Exhibit 10.1

                                                                  August 7, 2002


Dr. Richard Lister
181 Forest Hill Road
Toronto, Ontario
M5P 2N3


Dear Richard:

         This letter (the "AGREEMENT") shall serve to set forth our mutual
understanding and agreement as at August 7, 2002 (the "EFFECTIVE DATE")
regarding your continued employment with Zemex Corporation (the "CORPORATION"),
pursuant to the following terms and conditions:

1.       DEFINITIONS. In this Agreement, unless the context otherwise requires,
         the following terms shall have the following meanings:

         "BOARD" shall mean the board of directors of the Corporation.

         "BUSINESS DAY" means a day other than a Saturday, Sunday, statutory
         holiday or other day on which banks are generally closed in Toronto.

         "CAUSE" shall mean any act or omission by you which would in law permit
         the Corporation to, without notice or payment in lieu of notice,
         terminate your employment.

         "CONFIDENTIAL INFORMATION" means non-public information not generally
         known about the Corporation and/or its affiliates, which the
         Corporation and/or any of its affiliates desires to protect and keep
         secret and confidential (including information and trade secrets
         conceived, originated, discovered or developed by the officers,
         executives or consultants either employed by or retained by the
         Corporation or its affiliates) concerning the business and affairs of
         the Corporation and/or its affiliates including, without limitation:

         (a)      knowledge of all business or financial opportunities which are
                  or may be available to the Corporation and/or its affiliates;




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         (b)      all inventions and product enhancements and developments; or

         (c)      the present and contemplated plans, strategies, costs, prices,
                  systems, pricing policies and financial information used by
                  the Corporation or its affiliates in connection with its
                  business and client lists and information concerning the
                  customers of the Corporation and/or its affiliates, their
                  names, addresses, needs and preferences.

         It is understood, however, that Confidential Information shall not
         include Confidential Information that becomes part of the public domain
         by publication or otherwise, not due to any unauthorized act or
         omission by you.

         "DISABILITY" shall mean your inability to substantially fulfil your
         duties on behalf of the Corporation such that you have been approved
         for and have been in receipt of long term disability benefits for a
         period of six (6) consecutive months pursuant to the Corporation's long
         term disability plan.

         "ESPP" means the Corporation's employee stock purchase plan as the same
         is in effect at any relevant time.

         "OPTIONS" means those options granted to you pursuant to the Stock
         Option Plan.

         "SHARES" means those shares granted to you pursuant to the ESPP.

         "STOCK OPTION PLAN" means the Corporation's stock option plan as the
         same is in effect at any relevant time.

         "ZEMEX EXECUTIVE RETIREE ACCOUNT" means the Corporation's retiree
         benefit plan.

2.       TERM. Subject to the provisions for termination hereinafter stated,
         your term of employment will continue from the date hereof until
         January 15, 2004, (the "EMPLOYMENT TERM") in the following manner:

         (a)      from the Effective Date until January 15, 2003 (the "PRESIDENT
                  TERM"), you shall continue your employment as President and
                  Chief Executive Officer of the Corporation pursuant to the
                  terms of this Agreement including the terms and conditions as
                  contained in Schedule A and excluding those in Schedule B;
                  and,

         (b)      for the period from January 16, 2003 until January 15, 2004
                  (the "CONSULTANT TERM"), you shall assume and be employed in
                  the position of Consultant to the Corporation pursuant to the
                  terms of this Agreement




                                      - 3 -

                  including the terms and conditions as contained in Schedule B
                  and excluding those in Schedule A.

         For greater certainty, your employment with the Corporation, in any
         manner whatsoever, shall, unless earlier terminated as herein provided,
         terminate on January 15, 2004.

3.       EXPENSES. The Corporation shall reimburse you for all out-of-pocket
         expenses reasonably and properly incurred by you in connection with
         your duties hereunder, provided that you shall furnish in a timely
         manner to the Corporation statements and reports for all such expenses.

4.       STOCK OPTIONS. In addition to any Options and Shares held by you as at
         the Effective Date, you shall be eligible for consideration to
         participate in and receive Options and acquire Shares pursuant to the
         Stock Option Plan and the ESPP and, any other share compensation
         arrangements of the Corporation in effect from time to time in which
         senior management of the Corporation are generally eligible to
         participate for the duration of the Employment Term. You shall have
         until December 31, 2004 to exercise any unexercised Options or purchase
         any Shares.

5.       VESTED STOCKS AND LOANS. The parties agree that any outstanding loan
         obligations, common shares held by you in the capital of the
         Corporation, and any unexercised stock options will be subject to the
         terms and conditions contained in the agreement attached as Schedule
         "C" to this Agreement. In addition, you shall be entitled to receive a
         lump sum payment of US$885,000.00 to be paid on the Effective Date.

