therein by
          the holders of Common Shares, whichever shall be the earlier.

          In case a Flip-In Event shall occur, then, in any such case, the
          Corporation shall as soon as practicable thereafter give to the Rights
          Agent and to each holder of a Right, to the extent feasible and in
          accordance with Section 5.10, a notice of the occurrence of such
          event, which shall specify the event and the consequences of the event
          to holders of Rights under Subsection 3.1(a) and all references in the
          preceding paragraph to Common Shares shall be deemed to thereafter
          refer to other securities.

     5.3  EXPIRATION
          ----------

     No Person shall have any rights whatsoever pursuant to this Agreement or in
     respect of any Right after the Expiration Time, except the Rights Agent as
     specified in Subsection 4.1(a) hereof.

     5.4  ISSUANCE OF NEW RIGHTS CERTIFICATES
          -----------------------------------

     Notwithstanding any of the provisions of this Agreement or the Rights to
     the contrary, the Corporation may, at its option, issue new Rights
     Certificates evidencing Rights in such form as may be approved by the Board
     of Directors to reflect any adjustment or change in the number or kind or
     class of securities purchasable upon exercise of Rights made in accordance
     with the provisions of this Agreement.

     5.5  SUPPLEMENTS AND AMENDMENTS
          --------------------------

          (a)  The Corporation may make amendments to this Agreement to correct
               any clerical or typographical error or which are required to
               maintain the validity of this Agreement as a result of any change
               in any applicable legislation or regulations thereunder.  The
               Corporation may, prior to the date of the shareholders' meeting
               referred to in Section 5.16, supplement or amend this Agreement
               without the approval of any holders of Rights or Voting Shares in
               order to make any changes which the Board of Directors acting in
               good faith may deem necessary or desirable.  Notwithstanding
               anything in this Section 5.5 to the contrary, no such supplement
               or amendment shall be made to the provisions of Article 4 except
               with the written concurrence of the Rights Agent to such
               supplement or amendment.

          (b)  Subject to Section 5.5(a), the Corporation may, with the prior
               consent of the holders of Voting Shares obtained as set forth
               below, at any time prior to the Separation Time, amend, vary or
               rescind any of the provisions of this Agreement and the Rights
               (whether or not such action would materially adversely affect the
               interests of the holders of Rights generally).  Such consent
               shall be deemed to have been given if the action requiring such
               approval is authorized by the affirmative vote of a majority of
               the votes cast by Independent Shareholders present or represented
               at and entitled to be voted at a meeting of the holders of Voting
               Shares duly called and held in compliance with applicable laws
               and the articles and by-laws of the Corporation.

          (c)  The Corporation may, with the prior consent of the holders of
               Rights, at any time on or after the Stock Acquisition Date,
               amend, vary or delete any of the provisions of this Agreement and
               the Rights (whether or not such action would materially adversely
               affect the interests of the holders of Rights generally),
               provided that no such amendment, variation or deletion shall be
               made to the provisions of Article 4 except with the written
               concurrence of the Rights Agent thereto.  Such consent shall be
               deemed to have been given if such amendment, variation or
               deletion is authorized by the affirmative votes of the holders of
               Rights present or represented at and entitled to be voted at a
               meeting of the holders and representing 50% plus one of the votes
               cast in respect thereof.

          (d)  Any approval of the holders of Rights shall be deemed to have
               been given if the action requiring such approval is authorized by
               the affirmative vote of the holders of Rights present or
               represented at and entitled to be voted at a meeting of the
               holders of Rights and representing a majority of the votes cast
               in respect thereof.  For the purposes hereof, each outstanding
               Right (other than Rights which are void pursuant to the
               provisions hereof) shall be entitled to one vote, and the
               procedures for the calling, holding and conduct of the meeting
               shall be those, as nearly as may be, which are provided in the
               Corporation's by-laws and the OBCA with respect to meetings of
               shareholders of the Corporation.

