EXHIBIT 10 (yy)


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                                   ----------

                               TIREX AMERICA INC.

                           EUROPEAN MARKET DEVELOPMENT
                              CONSULTING AGREEMENT

                                   ----------

      Consulting Agreement,  executed this 29th day of May, 1997 to be effective
as of January 15, 1997 between Tirex America Inc., a Delaware  corporation  (the
"Corporation") with offices located at 3767 Thimens, Ville St. Laurent,  Quebec,
Canada H4R 1W4 and Alan Crossley,  Gran Via de Hortaleza 82A, 1*B, 28043 Madrid,
Spain (the "Consultant").

      Whereas,  the  Consultant  has  expertise  and  substantial  business  and
marketing experience and contacts in Spain,  Portugal, and other parts of Europe
as well as in India, which can be important to the Corporation.

      Whereas,  the  Corporation  wishes  to  assure  itself  of the  consulting
services of the Consultant for the period  provided in this  Agreement,  and the
Consultant is willing to provide such services to the  Corporation  for the said
period under the terms and conditions hereinafter provided.

      Now, Therefore,  Witnesseth, that for and in consideration of the premises
and of the mutual promises and covenants  herein  contained,  the parties hereto
agree as follows:

1.    Employment

      The Corporation  agrees to and does hereby engage the Consultant,  and the
Consultant  agrees to and does hereby accept  engagement by the  Corporation  as
European  Market  Development  Consultant  to the  Corporation  for the two-year
period  commencing  as of January 15, 1997 and ending on December  31, 1998 (the
"Engagement Period").

2.    Consulting Services

      The services to be rendered by the Consultant  shall consist of advice and
opinions to the Corporation concerning,  and the undertaking and effectuation of
activities  necessary to establish  and develop in Europe and in India,  markets
for the TCS-1  System and for the rubber  crumb  which will be  produced  by the
operation  of  the  TCS-1  System  and  the  immediate   preparation  of  market
development  studies for the Iberian Peninsular and India. All such services are
to be performed only upon direct  authorization  from the Corporation and may be
performed by the Consultant  directly or indirectly  through GAPCO, SI, a market
research firm controlled by the Consultant ("GAPCO").  The Consultant shall have
the sole discretion as to the form, manner,


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and  place in  which  the  said  consulting  services  shall  be  rendered.  The
Consultant  shall not, by this agreement,  be prevented or barred from rendering
services of the same or similar nature, as herein described,  or services of any
nature whatsoever, for or in behalf of persons, firms or corporations other than
the Corporation.

3.    Compensation

      For all  services to be rendered  hereunder by the  Consultant  during the
Engagement Period, the Consultant shall receive the following compensation:

      (a)   an annual  salary of $75,000  (Canadian),  commencing  as of July 1,
            1997;

      (b)   an  expense  allowance  for  the  entire  term  of  this  Consulting
            Agreement of up to $115,000 (Canadian);

      (c)   upon completion and delivery by GAPCO of a market  development study
            for the Iberian Peninsular, receipt of which is hereby acknowledged,
            $40,000  (Canadian),  which may be paid by the Company in cash or in
            unregistered  common  stock of the  Company,  at a value of $.17 per
            share, or a combination thereof.

      (d)   upon completion and delivery by GAPCO of a market  development study
            for the India Peninsular,  receipt of which is hereby  acknowledged,
            $40,000  (Canadian),  which may be paid by the Company in cash or in
            unregistered  common  stock of the  Company,  at a value of $.17 per
            share, or a combination thereof.

4.    Secrets

      The Consultant agrees that any trade secrets or any other like information
of value relating to the business and/or field of interest of the Corporation or
any of its affiliates,  or of any corporation or other legal entity in which the
Corporation  or any of its  affiliates  has an  ownership  interest of more than
twenty-five per cent (25%),  including but not limited to, information  relating
to inventions,  disclosures,  processes,  systems, methods,  formulae,  patents,
patent applications,  machinery, materials, research activities and plans, costs
of production,  contract forms,  prices,  volume of sales,  promotional methods,
list of names or classes of customers,  which he has heretofore  acquired during
his  engagement  by the  Corporation  or any of its  affiliates  or which he may
hereafter  acquire  during  the  Engagement  Period  and the  three-year  period
beginning  after  termination  of the  Engagement  Period  as the  result of any
disclosures  to him,  or in any  other  way,  shall be  regarded  as held by the
Consultant and his  personnel,  if any, in a fiduciary  capacity  solely for the
benefit of the  Corporation,  its  successors  or assigns,  and shall not at any
time,  either  during the term of this  Agreement or  thereafter,  be disclosed,
divulged,  furnished, or made accessible by the Consultant and his personnel, if
any, to anyone,  or be otherwise  used by them,  except in the regular course of
business  of the  Corporation  or its  affiliates.  Information  shall  for  the
purposes of this  Agreement be considered to be secret if not known by the trade
generally,  even though such  information may have been disclosed to one or more
third parties pursuant to distribution agreements,  joint venture agreements and
other agreements entered into by the Corporation or any of its affiliates.