6.       PENSION AND RETIRING ARRANGEMENTS. Until the termination of your
         employment, you will continue to participate in and accrue pension
         under the Corporation's pension plan, in accordance with the terms
         thereof, as such may be amended from time to time. In addition, the
         Corporation shall use its best efforts to increase your existing U.S.
         pension limit from U.S.$43,000.00 to the newly revised limit of
         U.S.$55,000.00 per annum. Should this not be possible the parties agree
         to share the costs equally of an annuity to provide for the difference
         between the limits on a per annum basis. For greater certainty, each
         party shall bear its own costs related to the purchase of its portion
         of the annuity including, but not limited to, any tax consequences
         incurred as a result of the purchase of this annuity.

7.       TERMINATION. Your employment hereunder may be terminated by either the
         Corporation or by you prior to the end of the Employment Term, as the
         case may be, exercised by notice in writing at any time upon the
         happening of any of the




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         following events, in which event your employment shall terminate upon
         the date specified in such notice:

         (a)      by the Corporation for Cause;

         (b)      by the Corporation in the event of your death;

         (c)      by the Corporation without Cause (and other than for the
                  circumstances in paragraph 7(b), 7(d) or 7(e)), in which case
                  you will receive the following:

                  (i)      a lump sum equivalent to the base salary that you
                           would have earned for the remainder of the Employment
                           Term (the "NOTICE PERIOD") or at your option, salary
                           continuation in accordance with the Corporation's
                           payroll practices for the remainder of the Employment
                           Term;

                  (ii)     if such termination occurs prior to January 15, 2003,
                           an amount in lieu of the value of any bonus
                           contemplated under paragraph A.3(b) that you would
                           have earned had you been employed until the end of
                           the President Term (such amount to be calculated as
                           the average of the bonus payments received by you for
                           the 3 years prior to the termination of your
                           employment);

                  (iii)    continuation, during the Notice Period, of your
                           participation in the benefit plans referenced in
                           paragraph B.4 (excluding short-term disability,
                           long-term disability and current life insurance
                           benefits which shall cease at the end of the
                           statutory notice period,) or if a plan or program
                           does not permit the continuance of all or some of the
                           benefits for some or all of the Notice Period, the
                           Corporation shall make other arrangements at its own
                           expense to make substantially similar benefits
                           available to you, it being understood that you and
                           your wife shall participate in the Zemex Executive
                           Retiree Account commencing at the end of the Notice
                           Period for your life; and

                  (iv)     all Options and Shares will vest immediately upon the
                           Effective Date; and the Options shall cease to be
                           exercisable at the later of their respective expiry
                           date and December 31, 2004, provided that the maximum
                           term of any such Option or Share shall not exceed the
                           period permitted by the Stock Option Plan or the
                           ESPP, as the case may be.



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         (d)      by the Corporation, in the event of your Disability, in which
                  case, you shall be entitled, to the extent you continue to
                  qualify, to receive the long term disability benefits for
                  executives of the Corporation in effect at such time in lieu
                  of any other compensation whatsoever, together with all
                  amounts owing to the effective date of termination; or

         (e)      by you, by giving three (3) month's written notice to the
                  Corporation.

8.       MITIGATION. You shall not be required to mitigate the amount of any
         payments provided for under paragraph 7(c) by seeking other employment
         or otherwise, nor shall the amount of any payment provided for in such
         paragraph be reduced by any compensation earned by you as a result of
         employment by another employer during the Employment Term.

9.       RELEASE. Each of the Corporation and you confirm that the provisions of
         paragraph 7(c) are reasonable and the total amount payable as outlined
         therein is an amount which has been agreed between them to be payable
         hereunder and is a reasonable estimate of the damages which will be
         suffered by you in the event of a termination without Cause and shall
         not be construed as a penalty. Except as provided herein, you agree to
         accept the payment provided for in paragraph 7(c) in full satisfaction
         of any and all claims you have or may have against the Corporation with
         the exception of any pension benefits owing pursuant to the
         Corporation's pension plan, any pension or retirement arrangements in
         accordance with paragraph 6 of this Agreement and any benefits pursuant
         to the Executive Retiree Account and you agree to release the
         Corporation with respect to same upon payment of said sum.

10.      CONFIDENTIAL INFORMATION. You agree that all right, title and interest
         in and to the Confidential Information shall remain the exclusive
         property of the Corporation and the Confidential Information shall be
         held in trust by you for the benefit of the Corporation. You shall not,
         directly or indirectly, use or exploit the Confidential Information for
         any operational, commercial or other purpose whatsoever or in any
         manner detrimental to the Corporation or disclose, disseminate, impart
         or grant access to the Confidential Information to any person for any
         purpose.

         You shall not copy, reproduce in any form or store any retrieval system
         or database the Confidential Information without the prior written
         consent of the Corporation, except for such copies, reproductions and
         storage as may be reasonably required internally by you for the purpose
         for which you receive the Confidential Information. You shall return
         all Confidential Information to the Corporation on the termination of
         your employment or at any other time as may be requested.



