WEISS PECK & GREER LLC
SC 13D/A, 1995-08-16
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13D


                   Under the Securities Exchange Act of 1934
                               (Amendment No. 4)*

                            Nu-West Industries, Inc.
                                (Name of Issuer)

                   Common Stock (par value $0.01 per share)
                         (Title of Class of Securities)

                                  67019H1000C2
                                 (CUSIP Number)

                    Robin B. Shanus, Deputy General Counsel
                          Weiss, Peck & Greer, L.L.C.
                               One New York Plaza
                               New York, NY 10004
                                 (212) 908-9539
          (Name, Address and Telephone Number of Person Authorized to
                      Receive Notices and Communications)

                                 August 9, 1995
            (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box |_|

Check the following box if a fee is being paid with the statement |_|. (A fee is
not required only if the reporting person:  (1) has a previous statement on file
reporting  beneficial  ownership  of more  than  five  percent  of the  class of
securities  described  in Item 1;  and (2) has  filed  no  amendment  subsequent
thereto reporting  beneficial  ownership of five percent or less of such class.)
(See Rule 13d-7.)

Note: Six copies of this statement, including all exhibits, should be filed with
the  Commission.  See Rule  13d-1(a) for other  parties to whom copies are to be
sent.

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.



The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).



<PAGE>
                                  SCHEDULE 13D


CUSIP No. 67019H10002                                        Page 2 of 27 Pages

   
   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


         Weiss, Peck & Greer, L.L.C.
   
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*            (a)  |_|

                                                                      (b)  |X|
   
   3      SEC USE ONLY
   
   4     SOURCE OF FUNDS*

         N/A
   
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED 
         PURSUANT TO ITEMS 2(d) or 2(e)                                |_|
   
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         State of Delaware

                     
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                -0-
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               3,368,568
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           -0-
     PERSON          
                    10     SHARED DISPOSITIVE POWER
      WITH
                          3,368,568

  11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         3,368,568

  12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES 
         CERTAIN SHARES*                                                 |_|

  13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         45.2%

  14     TYPE OF REPORTING PERSON*

         BD, IA, OO


<PAGE>


                                  SCHEDULE 13D


CUSIP No. 67019H10002                                        Page 3 of 27 Pages

   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


         Wesley W. Lang, Jr.
   
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*            (a)  |_|

                                                                      (b)  |X|
   3     SEC USE ONLY

   
   4     SOURCE OF FUNDS*

         PF
   
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                                |_|
   
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         U.S.A.

                     
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                1,166
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               4,396,282
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           1,166
     PERSON          
                    10     SHARED DISPOSITIVE POWER
      WITH
                           4,396,282

  11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         4,397,448

  12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES 
         CERTAIN SHARES*                                                 |_|

  13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         59.0%

  14     TYPE OF REPORTING PERSON*

         IN


<PAGE>

                                  SCHEDULE 13D


CUSIP No. 67019H10002                                        Page 4 of 27 Pages

   
   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


         Peter Pfister
   
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*            (a)  |_|

                                                                      (b)  |X|
   
   3     SEC USE ONLY
   
   4     SOURCE OF FUNDS*

         PF
   
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED 
         PURSUANT TO ITEMS 2(d) or 2(e)                                |_|
   
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         U.S.A.

                     
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                389
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               4,396,282
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           389
     PERSON         
                    10     SHARED DISPOSITIVE POWER
      WITH
                           4,396,282

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         4,396,671

12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES 
         CERTAIN SHARES*                                                 |_|


13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         59.0%

14       TYPE OF REPORTING PERSON*

         IN


<PAGE>
                                  SCHEDULE 13D


CUSIP No. 67019H10002                                        Page 5 of 27 Pages


   
   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


         WPG Corporate Development Associates II, L.P. Liquidating Trust,
         U/T/A dated December 31, 1993
   
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*            (a)  |_|

                                                                      (b)  |X|
   
   3     SEC USE ONLY
   
   4     SOURCE OF FUNDS*

         WC
   
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED 
         PURSUANT TO ITEMS 2(d) or 2(e)                                |_|
   
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         State of Delaware
    
                 
    NUMBER OF    7         SOLE VOTING POWER

     SHARES                -0-
                  
  BENEFICIALLY    8        SHARED VOTING POWER

    OWNED BY               2,488,005
      EACH         
                  9        SOLE DISPOSITIVE POWER
    REPORTING
                           -0-
     PERSON        
                  10       SHARED DISPOSITIVE POWER
      WITH
                           2,488,005

  11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         2,488,005

  12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) 
         EXCLUDES CERTAIN SHARES*                                      |_|

  13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         33.4%

  14     TYPE OF REPORTING PERSON*

         OO


<PAGE>

                                  SCHEDULE 13D


CUSIP No. 67019H10002                                        Page 6 of 27 Pages

   
   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


         Weiss , Peck & Greer Venture Associates, L.P. Liquidating Trust,
         U/T/A dated December 30, 1994
   
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*            (a)  |_|

                                                                      (b)  |X|
   
   3     SEC USE ONLY
   
   4     SOURCE OF FUNDS*

         WC
   
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED 
         PURSUANT TO ITEMS 2(d) or 2(e)                                |_|
   
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         State of Delaware

                     
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                -0-
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               880,563
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           -0-
     PERSON          
                    10     SHARED DISPOSITIVE POWER
      WITH
                           880,563

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         880,563

12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES 
         CERTAIN SHARES*                                                 |_|

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         11.8%

14       TYPE OF REPORTING PERSON*

         OO


<PAGE>

                                  SCHEDULE 13D


CUSIP No. 67019H10002                                        Page 7 of 27 Pages

   
   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


         WPG Corporate Development Associates III, L.P.
   
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a)  |_|

                                                                  (b)  |X|
   
   3     SEC USE ONLY
   
   4     SOURCE OF FUNDS*

         WC
   
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED 
         PURSUANT TO ITEMS 2(d) or 2(e)                                |_|
   
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         State of Delaware

                     
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                -0-
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               1,027,714
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           -0-
     PERSON          
                    10     SHARED DISPOSITIVE POWER
      WITH
                           1,027,714

  11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,027,714

  12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES 
         CERTAIN SHARES*                                                 |_|

  13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         11.8%

  14     TYPE OF REPORTING PERSON*

         PN

<PAGE>

                                  SCHEDULE 13D


CUSIP No. 67019H10002                                        Page 8 of 27 Pages

   
   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


         WPG CDA III, L.P.
   
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*            (a)  |_|

                                                                      (b)  |X|
   
   3     SEC USE ONLY
   
   4     SOURCE OF FUNDS*

         N/A
   
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED 
         PURSUANT TO ITEMS 2(d) or 2(e)                                |_|
   
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         State of Delaware

                     
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                -0-
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               1,027,714
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           -0-
     PERSON         
                    10     SHARED DISPOSITIVE POWER
      WITH
                           1,027,714

  11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,027,714

  12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES 
         CERTAIN SHARES*                                                 |_|

  13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         11.8%

  14     TYPE OF REPORTING PERSON*

         PN


<PAGE>

                                  SCHEDULE 13D


CUSIP No. 67019H10002                                       Page 9 of 27 Pages

   
   1     NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


         WPG Corporate Development Associates III (Overseas), Ltd.
   
   2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*            (a)  |_|

                                                                      (b)  |X|
   
   3     SEC USE ONLY
   
   4     SOURCE OF FUNDS*

         WC
   
   5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED 
         PURSUANT TO ITEMS 2(d) or 2(e)                                |_|
   
   6     CITIZENSHIP OR PLACE OF ORGANIZATION

         Cayman Islands

                     
    NUMBER OF        7     SOLE VOTING POWER

     SHARES                -0-
                     
  BENEFICIALLY       8     SHARED VOTING POWER

    OWNED BY               217,999
      EACH           
                     9     SOLE DISPOSITIVE POWER
    REPORTING
                           -0-
     PERSON          
                    10     SHARED DISPOSITIVE POWER
      WITH
                           217,999

  11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         217,999

  12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES 
         CERTAIN SHARES*                                                 |_|

  13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         2.9%

  14     TYPE OF REPORTING PERSON*

         CO


<PAGE>

                  Pursuant  to Rules  13d-1(f)(1)-(2)  and  13d-2 of  Regulation
13D-G of the General Rules and Regulations under the Securities  Exchange Act of
1934, as amended (the "Act"),  the undersigned  hereby file this Amendment No. 4
to the original  Schedule 13D dated  September  30, 1989 filed by Weiss,  Peck &
Greer on behalf of the reporting persons identified thereon.  This Amendment No.
4 is filed  on  behalf  of  Weiss,  Peck & Greer,  L.L.C.,  a  Delaware  limited
liability  company  ("WPG"),  Wesley  W.  Lang,  Jr.  ("Lang"),   Peter  Pfister
("Pfister"),  WPG Corporate  Development  Associates II, L.P. Liquidating Trust,
U/T/A dated December 31, 1993 ("CDAII Liquidating  Trust"),  Weiss, Peck & Greer
Venture  Associates,  L.P.  Liquidating  Trust,  U/T/A dated  December  30, 1994
("WPGVA Liquidating Trust"), WPG Corporate  Development  Associates III, L.P., a
Delaware limited partnership  ("CDAIII"),  WPG CDA III, L.P., a Delaware limited
partnership  ("WPG-CDA  III"),  and WPG  Corporate  Development  Associates  III
(Overseas),   Ltd.,  a  Cayman  Islands  corporation  ("CDAIII  Overseas").  The
foregoing  persons  are  sometimes  hereinafter  referred  to as the  "Reporting
Persons."

                  Unless otherwise  indicated herein, all capitalized terms used
in this Amendment No. 4 which are defined in the original Schedule 13D Statement
dated  September 30, 1989, as  heretofore  amended,  shall have the same meaning
herein as therein.

                  Unless otherwise  specified in the following items,  there are
no  material  changes  from the  information  reported in such  statement  dated
September  30, 1989,  as amended by Amendment  No. 1 thereto,  dated  January 9,
1990,  Amendment  No. 2 thereto,  dated  November 2, 1990,  and  Amendment No. 3
thereto, dated November 27, 1995.

Item 1.    Security and Issuer.

                  This Statement  relates to the voting common stock,  par value
$0.01 per share (the "Common Stock"),  of Nu-West  Industries,  Inc., a Delaware
corporation (the "Issuer").  The principal  executive  offices of the Issuer are
located at 8400 East Prentice Avenue, Englewood, Colorado 80111.

Item 2.  Identity and Background.

                  (a) Pursuant to Rules  13d-1(f)(1)-(2)  of Regulation 13D-G of
the General Rules and Regulations under the Securities  Exchange Act of 1934, as
amended 

                                       10

<PAGE>

(the "Act"),  the undersigned  hereby file this Schedule 13D Statement on behalf
of the Reporting  Persons.  The Reporting Persons are making this single,  joint
filing  because they may be deemed to constitute a "group" within the meaning of
Section  13(d)(3)  of the Act,  although  neither  the fact of this  filing  nor
anything  contained  herein shall be deemed to be a claim or an admission by the
Reporting  Persons that a group exists.  Mr. Lang and Mr. Pfister are members of
the Issuer's board of directors.