          (e)  Any amendments made by the Corporation to this Agreement pursuant
               to Subsection 5.5(a) which are required to maintain the validity
               of this Agreement as a result of any change in any applicable
               legislation or regulation thereunder shall:

               (i)  if made before the Separation Time, be submitted to the
                    shareholders of the Corporation at the next meeting of
                    shareholders and the shareholders may, by the majority
                    referred to in Subsection 5.5(b), confirm or reject such
                    amendment;

               (ii) if made after the Separation Time, be submitted to the
                    holders of Rights at a meeting to be called for on a date
                    not later than immediately following the next meeting of
                    shareholders of the Corporation and the holders of Rights
                    may, by resolution passed by the majority referred to in
                    Subsection 5.5(d), confirm or reject such amendment. 

          Any such amendment shall be effective from the date of the resolution
          of the Board of Directors adopting such amendment, until it is
          confirmed or rejected or until it ceases to be effective (as described
          in the next sentence) and where such amendment is confirmed it
          continues in effect in the form so confirmed.  If such amendment is
          rejected by the shareholders or the holders of Rights or is not
          submitted to the shareholders or holders of Rights as required, then
          such amendment shall cease to be effective from and after the
          termination of the meeting at which it was rejected or to which it
          should have been but was not submitted or from and after the date of
          the meeting of holders of Rights that should have been but was not
          held, and no subsequent resolution of the Board of Directors to amend
          this Agreement to substantially the same effect shall be effective
          until confirmed by the shareholders or holders of Rights as the case
          may be.


     5.6  FRACTIONAL RIGHTS AND FRACTIONAL SHARES
          ---------------------------------------

          (a)  The Corporation shall not be required to issue fractions of
               Rights or to distribute Rights Certificates which evidence
               fractional Rights.  After the Separation Time, in lieu of issuing
               fractional Rights, the Corporation shall pay to the holders of
               record of the Rights Certificates (provided the Rights
               represented by such Rights Certificates are not void pursuant to
               the provisions of Subsection 3.1(b), at the time such fractional
               Rights would otherwise be issuable), an amount in cash equal to
               the fraction of the Market Price of one whole Right that the
               fraction of a Right that would otherwise be issuable is of one
               whole Right.

          (b)  The Corporation shall not be required to issue fractions of
               Common Shares upon exercise of Rights or to distribute
               certificates which evidence fractional Common Shares.  In lieu of
               issuing fractional Common Shares, the Corporation shall pay to
               the registered holders of Rights Certificates, at the time such
               Rights are exercised as herein provided, an amount in cash equal
               to the fraction of the Market Price of one Common Share that the
               fraction of a Common Share that would otherwise be issuable upon
               the exercise of such Right is of one whole Common Share at the
               date of such exercise.

     5.7  RIGHTS OF ACTION
          ----------------

     Subject to the terms of this Agreement, all rights of action in respect of
     this Agreement, other than rights of action vested solely in the Rights
     Agent, are vested in the respective holders of the Rights.  Any holder of
     Rights, without the consent of the Rights Agent or of the holder of any
     other Rights, on such holder's own behalf and for such holder's own benefit
     and the benefit of other holders of Rights, may enforce, and may institute
     and maintain any suit, action or proceeding against the Corporation to
     enforce such holder's right to exercise such holder's Rights, or Rights to
     which such holder is entitled, in the manner provided in such holder's
     Rights and in this Agreement.  Without limiting the foregoing or any
     remedies available to the holders of Rights, it is specifically
     acknowledged that the holders of Rights would not have an adequate remedy
     at law for any breach of this Agreement and shall be entitled to specific
     performance of the obligations under, and injunctive relief against actual
     or threatened violations of the obligations of any Person subject to this
     Agreement.

     5.8  REGULATORY APPROVALS
          --------------------

     Any obligation of the Corporation or action or event contemplated by this
     Agreement shall be subject to the receipt of any requisite approval or
     consent from, or any requisite filings with, any governmental or regulatory
     authority, and without limiting the generality of the foregoing, necessary
     approvals of The Toronto Stock Exchange and other exchanges shall be
     obtained, such as to the issuance of Common Shares upon the exercise of
     Rights under Subsection 2.2(d).