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11.      NON-SOLICITATION. You shall not during the term of this Agreement and
         for a period of twelve (12) months following termination of employment
         for any reason on your own behalf or on behalf of any Person, whether
         directly or indirectly, in any capacity whatsoever, alone or through or
         in connection with any Person:

         (a)      contact, deal with, pursue, accept, receive or solicit any
                  business from any person who you know to be a prospective,
                  current or former client (a "CLIENT") of the Corporation for
                  the purpose of selling to the Client any products or services
                  that are the same as or substantially similar to, or in any
                  way competitive with, the products or services sold or
                  intended to be sold by the Corporation, to your knowledge;

         (b)      solicit the employment or engagement of or otherwise entice
                  away from the employment of the Corporation or any affiliate
                  any individual who is employed by the Corporation or any
                  affiliate at the relevant time;

         (c)      procure or assist any Person to solicit the employment or
                  engagement of or otherwise entice away from the employment of
                  the Corporation or any affiliate any individual who is
                  employed by the Corporation. It is understood, however, that
                  the giving of a reference, whether verbal or written, by you
                  to a potential third party, on behalf of an employee will not
                  constitute a breach of paragraph 11(b).

12.      SURVIVAL. Notwithstanding the termination of this Agreement, (a)
         neither party shall be released from any obligation that accrued prior
         to the date of termination and (b) each party shall remain bound by the
         provisions of this Agreement which by their terms impose obligations
         upon that party that extend beyond the termination of this Agreement
         and more particularly, but not limited to, paragraphs 7, 10, 11 and B.4
         hereof.

13.      ASSIGNMENT. Except as otherwise expressly provided herein, neither this
         Agreement nor any rights or obligations shall be assignable by either
         party without the prior written consent of the other party hereto.

14.      AMENDMENT AND WAIVER. No supplement, modification, amendment or waiver
         of this Agreement shall be binding unless executed in writing by both
         parties. No waiver of any of the provisions of this Agreement shall
         constitute a waiver of any other provision (whether or not similar) nor
         shall such waiver constitute a continuing waiver unless otherwise
         expressly provided.



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15.      SUCCESSORS AND ASSIGNS. This Agreement shall enure to the benefit of
         and be binding upon the parties and their respective heirs, executors
         and administrators or successors and permitted assigns, as the case may
         be.

16.      SEVERABILITY. If any provision in this Agreement is determined to be
         invalid, void or unenforceable by the decision of any court of
         competent jurisdiction, which determination is not appealed or
         appealable for any reason whatsoever, the provision in question shall
         not be deemed to affect or impair the validity or enforceability of any
         other provision of this Agreement and such invalid or unenforceable
         provision or portion thereof shall be severed from the remainder of
         this Agreement.

17.      ENTIRE AGREEMENT. This Agreement constitutes the entire agreement
         between the parties with respect to the subject matter contemplated
         herein and supersedes and replaces any provision of any other document
         heretofore entered into by them with respect to the subject matter of
         this Agreement, including but not limited to the Supplemental
         Retirement Plan for key employees dated January 1, 2001 and the Change
         in Control Agreement dated October 1, 1999.

18.      INDEPENDENT LEGAL ADVICE. You acknowledge that you have been advised to
         obtain, and that you have obtained or have been afforded the
         opportunity to obtain, independent legal advice with respect to this
         Agreement and that you understand the nature and consequences of this
         Agreement.

19.      GOVERNING LAW. This Agreement shall be governed by and construed in
         accordance with the laws of the Province of Ontario and the laws of
         Canada applicable therein.

20.      INDEMNIFICATION. If, at any time, a dispute arises between the parties
         regarding the interpretation of this Agreement, all reasonable legal
         fees and expenses incurred by you relating to this dispute shall be
         reimbursed by the Corporation upon receipt of proof of payment.

21.      COUNTERPARTS. This Agreement may be executed by the parties in one or
         more counterparts, each of which when so executed and delivered shall
         be deemed to be an original and such counterparts shall together
         constitute one and the same instrument.



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If the foregoing correctly sets forth your understanding with respect to your
employment by the Corporation, please so indicate by signing where indicated
below.


                                       ZEMEX CORPORATION



                                       By: /s/ Jonathan Goodman
                                           -------------------------------------
                                           Name: Jonathan Goodman
                                           Title: Director and Officer of the
                                           Board of Directors and Chair of the
                                           Compensation Committee


AGREED AND ACCEPTED
as of the date first written above.


/s/ Richard L. Lister
- ------------------------------------
Richard Lister



                                  SCHEDULE "A"

         Further to Article 2 of the Agreement, your employment as President and
Chief Executive Officer with the Corporation shall continue pursuant to the
following terms and conditions:

A.1      TERM. Subject to the provisions for termination contained in Article 7
         of the Agreement, from the Effective Date to January 15, 2003 (the
         "President Term"), you shall continue your employment as President and
         Chief Executive Officer of the Corporation.