                  WPG

                  (b)-(c) WPG is a Delaware  limited  liability  company.  WPG's
principal  businesses  are  those  of  investment   management,   brokerage  and
investment banking.  The principal business address of WPG (which also serves as
its principal office) is One New York Plaza, New York, New York 10004.  Pursuant
to Instruction C to Schedule 13D of the Act, the following information regarding
the name,  business or residence address and the present principal occupation of
each managing member is set forth below:

Managing Members              Address                           Occupation

Stephen H. Weiss         One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Philip Greer             One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Melville Straus          One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Roger J. Weiss           One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Nelson Schaenen, Jr.     One New York Plaza                Managing Member, WPG
                         New York, NY  10004

                                       11

<PAGE>


Samuel Armacost          One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Annette Bianchi          One New York Plaza                Managing Member, WPG
                         New York, NY  10004

John Callaghan           One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Gill Cogan               One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Candice Eggers           One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Ellen Feeney             One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Janet A. Fiorenza        One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Margery Z. Flicker       One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Tony Giammalva           One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Ronald M. Hoffner        One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Steven Hutchinson        One New York Plaza                Managing Member, WPG
                         New York, NY  10004

James W. Kiley           20 North Wacker Drive             Managing Member, WPG
                         Chicago, IL  60606

                                       12

<PAGE>


A. Roy Knutsen           One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Alan D. Kohn             One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Wesley W. Lang, Jr.      One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Gary R. Lisk             One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Marvin B. Markowitz      One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Howard Mattsson          One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Kathleen A. McCarragher  One New York Plaza                Managing Member, WPG
                         New York, NY  10004

John Murabito            One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Jay C. Nadel             One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Joseph N. Pappo          One New York Plaza                Managing Member, WPG
                         New York, NY  10004

McGehee L. Porter        One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Bradford R. Peck         One New York Plaza                Managing Member, WPG
(beneficially owns       New York, NY  10004
389 shares of
Common Stock)

                                       13

<PAGE>


Peter Pfister            One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Steven Pomerantz         One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Stuart W. Porter         20 North Wacker Drive             Managing Member, WPG
                         Chicago, IL  60606

Francis H. Powers        One New York Plaza                Managing Member, WPG
                         New York, NY  10004

R. Scott Richter         One New York Plaza                Managing Member, WPG
                         New York, NY  10004

James Schainuck          One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Gary E. Scheier          One New York Plaza                Managing Member, WPG
                         New York, NY  10004

David J. Schilder        20 North Wacker Drive             Managing Member, WPG
                         Chicago, IL  60606

Arthur L. Schwarz        7 West 51st Street                Managing Member, WPG
                         New York, NY  10019

Daniel S. Vandivort      One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Robert Weiss             One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Ellen P. Welsh           One New York Plaza                Managing Member, WPG
                         New York, NY  10004

                                       14

<PAGE>


Hugh Zurkuhlen           One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Steven Lear              One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Kenneth Tarr             One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Paul Morris              One New York Plaza                Managing Member, WPG
                         New York, NY  10004

                  CDAII Liquidating Trust

                  (b)-(c) CDAII Liquidating Trust is a trust formed to liquidate
the assets of WPG  Corporate  Development  Associates  II, L.P.  ("CDAII").  The
principal business of CDAII was that of a private investment partnership.  CDAII
Liquidating  Trust's  principal  business  address  (which  also  serves  as its
principal  office) is One New York Plaza,  New York, New York 10004.  WPG is the
sole trustee of the trust.

                  WPGVA Liquidating Trust

                  (b)-(c) WPGVA Liquidating Trust is a trust formed to liquidate
the  assets of Weiss,  Peck & Greer  Venture  Associates,  L.P.  ("WPGVA").  The
principal business of WPGVA was that of a private investment partnership.  WPGVA
Liquidating Trust's principal

                                       15
<PAGE>

business  address  (which also serves as its  principal  office) is One New York
Plaza, New York, New York 10004. WPG is the sole trustee of the trust.

                  CDAIII

                  CDAIII  is  a  Delaware  limited  partnership.  The  principal
business  of  CDAIII  is  that of a  private  investment  partnership.  CDAIII's
principal  business  address (which also serves as its principal  office) is One
New York Plaza,  New York, New York 10004. The sole general partner of CDAIII is
WPG-CDA III.

                  WPG-CDA III

                  WPG-CDA III is a Delaware limited  partnership.  The principal
business  of  WPG-CDA  III is  serving  as the sole  general  partner of CDAIII.
WPG-CDA III's  principal  business  address  (which also serves as its principal
office) is One New York Plaza,  New York, New York 10004. Mr. Lang is a managing
general  partner of WPG-CDA III. WPG is a Class A limited partner of WPG-CDAIII.
Pursuant to Instruction C to Schedule 13D of the Act, the following  information
regarding  the general  partners of WPG-CDA  III and their  respective  business
addresses and present principal occupations is set forth below:

General Partners              Address                           Occupation

Philip Greer              One New York Plaza                Managing Member, WPG
                          New York, NY  10004

Wesley W. Lang            One New York Plaza                Managing Member, WPG
                          New York, NY  10004

Stephen Hutchinson        One New York Plaza                Managing Member, WPG
                          New York, NY  10004

                                       16

<PAGE>


Peter B. Pfister          One New York Plaza                Managing Member,WPG
                          New York, NY  10004               

Craig Whiting             One New York Plaza                General Partner,
                          New York, NY  10004               WPG-CDAIII



                  CDAIII Overseas

                  (b)-(c) CDAIII Overseas is a Cayman Islands  corporation.  The
principal business of CDAIII Overseas is that of a private  investment  company.
CDAIII Overseas'  principal business address (which also serves as its principal
office) is c/o W.S. Walker & Company,  Caledonian  House,  Grand Cayman,  Cayman
Islands,  British West Indies.  Pursuant to Instruction C to Schedule 13D of the
Act,  the  following  information  regarding  the names,  business or  residence
address and the present principal occupation of each director and officer is set
forth below:

Directors                    Address                           Occupation

Philip Greer             One New York Plaza                Managing Member, WPG
                         New York, NY  10004

Robert Rayne             33 Robert Adam Street             Executive Director 
                         London W1M 5AH                    of LMS Services
                         United Kingdom                    Limited PLC


                                       17

<PAGE>


Michael Carney           BankAmerica Trust & Banking       Vice President and 
                         Corporation (Cayman) Limited,     Manager of Trust
                         P.O. Box 1092, George Town        and Private Banking
                         Grand Cayman, Cayman Islands      of BankAmerica Cayman
                         British West Indies
                         

Robin Jarvis             BankAmerica Trust & Banking       Manager of Mutual
                         Corporation (Cayman) Limited,     Funds, BankAmerica
                         P.O. Box 1092, George Town        Cayman
                         Grand Cayman, Cayman Islands
                         British West Indies

Brent Thomas             BankAmerica Trust & Banking       Trust Officer of
                         Corporation (Cayman) Limited,     Mutual Funds,
                         P.O. Box 1092, George Town        BankAmerica, Cayman
                         Grand Cayman, Cayman Islands
                         British West Indies

   Officers                   Address                            Office

BankAmerica              Anchorage Centre Harbour               Secretary
Trust & Banking          George Town, Grand
Corporation              Cayman, Cayman
(Cayman) Limited         Islands
                         British West Indies

                  Mr. Lang

                  (b)-(c) Mr. Lang's business address is One New York Plaza, New
York, New York 10004, and his present principal occupation or employment at such
address is as a principal in WPG.

                  Mr. Pfister

                  (b)-(c) Mr. Pfister's  business address is One New York Plaza,
New York, New York 10004, and his present principal  occupation or employment at
such address is as a principal in WPG.

                  The following persons  identified in the original Schedule 13D
to which this Amendment No. 4 relates (or in previous amendments thereto) are no
longer part of the joint filing  group:  Philip  Greer,  E.  Theodore  Stolberg,
Weiss,  Peck & Greer CDA,  L.P.,  WPG CDA III  (Overseas),  L.P.,  WPG Corporate
Development  Associates  II, L.P., and Weiss,  Peck & Greer Venture  Associates,
L.P.

                  (d) To the  knowledge of the  Reporting  Persons,  none of the
entities or persons  identified in this Item 2 has,  during the last five years,
been convicted in a criminal proceeding (excluding traffic violations or similar
misdemeanors).

                  (e) To the  knowledge of the  Reporting  Persons,  none of the
entities or persons  identified  in this Item 2 has,  during the last five years
been a party to a civil  proceeding  of a  judicial  or  administrative  body of
competent jurisdiction and as a result of such proceeding 

                                       18

<PAGE>


was or is  subject  to a  judgment,  decree  or  final  order  enjoining  future
violations  of, or prohibiting  or mandating  activities  subject to, federal or
state securities laws or finding any violation with respect to such laws.

                  (f) Mr. Lang and Mr. Pfister are citizens of the United States
of America.


Item 3.  Source and Amount of Funds or Other Consideration.

                  Except for shares personally held by Messrs. Lang and Pfister,
the Common Stock held by the Reporting Persons was acquired with working capital
of CDAII,  WPGVA,  CDAIII,  and CDAIII  Overseas,  or upon  exercise of warrants
granted  in  connection  with  financings  of  the  Issuer.  As  a  result  of a
recapitalization  plan  consummated in October 1993 and the exercise of warrants
by the Reporting  Persons in connection  with such plan, the Reporting  Persons'
percentage ownership interest,  as a group,  increased to approximately 61.9% as
of the dated of this Amendment No. 4 to Schedule 13D.

Item 4.  Purpose of Transaction.

                  On August 9, 1995,  the Issuer  entered into an Agreement  and
Plan  of  Merger  (the  "Merger  Agreement")  among  the  Issuer,  Agrium,  Inc.
("Purchaser"),  a  Canadian  corporation,  and  Agrium  Acquisition  Corporation
("Acquisition"),  a wholly-owned subsidiary of the Purchaser,  pursuant to which
the Issuer  agreed to the merger of  Acquisition  with and into the Issuer.  The
Merger Agreement contemplates that Acquisition will commence a tender offer (the
"Tender Offer"),  subject to certain  conditions,  for all outstanding shares of
the Company.

                  Section 9.1 of the Merger  Agreement  provides that the Merger
Agreement is subject to  termination  on or prior to the filing of a certificate
of merger  (the  "Effective  Date"),  whether  before or after  approval  by the
stockholders:

                  (a) by mutual  consent of Purchaser and the Board of Directors
of the Issuer;
                  (b) by  Purchaser  or the Issuer if the Merger  shall not have
been  consummated on or before December 15, 1995,  which date may be extended by
mutual agreement of the Boards of Directors of the Issuer and Purchaser;

                  (c) by the  Issuer,  if,  prior  to the  Effective  Date,  the
Issuer,  its Board of Directors or its  stockholders  shall  receive a bona fide
written  proposal or offer from a third party (each an  "Acquisition  Proposal")
relating to:

                       (i) the  acquisition or purchase of all or  substantially
all of the assets of, or more than a 50% equity  interest  (including any shares
theretofore acquired) in the Issuer;

                                       19

<PAGE>


                       (ii)  a  merger,   consolidation   or  similar   business
combination with the Issuer;

                       (iii)  a  tender  or   exchange   offer  for  the  Issuer
conditioned on ownership of more than 50% of the  outstanding  shares  following
such tender or exchange offer;

and the Board of Directors of  the Issuer  determines  that it has a duty in the
proper  discharge of its  fiduciary  responsibilities  under  applicable  law to
consider such other proposal or offer,  and then such Board of Directors  either
(A)  accepts  such  proposal  or  offer,  (B)  recommends  to  the  stockholders
acceptance of such proposal or offer, or (C) in the case of a tender or exchange
offer,  takes no position with respect  thereto and all  conditions  (other than
terminating  the Merger  Agreement)  of such tender or exchange  offer have been
satisfied;

                  (d) by Purchaser upon a breach of any material representation,
warranty,  covenant  or  agreement  on the part of the  Issuer set forth in this
Agreement or if any  representation  or warranty of the Issuer shall have become
untrue and such breach or untruth shall have caused a material  adverse  effect;
or

                  (e)   by  the   Issuer   upon  a   breach   of  any   material
representation, warranty, covenant or agreement on the part of the Purchaser set
forth in this  Agreement or if any  representation  or warranty of the Purchaser
shall have become untrue and such breach or untruth shall have caused a material
adverse effect.

                  On August 9, 1995,  each of the Reporting  Persons  identified
below  granted an  irrevocable  proxy to  designated  employees of the Purchaser
relating  to  shares of Common  Stock.  The  irrevocable  proxies,  covering  an
aggregate   of   4,614,281   shares  of   Common   Stock,   entitle   the  named
attorneys-in-fact (i) to call a special meeting of stockholders of the Issuer to
consider  the  Merger,  and (ii) to vote  (or,  at their  discretion,  execute a
written  consent  with  respect  to) with or without  the other,  all the shares
covered  by the proxy (A) in favor of the  Merger  and  adoption  of the  Merger
Agreement,  and (B) against any  business  combination  proposal or other matter
that may interfere or be  inconsistent  with the Merger or the Merger  Agreement
(including,  without  limitation,  an  Acquisition  Proposal,  as defined in the
Merger

                                       20

<PAGE>


Agreement),  at any  meeting of  stockholders  of the Issuer (or consent in lieu
thereof) and any adjournment or adjournments thereof.

                  Each Reporting  Person  granting a proxy also agreed to tender
the shares covered by the proxy in the Tender Offer.

                  Each proxy  (including  the obligation to tender shares in the
Tender  Offer)  terminates  automatically  on the  earliest  to occur of (i) the
Effective Time, (ii) termination of the Merger Agreement pursuant to Section 9.1
thereof, or (ii) amendment of the Merger Agreement with respect to the price per
share to be received upon the merger or tender.