     5.9  DECLARATION AS TO NON-CANADIAN AND NON-U.S. HOLDERS
          ---------------------------------------------------

     If in the opinion of the Board of Directors (who may rely upon the advice
     of counsel) any action or event contemplated by this Agreement would
     require compliance by the Corporation with the securities laws or
     comparable legislation of a jurisdiction outside Canada or the United
     States, the Board of Directors acting in good faith shall take such actions
     as it may deem appropriate to ensure such compliance.  In no event shall
     the Corporation or the Rights Agent be required to issue or deliver Rights
     or securities issuable on exercise of Rights to persons who are citizens,
     residents or nationals of any jurisdiction other than Canada or the United
     States, in which such issue or delivery would be unlawful without
     registration of the relevant Persons or securities for such purposes.

     5.10 NOTICES
          -------

          (a)  Notices or demands authorized or required by this Agreement to be
               given or made by the Rights Agent or by the holder of any Rights
               to or on the Corporation shall be sufficiently given or made if
               delivered, sent by registered or certified mail, postage prepaid
               (until another address is filed in writing with the Rights Agent)
               or sent by facsimile or other form of recorded electronic
               communication, charges prepaid and confirmed in writing, as
               follows:

               American ECO Corporation
               154 University Avenue
               Suite 200
               Toronto, Ontario
               M5H 3Y9

               Attention:     Mr. J. C. Pennie
               Telecopy No.   (416) 340-2457

          (b)  Notices or demands authorized or required by this Agreement to be
               given or made by the Corporation or by the holder of any Rights
               to or on the Rights Agent shall be sufficiently given or made if
               delivered, sent by registered or certified mail, postage prepaid
               (until another address is filed in writing with the Corporation),
               or sent by facsimile or other form of recorded electronic
               communication, charges prepaid and confirmed in writing, as
               follows:

               CIBC Mellon Trust Company
               393 University Avenue
               5th Floor
               Toronto, Ontario
               M5G 2M7
               
               Attention:     Assistant Vice-President, Client Services
               Telecopy No.   (416) 813-4555

          (c)  Notices or demands authorized or required by this Agreement to be
               given or made by the Corporation or the Rights Agent to or on the
               holder of any Rights shall be sufficiently given or made if
               delivered or sent by first class mail, postage prepaid, addressed
               to such holder at the address of such holder as it appears upon
               the register of the Rights Agent or, prior to the Separation
               Time, on the register of the Corporation for its Common Shares. 
               Any notice which is mailed or sent in the manner herein provided
               shall be deemed given, whether or not the holder receives the
               notice.

          (d)  Any notice given or made in accordance with this Section 5.10
               shall be deemed to have been given and to have been received on
               the day of delivery, if so delivered, on the third Business Day
               (excluding each day during which there exists any general
               interruption of postal service due to strike, lockout or other
               cause) following the mailing thereof, if so mailed, and on the
               day of telegraphing, telecopying or sending of the same by other
               means of recorded electronic communication (provided such sending
               is during the normal business hours of the addressee on a
               Business Day and if not, on the first Business Day thereafter). 
               Each of the Corporation and the Rights Agent may from time to
               time change its address for notice by notice to the other given
               in the manner aforesaid.

     5.11 COSTS OF ENFORCEMENT
          --------------------

     The Corporation agrees that if the Corporation fails to fulfil any of its
     obligations pursuant to this Agreement, then the Corporation shall
     reimburse the holder of any Rights for the costs and expenses (including
     legal fees) incurred by such holder to enforce his rights pursuant to any
     Rights or this Agreement.

     5.12 SUCCESSORS
          ----------

     All the covenants and provisions of this Agreement by or for the benefit of
     the Corporation or the Rights Agent shall bind and enure to the benefit of
     their respective successors and assigns hereunder.