A.2      DUTIES. Subject always to the control and direction of the Board in
         accordance with the Corporation's corporate governance practices from
         time to time, you shall:

         (a)      faithfully serve the Corporation and carry out those
                  responsibilities as are necessary to perform the functions
                  associated with the position of President and Chief Executive
                  Officer;

         (b)      devote all of your working time, skill, experience and
                  attention to carry out the responsibilities consistent with
                  the position of President and Chief Executive Officer and not
                  at any time engage in conduct which would significantly
                  interfere with the performance of your duties or which would
                  constitute a conflict with the interest of the Corporation or
                  its affiliates;

         (c)      use your best efforts to promote the success and the best
                  interests of the Corporation and its affiliates;

         (d)      not incur any debt, liability or obligation, or enter into any
                  contract or agreement for, or on behalf of, or in the name of
                  the Corporation except in the ordinary course of business
                  unless duly authorized by the Corporation; and

         (e)      follow the lawful policies and procedures established by the
                  Board from time to time and which have been documented in
                  writing.

A.3      REMUNERATION. As compensation for the performance of your duties during
         the President Term:

         (a)      the Corporation shall pay to you a salary at the rate of
                  U.S.$300,000.00 per annum, payable bi-weekly in arrears less
                  those deductions, withholdings or contributions which are
                  required by law; and

         (b)      you shall be entitled to participate in any incentive
                  compensation plan which is implemented by the Corporation in
                  the manner and to the extent



                                      - 2 -

                  that senior executives of the Corporation are permitted to
                  participate as determined by the Board, in its sole
                  discretion.

A.4      BENEFITS. Subject to Section 7(c) of the Agreement, throughout the
         President Term, you shall be entitled to continue to participate in all
         of the employee benefit plans for senior management of the Corporation
         resident in Canada in effect from time to time (the "BENEFIT PLANS") in
         accordance with the terms of such Benefit Plans. It is understood and
         agreed that the Benefit Plans may be amended by the Corporation from
         time to time. Your vacation entitlement will continue to be covered by
         company policy in effect as of the Effective Date. Subject to the
         provisions contained in Schedule B, upon completion of the President
         Term, any entitlement to the above Benefit Plans and vacation shall
         cease.



                                  SCHEDULE "B"

         Further to Article 2 of the Agreement, your employment as President and
Chief Executive Officer shall cease upon completion of the President Term and on
January 15, 2003 you shall assume the position of Consultant to the Corporation
pursuant to the following terms and conditions:

B.1      TERM. Subject to the provisions for termination contained Article 8 of
         the Agreement, from January 16, 2003 until January 15, 2004 (the
         "Consultant Term"), you shall continue your employment as Consultant to
         the Corporation.

B.2      DUTIES. Subject always to the control and direction of the Board in
         accordance with the Corporation's corporate governance practices from
         time to time, you shall:

         (a)      provide consulting services and special projects for the
                  Corporation as may be assigned from time to time, for a
                  maximum of one hundred (100) days for the duration of the
                  Consultant Term, such services to be performed during normal
                  business hours, Monday through Friday, holidays excepted;

         (b)      faithfully serve the Corporation and carry out those
                  responsibilities as are necessary to perform the services as
                  may be assigned from time to time;

         (c)      not incur any debt, liability or obligation, or enter into any
                  contract or agreement for, or on behalf of, or in the name of
                  the Corporation unless duly authorized by the Corporation in
                  writing; and,

         (d)      follow the lawful policies and procedures established by the
                  Board from time to time and which have been documented in
                  writing.

B.3      REMUNERATION. As compensation for the performance of your duties during
         the Consultant Term, the Corporation shall pay to you a salary at the
         rate of U.S.$210,000.00 per annum, payable bi-weekly in arrears less
         those deductions, withholdings or contributions which are required by
         law. At your request, the salary shall be paid by either of the
         Corporation or Zemex U.S.

B.4      BENEFITS. Subject to Section 7(c) of the Agreement, throughout the
         Consultant Term you shall be entitled to continue to participate in the
         Benefit Plans in accordance with the terms of such Benefit Plans
         provided that if you are no longer eligible to participate in any of
         such plans, you and your wife will immediately be covered by the Zemex
         Executive Retiree Account and for greater certainty, and
         notwithstanding anything in this Section B.4, you and your wife will be
         covered by the Zemex Retiree Account for the length of your life
         commencing at the end of the Consultant Term.



                                                                  EXECUTION COPY

                                  SCHEDULE "C"

                                    AGREEMENT

         Agreement dated August 7, 2002 (the "AGREEMENT") among Richard L.
Lister ("LISTER"), Zemex Corporation ("ZEMEX") and The Dundee Bank ("DUNDEE").