                  The  Reporting  Persons  granting  proxies  and the  number of
shares of Common Stock covered by such proxy are as follows:

                     Reporting Person                   Number of Shares

                   WPGVA Liquidating Trust                   880,563
                   CDAIII                                  1,027,714
                   CDAII Liquidating Trust                 2,488,005
                   CDAIII Overseas                           217,999

                  The Merger  Agreement  is annexed to this  Amendment  No. 4 as
Exhibit A; the proxies are annexed as Exhibit B.

                  The identified  Reporting Persons granted proxies with respect
to the  shares  owned by them to induce the  Purchaser  to enter into the Merger
Agreement. If the Merger Agreement is consummated, the Issuer will cease to be a
public company. Consequently, its securities will cease to be quoted and will be
eligible for  termination of  registration  pursuant to Section  12(g)(4) of the
Securities Exchange Act of 1934.


                                       21

<PAGE>


Item 5.  Interest in Securities of Issuer.

                  The following information is provided in response to Item 5 of
Schedule 13D and is based on a total of 7,453,174  shares of voting Common Stock
represented  by  the  Issuer  in  the  Merger  Agreement  to be outstanding.  An
additional  633,106 shares of non-voting common stock are outstanding based upon
representations of the Issuer in the Merger Agreement.

         (a)      CDAII Liquidating Trust

                  CDAII Liquidating Trust  beneficially owns 2,488,005 shares of
Common Stock, constituting approximately 33.4% of the Common Stock outstanding.

                  WPGVA Liquidating Trust

                  WPGVA  Liquidating  Trust  beneficially owns 880,563 shares of
Common Stock, constituting approximately 11.8% of the Common Stock outstanding.

                  CDAIII

                  CDAIII  beneficially  owns  1,027,714  shares of Common Stock,
constituting approximately 13.8% of the Common Stock outstanding.

                  WPG-CDA III

                  WPG-CDA  III as the sole  general  partner  of  CDAIII  may be
deemed,  pursuant to Rule 13d-3, to own beneficially  1,027,714 shares of Common
Stock, constituting approximately 13.8% of the Common Stock outstanding. WPG-CDA
III  disclaims  beneficial  ownership  of all such Common  Stock,  except to the
extent of WPG-CDA  III's  beneficial  interest,  as a partner of CDAIII,  in the
Common Stock held by CDAIII.

                  CDAIII Overseas

                  CDAIII  Overseas  beneficially  owns 217,999  shares of Common
Stock, constituting approximately 2.9% of Common Stock outstanding.



                                       22

<PAGE>

                  Mr. Lang

                  Mr. Lang owns of record  1,166  shares of Common Stock and has
sole voting and dispositive  power with respect to such shares. By reason of his
status as a principal of WPG and as a managing  partner of WPG-CDAIII,  Mr. Lang
may be deemed to be the beneficial  owner,  within the meaning of Rule 13d-3, of
the  4,396,282  shares of Common Stock held by CDAII  Liquidating  Trust,  WPGVA
Liquidating Trust, and CDAIII,  constituting  approximately  59.0% of the Common
Stock in the aggregate.  Mr. Lang disclaims  beneficial ownership of such Common
Stock,  except to the extent of Mr. Lang's indirect  beneficial interest in such
entities.

                  Mr. Pfister

                  Mr.  Pfister owns of record 389 shares of Common Stock and has
sole voting and dispositive  power with respect to such shares. By reason of his
status as a principal of WPG and as a general partner of WPG-CDAIII, Mr. Pfister
may be deemed to be the beneficial  owner,  within the meaning of Rule 13d-3, of
the  4,396,282  shares of Common Stock held by CDAII  Liquidating  Trust,  WPGVA
Liquidating Trust, and CDAIII, constituting approximately 59.0% of the Stock in


                                       23

<PAGE>

the aggregate.  Mr. Pfister disclaims beneficial ownership of such Common Stock,
except to the  extent of Mr.  Pfister's  indirect  beneficial  interest  in such
entities.

                  WPG

                  WPG is the sole trustee of CDAII  Liquidating  Trust and WPGVA
Liquidating Trust. As a result, WPG may also be deemed,  pursuant to Rule 13d-3,
to beneficially own 3,368,568 shares of Common Stock, constituting approximately
45.2%  of the  Common  Stock  outstanding.  However,  WPG  disclaims  beneficial
ownership  of the  3,368,568  shares of Common  Stock held by CDAII  Liquidating
Trust, WPGVA Liquidating Trust, CDAIII and CDAIII Overseas.

         (b)      No Material Change

         (c)  Except as set forth in Item 3 above,  during  the past  sixty (60)
days,  there  have  been  no  transactions  in the  Common  Stock  by any of the
Reporting  Persons,  nor, to the knowledge of the Reporting Persons by any other
person named in Item 2.

Item 6.    Contracts, Arrangements, Understandings or Relationships With Respect
           to Securities of the Issuer.

                  See Items 4 and 7.

Item 7.  Material to be filed as Exhibits.

                  Exhibit A         Agreement  and Plan of Merger  dated as of
                                    August 9, 1995 among the  Issuer,  Purchaser
                                    and Acquisition.

                  Exhibit B         Proxies dated August 9, 1995 executed 
                                    by the following  Reporting  Persons:  WPGVA
                                    Liquidating Trust, CDAIII, CDAII Liquidating
                                    Trust, and CDAIII Overseas.

                  Exhibit C         Agreement pursuant to Rule 13d-1(f)(1)(iii).


                                       24

<PAGE>


                  Exhibit D         Power of Attorney appointing Robin B. 
                                    Shanus  and/or  Peter B.  Pfister  to act on
                                    behalf of Wesley W. Lang,  Jr.  individually
                                    and on  behalf  of WPCDA  III,  L.P.  and on
                                    behalf   of   WPG   Corporate    Development
                                    Associates III, L.P.


                                       25

<PAGE>


                                   SIGNATURES



                  After reasonable  inquiry and to the best of our knowledge and
belief,  we certify that the  information  set forth in this  statement is true,
complete and correct.

                                                        Dated:  August 14, 1995



*
Wesley W. Lang, Jr.



s/Peter Pfister
Peter Pfister


WPG CORPORATE DEVELOPMENT ASSOCIATES II, L.P. LIQUIDATING TRUST

By:      WEISS, PECK & GREER, L.L.C.
         its sole trustee


         By:s/Philip Greer
            Philip Greer



WEISS, PECK & GREER VENTURE ASSOCIATES, L.P. LIQUIDATING TRUST

By:      WEISS, PECK & GREER, L.L.C.
         its sole trustee


         By:s/Philip Greer
            Philip Greer


                                       26

<PAGE>


WPG CORPORATE DEVELOPMENT ASSOCIATES III, L.P.

By:      WPG CDA III, L.P.
         its sole general partner


         By:*
              Wesley W. Lang, Jr.



WPG CDA III, L.P.


         By:*
              Wesley W. Lang, Jr.



WPG CORPORATE DEVELOPMENT ASSOCIATES III (OVERSEAS), LTD.


By:s/Robin Jarvis
   Robin Jarvis





WEISS, PECK & GREER, L.L.C.


By:s/Philip Greer
   Philip Greer


*By:s/Robin Shanus
    Robin B. Shanus
    Attorney-in-Fact

                                       27

                                   EXHIBIT A

                          AGREEMENT AND PLAN OF MERGER


                           dated as of August 9, 1995


                                  by and among


                                  AGRIUM INC.,

                         AGRIUM ACQUISITION CORPORATION

                          and NU-WEST INDUSTRIES, INC.



<PAGE>

                                                        
                               TABLE OF CONTENTS

                                                                          Page

         ARTICLE I    THE TENDER OFFER                                      1

             Section 1.1  The Tender Offer                                  1
             Section 1.2  Action by the Company                             2
             Section 1.3  Continuing Directors                              3

         ARTICLE II    THE MERGER                                           3


             Section 2.1  The Merger                                        3
             Section 2.2  Consummation of the Merger                        3

         ARTICLE III  CERTIFICATE OF INCORPORATION AND BY-LAWS OF THE
                      SURVIVING CORPORATION                                 4

             Section 3.1  Certificate of Incorporation                      4
             Section 3.2  By-Laws                                           4
             Section 3.3  Officers and Board of Directors                   4

         ARTICLE IV   CONVERSION OF SHARES                                  4

             Section 4.1  Conversion of Shares                              4
             Section 4.2  Payment for Shares                                5
             Section 4.3  Shares of Dissenting Stockholders                 5
             Section 4.4  Closing of the Company's Transfer Books           5
             Section 4.5  Status of Share Certificates                      5

         ARTICLE V    REPRESENTATIONS AND WARRANTIES OF PURCHASER AND
                      ACQUISITION                                           6

             Section 5.1  Organization                                      6
             Section 5.2  Authority Relative to this Agreement              6
             Section 5.3  No Conflicts; Required Filings and Consents       6
             Section 5.4  Information                                       7
             Section 5.5  Litigation                                        8
             Section 5.6  Financing                                         8
             Section 5.7  Ownership of Capital Stock                        8

         ARTICLE VI   REPRESENTATIONS AND WARRANTIES OF THE COMPANY         8

                                   -i-

<PAGE>
                                                                          Page

             Section 6.1  Organization and Qualification; Subsidiaries      8
             Section 6.2  Charter and By-Laws                               9
             Section 6.3  Capitalization                                    9
             Section 6.4  Authority                                        11
             Section 6.5  No Conflict; Required Filings and Consents       11
             Section 6.6  Permits; Compliance                              12
             Section 6.7  Reports; Financial Statements                    12
             Section 6.8  Absence of Certain Changes or Events             13
             Section 6.9  Absence of Litigation                            13
             Section 6.10  Employee Plans; Labor Matters                   14
             Section 6.11  Taxes                                           16
             Section 6.12  Environmental Matters                           17
             Section 6.13  Delaware Law                                    18
             Section 6.14  Inventory; Accounts Receivable                  19
             Section 6.15  Insurance                                       19
             Section 6.16  Properties                                      19
             Section 6.17  Certain Contracts and Restrictions              19
             Section 6.18  Information Supplied                            19
             Section 6.19  Opinion of Financial Advisor                    20
             Section 6.20  Futures Trading and Fixed Price Exposure        20
             Section 6.21  Intellectual Property                           20
             Section 6.22  Contributions, Etc.                             20
             Section 6.23  Easements                                       20
             Section 6.24  Information                                     21

         ARTICLE VII  COVENANTS                                            21

             Section 7.1  Conduct of Business by the Company Pending
                            the Merger                                     21
             Section 7.2  Stockholders' Meeting and Proxy Statement        24
             Section 7.3  Certain Filings and Consents                     24
             Section 7.4  Access                                           24
             Section 7.5  Expenses                                         25
             Section 7.6  Employee Stock Options; Warrant                  25
             Section 7.7  Indemnification and Insurance                    25
             Section 7.8  Employee Benefits                                26
             Section 7.9  Maintenance of Financing                         26
             Section 7.10  Resignation of Directors                        27
             Section 7.11  Board of Directors                              27

         ARTICLE VIII CONDITIONS                                           27

             Section 8.1  Conditions to Each Party's Obligation to
                            Effect the Merger                              27

                                      -ii-

<PAGE>
             Section 8.2  Conditions to Obligations of Purchaser and
                            Acquisition to Effect the Merger               27
             Section 8.3  Conditions to Obligation of the Company to 
                            Effect the Merger                              28

         ARTICLE IX   TERMINATION, AMENDMENT AND WAIVER                    29

             Section 9.1  Termination                                      29
             Section 9.2  Break-Up  Fee;  Effect of  Termination           30
             Section 9.3  Amendment                                        30
             Section 9.4  Waiver                                           30

         ARTICLE X    GENERAL PROVISIONS                                   30

             Section 10.1  Notice of Breach                                30
             Section 10.2  Cooperation                                     31
             Section 10.3  Non-Survival of Representations and Warranties  31
             Section 10.4  Brokers                                         31
             Section 10.5  Entire Agreement                                31
             Section 10.6  Applicable Law                                  31
             Section 10.7  Interpretation; Headings                        31
             Section 10.8  Assignment                                      31
             Section 10.9  Separability                                    32
             Section 10.10  Publicity                                      32
             Section 10.11  Notices                                        32
             Section 10.12  Counterparts                                   33
             Section 10.13  No Third Party Beneficiaries                   33
             Section 10.14  Schedules                                      33

                                     -iii-

<PAGE>

                          AGREEMENT AND PLAN OF MERGER


            AGREEMENT  AND PLAN OF  MERGER  dated as of  August  9,  1995  (this
"Agreement")  by and among Agrium Inc.,  a Canadian  corporation  ("Purchaser"),
Agrium  Acquisition   Corporation,   a  Delaware  corporation  and  wholly-owned
subsidiary  of  Purchaser  ("Acquisition"),  and  Nu-West  Industries,  Inc.,  a
Delaware   corporation  (the  "Company").   (Acquisition  and  the  Company  are
hereinafter collectively referred to as the "Constituent Corporations.")