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5.    Non-Competition

      During  the 2 years  following  the  termination  of this  Agreement,  the
Consultant will not provide consulting  services either as a consultant or as an
employee, either directly or otherwise to any business which is, or is preparing
or intending to be, in  competition  with the  Corporation or to any business if
the  provision  of such  consulting  services  would  constitute  or result in a
conflict of interest on the part of the  Consultant  with  respect to his duties
and obligations hereunder.

6.    Assignment

      6.1 This Agreement may be assigned by the  Corporation as part of the sale
of  substantially  all of its business;  provided,  however,  that the purchaser
shall expressly assume all obligations of the Corporation  under this Agreement.
Further,  this  Agreement  may be assigned by the  Corporation  to an affiliate,
provided that any such affiliate shall  expressly  assume all obligations of the
Corporation  under this  Agreement,  and provided  further that the  Corporation
shall then fully  guarantee the  performance of the Agreement by such affiliate.
the Consultant  agrees that if this Agreement is so assigned,  all the terms and
conditions of this Agreement shall obtain between such assignee and himself with
the same force and effect as if said  Agreement had been made with such assignee
in the first instance.

      6.2 This  Agreement is personal to the  Consultant and may not be assigned
by him.

7.    Entire Understanding

      This Agreement contains the entire  understanding  between the parties and
supersedes all prior and collateral  communications,  reports,  agreements,  and
understandings  between the parties.  No change,  modification,  alteration,  or
addition to any provision  hereof shall be binding  unless in writing and signed
by authorized  representatives  of both parties.  This Agreement  shall apply in
lieu  of  and  notwithstanding  any  specific  statement   associated  with  any
particular information or data exchanged, and the duties of the parties shall be
determined   exclusively   by   the   aforementioned   terms   and   conditions.
Notwithstanding the foregoing, the parties agree that certain provisions of this
Agreement  may be changed  or  amended  for the  purpose  of  accommodating  tax
considerations  of the parties without  affecting the basic terms and conditions
of this Agreement.

8.    Survival of Certain Agreements


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      The covenants and agreements set forth in Articles 4 and 5, hereof,  shall
survive the expiration of the Engagement Period and shall survive termination of
this Agreement and remain in full force and effect.

9.    Notices

      9.1 All  notices  required or  permitted  to be given  hereunder  shall be
delivered by hand, certified mail, or recognized overnight courier, in all cases
with written  proof of receipt  required,  addressed to the parties as set forth
below and shall be deemed  given upon  receipt as evidenced by written and dated
receipt of the receiving party.

      9.2 Any notice to the  Corporation  or to any assignee of the  Corporation
shall be addressed as follows:

                           Tirex America Inc.
                           3767 Thimens, Suite 207
                           Ville St. Laurent
                           Quebec, Canada H4R 1W4

      9.3 Any notice to the Consultant shall be addressed as follows:

                           Mr. Alan Crossley
                           Gran Via de Hortaleza 82A, 1oB
                           28043 Madrid, Spain

      9.4 Either  party may change  the  address to which  notice to it is to be
addressed, by notice as provided herein.

10.   Applicable Law

      This Agreement  shall be interpreted  and enforced in accordance  with the
laws of the State of Delaware.

11.   Interpretation

      Whenever possible,  each Article of this Agreement shall be interpreted in
such  manner as to be  effective  and valid  under  applicable  law,  but if any
Article is  unenforceable  or  invalid  under such law,  such  Article  shall be
ineffective only to the extent of such  unenforceability or invalidity,  and the
remainder of such Article and the balance of this Agreement  shall in such event
continue to be binding and in full force and effect.


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11.   Prior Agreements

      This  Agreement  supersedes  and  cancels  any and all  prior  agreements,
whether written or oral, between the parties.

      In Witness  Whereof,  the parties hereto have executed the above Agreement
as of the day and year first above written.

                                          Tirex America Inc.

                                          By /s/ Terence C. Byrne
                                             -----------------------------------
                                             Terence C. Byrne, President

                                             /s/ Alan Crossley
                                             -----------------------------------
                                             Alan Crossley


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