         RECITALS:

         (a)      Lister is the beneficial owner of 534,402 issued and
                  outstanding common shares in the capital of Zemex;

         (b)      Lister and Zemex have entered into an employment agreement
                  dated as of the date hereof (the "EMPLOYMENT AGREEMENT")
                  whereby Lister and Zemex have agreed to enter into this
                  Agreement;

         (c)      Lister is eligible to exercise options to purchase common
                  shares in the capital of Zemex ("OPTIONS") pursuant to Zemex's
                  1999 stock option plan (the "STOCK OPTION PLAN");

         (d)      Lister is indebted to the Bank of America for US$600,000 plus
                  interest (the "BANK LOAN");

         (e)      Lister is indebted (i) to Zemex for US$500,000 plus interest
                  (the "RECEIVABLE DEBT"), and (ii) to Zemex U.S. Corporation
                  ("ZEMEX U.S.") for US$1,259,000 evidenced by a promissory note
                  (the "EXISTING NOTE LOAN");

         (f)      Zemex U.S. has guaranteed Lister's obligations under the Bank
                  Loan (the "GUARANTEE"); and

         (g)      Lister, Zemex and Dundee intend to complete various
                  transactions relating to (i) the common shares held by Lister
                  in the capital of Zemex, and (ii) the repayment of the
                  Existing Note Loan, the Bank Loan and the Receivable Debt.

         In consideration of the foregoing and the mutual agreements contained
herein (the receipt and adequacy of which are hereby acknowledged), the parties
agree as follows:


SECTION 1  CLOSING DATE.

         Lister, Zemex and Dundee hereby agree that the transactions
contemplated in this Agreement shall be completed on August 7, 2002, or such
earlier or later date as the parties may agree in writing (the "CLOSING DATE").



                                                                  EXECUTION COPY

                                       -2-

SECTION 2  THE TRANSACTIONS.

22.      Lister hereby agrees to sell, assign and transfer to Dundee and Dundee
         agrees to purchase from Lister on the Closing Date, 100,000 common
         shares held by Lister in the capital of Zemex (the "DUNDEE SHARES") for
         US$6.96 per share. The aggregate purchase price of US$696,000 shall be
         payable as directed by Lister.

23.      Lister hereby agrees to sell, assign and transfer to Zemex and Zemex
         agrees to purchase from Lister on the Closing Date, 340,000 common
         shares held by Lister in the capital of Zemex (the "ZEMEX SHARES") for
         US$6.96 per share. The aggregate purchase price of US$2,366,400 shall
         be payable as directed by Lister.

24.      Zemex hereby agrees to pay to Lister on the Closing Date, the aggregate
         amount of US$256,800 in connection with the election by Lister, as of
         June 28, 2002, to require Zemex to purchase for cancellation 120,000
         Options exercisable at US$6.26 and 100,000 Options exercisable at
         US$5.21 (collectively, the "REPURCHASED OPTIONS") pursuant to Section
         6(5) of the Stock Option Plan. The aggregate proceeds for the exercise
         of the Repurchased Options shall be payable as directed by Lister.

25.      Lister hereby agrees, on the Closing Date:

         (a)      to use US$613,588.34 from the proceeds of the purchase and
                  sale of the Zemex Shares to repay the principal amount plus
                  interest outstanding under the Bank Loan;

         (b)      to use US$1,259,000 from the proceeds of the purchase and sale
                  of the Zemex Shares to repay the principal amount outstanding
                  under the Existing Note Loan; and

         (c)      to use US$511,136.11 from the proceeds of the purchase and
                  sale of the Zemex Shares and from the proceeds of the purchase
                  for cancellation of the Repurchased Options to repay the
                  principal amount outstanding under the Receivable Debt.

26.      Zemex hereby agrees to issue on the Closing Date, Options to purchase
         165,000 common shares in the capital of Zemex to Lister. Such Options
         shall vest as of the Closing Date and be exercisable at US$6.96 per
         common share.

27.      Zemex hereby agrees to grant on the Closing Date, a bonus of US$885,000
         (the "BONUS") as set out in the Employment Agreement. The Bonus shall
         be paid on August 15, 2002.



                                                                  EXECUTION COPY

                                       -3-

DELIVERIES.

         Subject to the other provisions of this Agreement:

         (a)      Lister hereby agrees to deliver on the Closing Date:

                  (i)      to Dundee, share certificates representing, in the
                           aggregate, the Dundee Shares;

                  (ii)     to Zemex, share certificates representing, in the
                           aggregate, the Zemex Shares;

                  (iii)    to cause the Bank of America to deliver a release by
                           the Bank of America, in favour of Lister of all
                           obligations under the Bank Loan, and a release by the
                           Bank of America, in favour of Zemex U.S. of the
                           Guarantee; and

                  (iv)     such other documents as may be reasonably requested
                           by Zemex or Dundee, as the case may be, to give
                           effect to the transactions contemplated herein.

         (b)      Zemex hereby agrees to deliver to Lister on the Closing Date,
                  payment for the proceeds payable to Lister for the purchase
                  and sale of the Zemex Shares and the Repurchased Options as
                  set out in Section 2 above, and such documents as may be
                  reasonably required to give effect to the transactions
                  contemplated herein, including, without limitation a release
                  by Zemex, and to cause Zemex U.S. to deliver a release by
                  Zemex U.S., in favour of Lister of all obligations of Lister
                  under the Receivable Debt and Existing Note Loan; and

         (c)      Dundee hereby agrees to deliver to Lister on the Closing Date
                  payment for the proceeds payable to Lister for the purchase
                  and sale of the Dundee Shares as set out in Section 2 above,
                  and such documents as may be reasonably requested by Lister to
                  give effect to the transactions contemplated herein.