            WHEREAS,  Purchaser  and the Boards of Directors of the  Constituent
Corporations  (a) desire to enter into this  Agreement and (b) have approved the
merger of  Acquisition  with and into the Company (the  "Merger"),  all upon the
terms and subject to the conditions set forth herein.

            NOW, THEREFORE, the parties hereto agree as follows:


                                   ARTICLE I
                                  TENDER OFFER

            Section 1.1 The Tender Offer.

                   (a) As long as none of the  events  set  forth in  Exhibit  A
hereto shall have  occurred or be existing,  Acquisition  shall,  and  Purchaser
shall cause Acquisition to, commence as promptly as practicable, but in no event
later than five business days after the date hereof,  a tender offer (as amended
or extended from time to time, the "Tender Offer") subject to the conditions set
forth in Exhibit A hereto,  for all  outstanding  shares of Voting Common Stock,
par value $.01, and Nonvoting  Common Stock, par value $.01  (collectively,  the
"Shares") of the Company,  which Tender Offer is  conditioned  upon a sufficient
number of Shares being properly  tendered and not withdrawn,  which,  when added
together with any Shares owned by Purchaser and any of its subsidiaries or which
Purchaser and Acquisition have the right to acquire,  will equal at least 60% of
the outstanding  Shares on a fully diluted basis. The per Share price to be paid
in the Tender  Offer,  which shall be paid net to the sellers in cash,  shall be
$10.50.  Purchaser  agrees,  subject to the terms and  conditions  of the Tender
Offer,  to pay for all Shares  tendered that it is obligated to purchase as soon
as legally permissible.

                   (b)  Without  the  prior  written  consent  of  the  Company,
Acquisition  shall not decrease  the Merger  Price (as defined in Section  4.1),
decrease the number of Shares being sought in the Tender Offer,  change the form
of consideration  payable in the Tender Offer, add additional  conditions to the
Tender Offer or make any other material change in the terms or conditions to the
Tender Offer.

<PAGE>

                   (c) On the date the Tender Offer is commenced,  Purchaser and
Acquisition shall file with the Securities and Exchange Commission (the "SEC") a
tender offer  statement on Schedule  14D-1  (together  with all  amendments  and
supplements thereto, the "Schedule 14D-1") with respect to the Tender Offer. The
Schedule  14D-1 shall contain  (included as an exhibit) or shall  incorporate by
reference  the Offer to Purchase (or portions  thereof) and forms of the related
Letter of Transmittal and summary  advertisement  and shall comply as to form in
all material  respects with the  requirements of the Securities  Exchange Act of
1934, as amended (the "Exchange Act"), and the rules and regulations promulgated
thereunder (the "Rules and Regulations"). If at any time prior to the expiration
or termination of the Tender Offer any event occurs which is required by the Act
and the Rules and  Regulations  to be  described in an amendment to the Schedule
14D-1  or any  supplement  thereto,  Purchaser  and  Acquisition  will  file and
disseminate,  as  required,  an amendment or  supplement  which  complies in all
material  respects with the Act and the Rules and  Regulations.  The Company and
its counsel shall be given an  opportunity  to review the Schedule 14D-1 and any
amendment or supplement thereto prior to its being filed with the SEC. Purchaser
and  Acquisition  agree to provide the Company and its counsel  with any written
comments  (and to inform the  Company  and its  counsel of the tenor of any oral
comments)  Purchaser and  Acquisition  or their counsel may receive from the SEC
with respect to the Offer Documents (as defined in Section 5.4) is made promptly
after the receipt of such comments.

            Section 1.2 Action by the  Company.  The Company  hereby  represents
that the Board of Directors of the Company,  in connection  with its approval of
this  Agreement,  by resolution has (a) approved the Tender Offer and the Merger
and (b)  resolved to recommend  acceptance  of the Tender Offer and approval and
adoption of the Merger and this  Agreement  by the holders of the Shares if such
approval and adoption is required by the General Corporation Law of the State of
Delaware (the "GCL"). On the date the Schedule 14D-1 is filed with the SEC, the
Company  shall  file  with the SEC a  Solicitation/Recommendation  Statement  on
Schedule  14D-9  (together  with all amendments  and  supplements  thereto,  the
"Schedule  14D-9") and shall mail the Schedule 14D-9 to the  stockholders of the
Company.  The Schedule  14D-9 shall  comply as to form in all material  respects
with the  requirements  of the Act and the  Rules  and  Regulations.  Purchaser,
Acquisition  and their  counsel  shall be given the  opportunity  to review  the
Schedule 14D-9 and any amendment or supplement  thereto prior to its filing with
the SEC.  The Company  agrees to provide  Purchaser  and  Acquisition  and their
counsel with any written  comments  (and to inform them of the tenor of any oral
comments)  that the Company or its counsel  receive from the SEC with respect to
the Schedule 14D-9  promptly after the receipt of such comments.  If at any time
prior to the  expiration  or  termination  of the Tender  Offer any event occurs
which is required by  applicable  law to be  described  in an  amendment  to the
Schedule 14D-9 or any supplement thereto, the Company will file and disseminate,
as required,  an amendment or supplement which complies in all material respects
with the Act,  the  Rules and  Regulations  and any other  applicable  laws.  In
connection  with the Tender  Offer,  the Company will or will cause its transfer
agent to  furnish  Purchaser  with a list of  stockholders  and  mailing  labels
containing  the names and addresses of all record  holders of the Shares held in
stock  depositories,  each  as of a  recent  date.  The  Company  shall  furnish
Purchaser  with  any  additional  information,  including  an  updated  list  of
stockholders, mailing labels and lists of security 

                                      -2-

<PAGE>

positions,   and  any  assistance  as  Purchaser  may   reasonably   request  in
communicating  the  Tender  Offer to the record  and  beneficial  holders of the
Shares.

            Section 1.3 Continuing Directors.  After the time that Acquisition's
designees  constitute  at least a  majority  of the  Board of  Directors  of the
Company and until the Effective  Date (as defined in Section 2.2), any amendment
or termination of this Agreement, extension for the performance or waiver of the
obligations or other acts of Purchaser or Acquisition  (except  pursuant to this
Agreement)  or  waiver  of the  Company's  rights  hereunder,  which  amendment,
termination,  extension  or waiver  would  adversely  affect  the  stockholders,
optionholders or employees of the Company,  shall also require the approval of a
majority  (or such higher  percentage  as is  required  under the By-laws of the
Company) of the then serving directors, if any, who are directors as of the date
hereof (the "Continuing Directors"). If the number of Continuing Directors prior
to the  Effective  Date is  reduced  below  two for any  reason,  the  remaining
Continuing  Directors  or  Continuing  Director  shall be entitled to  designate
persons to fill such vacancies who shall be deemed Continuing  Directors for all
purposes of this Agreement.

                                   ARTICLE II
                                   THE MERGER

            Section 2.1 The Merger. Upon the terms and subject to the conditions
hereof,  on the Effective  Date,  Acquisition  shall be merged with and into the
Company,  which shall be the surviving corporation (the Company in such capacity
being hereinafter sometimes called the "Surviving Corporation").  From and after
the Effective Date, the status, rights and liabilities of, and the effect of the
Merger on, each of the Constituent  Corporations in the Merger and the Surviving
Corporation  shall be as provided  in Section  259 of the GCL. At any time,  and
from  time to time  after  the  Effective  Date,  the last  acting  officers  of
Acquisition, or the corresponding officers of the Surviving Corporation, may, in
the name of Acquisition, execute and deliver all such proper deeds, assignments,
and other  instruments  and take or cause to be taken all such  further or other
action as the Surviving  Corporation may deem necessary or desirable in order to
vest, perfect or confirm in the Surviving Corporation title to and possession of
all  of  the  Company's  property,  rights,   privileges,   powers,  franchises,
immunities  and  interests  and  otherwise  to carry  out the  purposes  of this
Agreement and the Merger.

            Section 2.2 Consummation of the Merger.  As soon as practicable (but
in any event  within  five  business  days)  after the  receipt of any  required
approval  of the  Company's  stockholders  and Board of  Directors  (or, if such
approval is not required,  all other corporate action required as a precondition
to effect the Merger), and subject to the conditions  hereinafter set forth, the
parties  hereto  shall cause the Merger to be  consummated  by the  approval and
filing with the  Secretary of the State of Delaware of a  certificate  of merger
(or a certified copy of this Agreement) in such form as required by and executed
in accordance  with the relevant  provisions of applicable law (the time of such
filing being the "Effective Date").

                                      -3-

<PAGE>

                                  ARTICLE III
                    CERTIFICATE OF INCORPORATION AND BY-LAWS
                          OF THE SURVIVING CORPORATION

            Section  3.1  Certificate  of  Incorporation.   The  Certificate  of
Incorporation  of the  Company  in effect  on the  Effective  Date  shall be the
Certificate of  Incorporation  of the Surviving  Corporation,  until  thereafter
amended as provided by law.

            Section  3.2  By-Laws.  The  By-Laws of the Company in effect on the
Effective  Date  shall  be the  By-Laws  of  the  Surviving  Corporation,  until
thereafter   amended  as  provided  by  law  and  the  Surviving   Corporation's
Certificate of Incorporation.

            Section  3.3  Officers  and Board of  Directors.  The  directors  of
Acquisition  on the  Effective  Date shall become the directors of the Surviving
Corporation  until their  respective  successors are duly elected and qualified.
The officers of the Company on the Effective Date shall continue as the officers
of the Surviving  Corporation,  to serve in accordance  with the By-Laws thereof
until their respective successors are duly elected and qualified.


                                   ARTICLE IV
                              CONVERSION OF SHARES

            Section 4.1  Conversion  of Shares.  As of the  Effective  Date,  by
virtue  of the  Merger  and  without  any  action  on  the  part  of  Purchaser,
Acquisition, the Company or the holders of any securities of the Company:

                 (a) All  Shares  which  are held by the  Company  as  treasury
shares,  all authorized  and unissued  Shares and any Shares owned by Purchaser,
Acquisition  or any other direct or indirect  subsidiary of Purchaser,  shall be
canceled.

                  (b) Each other  outstanding  Share  (other than Shares held by
Dissenting Stockholders (as defined in Section 4.3)) shall be converted into the
right to receive (U.S.)$10.50 net in cash or such higher amount per Share as may
be paid to any  holder of Shares  pursuant  to the  Tender  Offer  (the  "Merger
Price").

                 (c)  Each  issued and  outstanding  share of  capital  stock of
Acquisition  shall  be  converted  into  one  validly  issued,  fully  paid  and
non-assessable  share of Voting Common Stock,  par value $.01 per share,  of the
Surviving Corporation.

                 (d)  Except as  provided  in  Section  7.6 and as set forth in
Schedule  4.1,  all notes and other debt or equity  instruments  of the  Company
which are  outstanding  at the Effective  Date shall  continue to be outstanding
subsequent to the Effective Date as debt or equity  instruments of the Surviving
Corporation, subject to their respective terms and provisions.

                                      -4-

<PAGE>

            Section 4.2 Payment for Shares.  Purchaser  shall  authorize  one or
more persons to act as paying agent in  connection  with the Merger (the "Paying
Agent").  Upon or as soon as  practicable  after the Effective  Date,  Purchaser
shall make  available  and each  former  holder of Shares  shall be  entitled to
receive  pursuant to Section  4.1(b),  upon surrender to the Paying Agent of the
certificate  or  certificates,  which  immediately  prior to the Effective  Date
represented such outstanding  Shares, for cancellation,  the aggregate amount of
cash into which those Shares shall have been  converted in the Merger.  Until so
surrendered,  each  certificate,  which  immediately prior to the Effective Date
represented  outstanding  Shares,  shall represent  solely the right to receive,
upon surrender,  the aggregate amount of cash into which the Shares  represented
thereby shall have been  converted.  No interest  shall accrue or be paid on the
cash payable upon the surrender of the  certificate or  certificates.  Purchaser
shall pay on the Effective  Date the amounts due in respect of the stock options
referred to in Section 7.6.