     5.13 BENEFITS OF THIS AGREEMENT
          --------------------------

     Nothing in this Agreement shall be construed to give to any Person other
     than the Corporation, the Rights Agent and the holders of the Rights any
     legal or equitable right, remedy or claim under this Agreement; further,
     this Agreement shall be for the sole and exclusive benefit of the
     Corporation, the Rights Agent and the holders of the Rights.

     5.14 GOVERNING LAW
          -------------

     This Agreement and each Right issued hereunder shall be deemed to be a
     contract made under the laws of the Province of Ontario and for all
     purposes shall be governed by and construed in accordance with the laws of
     such Province applicable to contracts to be made and performed entirely
     within such Province.

     5.15 SEVERABILITY
          ------------

     If any term or provision hereof or the application thereof to any
     circumstance shall, in any jurisdiction and to any extent, be invalid or
     unenforceable, such term or provision shall be ineffective only as to such
     jurisdiction and to the extent of such invalidity or unenforceability in
     such jurisdiction without invalidating or rendering unenforceable or
     ineffective the remaining terms and provisions hereof in such jurisdiction
     or the application of such term or provision in any other jurisdiction or
     to circumstances other than those as to which it is specifically held
     invalid or unenforceable.

     5.16 EFFECTIVE DATE
          --------------

     This Agreement is effective and in full force and effect in accordance with
     its terms from and after the Effective Date.  At the first annual meeting
     of holders of Voting Shares of the Corporation following the Effective
     Date, the Corporation shall request confirmation of this Agreement by the
     holders of its Voting Shares.  If this Agreement is not confirmed by a
     majority of the votes cast in person or by proxy by holders of Voting
     Shares who vote in respect of confirmation of this Agreement at such
     meeting, then this Agreement and all outstanding Rights shall terminate and
     be void and of no further force and effect on and from the close of
     business on the date of termination of such meeting.

     5.17 RECONFIRMATION
          --------------

     Notwithstanding the confirmation of this Agreement pursuant to Section
     5.16, this Agreement must be reconfirmed by a resolution passed by a
     majority of greater than 50% of the votes cast by all holders of Voting
     Shares who vote in respect of such reconfirmation at every third annual
     meeting following the 1998 annual meeting.  If the Agreement is not so
     reconfirmed or is not presented for reconfirmation at such annual meeting,
     the Agreement and all outstanding Rights shall terminate and be void and of
     no further force and effect on and from the date of termination of the
     annual meeting; provided that termination shall not occur if a Flip-in
     Event has occurred (other than a Flip-in Event which has been waived
     pursuant to Subsection 5.1(a), (d) or (e) hereof), prior to the date upon
     which this Agreement would otherwise terminate pursuant to this Section
     5.17.

     5.18 DETERMINATIONS AND ACTIONS BY THE BOARD OF DIRECTORS
          ----------------------------------------------------

     The Board of Directors, upon the advice of counsel, shall have the
     exclusive power and authority to administer this Agreement and to exercise
     all rights and powers specifically granted to the Board of Directors or the
     Corporation as may be necessary or advisable in the administration of this
     Agreement.  All such actions, calculations and determinations (including
     all omissions with respect to the foregoing) which are done or made by the
     Board of Directors, in good faith, shall not subject the Board of Directors
     or any director of the Corporation to any liability to the holders of the
     Rights.

     5.19 TIME OF THE ESSENCE
          -------------------

     Time shall be of the essence of this Agreement.