LISTERS' REPRESENTATIONS AND WARRANTIES.

         Lister hereby represents and warrants as follows to each of Zemex and
Dundee with respect to himself only and acknowledges and confirms that Zemex and
Dundee are relying upon such representations and warranties in connection with
the closing of the transactions contemplated herein:

         (h)      QUALIFICATION. Lister has all necessary power to enter into
                  and perform his obligations under this Agreement;



                                                                  EXECUTION COPY

                                       -4-

         (i)      VALIDITY OF AGREEMENT. The execution, delivery and performance
                  by Lister of this Agreement:

                  (i)      do not (or would not with the giving of notice, the
                           lapse of time or the happening of any other event or
                           condition) result in a breach or a violation of, or
                           conflict with, or allow any other party to exercise
                           any rights under any material contracts or
                           instruments to which he is a party or pursuant to
                           which any of his assets or property may be affected;
                           and

                  (ii)     will not result in the violation of any law;

         (j)      EXECUTION AND BINDING OBLIGATION. This Agreement has been duly
                  executed and delivered by Lister and constitutes a legal,
                  valid and binding obligation of Lister enforceable against him
                  in accordance with its terms;

         (k)      NO OTHER AGREEMENTS TO PURCHASE. Except for Zemex's or
                  Dundee's rights under this Agreement, no other party has any
                  written or oral agreement, option or warrant or any right or
                  privilege (whether by law, pre-emptive or contractual) capable
                  of becoming such for the purchase or acquisition from Lister
                  of any of the Zemex Shares or the Dundee Shares;

         (l)      TITLE TO THE ZEMEX SHARES AND THE DUNDEE SHARES. The Zemex
                  Shares and Dundee Shares held by Lister are owned by Lister as
                  the registered owner with good title, free and clear of all
                  liens. Upon completion of the transactions contemplated by
                  this Agreement, each of Zemex and Dundee will have good and
                  valid title to the Zemex Shares and Dundee Shares,
                  respectively, free and clear of all liens; and

         (m)      RESIDENCE. Lister is not a non-resident of Canada for the
                  purposes of the Income Tax Act (Canada).

DUNDEE'S REPRESENTATIONS AND WARRANTIES.

         Dundee hereby represents and warrants as follows to each of Lister and
Zemex and acknowledges and confirms that Lister and Zemex are relying upon such
representations and warranties in connection with the closing of the
transactions contemplated herein:

         (d)      QUALIFICATION. Dundee has all necessary power to enter into
                  and perform its obligations under this Agreement;



                                                                  EXECUTION COPY

                                       -5-

         (e)      VALIDITY OF AGREEMENT. The execution, delivery and performance
                  by Dundee of this Agreement;

                  (i)      has been duly authorized by all necessary action on
                           the part of Dundee;

                  (ii)     does not (or would not within the giving of notice,
                           the lapse of time or the happening of any other event
                           or condition) result in a breach or a violation of,
                           or conflict with, or allow any other party to
                           exercise any rights under any material contracts or
                           instruments to which it is a party or pursuant to
                           which any of its assets or property may be affected;
                           and

                  (iii)    will not result in the violation of any law; and

         (f)      EXECUTION AND BINDING OBLIGATION. This Agreement has been duly
                  executed and delivered by Dundee and constitutes a legal,
                  valid and binding obligation of Dundee enforceable against it
                  in accordance with its terms.


ZEMEX'S REPRESENTATIONS AND WARRANTIES.

         Zemex hereby represents and warrants as follows to each of Lister and
Dundee and acknowledges and confirms that Lister and Dundee are relying upon
such representations and warranties in connection with the closing of the
transactions contemplated herein:

         (g)      QUALIFICATION. Zemex has all necessary power to enter into and
                  perform its obligations under this Agreement;

         (h)      VALIDITY OF AGREEMENT. The execution, delivery and performance
                  by Zemex of this Agreement;

                  (i)      have been duly authorized by all necessary action on
                           the part of Zemex;

                  (ii)     do not (or would not with the giving of notice, the
                           lapse of time or the happening of any other event or
                           condition) result in a breach or a violation of, or
                           conflict with, or allow any other party to exercise
                           any rights under any material contracts or
                           instruments to which it is a party or pursuant to
                           which any of its assets or property may be affected;

                  (iii)    will not result in the violation of any law; and



                                                                  EXECUTION COPY

                                       -6-

         (i)      EXECUTION AND BINDING OBLIGATION. This Agreement has been duly
                  executed and delivered by Zemex and constitutes a legal, valid
                  and binding obligation of Zemex enforceable against it in
                  accordance with its terms.


CONDITIONS FOR THE BENEFIT OF ZEMEX AND DUNDEE.