            Section  4.3  Shares  of  Dissenting  Stockholders.  Notwithstanding
anything in this Agreement to the contrary, any issued and outstanding shares of
capital stock of the Company held by a stockholder who has not voted in favor of
nor consented to the Merger and who complies with all the  provisions of the GCL
concerning  the right of holders  of such  stock to dissent  from the Merger and
require  appraisal of their shares (a  "Dissenting  Stockholder"),  shall not be
converted as described in Section 4.1 but shall become,  at the Effective  Date,
by virtue of the Merger and  without any  further  action,  the right to receive
such consideration as may be determined to be due to such Dissenting Stockholder
pursuant to the GCL;  provided,  however,  that Shares  outstanding  immediately
prior to the  Effective  Date and held by a  Dissenting  Stockholder  who shall,
after the Effective Date, withdraw his demand for appraisal or lose his right of
appraisal,  in either case pursuant to the GCL,  shall be deemed to be converted
as of the  Effective  Date,  into the right to  receive  the Merger  Price.  The
Company  shall give  Purchaser  (a) prompt  notice of any  written  demands  for
appraisal of shares of capital stock of the Company  received by the Company and
(b) the opportunity to direct all  negotiations  and proceedings with respect to
any such demands.  The Company shall not,  without the prior written  consent of
Purchaser,  voluntarily  make any payment with  respect to, or settle,  offer to
settle or otherwise negotiate, any such demands.

            Section  4.4  Closing  of the  Company's  Transfer  Books.  Upon the
Effective  Date,  the stock transfer books of the Company shall be closed and no
transfer of Shares (other than shares of Voting Common Stock, par value $.01 per
share,  into which the capital stock of Acquisition is to be converted  pursuant
to the Merger) shall thereafter be made.

            Section  4.5  Status  of  Share  Certificates.  From and  after  the
Effective  Date,  the holders of  certificates  evidencing  ownership  of Shares
outstanding  immediately  prior to the  Effective  Date shall  cease to have any
rights with respect to such Shares except as otherwise provided for herein or by
applicable law.

                                      -5-

<PAGE>

                                   ARTICLE V
          REPRESENTATIONS AND WARRANTIES OF PURCHASER AND ACQUISITION

            Purchaser  and  Acquisition  jointly  and  severally  represent  and
warrant to the Company as follows:

            Section 5.1 Organization. Purchaser is a corporation duly organized,
validly  existing  and in good  standing  under the laws of  Canada  and has the
requisite corporate power to carry on its business as it is now being conducted.
Acquisition  is a  corporation  duly  organized,  validly  existing  and in good
standing  under  the  laws  of the  State  of  Delaware  and  is a  wholly-owned
subsidiary of Purchaser.

            Section 5.2  Authority  Relative to this  Agreement.  Purchaser  and
Acquisition have the requisite  corporate power and authority to make the Tender
Offer,  execute  and  deliver  this  Agreement,  to  perform  their  obligations
hereunder and to consummate the transactions  contemplated hereby. The execution
and delivery of this Agreement by Purchaser and Acquisition and the consummation
by Purchaser and Acquisition of the transactions  contemplated  hereby have been
duly  authorized  by all  necessary  corporate  and,  to the  extent  necessary,
stockholder  action of Purchaser and  Acquisition and no other acts or corporate
proceedings on the part of Purchaser or  Acquisition  are necessary to authorize
the Tender Offer, the Merger or this Agreement or to consummate the transactions
contemplated  hereby.  This  Agreement  has been duly  executed and delivered by
Purchaser and Acquisition and is a valid and binding obligation of Purchaser and
Acquisition, enforceable against them in accordance with its terms.

            Section 5.3 No Conflicts; Required Filings and Consents.

                   (a) The execution and delivery of this Agreement by Purchaser
and Acquisition does not, and the consummation of the transactions  contemplated
hereby will not (i)  conflict  with or violate  the  charter or By-Laws,  or the
equivalent  organizational  documents,  in each case as amended or restated,  of
Purchaser or any of its  subsidiaries,  (ii) in any material  respect,  conflict
with or violate any federal,  state,  foreign or local law, statute,  ordinance,
rule, regulation, order, judgment or decree (collectively, "Laws") applicable to
Purchaser  or  any of its  subsidiaries  or by  which  any of  their  respective
properties  is bound or subject  or (iii)  result in any  material  breach of or
constitute a material  default (or an event that with notice or lapse of time or
both would  become a material  default)  under,  or give to others any rights of
termination,  amendment,  acceleration  or  cancellation  of, or require payment
under,  or  result  in the  creation  of a  lien  or  encumbrance  on any of the
properties  or assets of Purchaser or any of its  subsidiaries  pursuant to, any
note, bond, mortgage,  indenture,  contract,  agreement, lease, license, permit,
franchise or other  instrument or  obligation  to which  Purchaser or any of its
subsidiaries is a party or by or to which  Purchaser or any of its  subsidiaries
or any of their respective  properties is bound or subject,  except for any such
conflicts,  violations,  breaches,  defaults,  events,  rights  of  termination,
amendment,  acceleration  or  cancellation,  payment  obligations  or  liens  or
encumbrances  described  in  clauses  (ii)  or  (iii)  that  would  not,  in the
aggregate,  prevent  the  

                                      -6-

<PAGE>

Purchaser  and  Acquisition  from  performing,  in any material  respect,  their
respective  obligations  under this  Agreement (a  "Purchaser  Material  Adverse
Effect").

                   (b) The execution and delivery of this Agreement by Purchaser
and  Acquisition  does not, and  consummation of the  transactions  contemplated
hereby will not,  require either Purchaser or Acquisition to obtain any consent,
license,  permit,  approval,  waiver,  authorization or order of, or to make any
filing  with or  notification  to, any  governmental  or  regulatory  authority,
domestic  or foreign  (collectively,  "Governmental  Entities"),  except (i) for
applicable requirements,  if any, of the Securities Act of 1933, as amended (the
"Securities  Act"),  the Exchange Act, state  securities or blue sky laws ("Blue
Sky Laws"),  and the  Hart-Scott-Rodino  Antitrust  Improvements Act of 1976, as
amended  (the  "Hart-Scott-Rodino  Act"),  and the  filing  and  recordation  of
appropriate  merger documents as required by the GCL, and (ii) where the failure
to obtain such consents, licenses, permits, approvals,  waivers,  authorizations
or  orders,  or to  make  such  filings  or  notifications,  would  not,  either
individually  or in the  aggregate,  constitute  a  Purchaser  Material  Adverse
Effect.

            Section 5.4  Information.  (a) The  documents  pursuant to which the
Tender  Offer is made,  including a Schedule  14D-1,  an Offer to Purchase and a
related Letter of Transmittal and any amendments thereof or supplements  thereto
(the "Offer  Documents"),  will not at the  respective  times such documents are
filed with the SEC,  contain any untrue  statement of a material fact or omit to
state any  material  fact (other than  information  with  respect to the Company
supplied  by the  Company,  with  respect  to which no  representation  is made)
required  to be stated  therein  or  necessary  in order to make the  statements
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.  None of the  information to be supplied by Purchaser or Acquisition
for  inclusion  in a proxy  statement  in  connection  with the  meeting  of the
Company's stockholders, if required, described in Section 7.2 hereof (the "Proxy
Statement") or in an information statement mailed to the Company's  stockholders
(the "Information  Statement") or any amendments thereof or supplements thereto,
will, at the time of the meeting of  stockholders  to be held in connection with
the  Merger or the  mailing to  stockholders,  as the case may be,  contain  any
untrue statement of a material fact or omit to state any material fact necessary
in order to make the statements  therein,  in light of the  circumstances  under
which they were made, not misleading.

                   (b) Since their  inception,  Purchaser  and its  subsidiaries
have filed all forms,  reports,  statements and other  documents  required to be
filed with applicable Canadian and United States securities authorities,  except
where the failure to file such  documents  would not have a  Purchaser  Material
Adverse Effect (all such forms,  reports,  statements and other  documents being
referred to herein,  collectively,  as the "Purchaser  Reports").  The Purchaser
Reports,  including all Purchaser Reports filed after the date of this Agreement
and prior to the  Effective  Date,  (i) were or will be prepared in all material
respects in accordance with the  requirements of applicable Law and (ii) did not
at the time they were filed, or will not at the time they are filed, contain any
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary in order to make the statements therein, in light
of the  circumstances  under which they were made, not misleading,  except where
any such  statement  or  

                                      -7-

<PAGE>

omission would not have a Purchaser  Material  Adverse  Effect.  Notwithstanding
this Section  5.4(b),  Purchaser shall not be deemed to represent or warrant the
preparation or accuracy of any Purchaser  Report,  statement,  document or other
information  included  in  the  Purchaser  Reports  that  were  provided  to the
Purchaser for inclusion therein by a third party.

            Section 5.5 Litigation. There is no claim, action, suit, litigation,
proceeding,  arbitration or, to the knowledge of Purchaser, any investigation of
any  kind  at  law  or in  equity  (including  actions  or  proceedings  seeking
injunctive  relief),  pending  or, to the  knowledge  of  Purchaser,  threatened
against  Purchaser or any of its  subsidiaries  or any  properties  or rights of
Purchaser  or  any of its  subsidiaries  (except  for  claims,  actions,  suits,
litigation,   proceedings,   arbitrations  or  investigations  which  would  not
reasonably be expected to have a Purchaser Material Adverse Effect), and neither
Purchaser nor any of its  subsidiaries  is subject to any  continuing  order of,
consent decree,  settlement  agreement or other similar written  agreement with,
any Governmental  Entity, or any judgment,  order, writ,  injunction,  decree or
award of any Governmental Entity or arbitrator,  including,  without limitation,
cease and desist or other  orders,  except for  matters  which  would not have a
Purchaser Material Adverse Effect.

            Section  5.6  Financing.   Purchaser  and  Acquisition   have  funds
available to them  sufficient to  consummate  the Tender Offer and the Merger on
the terms contemplated hereby.

            Section 5.7 Ownership of Capital Stock. As of the date hereof,  each
of Purchaser,  Acquisition and their respective  affiliates is not an interested
stockholder of the Company (as defined in Section 203 of the GCL).

                                   ARTICLE VI
                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY

            The Company  represents and warrants to Purchaser and Acquisition as
follows:

            Section 6.1 Organization and  Qualification;  Subsidiaries.  Each of
the Company and its subsidiaries (as defined in Section 10.7) is duly organized,
validly  existing and in good standing under the laws of the jurisdiction of its
incorporation or organization,  has all requisite corporate or partnership power
and  authority  to own,  lease and  operate its  properties  and to carry on its
business as it is now being conducted and is duly qualified and in good standing
to do  business  in each  jurisdiction  in  which  the  nature  of the  business
conducted  by it or the  ownership  or  leasing  of its  properties  makes  such
qualification  necessary,  other than where the failure to be so duly  qualified
and in good standing would not have a Company Material Adverse Effect.  The term
"Company  Material  Adverse  Effect"  as used in this  Agreement  shall mean any
change or effect that,  individually  or when taken together with all other such
changes or effects,  would be  materially  adverse to the  financial  condition,
results of operations or fair market value of the Company and its  subsidiaries,
taken as a whole. Schedule 6.1 of the disclosure schedule delivered to Purchaser
by the Company on the date  hereof  (the  "Company  Disclosure  Schedule")  sets
forth,  as of the date of this  Agreement,  a true and complete  list of all the
Company's  subsidiaries and investments in business  entities  together with (A)
the  jurisdiction  of  

                                      -8-

<PAGE>

incorporation  or  organization  of each  subsidiary  and the percentage of each
subsidiary's  outstanding  capital stock or other equity  interests owned by the
Company or another  subsidiary of the Company,  and (B) an indication of whether
each such  subsidiary is a  "Significant  Subsidiary" as defined in Rule 1-02 of
Regulation S-X of the SEC. Neither the Company nor any of its subsidiaries  owns
or has owned  since its  inception  (other than  Nu-South  Industries,  Inc.,  a
Delaware  corporation,  the Conda Partnership,  an Idaho general partnership and
Nu-Gulf  Industries,  Inc., a Delaware  corporation),  an equity interest in any
other  corporation,  partnership or joint venture  arrangement or other business
entity that is or was material to the financial condition, results of operations
or fair market value of the Company and its subsidiaries, taken as a whole.

            Section  6.2  Charter  and  By-Laws.   The  Company  has  heretofore
furnished  to  Purchaser  complete  and  correct  copies of the  charter and the
By-Laws or the equivalent  organizational  documents, in each case as amended or
restated,  of the Company and each of its subsidiaries.  Neither the Company nor
any of its  subsidiaries is in violation of any of the provisions of its charter
or  any  material  provision  of  its  By-Laws  (or  equivalent   organizational
documents).

