ESCROW AGREEMENT
                         (Performance Escrow Agreement)

            THIS AGREEMENT made effective this 7th day of May, 1997.

                             1077431 ONTARIO LIMITED
                             (herein called " 1077431")

                                                               OF THE FIRST PART

                                     - and -

                             MONTREAL TRUST COMPANY OF CANADA
                             (herein called the "Trustee")


                                                              OF THE SECOND PART

                                     - and -

                             RICHARD SHERMAN
                             (herein called "Sherman")

                                                               OF THE THIRD PART

     WHEREAS Alpha Ventures Inc.  ("Ventures") has made an offer to purchase all
of the shares of Alpha  Corporation  ("AC")  dated April 9, 1997 (the  "Offer"),
which Offer was duly accepted by all of the shareholders of AC;

     AND WHEREAS 1077431 is a shareholder of Ventures;

     AND  WHEREAS  1,426,082  common  shares of Ventures  owned by 1077431  (the
"1077431  Shares") are subject to a  performance  based Form C Escrow  Agreement
dated as of the date hereof  between  Ventures,  the  Trustee and certain  other
shareholders of Ventures (the "Escrow Agreement ');

     AND WHEREAS  Sherman owns all of the issued and  outstanding  securities of
1077431

     AND WHEREAS to comply with the  requirements of The Alberta Stock Exchange,
Sherman is desirous of  depositing  in escrow all of the issued and  outstanding
common  shares in the capital of 1077431 (the  "Escrowed  Shares")  which escrow
shall be based on the performance of Ventures;

     AND  WHEREAS the  Trustee  has agreed to  undertake  and perform its duties
according to the terms and conditions hereof;



     NOW THEREFORE this agreement  witnesses that in consideration of the sum of
one dollar ($ 1.00) paid by the parties to each other, receipt of this sum being
acknowledged by each of the parties to each other,  Sherman covenants and agrees
with  1077431 and with the  Trustee,  and 1077431 and the Trustee  covenant  and
agree each with the other and with Sherman jointly and severally as follows:

I    Where used in this  agreement  or in any  amendment of  supplement  hereto,
     unless the context  otherwise  requires,  the  following  words and phrases
     shall have the following ascribed to them below:

     (a)  "Cash Flow" means net income derived from the business of Ventures, as
          shown on the audited  financial  statements  or verified by  Ventures'
          auditors, adjusted for the following add backs:

                          (1) depreciation,
                          (2) depletion,
                          (3) deferred taxes,
                          (4) amortization of goodwill,
                          (5) amortization of research and development costs,

     (b)  "Related Party" means promoters,  officers,  directors, other insiders
          of Ventures and any associates or affiliates of the foregoing.

2.   Sherman  hereby places and deposits in escrow with the Trustee the Escrowed
     Shares which are represented by the certificates  described in Schedule "A"
     and the Trustee hereby acknowledges receipt of those certificates.  Sherman
     agrees  to  deposit  in  escrow  any  further   certificates   representing
     securities  in  1077431  which  he  may  receive  as a  stock  dividend  on
     securities  hereby escrowed,  and to deliver to the Trustee  immediately on
     receipt thereof the  certificates  for any such further  securities and any
     replacement  certificates  which may at any time be issued for any escrowed
     securities.

3.   The Parties  hereby agree that,  subject to the  provisions  of paragraph 6
     herein, the Escrowed Shares and the beneficial ownership of or any interest
     in them and the  certificate  representing  them (including any replacement
     securities  or  certificates)  shall not be sold,  assigned,  hypothecated,
     alienated, released from escrow, transferred within escrow, or otherwise in
     any manner  dealt with,  without the written  consent of The Alberta  Stock
     Exchange  (hereinafter  referred to as the "Exchange") given to the Trustee
     or except as may be  required  by  reason  of the  death or  bankruptcy  of
     Sherman or the bankruptcy of 1077431,  in which case the Trustee shall hold
     the said  certificates  subject to this agreement,  for whatever person, or
     company shall be legally entitled to become the registered owner thereof.

4.   Sherman  directs  the  Trustee  to  retain  the  Escrowed  Shares  and  the
     certificates   (including  any  replacement   securities  or  certificates)
     representing  them and not to do or cause  anything  to be done to  release
     them from  escrow or to allow any  transfer,  hypothecation  or  alienation
     thereof,  without the written consent of the Exchange.  The Trustee accepts
     the responsibilities




     placed on it by this  agreement  and agrees to perform  them in  accordance
     with  the  terms of this  Agreement  and the  written  consent,  orders  or
     directions of the Exchange.

5    Sherman  may apply to the  Exchange  for a consent  for a  transfer  within
     escrow and shall, before applying, give reasonable notice in writing of his
     intention to 1077431 and the Trustee.

6   (a)  The Exchange will consent to the release from escrow of one share for
         each $0.20 of Cash Flow.

    (b)  Any release from escrow under this paragraph 6 shall be made
         pursuant to a written application of behalf of 1077431 or
         Sherman, which application shall be accompanied by evidence of
         the Cash Flow received in a form satisfactory to the Exchange.
         Application for release may only be made once per year and may
         only relate to Cash Flow received in the preceding fiscal year
         or the fiscal years of Ventures since the last release from
         escrow pursuant to this agreement, whichever is greater.