     5.20 REGULATORY APPROVALS
          --------------------

     Any obligation of the Corporation or action or event contemplated by this
     Agreement, or any amendment to this Agreement, shall be subject to the
     receipt of any requisite approval or consent from any governmental or
     regulatory authority.  Without limiting the generality of the foregoing,
     the Corporation shall use its reasonable commercial efforts to:

          (a)  file, as soon as practicable following the first occurrence of a
               Flip-in Event, or as soon as required by law, as the case may be,
               a registration statement under the 1933 Securities Act and any
               such documentation as may be required to be filed under the
               Securities Act (Ontario) (and the securities legislation in all
               other applicable provinces of Canada) with respect to the
               securities purchasable upon exercise of the Rights on an
               appropriate form,

          (b)  cause such registration statement to become effective as soon as
               practicable after such filing, and

          (c)  cause such registration statement to remain effective (with a
               prospectus at all times meeting the requirements of the 1933
               Securities Act) until the earlier of:

               (i)  the date as of which the Rights are no longer exercisable
                    for such securities, and

               (ii) the Expiration Time.

     The Corporation shall also take such action as may be appropriate under the
     blue sky laws of the various states.  The Corporation may temporarily
     suspend, for a period of time not to exceed 90 days after the date set
     forth in Subsection 5.20(a), the exercisability of the Rights in order to
     prepare and file such registration statement and permit it to become
     effective.  Upon any such suspension, the Corporation shall issue a public
     announcement and shall give simultaneous written notice to the Rights Agent
     stating that the exercisability of the Rights has been temporarily
     suspended, as well as a public announcement and notice to the Rights Agent
     at such time as the suspension is no longer in effect.  Notwithstanding any
     provision of this Agreement to the contrary, the Rights shall not be
     exercisable in any jurisdiction unless the requisite qualifications in such
     jurisdiction shall have been obtained.

     5.21 EXECUTION IN COUNTERPARTS
          -------------------------

     This Agreement may be executed in any number of counterparts and each of
     such counterparts shall for all purposes be deemed to be an original and
     all such counterparts shall together constitute one and the same
     instrument.


     <PAGE>


     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
     duly executed as of the date first above written.


                                        AMERICAN ECO CORPORATION

                                        By:   /s/ Michael E. McGinnis
                                             --------------------------------
                                             Chairman of the Board, President
                                               and Chief Executive Officer


                                        By:   /s/ Bruce D. Tobecksen
                                             --------------------------------
                                             Senior Vice President and Chief
                                               Financial Officer

                                   

                                        THE CIBC MELLON TRUST COMPANY

                                        By:   /s/ B.M. Cornish
                                             --------------------------------
                                             Authorized Officer


                                        By:   /s/ Joyce Whitelaw
                                             --------------------------------
                                             Authorized Officer


     <PAGE>

                                     ATTACHMENT 1

                               AMERICAN ECO CORPORATION

                          SHAREHOLDER RIGHTS PLAN AGREEMENT

                             [Form of Rights Certificate]

     Certificate No. ____                                          Rights ______


     THE RIGHTS ARE SUBJECT TO TERMINATION ON THE TERMS SET FORTH IN THE
     SHAREHOLDER RIGHTS PLAN AGREEMENT.  UNDER CERTAIN CIRCUMSTANCES (SPECIFIED
     IN SUBSECTION 3.1(b) OF THE SHAREHOLDER RIGHTS PLAN AGREEMENT), RIGHTS
     BENEFICIALLY OWNED BY AN ACQUIRING PERSON OR CERTAIN RELATED PARTIES, OR
     TRANSFEREES OF AN ACQUIRING PERSON OR CERTAIN RELATED PARTIES, MAY BECOME
     VOID.