            Section 6.3 Capitalization.

            (a)  The  authorized  capital  stock  of  the  Company  consists  of
14,666,667  shares of Voting  Common Stock,  par value $.01 per share,  of which
7,453,174  shares are  issued and  outstanding;  2,000,000  shares of  Nonvoting
Common Stock,  par value $.01 per share,  of which 633,106 shares are issued and
outstanding;  290,000  shares of Class A  Preferred  Stock,  par value  $100 per
share,  of which  290,000  shares are issued and  outstanding;  20,000 shares of
Class B  Preferred  Stock,  par value  $100 per  share,  of which 344 shares are
issued and outstanding;  and 500,000 shares of Serial Preferred Stock, par value
$1.00 per share, none of which is issued and outstanding. Except as described in
this Section 6.3 or in Schedule 6.3(a) of the Company Disclosure Schedule, as of
the date of this  Agreement,  no  shares of  capital  stock of the  Company  are
reserved for any purpose. Each of the outstanding shares of capital stock of, or
other  equity  interests  in, each of the Company and its  subsidiaries  is duly
authorized,  validly issued and, in the case of shares of capital  stock,  fully
paid and  nonassessable,  and has not been issued in  violation  of (nor are the
authorized shares of capital stock of any of such corporate entities subject to)
any preemptive or similar rights created by statute,  the charter or By-Laws (or
the  equivalent   organizational  documents)  of  the  Company  or  any  of  its
subsidiaries,  or any agreement to which the Company or any of its  subsidiaries
is a party or bound, and such outstanding shares or other equity interests owned
by the  Company or a  subsidiary  of the Company are owned free and clear of all
security  interests,  liens,  claims,  pledges,  agreements,  limitations on the
Company's or such subsidiaries' voting rights,  charges or other encumbrances of
any nature  whatsoever,  except as set forth in the Second  Amended and Restated
Agreement of Limited Partnership of NuTec Mineral & Chemical Company, a Colorado
limited  partnership,  dated as of  January  1,  1994,  and as  provided  in the
documents evidencing the Company's credit facility with Harris Trust and Savings
Bank (the "Harris Loan").

                                      -9-

<PAGE>

            (b) There are no existing options,  warrants, calls,  subscriptions,
convertible   securities  or  other  securities,   agreements,   commitments  or
obligations  which would  require  the  Company to issue or sell  Shares  except
pursuant  to (a) the 1988  Employee  Stock  Option Plan and the  Company's  1994
Employee Stock  Incentive Plan (  collectively,  the "Stock Option Plans") under
which,  as of the close of  business  on the date  hereof,  497,721  Shares were
issuable  and reserved for issuance  pursuant to  outstanding  options,  (b) the
Company's  Nonemployee Director Stock Option Plan (the "Nonemployee Plan") under
which,  as of the  close of  business  on the date  hereof,  4,167  Shares  were
issuable  and reserved for issuance  pursuant to  outstanding  options,  (c) the
warrant issued September 18, 1989 by the Company to GE Capital  Corporation (the
"GE  Warrant")  under  which,  as of the close of business  on the date  hereof,
111,541  Shares were  issuable and reserved for  issuance,  and (d) the warrants
issued November 2, 1993 by the Company  originally to Indosuez CM II, Inc. under
which,  as of the close of  business  on the date  hereof,  677,626  Shares were
issuable  and  reserved  for  issuance  (together  with  the  GE  Warrant,   the
"Warrants").  Except as set forth in Section  6.3 or in  Schedule  6.3(b) to the
Company Disclosure Schedule, there are no obligations,  contingent or otherwise,
of the Company or any of its subsidiaries (i) to repurchase, redeem or otherwise
acquire any shares of the capital stock of the Company,  or the capital stock or
other  equity  interests  of any  subsidiary  of the Company or (ii) (other than
advances to subsidiaries in the ordinary course of business) to provide material
funds to, or make any  material  investment  in (in the form of a loan,  capital
contribution  or  otherwise),  or  provide  any  guarantee  with  respect to the
obligations  of, any  subsidiary of the Company or any other  person.  Except as
described in Schedule  6.3(b) to the Company  Disclosure  Schedule,  neither the
Company nor any of its  subsidiaries  (x) directly or indirectly  owns,  (y) has
agreed to purchase or otherwise  acquire or (z) holds any  interest  convertible
into or exchangeable or exercisable  for, 5% or more of the capital stock of any
corporation,  partnership, joint venture or other business association or entity
(other than the  subsidiaries  of the  Company set forth in Schedule  6.1 of the
Company  Disclosure  Schedule).  Except as set forth in  Schedule  6.3(b) of the
Company  Disclosure  Schedule  and except for any  agreements,  arrangements  or
commitments   between  the  Company  and  its   subsidiaries   or  between  such
subsidiaries,  there  are no  agreements,  arrangements  or  commitments  of any
character  (contingent  or otherwise)  pursuant to which any person is or may be
entitled to receive any payment based on the revenues or earnings, or calculated
in accordance therewith, of the Company or any of its subsidiaries. There are no
voting  trusts,  proxies  or other  agreements  or  understandings  to which the
Company or any of its  subsidiaries is a party or by which the Company or any of
its  subsidiaries  is bound with  respect to the voting of any shares of capital
stock of the Company or any of its subsidiaries.

            (c) The Company has  delivered  to  Purchaser  complete  and correct
copies  of the Stock  Option  Plans  and the  Nonemployee  Plan and each form of
option issued thereunder and the Warrants, including all amendments thereto, and
the Company has delivered a complete and correct list of all outstanding  awards
under the Stock Option Plans and the Nonemployee  Plan,  setting forth as of the
date  hereof (i) the number and type of awards  outstanding,  (ii) the  exercise
price of each outstanding option, (iii) the number of options  exercisable,  and
(iv) assuming no amendment or waiver of the terms thereof, the number of options
which will become exercisable, and the number of shares of restricted stock with
respect to which the  restrictions  will lapse,  on account of the Tender Offer,
the Merger or any other transaction contemplated hereby.

                                      -10-

<PAGE>

            Section 6.4 Authority. The Company has all requisite corporate power
and authority to execute and deliver this Agreement,  to perform its obligations
hereunder and to consummate the transactions contemplated hereby (subject to the
approval of the Merger, this Agreement and the transactions  contemplated hereby
by the affirmative  vote of the holders of a majority of the outstanding  shares
of Voting Common Stock of the Company ("Stockholder  Approval")).  The Company's
Board of Directors  has  unanimously  recommended  approval and adoption of this
Agreement by the Company's  stockholders entitled to vote on the Merger. Subject
to  Stockholder  Approval,  the execution and delivery of this  Agreement by the
Company and the  consummation  by the Company of the  transactions  contemplated
hereby have been duly authorized by all necessary  corporate action and no other
corporate proceedings on the part of the Company are necessary to authorize this
Agreement or to consummate the transactions  contemplated hereby. This Agreement
has been duly  executed and  delivered by the Company and is a valid and binding
obligation of the Company, enforceable against it in accordance with its terms.

            Section 6.5 No Conflict; Required Filings and Consents.

                   (a) The  execution  and  delivery  of this  Agreement  by the
Company does not, and the consummation of the transactions  contemplated  hereby
will not (i) conflict with or violate the charter or By-Laws,  or the equivalent
organizational documents, in each case as amended or restated, of the Company or
any of its subsidiaries,  (ii) in any material respect, conflict with or violate
any Laws applicable to the Company or any of its subsidiaries or by which any of
their respective  properties is bound or subject or (iii) except as described in
Schedule  6.5 to the  Company  Disclosure  Schedule,  result in any breach of or
constitute  a default  (or an event  that  with  notice or lapse of time or both
would  become a default)  under,  or give to others  any rights of  termination,
amendment,  acceleration or cancellation of, or require payment under, or result
in the creation of a lien or  encumbrance  on any of the properties or assets of
the Company or any of its subsidiaries  pursuant to, any note,  bond,  mortgage,
indenture,  contract,  agreement,  lease,  license,  permit,  franchise or other
instrument or obligation  to which the Company or any of its  subsidiaries  is a
party or by or to which the Company or any of its  subsidiaries  or any of their
respective  properties  is  bound or  subject,  except  for any such  conflicts,
violations,  breaches,  defaults,  events,  rights  of  termination,  amendment,
acceleration  or  cancellation,  payment  obligations  or liens or  encumbrances
described  in  clauses  (ii) or (iii)  that  would not have a  Company  Material
Adverse Effect.

                   (b) The  execution  and  delivery  of this  Agreement  by the
Company does not, and consummation of the transactions  contemplated hereby will
not,  require  the Company to obtain any  consent,  license,  permit,  approval,
waiver, authorization or order of, or to make any filing with or notification to
any Governmental Entities,  except (i) for applicable  requirements,  if any, of
the Securities Act, the Exchange Act, state securities or Blue Sky Laws, and the
Hart-Scott-Rodino  Act, and the filing and  recordation  of  appropriate  merger
documents  as  required  by the GCL and (ii) where the  failure  to obtain  such
consents, licenses, permits, approvals, waivers, authorizations or orders, or to
make such filings or  notifications,  would not,  

                                      -11-

<PAGE>

either individually or in the aggregate, prevent the Company from performing, in
any material respect,  its obligations under this Agreement and would not have a
Company Material Adverse Effect.

            Section  6.6  Permits;  Compliance.  Each  of the  Company  and  its
subsidiaries  is  in  possession  of  all  franchises,  grants,  authorizations,
licenses, permits, easements,  variances,  exemptions,  consents,  certificates,
approvals and orders (other than any thereof  covered by Section 6.12) necessary
to own,  lease and operate its  properties and to carry on its business as it is
now being  conducted  (collectively,  the  "Company  Permits"),  and there is no
action, proceeding or investigation pending or, to the knowledge of the Company,
threatened  regarding  suspension or cancellation of any of the Company Permits,
except where the failure to possess,  or the suspension or cancellation of, such
Company Permits, or such action,  proceeding or investigation,  would not have a
Company Material Adverse Effect. Neither the Company nor any of its subsidiaries
is in conflict with, or in default or violation of (a) any Law applicable to the
Company  or any of its  subsidiaries  or by or to which  any of  their  material
respective  properties  is bound or subject or (b) any of the  Company  Permits,
except for any such  conflicts,  defaults or  violations  which would not have a
Company Material Adverse Effect.  During the period  commencing on June 30, 1991
and ending on the date hereof,  neither the Company nor any of its  subsidiaries
has received from any Governmental  Entity any written  notification,  asserting
that the Company was in possible  default or  violation  of any Laws,  except as
described in Schedule  6.6 to the Company  Disclosure  Schedule,  and except for
defaults or violations that would not have a Company Material Adverse Effect.

            Section 6.7 Reports; Financial Statements.

                   (a) Since June 30,  1991,  the Company  and its  subsidiaries
have filed all forms,  reports,  statements and other  documents  required to be
filed with (A) the SEC including,  without limitation, (1) all Annual Reports on
Form 10-K,  (2) all  Quarterly  Reports on Form 10-Q,  (3) all proxy  statements
relating  to meetings  of  stockholders  (whether  annual or  special),  (4) all
Current Reports on Form 8-K and (5) all other reports,  schedules,  registration
statements  or other  documents  (collectively  referred to as the  "Company SEC
Reports") and (B) any applicable state securities authorities,  except where the
failure to file such documents would not have a Company  Material Adverse Effect
(all such forms,  reports,  statements  and other  documents  being  referred to
herein, collectively,  as the "Company Reports"). The Company Reports, including
all  Company  Reports  filed after the date of this  Agreement  and prior to the
Effective  Date,  (i)  were or will be  prepared  in all  material  respects  in
accordance with the  requirements of applicable Law (including,  with respect to
the Company SEC Reports,  the  Securities  Act and the Exchange Act, as the case
may be, and the rules and  regulations of the SEC thereunder  applicable to such
Company SEC Reports)  and (ii) did not at the time they were filed,  or will not
at the time they are filed,  contain any untrue  statement of a material fact or
omit to state a material  fact  required to be stated  therein or  necessary  in
order to make the statements  therein, in light of the circumstances under which
they were made, not misleading. Notwithstanding this Section 6.7(a), the Company
shall not be deemed to represent or warrant the  preparation  or accuracy of any
form, report,  statement,  document or other information 

                                      -12-

<PAGE>

included in the Company  Reports that were provided to the Company for inclusion
therein by a third party.