     (c) Notwithstanding subparagraph (b) above, the maximum number of
         shares to be released from escrow in any year shall be
         one-third of the original number of shares held in escrow.

7.   A release from escrow of all or part of the Escrowed Shares shall terminate
     this agreement only in respect to those securities so released. For greater
     certainty this paragraph  does not apply to securities  transferred  within
     escrow.

8.   Sherman  shall,  if a dividend is declared  by 1077431  while the  Escrowed
     Shares or any of them  continue to be held in escrow under this  Agreement,
     renounce  and release any right to receive  payment of the  dividend on the
     shares then held in escrow.

9.   If  1077431  is wound up and any  securities  remain in escrow  under  this
     agreement  at  the  time  when a  distribution  of  assets  to  holders  of
     securities  is made by the  liquidator,  Sherman  shall assign his right to
     receive that part of the distribution which is attributable to the escrowed
     securities to the Trustee, for the benefit of, and in trust for the persons
     and companies who are then holders of free  securities in 1077431  rateably
     in proportion to their holdings.

10.  (a) In the event that any or all of the  business of Ventures has become of
         little value or no value,  Ventures  shall  declare the  occurrence of
         that event,  with full particulars  thereof,  to the Exchange by a
         resolution of its directors;

     (b)  Sherman  agrees with 1077431 and the Trustee that in the event of such
          diminution  of  value,  the  securities  held in  escrow  shall not be
          cancelled or released  from escrow,  in whole or in part,  except with
          the consent of the Exchange.

     (c)  The Exchange may, in its sole  discretion,  having regard to the value
          of the property as ultimately established and such other circumstances
          as it may consider relevant,


          determine  the number of  securities  to be  cancelled or released and
          shall  communicate  its  decision  in writing to the  Trustee.  If the
          Exchange  determines  that less than all the  securities  then held in
          escrow shall be cancelled or released shall be taken rateably from the
          escrowed  security holding of Sherman,  unless the Exchange  otherwise
          directs Sherman, with the consent of the Exchange,  otherwise agree in
          writing.

     (d)  On receipt by the Trustee of a determination to cancel,  Sherman shall
          tender the required number of escrowed securities to 1077431 by way of
          gift for cancellation  and, 1077431 shall thereupon take the necessary
          action,  by way of reduction of capital or otherwise,  to cancel them,
          and the  certificates  for these  securities shall be delivered up for
          cancellation.

     (e)  Sherman  undertakes  and  agrees  to vote and  cause  to be voted  his
          securities  in a manner  consistent  with the  terms,  conditions  and
          intent of this  agreement in relation to the aforesaid  giving back of
          securities for cancellation.

11.  Notwithstanding  paragraphs 6 and 10, any shares remaining in escrow on the
     fifth anniversary of the date of this agreement,  unless otherwise exempted
     in writing by the  Exchange,  shall be  cancelled  by the Trustee  within 6
     months of the said fifth anniversary.

12.  All voting rights attached to the escrowed securities shall at all times be
     exercised by Sherman.

13.  Sherman and 1077431  hereby  jointly and  severally  agree to and do hereby
     release and  indemnify  and save  harmless the Trustee from and against all
     claims, suits, demands, costs, damages and expenses which may be occasioned
     by reason of the Trustee's compliance in good faith with the terms hereof.

14.  1077431 hereby  acknowledges the terms and conditions of this Agreement and
     agrees to take all reasonable  steps to facilitate its  performance  and to
     pay the  Trustee's  proper  charges  for its  services  as  trustee of this
     escrow.

15.  If the  Trustee  should  wish to  resign,  it shall give at least 6 months'
     notice to 107743 1 which may, with the written consent of the Exchange,  by
     writing appoint another Trustee in its place and such appointment  shall be
     binding on Sherman,  and the new Trustee  shall  assume and be bound by the
     obligations of the Trustee hereunder.

16.  The  covenants  of Sherman  with  1077431 in this  agreement  are made with
     1077431  both in its own right and as trustee for the holders  from time to
     time  of free  securities  in  1077431,  and may be  enforced  not  only by
     10777431 but also by any holder of free securities.

17.  This  agreement  may be executed in several  parts of the same form and the
     parts as so executed shall together constitute one original agreement,  and
     the parts, if more than one, shall be read together and construed as if all
     the signing parties hereto had executed one copy of this agreement.


18.  Wherever the singular or masculine is used,  the same shall be construed to
     include the plural or feminine or neuter where the context so requires.

19.  This agreement  shall enure to the benefit of and be binding on the parties
     to this  agreement  and each of  their  heirs,  executors,  administrators,
     successors and assigns.

IN  WITNESS  WHEREOF  1077431  and the  Trustee  have  caused  their  respective
corporate  seals to be hereto  affixed  and  Sherman has hereto set his hand and
seal.

                                       1077431 ONTARIO LIMITED
                                       per: _________________________________

                                       per: _________________________________

                                       MONTREAL TRUST COMPANY OF CANADA

                                       per: _________________________________

                                       per: _________________________________


- -----------------                       ------------------
Witness                                 Richard A. Sherman




                                  SCHEDULE "A"

Name of Security Holder and                            Number of Securities   Certificate Numbers of
address                        Type of Securities      Escrowed               Escrowed Securities
                                                                     

Richard Sherman                 Common Shares             1,426,082                 C-6