                                  RIGHTS CERTIFICATE

     This certifies that _____________, or registered assigns, is the registered
     holder of the number of Rights set forth above, each of which entitles the
     registered holder thereof, subject to the terms, provisions and conditions
     of the Shareholder Rights Plan Agreement, dated as of April 9, 1998, as the
     same may be amended or supplemented from time to time (the "Shareholder
     Rights Agreement"), between American ECO Corporation, a corporation duly
     incorporated under the Business Corporations Act, Ontario (the
     "Corporation") and The CIBC Mellon Trust Company, a trust company
     incorporated under the laws of the United States (the "RIGHTS AGENT")
     (which term shall include any successor Rights Agent under the Shareholder
     Rights Agreement), to purchase from the Corporation at any time after the
     Separation Time (as such term is defined in the Shareholder Rights
     Agreement) and prior to the Expiration Time (as such term is defined in the
     Shareholder Rights Agreement), one fully paid common share of the
     Corporation (a "COMMON SHARE") at the Exercise Price referred to below,
     upon presentation and surrender of this Rights Certificate with the Form of
     Election to Exercise (in the form provided hereinafter) duly executed and
     submitted to the Rights Agent at its principal office in any of the cities
     of ____________ or to the principal office of ___________ in ___________. 
     The Exercise Price per Right shall initially be one-half of the then
     current Market Price (as such term is defined in the Shareholder Rights
     Agreement) and shall be subject to adjustment in certain events as provided
     in the Shareholder Rights Agreement.

     This Rights Certificate is subject to all of the terms and provisions of
     the Shareholder Rights Agreement, which terms and provisions are
     incorporated herein by reference and made a part hereof and to which
     Shareholder Rights Agreement reference is hereby made for a full
     description of the rights, limitations of rights, obligations, duties and
     immunities thereunder of the Rights Agent, the Corporation and the holders
     of the Rights Certificates.  Copies of the Shareholder Rights Agreement are
     on file at the registered office of the Corporation.

     This Rights Certificate, with or without other Rights Certificates, upon
     surrender at any of the offices of the Rights Agent designated for such
     purpose, may be exchanged for another Rights Certificate or Rights
     Certificates of like tenor and date evidencing an aggregate number of
     Rights equal to the aggregate number of Rights evidenced by the Rights
     Certificate or Rights Certificates surrendered.  If this Rights Certificate
     shall be exercised in part, the registered holder shall be entitled to
     receive, upon surrender hereof, another Rights Certificate or Rights
     Certificates for the number of whole Rights not exercised.

     In certain circumstances described in the Rights Agreement, each Right
     evidenced hereby may entitle the registered holder thereof to purchase or
     to receive assets, debt securities or shares in the capital of the
     Corporation other than Common Shares, or more or less than one Common Share
     (or a combination thereof), all as provided in the Rights Agreement.  In
     certain circumstances described in the Rights Agreement, this Rights
     Certificate and the Rights represented hereby may become null and void.

     No holder of this Rights Certificate, as such, shall be entitled to vote or
     receive dividends or be deemed for any purpose the holder of Common Shares
     or of any other securities which may at any time be issuable upon the
     exercise hereof, nor shall anything contained in the Shareholder Rights
     Agreement or herein be construed to confer upon the holder hereof, as such,
     any of the Rights of a shareholder of the Corporation or any right to vote
     for the election of directors or upon any matter submitted to shareholders
     at any meeting thereof, or to give or withhold consent to any corporate
     action, or to receive notice of meetings or other actions affecting
     shareholders (except as provided in the Shareholder Rights Agreement), or
     to receive dividends or subscription rights, or otherwise, until the Rights
     evidenced by this Rights Certificate shall have been exercised as provided
     in the Shareholder Rights Agreement.

     This Rights Certificate shall not be valid or obligatory for any purpose
     until it shall have been countersigned by the Rights Agent.

     WITNESS the facsimile signature of the proper officers of the Corporation
     and its corporate seal.

     Date:                                           
          -------------------------


     AMERICAN ECO CORPORATION


     By:                                       By:
          -------------------------                --------------------------


     Countersigned:

     .


     By:                                        
          -------------------------


     <PAGE>

                                  FORM OF ASSIGNMENT


     (To be executed by the registered holder if such holder desires to transfer
     the Rights Certificate.) FOR VALUE RECEIVED ____________________ hereby
     sells, assigns and transfers unto 
                                        -------------------------------------

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

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

                    (Please print name and address of transferee.)

     the Rights represented by this Rights Certificate, together with all right,
     title and interest therein, and does hereby irrevocably constitute and
     appoint __________________, as attorney, to transfer the within Rights on
     the books of the Corporation, with full power of substitution.