         The closing of the transactions contemplated in this Agreement are
subject to the following conditions to be fulfilled or performed prior to the
closing of the transactions contemplated in this Agreement, which conditions are
for the exclusive benefit of Zemex or Dundee and may be waived, in whole or in
part, by Zemex or Dundee in their sole discretion:

         (n)      TRUTH OF REPRESENTATIONS AND WARRANTIES. The representations
                  and warranties of Lister contained in this Agreement shall
                  have been true and correct as of the date of this Agreement
                  and shall be true and correct as of the Closing Date with the
                  same force and effect as if such representations and
                  warranties had been made on and as of such date;

         (o)      PERFORMANCE OF COVENANTS. Lister shall have fulfilled or
                  complied with all covenants contained in this Agreement to be
                  fulfilled or complied with by him at or prior to the closing
                  of the transactions contemplated in this Agreement; and

         (p)      REPAYMENT OF EXISTING DEBT. The Bank Loan, the Receivable Debt
                  and the Existing Note Loan shall have been repaid in full and
                  all security related thereto shall have been released.


CONDITIONS FOR THE BENEFIT OF LISTER.

         The closing of the transactions contemplated in this Agreement are
subject to the following conditions to be fulfilled or performed prior to the
closing of the transactions contemplated in this Agreement, which conditions are
for the exclusive benefit of Lister may by waived, in whole or in part, by
Lister in his sole discretion:

         (j)      TRUTH OF REPRESENTATIONS AND WARRANTIES. The representations
                  and warranties of each of Zemex and Dundee contained in this
                  Agreement shall have been true and correct as of the date of
                  this Agreement and shall be true and correct as of the Closing
                  Date with the same force and effect as if such representations
                  and warranties have been made on and as of such date; and



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                                       -7-

         (k)      PERFORMANCE OF COVENANTS. Dundee and Zemex shall have
                  fulfilled or complied with all covenants contained in this
                  Agreement to be fulfilled or complied with by each of them at
                  or prior to the closing of the transactions contemplated in
                  this Agreement.

NO REPRESENTATION RESPECTING SECURITIES LAWS.

Lister and Zemex hereby acknowledge and agree:

         (q)      that Dundee has retained and sought the advice of counsel with
                  respect to this Agreement and the transactions contemplated
                  herein; and

         (r)      that Dundee makes no representations herein respecting
                  compliance with any securities laws applicable to this
                  Agreement and the transactions contemplated herein.

Dundee hereby acknowledges that Lister and Zemex make no representations herein
respecting the applicability of any securities laws to the purchase and sale of
the Dundee Shares.

MATTERS RELATED TO VOTING.

         Lister and Dundee hereby agree as follows:

         (s)      Lister shall cast the votes attached to the common shares held
                  by Lister in the capital of Zemex on the Closing Date, or such
                  common shares that may be purchased by Lister pursuant to
                  Options held by him on the Closing Date, with the exception of
                  any common shares in the capital of Zemex purchased or
                  otherwise acquired by Lister after the Closing Date (the
                  "REMAINING LISTER Shares") in person or by proxy at any
                  meeting of the shareholders of Zemex or by written resolution
                  of all of the shareholders of Zemex in accordance with the
                  written direction of Dundee in respect of any item of
                  business, resolution, matter, question or proposition
                  concerning Zemex that may come before a meeting of the
                  shareholders of Zemex or may require the authorization of all
                  of the shareholders of the Corporation by written resolution;
                  and

         (t)      Lister shall incur no personal or other liability under this 0
                  save and except for those which arise by reason of his acting
                  otherwise than in accordance with this 0.



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                                       -8-

RIGHT OF FIRST REFUSAL ON THE REMAINING LISTER SHARES.

28.      Lister hereby agrees, and Dundee hereby acknowledges that if at any
         time after the Closing Date Lister wishes to sell or transfer all or a
         portion of the Remaining Lister Shares then held by him whether
         pursuant to an offer received by Lister from a third party or
         otherwise, then he shall first offer to sell (the "OFFER") such shares
         to Dundee upon the same terms and conditions as the offer from such
         third party or otherwise.

29.      The Offer shall be sent by notice in writing to Dundee and shall be
         open for acceptance by Dundee for three (3) days (the "OFFER PERIOD")
         from the receipt of the Offer by Dundee.

30.      Dundee shall be obliged by notice in writing to Lister received within,
         but not after the expiration of, the Offer Period at its sole option to
         either:

         (u)      accept the Offer, or

         (v)      reject the Offer, in which case the Offer Period with respect
                  to the Remaining Lister Shares that are the subject of the
                  Offer shall expire on the date the Offer is rejected.

31.      If Dundee does not accept the Offer by notice in writing by the expiry
         of the Offer Period, then it shall be deemed to have rejected the Offer
         on such date.

32.      If Dundee shall have accepted the Offer, then Lister shall sell to
         Dundee, and Dundee shall purchase from Lister, the Remaining Lister
         Shares that are the subject of the Offer, all in accordance with the
         terms and conditions established with respect to the Offer.

33.      If, after having exhausted the above procedures, Dundee has rejected
         the Offer or if less than all of the Remaining Lister Shares that are
         the subject of the Offer will be purchased by Dundee, then Lister shall
         be free to sell all of the Remaining Lister Shares that are the subject
         of the Offer or those Remaining Lister Shares that are the subject of
         the Offer that Dundee has refused to purchase. For greater certainty,
         such Remaining Lister Shares shall no longer be subject to Section 10
         and this Section 11.