                   (b) Each of the consolidated financial statements (including,
in each case,  any related notes  thereto)  contained in the Company SEC Reports
filed since June 30, 1991, (i) have been or will be prepared in accordance  with
the  published  rules and  regulations  of the SEC and U.S.  generally  accepted
accounting  principles  ("GAAP")  applied on a consistent  basis  throughout the
periods  involved (except (A) to the extent required by changes in U.S. GAAP and
(B) with  respect to the  Company  SEC  Reports  filed prior to the date of this
Agreement,  as may be indicated in the notes thereto) and (ii) fairly present or
will fairly present the consolidated  financial  position of the Company and its
subsidiaries as of the respective dates thereof and the consolidated  results of
operations  and cash  flows  for the  periods  indicated  (including  reasonable
estimates  of  normal  and  recurring  year-end  adjustments),  except  that any
unaudited  interim  financial  statements  were or will be subject to normal and
recurring year-end adjustments.

            Section  6.8  Absence  of  Certain  Changes  or  Events.  Except  as
disclosed in the Company SEC Reports  filed prior to the date of this  Agreement
or as  contemplated  by this  Agreement  or as set forth in Schedule  6.8 of the
Company  Disclosure   Schedule,   since  June  30,  1994  the  Company  and  its
subsidiaries  have conducted  their  respective  businesses only in the ordinary
course and there has not been:  (i) any damage,  destruction or loss (whether or
not covered by  insurance)  with  respect to any assets of the Company or any of
its subsidiaries  which would have a Company  Material Adverse Effect;  (ii) any
material change by the Company or its subsidiaries in their accounting  methods,
principles  or  practices;  (iii) except for  dividends  by a subsidiary  to the
Company or another subsidiary, any declaration,  setting aside or payment of any
dividends or distributions  in respect of shares of the Company's  capital stock
or the shares of stock of, or other equity interests in, any subsidiary,  or any
redemption,  purchase  or  other  acquisition  by  the  Company  or  any  of its
subsidiaries of any of the Company's  securities or any of the securities of any
subsidiary;  (iv) except in the ordinary  course of business and consistent with
past  practice,  any increase in the benefits  under,  or the  establishment  or
amendment of, any bonus, insurance,  severance, deferred compensation,  pension,
retirement, profit sharing, stock purchase or other employee Plan (as defined in
Section 6.10) or any increase in the  compensation  payable or to become payable
to directors, officers or employees of the Company or its subsidiaries,  (v) any
grant of stock  options  other than  grants  prior to March 31,  1995;  (vi) any
revaluation  by the Company or any of its  subsidiaries  of any of their assets,
including  the writing down of the value of inventory or the writing down or off
of notes or accounts receivable,  other than in the ordinary course of business;
(vii) any entry by the Company or any of its subsidiaries into any commitment or
transaction  material  to the  Company  and its  subsidiaries,  taken as a whole
(other than this Agreement and the  transactions  contemplated  hereby);  (viii)
except pursuant to the Harris Loan, any material  increase in  indebtedness  for
borrowed money; or (ix) a Company  Material  Adverse Effect other than a Company
Material  Adverse  Effect  that is caused by changes in the market  price of raw
materials, feedstocks or finished goods.

            Section  6.9  Absence  of  Litigation.  Except as  disclosed  in the
Company SEC Reports filed prior to the date of this Agreement or as set forth in
Schedule  6.9 to the Company  

                                      -13-

<PAGE>

Disclosure Schedule,  there is no claim, action, suit,  litigation,  proceeding,
arbitration or, to the knowledge of the Company,  investigation  of any kind, at
law or in equity (including actions or proceedings  seeking injunctive  relief),
pending or, to the knowledge of the Company,  threatened  against the Company or
any of its subsidiaries or any properties or rights of the Company or any of its
subsidiaries  (except  for  claims,  actions,  suits,  litigation,  proceedings,
arbitrations or investigations  which would not reasonably be expected to have a
Company  Material  Adverse  Effect),  and  neither  the  Company  nor any of its
subsidiaries is subject to any continuing  order of, consent decree,  settlement
agreement or other similar written  agreement with any Governmental  Entity,  or
any judgment, order, writ, injunction,  decree or award of any Government Entity
or arbitrator,  including, without limitation, cease and desist or other orders,
except for matters which would not have a Company Material Adverse Effect.

            Section 6.10 Employee Plans; Labor Matters.

                   (a) Schedule  6.10 of the Company  Disclosure  Schedule  sets
forth,  and the Company has made  available to Purchaser true and correct copies
of,  (i)  all  employment  agreements  with  officers  of  the  Company  or  its
subsidiaries and all increases in their compensation and benefits since December
31,  1994;  (ii)  all  agreements  with   consultants  of  the  Company  or  its
subsidiaries  obligating  the  Company or any  subsidiary  to make  annual  cash
payments in an amount exceeding $50,000;  (iii) all  non-competition  agreements
with the Company or a subsidiary  executed by officers of the Company;  and (iv)
all material plans,  programs,  agreements and other arrangements of the Company
or its subsidiaries with or relating to its employees.

                   (b)  Except  for the  plans  and  arrangements  set  forth on
Schedule  6.10 to the  Company  Disclosure  Schedule  (the  "Scheduled  Plans"),
neither the Company nor any member of the Controlled  Group now  maintains,  has
ever  maintained or  contributed  to, or has any plans or  commitments  for, any
employee  Plans (as such  term is  defined  in the  Employee  Retirement  Income
Security Act of 1974, as amended  ("ERISA")  ss. 3(3)) or any other  retirement,
pension,  stock option,  stock  appreciation  right,  profit sharing,  incentive
compensation,  deferred compensation,  savings,  thrift, vacation pay, severance
pay,  or  other  employee   compensation  or  Plan,   agreement,   practice,  or
arrangement,  whether  written  or  unwritten,  whether or not  legally  binding
(collectively,  the "Plans"). For purposes of this Agreement, "Controlled Group"
means a  controlled  or  affiliated  group  within the  meaning of the  Internal
Revenue Code of 1986, as amended ("Code") ss. 414(b),  (c), (m), or (o) of which
the Company is a member. The Company has made available to Purchaser correct and
complete copies of all Scheduled Plans (including a detailed written description
of any Scheduled Plan that is unwritten,  including a description of eligibility
criteria, participation,  vesting, benefits, funding arrangements and assets and
any  other  provisions  relating  to the  Company)  and,  with  respect  to each
Scheduled Plan, a copy of each of the following:  (i) the most recent  favorable
determination  letter,  (ii) materials submitted to the Internal Revenue Service
in support of a pending  determination  letter  request,  (iii) the most  recent
letter issued by the Internal  Revenue Service  recognizing tax exemption,  (iv)
each insurance contract, trust agreement, or other funding vehicle, (v) the most
recently  filed Forms 5500 plus all  schedules  and  attachments,  and (vi) each
summary  plan   description  or  other  general   

                                      -14-

<PAGE>

explanation or communication distributed or otherwise provided to employees with
respect to each Scheduled Plan that describes the terms of the Scheduled Plan.

                   (c) Each  Scheduled Plan has at all times been in compliance,
in  form  and in  operation,  in  all  material  respects  with  all  applicable
requirements of law and regulations,  including  without  limitation ERISA. Each
Scheduled  Plan that is intended to be a qualified plan has received a favorable
determination  letter from the Internal  Revenue  Service;  nothing has occurred
since the date of the most  recent  favorable  determination  letter  that would
cause the loss of the Scheduled  Plan's  qualification;  and each such Scheduled
Plan has at all  times  been in  compliance,  in form and in  operation,  in all
material respects with the applicable requirement of the Code and the applicable
Treasury Regulations.

                   (d) Neither  the  Company nor any party in interest  (as such
term is defined in ERISA ss. 3(14)) nor any disqualified person (as such term is
defined in Code ss. 4975) has engaged in any prohibited  transaction  within the
meaning  of ERISA ss. 406 or Code ss.  4975 that  would have a Company  Material
Adverse Effect.

                   (e) All  contributions  to  Scheduled  Plans for all  periods
ending prior to the Effective Date (including  periods from the first day of the
current plan year to the Effective  Date) will be made prior to or accrued as of
the Effective Date by the Company in accordance with past practice.

                   (f) All  insurance  premiums  with respect to each  Scheduled
Plan have been paid in full or  accrued,  subject  only to normal  retrospective
adjustments in the ordinary course for policy years or other  applicable  policy
periods ending on or before the Effective Date.

                   (g)  Neither  the  Company  nor any member of the  Controlled
Group has any  liability  for  failure to comply  with ERISA or the Code for any
action or failure to act in connection with the  administration or investment of
any  Scheduled  Plan,  except  where  such  liability  would  not have a Company
Material Adverse Effect.

                   (h)  Neither  the  Company  nor any member of the  Controlled
Group has ever  maintained,  contributed  to, or been obligated to contribute to
any  plan  that  is  subject  to  Title  IV of  ERISA  or  the  minimum  funding
requirements  of Code  ss.  412.  Neither  the  Company  nor any  member  of the
Controlled  Group has ever  contributed  to or been obligated to contribute to a
multiemployer plan (as such term is defined in ERISA ss. 3(37)).

                   (i) With respect to each Scheduled  Plan and Plan,  there are
no  material  actions,  suits,  grievances,  arbitrations  or  other  manner  of
litigation or material  claims,  with respect to any Scheduled  Plan (except for
routine claims for benefits made in the ordinary  course of plan  administration
for which plan administrative procedures have not been exhausted) pending or, to
the  Company's  knowledge,  threatened  against or with respect to any Scheduled
Plan or Plan,  any plan  sponsor,  or any  fiduciary (as such term is defined in
ERISA ss. 3(21)) of 

                                      -15-

<PAGE>

such  Scheduled Plan or Plan,  other than actions,  suits,  grievances,  claims,
arbitrations  or other  manner  of  litigation  that  would  not have a  Company
Material Adverse Effect.

                   (j)  Except  as set  forth in  Schedule  6.10 to the  Company
Disclosure Schedule,  neither the Company nor any member of the Controlled Group
has  any  liability  for   post-retirement   welfare  benefits  except  for  the
continuation coverage required by Part 6 of Title I of ERISA.

                   (k)  Neither the  Company  nor any of its  subsidiaries  is a
party to any collective bargaining or other labor union contracts. No collective
bargaining  agreement  is  being  negotiated  by  the  Company  or  any  of  its
subsidiaries.  To the  Company's  knowledge,  there is no pending or  threatened
labor  dispute,  strike  or work  stoppage  against  the  Company  or any of its
subsidiaries  which  may  materially  interfere  with  the  respective  business
activities  of the Company or any of its  subsidiaries.  To the knowledge of the
Company, none of the Company, any of its subsidiaries or any of their respective
representatives  or  employees  has  committed  any unfair  labor  practices  in
connection with the operation of the respective businesses of the Company or its
subsidiaries  and,  to the  knowledge  of the  Company,  there is no  pending or
threatened charge or complaint against the Company or any of its subsidiaries by
the National Labor  Relations  Board or any  comparable  state agency that would
have a Company Material Adverse Effect.