     Dated:
          ------------------------------------------------------------
                                                   Signature                    

     Signature Guaranteed:    (Signature must correspond to name as written upon
                              the face of this Rights Certificate in every
                              particular, without alteration or enlargement or
                              any change whatsoever.)


     Signature must be guaranteed by a member firm of a recognized stock
     exchange in Canada or the United States, or a commercial bank or trust
     company having an office or correspondent in Canada or the United States.

     . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

                                     CERTIFICATE

                              (To be completed if true.)

     The undersigned party transferring Rights hereunder, hereby represents, for
     the benefit of all holders of Rights and Common Shares, that the Rights
     evidenced by this Rights Certificate are not, and, to the knowledge of the
     undersigned, have never been, Beneficially Owned by an Acquiring Person or
     an Affiliate or Associate thereof or a Person acting jointly or in concert
     with an Acquiring Person or an Affiliate or Associate thereof.  Capitalized
     terms shall have the meaning ascribed thereto in the Shareholder Rights
     Agreement.


                                   -----------------------------------
                                   Signature

     . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

                     (To be attached to each Rights Certificate.)


     <PAGE>


                             FORM OF ELECTION TO EXERCISE

     (To be exercised by the registered holder if such holder desires to
     exercise the Rights Certificate.)

     TO:                                           
          -----------------------------------------

     The undersigned hereby irrevocably elects to exercise
     ______________________ whole Rights represented by the attached Rights
     Certificate to purchase the Common Shares or other securities, if
     applicable, issuable upon the exercise of such Rights and requests that
     certificates for such securities be issued in the name of:


     -----------------------------------------------------------------
     (Name)

     -----------------------------------------------------------------
     (Address)

     -----------------------------------------------------------------
     (City and Province)

     -----------------------------------------------------------------
     Social Insurance Number or other taxpayer identification number.


     If such number of Rights shall not be all the Rights evidenced by this
     Rights Certificate, a new Rights Certificate for the balance of such Rights
     shall be registered in the name of and delivered to:


     ---------------------------------------------------------------------------
     (Name)

     ---------------------------------------------------------------------------
     (Address)

     ---------------------------------------------------------------------------
     (City and Province)

     ---------------------------------------------------------------------------
     Social Insurance Number or other taxpayer identification number.

     Dated:
          ----------------------------------------------------------------------

     Signature Guaranteed:
                         -------------------------------------------------------
                                   (Signature must correspond to name as written
                                   upon the face of this Rights Certificate in
                                   every particular, without alteration or
                                   enlargement or any change whatsoever.)

     Signature must be guaranteed by a member firm of a recognized stock
     exchange in Canada, the United States or a commercial bank or trust company
     having an office or correspondent in Canada or the United States.

     . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


     <PAGE>

                                     CERTIFICATE

                              (To be completed if true.)

     The undersigned party exercising Rights hereunder, hereby represents, for
     the benefit of all holders of Rights and Common Shares, that the Rights
     evidenced by this Rights Certificate are not, and, to the knowledge of the
     undersigned, have never been, Beneficially Owned by an Acquiring Person or
     an Affiliate or Associate thereof or a Person acting jointly or in concert
     with an Acquiring Person or an Affiliate or Associate thereof.  Capitalized
     terms shall have the meaning ascribed thereto in the Shareholder Rights
     Agreement.



                                   ---------------------------------------------
                                   Signature


     . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

                     (To be attached to each Rights Certificate.)


     <PAGE>

                                        NOTICE


     In the event the certification set forth above in the Forms of Assignment
     and Election is not completed, the Corporation will deem the Beneficial
     Owner of the Rights evidenced by this Rights Certificate to be an Acquiring
     Person or an Affiliate or Associate thereof.  No Rights Certificates shall
     be issued in exchange for a Rights Certificate owned or deemed to have been
     owned by an Acquiring Person or an Affiliate or Associate thereof, or by a
     Person acting jointly or in concert with an Acquiring Person or an
     Affiliate or Associate thereof.


     



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