NOTICES.

         Any notice, direction or other communication to be given by Dundee or
by Lister under Sections 10 or 11 herein shall be in writing and given by
delivering it or sending it by facsimile or other similar form of recorded
communication addressed:



                                                                  EXECUTION COPY

                                       -9-

         (a)      to Lister at:

                  181 Forest Hill Road
                  Toronto, Ontario
                  M5P 2N3

                  Attention:              Richard L. Lister

                  Telephone:              (416) 485-4266

                  Facsimile:              (416) 485-4266 (call ahead)

         (b)      to Dundee at:

                  Scotia Plaza
                  Suite 5500
                  40 King Street West
                  Toronto, Ontario
                  M5H 4A9

                  Attention:              Jonathan Goodman

                  Telephone:              416-863-6990

                  Facsimile:              416-363-4536

Any such communication shall be deemed to have been validly and effectively
given if (i) personally delivered, on the date of such delivery if such date is
a business day and such delivery was made prior to 4:00 p.m. (Toronto time),
otherwise on the next business day, (ii) transmitted by facsimile or similar
means of recorded communication on the business day following the date of
transmission. Any party may change its address for service from time to time by
notice given in accordance with the foregoing and any subsequent notice shall be
sent to the party at its changed address.


EXPENSES.

         Except as otherwise expressly provided in this Agreement all costs and
expenses (including the fees and disbursements of legal counsel) incurred in
connection with this Agreement and the transactions contemplated therein shall
be paid by the party incurring such expenses.

SURVIVAL.

         Lister, Zemex and Dundee hereby agree that the covenants,
representations and warranties of each party contained in this Agreement and in
any certificates or documents delivered pursuant to or in connection with the
transactions herein provided for shall survive the closing of such transactions
and, notwithstanding



                                                                  EXECUTION COPY

                                      -10-

such closing, and regardless of any investigation by or on behalf of Lister,
Zemex or Dundee with respect thereto, shall continue in full force and effect
for the benefit of such party, as applicable, without limitation of time,
subject only to applicable limitation periods imposed by law, if any.


TIME OF THE ESSENCE.

         Time shall be of the essence of this Agreement.

ENUREMENT.

         This Agreement shall become effective when executed by Lister, Zemex
and Dundee and after that time shall be binding upon and enure to the benefit of
the parties, their respective heirs, executors, legal personal representatives,
successors and assigns.

WAIVER.

34.      No waiver of any of the provisions of this Agreement shall be deemed to
         constitute a waiver of any other provision (whether or not similar),
         nor shall such waiver be binding unless executed in writing by the
         party to be bound by the waiver.

35.      No failure on the part of Lister, Zemex or Dundee to exercise, and no
         delay in exercising any right under this Agreement shall operate as a
         waiver of such right; nor shall any single or partial exercise of any
         such right preclude any other or further exercise of such right or the
         exercise of any other right.

ENTIRE AGREEMENT.

         This Agreement constitutes the entire agreement between the parties
with respect to the subject matter hereof and supersedes all prior agreements,
understandings, negotiations and discussions, whether oral or written, of the
parties with respect to the subject matter hereof. There are no representations,
warranties, covenants, conditions or other agreements, express or implied,
collateral, statutory or otherwise, among the parties in connection with the
subject matter of this Agreement except as specifically set forth herein and no
party has relied or is relying on any other information, discussion or
understanding in entering into and completing the transactions contemplated in
this Agreement.



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                                      -11-

FURTHER ASSURANCES.

         Each of the parties covenants and agrees to do such things, to attend
such meetings and to execute such further documents and assurances as may be
deemed necessary or advisable from time to time in order to carry out the terms
and conditions of this Agreement in accordance with their true intent.


SEVERABILITY.

         If any provision of this Agreement shall be determined by an arbitrator
or any court of competent jurisdiction to be illegal, invalid or unenforceable,
that provision shall be severed from this Agreement and the remaining provisions
shall continue in full force and effect.

GOVERNING LAW.

         This Agreement shall be governed by and interpreted and enforced in
accordance with the laws of the Province of Ontario and the federal laws of
Canada applicable therein.


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                                                                  EXECUTION COPY

COUNTERPARTS.

         This Agreement may be executed in any number of counterparts (including
counterparts by facsimile) and all such counterparts taken together shall be
deemed to constitute one and the same instrument.

         IN WITNESS WHEREOF the parties have executed this Agreement.



                                            RICHARD L. LISTER


/s/ Nancy Ramalho                           /s/ Richard L. Lister
- -------------------------------------       ------------------------------------
Witness


                                             ZEMEX CORPORATION



                                             By: /s/ Jonathan Goodman
                                                --------------------------------
                                                Authorized Signing Officer



                                             THE DUNDEE BANK



                                             By: /s/ D.K. Charter
                                                --------------------------------
                                                Authorized Signing Officer