            Section 6.11 Taxes.  The Company has prepared and duly filed (and to
its knowledge has done so accurately and correctly) all material federal, state,
county and local income, franchise, use, real property and personal property tax
returns and reports (including all attached  statements and schedules)  required
to be  filed  as of the  date  hereof  with  respect  to  the  Company  and  its
subsidiaries  and has duly paid,  withheld or reserved for all taxes,  penalties
and other  governmental  charges  required to be paid that have been assessed or
levied  against  or upon  the  Company  and  its  subsidiaries  or any of  their
properties,  assets,  income,  franchises,  licenses or sales including  without
limitation income, gross receipt and property taxes. To the extent that any such
taxes  relate to periods on or prior to June 30,  1994,  such taxes have  either
been paid or are reflected as a liability on the Company's June 30, 1994 audited
financial statements. If not paid, the Company is contesting such amount in good
faith by appropriate  proceedings.  In the event the Company is contesting  such
amounts in good faith, the Company has set aside on its books adequate  reserves
in  accordance  with U.S.  GAAP with  respect  thereto  and all of such  matters
involving an amount in excess of $100,000 are  described in Schedule 6.11 to the
Company Disclosure Schedule. Except as set forth in Schedule 6.11 to the Company
Disclosure  Schedule,  the Company  does not know of any  proposal by any taxing
authority  for  material  additional  taxes or  assessments  against or upon the
Company.  Except  as set  forth  in  Schedule  6.11  to the  Company  Disclosure
Schedule,  to the knowledge of the Company all monies required to be withheld by
the  Company  from  employees  for  income  taxes,  social  security  taxes  and
unemployment  insurance  taxes have been collected or withheld or either paid to
the  respective  governmental  agencies  or set aside in cash for such  purpose.
Except as set forth in Schedule  6.11 to the Company  Disclosure  Schedule,  the
Company has not entered  into any  agreement  for the  extension of time for the
assessment  of any tax or tax  delinquency.  The Company has made  

                                      -16-

<PAGE>

available to Purchaser an accurate,  correct and complete copy of each return or
statement filed by, on behalf of or including the Company for federal income tax
purposes or state and local income or  franchise  tax purposes for the tax years
of the Company ended June 30, 1992, June 30, 1993 and June 30, 1994. The Company
is not  subject  to any  joint  venture,  partnership  or other  arrangement  or
contract  that is treated as a  partnership  for  federal  income tax  purposes,
except for NuTec  Mineral & Chemical  Company.  The net  operating  losses,  net
operating  loss carry  forwards and other tax attributes of the Company as shown
in the  federal  corporate  income tax return of the  Company for the year ended
June 30, 1994 are not subject to any  limitation  under Code  Sections 381, 382,
383 or 384,  or any  other  provision  of the Code or the  federal  consolidated
return  regulations  (or any  predecessor  provision  of any Code section or the
regulations),  and, to the knowledge of the Company, no event has occurred since
June 30, 1994 that would prevent the Company from utilizing  these net operating
losses,  net  operating  loss carry  forwards or other tax  attributes if it had
sufficient income. For purposes of the prior sentence "any limitation" shall not
include the specific tax issues  regarding the  Company's  net operating  losses
that have been raised by the Internal Revenue Service in written  communications
to the Company that have been provided to the Purchaser.

            Section 6.12 Environmental Matters.  Except for matters disclosed in
the Company SEC Reports or Schedule 6.12 to the Company Disclosure  Schedule and
except for matters that would not result in a Company  Material  Adverse Effect,
to the knowledge of the Company,  (i) the properties,  operations and activities
of the  Company  and its  subsidiaries  are in  compliance  with all  applicable
Environmental Laws; (ii) the Company and its subsidiaries and the properties and
operations of the Company and its  subsidiaries are not subject to any existing,
pending or threatened action, suit,  investigation,  inquiry or proceeding by or
before any governmental  authority under any  Environmental  Law and neither the
Company nor its subsidiaries  have received any notice that they are responsible
or  potentially  responsible  for clean up of any  property;  (iii) all notices,
permits, licenses, or similar authorizations, if any, required to be obtained or
filed by the Company or any of its subsidiaries  under any  Environmental Law in
connection  with any aspect of the business of the Company or its  subsidiaries,
including without limitation those relating to the treatment,  storage, disposal
or release of a hazardous  substance,  have been duly  obtained or filed and the
Company and its subsidiaries are in compliance,  in all material respects,  with
the terms and  conditions  of all such  notices,  permits,  licenses and similar
authorizations;  (iv) the Company and its  subsidiaries  have  satisfied and are
currently  in  compliance   with  all  financial   responsibility   requirements
applicable to their operations and imposed by any  governmental  authority under
any  Environmental  Law, and the Company and its subsidiaries  have not received
any notice of  material  noncompliance  with any such  financial  responsibility
requirements;  (v) there are no physical or environmental conditions existing on
any property of the Company or its  subsidiaries or resulting from the Company's
or  such  subsidiaries'  operations  or  activities,  past  or  present,  at any
location,  that  would be  reasonably  likely  to give  rise to any  on-site  or
off-site remedial  obligations imposed on the Company or any of its subsidiaries
under any  Environmental  Laws;  (vi) since the  effective  date of the relevant
requirements of applicable Environmental Laws and to the extent required by such
applicable  Environmental Laws, all hazardous substances and wastes generated by
the Company and its subsidiaries have been handled and stored in compliance with
Environmental Laws,  transported 

                                      -17-

<PAGE>

only  by  carriers   authorized  under  Environmental  Laws  to  transport  such
substances and wastes, and disposed of only at treatment,  storage, and disposal
facilities  authorized under  Environmental  Laws to treat,  store or dispose of
such  substances  and wastes;  (vii) there has been no exposure of any person or
property to hazardous substances or any pollutant or contaminant,  nor has there
been any release of hazardous  substances,  or any pollutant or contaminant into
the  environment by the Company or its  subsidiaries or in connection with their
properties or operations  that could  reasonably be expected to give rise to any
claim  against  the  Company or any of its  subsidiaries  for costs,  damages or
compensation;  (viii) the Company and its  subsidiaries  have made  available to
Purchaser  or its agents all  internal  and  external  environmental  audits and
studies  and  all  correspondence  on  substantial   environmental   matters  or
liabilities in the possession of the Company or its subsidiaries relating to any
of the  current  or former  properties  or  operations  of the  Company  and its
subsidiaries  (except  that in the case of any written  materials  for which the
Company  asserts  an  attorney  client  privilege,  the  Company  shall  provide
Purchaser with a list of such materials and a summary of their contents, and the
Company shall cooperate with Purchaser to provide  Purchaser with access to such
materials  if such  access can be provided  without  violation  of the  attorney
client privilege); and (ix) neither the Company nor its subsidiaries are subject
to or have  entered  into any  agreement  requiring  that  they pay to,  defend,
indemnify  or  hold  harmless  any  person  for  or  against  any  environmental
liabilities and costs other than agreements disclosed in the Company SEC Reports
and the Harris Loan.  For purposes of this  Agreement,  the term  "Environmental
Laws" shall mean any and all laws, statutes,  ordinances, rules, regulations, or
orders of any  Governmental  Entity  pertaining  to  health  or the  environment
currently in effect in any and all  jurisdictions in which the party in question
and its  subsidiaries  own  property  or  conduct  business,  including  without
limitation,  the Clean Air Act, as  amended,  the  Comprehensive  Environmental,
Response,  Compensation,  and Liability Act of 1980 ("CERCLA"),  as amended, the
Federal Water Pollution  Control Act, as amended,  the  Occupational  Safety and
Health Act of 1970, as amended,  the Resource  Conservation  and Recovery Act of
1976 ("RCRA"),  as amended,  the Safe Drinking Water Act, as amended,  the Toxic
Substances Control Act, as amended, the Hazardous Materials  Transportation Act,
as amended,  any state laws  implementing  the foregoing  federal laws,  and any
similar  state  laws,  and all other  federal,  state  and  local  environmental
conservation  or  protection  laws.  For purposes of this  Agreement,  the terms
"hazardous  substance"  shall  mean  hazardous  substance  as defined in CERCLA,
petroleum,  and any other chemical or material regulated under any Environmental
Laws,  "release"  shall have the meanings  specified in CERCLA,  and  "disposal"
shall have the meaning specified in RCRA; provided,  however, that to the extent
the current laws of the state in which the property is located have  established
a meaning for "hazardous  substance,"  "release," or "disposal"  that is broader
than that specified in either CERCLA or RCRA, such broader meaning shall apply.

            Section 6.13 Delaware Law. The Board of Directors of the Company has
approved the Tender Offer,  the Merger and this Agreement,  and such approval is
sufficient to render inapplicable the restrictions on business  combinations set
forth  in  Section  203 of the  GCL,  to the  Tender  Offer,  the  Merger,  this
Agreement,  the  transactions  contemplated by this Agreement and any additional
acquisitions of the Shares by Purchaser or Acquisition.

                                      -18-

<PAGE>

            Section 6.14 Inventory;  Accounts  Receivable.  The inventory of the
Company  and its  subsidiaries  consists of raw  materials,  work in process and
finished  goods  and  supplies,  all of which is  merchantable  and fit,  in all
material  respects,  for the purpose for which it was procured or  manufactured,
and none of which is slow-moving,  obsolete, damaged or defective,  subject only
to the reserve for inventory  writedown  provided for in the Company's March 31,
1995 financial  statements,  as adjusted for operations and transactions through
the date hereof in  accordance  with the past custom and practice of the Company
and its subsidiaries.  All notes and accounts  receivable of the Company and its
subsidiaries  are reflected  properly on their books and records in all material
respects.

            Section 6.15 Insurance. The Company and each of its subsidiaries are
currently insured for reasonable amounts against such risks as companies engaged
in a  similar  business  would,  in  accordance  with  good  business  practice,
customarily be insured.

            Section  6.16  Properties.  Except  for liens and  encumbrances  (a)
referred to in the reports described in Schedule 6.16 to the Company  Disclosure
Schedule,  (b) granted by a subsidiary  of the Company to the Company or another
subsidiary,  (c)  granted  pursuant  to the Harris  Loan,  or (d) arising in the
ordinary  course of business and for  properties  and assets  disposed of in the
ordinary   course  of  business  after  June  30,  1994,  the  Company  and  its
subsidiaries have defensible title or leasehold interest,  free and clear of all
liens, the existence of which would have a Company  Material Adverse Effect,  to
all their material properties and assets, whether tangible or intangible,  real,
personal or mixed. All buildings, and all fixtures, equipment and other property
and assets  which are  material to its business on a  consolidated  basis,  held
under  leases by any of the Company or its  subsidiaries  are, to the  Company's
knowledge,  held  under  valid  instruments  enforceable  by the  Company or its
subsidiaries  in  accordance  with  their  respective  terms.  In  all  material
respects,  the Company's  and its  subsidiaries'  plant and equipment  have been
maintained  consistently with industry standards and are in good and serviceable
condition, reasonable wear and tear excepted.

            Section 6.17 Certain  Contracts  and  Restrictions.  The Company SEC
Reports or Schedule 6.17 to the Company Disclosure Schedule list, as of the date
of this  Agreement,  each  agreement,  contract  or  commitment  (other than any
thereof entered into in the ordinary course of business) of a duration in excess
of six months to which the Company or any of its  subsidiaries  is a party or by
which the  Company or any of its  subsidiaries  is bound  pursuant  to which the
Company or its subsidiaries paid consideration during the previous twelve months
in  excess  of  $1,000,000,  or which is  otherwise  material  to the  financial
condition or results of operations of the Company and its subsidiaries, taken as
a whole. The Amendment to Ore Purchase Agreement,  effective as of June 1, 1995,
between  Rhone-Poulenc,  Inc. and the Company remains in effect and has not been
amended or otherwise modified.

            Section  6.18  Information  Supplied.  Without  limiting  any of the
representations  and warranties  contained herein, no representation or warranty
of the Company set forth herein contains any untrue  statement of material fact,
or, at the date thereof,  omits to state a material  

                                      -19-

<PAGE>

fact necessary in order to make the statements  contained  therein,  in light of
the circumstances under which such statements are made, not misleading.

            Section 6.19 Opinion of Financial Advisor.  The Company has received
the opinion of  PaineWebber  Incorporated  to the effect  that,  as of August 8,
1995, the  consideration to be received by the holders of the Shares (other than
stockholders of the Company  affiliated with Weiss,  Peck & Greer) in the Tender
Offer  and/or  the  Merger  is fair,  from a  financial  point of view,  to such
holders.

            Section 6.20 Futures Trading and Fixed Price Exposure. Except as set
forth  in  Schedule  6.20 of the  Company  Disclosure  Schedule  and  except  as
contemplated by the Harris Loan, none of the Company or any of its  subsidiaries
engages  in any  futures or  options  trading or is a party to any price  swaps,
hedges, futures or similar investments.

            Section 6.21  Intellectual  Property.  Schedule  6.21 to the Company
Disclosure Schedule contains a complete list as of the date of this Agreement of
all  material  (i) patents  owned or used by the Company or patent  applications
filed by the  Company,  (ii)  trademarks,  service  marks,  tradenames,  Company
copyrights,  or applications  therefor,  owned or used by the Company.  Schedule
6.21 of the Company  Disclosure  Schedule  lists all officers of the Company who
have executed  technology rights  agreements with the Company.  To the Company's
knowledge, no patents, patent applications,  trademarks, trademark applications,
service marks, service mark applications, trade secrets, tradenames, copyrights,
licenses, inventions, drawings, designs, customer lists, proprietary know how or
information or other rights with respect  thereto  (collectively  referred to as
"Proprietary  Rights"), are necessary to or presently being used in the business
of the  Company  other than those which have been  lawfully  obtained or applied
for; and to the Company's knowledge, the operations of the Company do not in any
material respect conflict with or infringe on the rights of any third party. Any
person who has asserted that the Company's  operations conflict with or infringe
upon any of such person's rights, or any Proprietary Rights owned,  possessed or
used by such other person has been disclosed.

            Section 6.22 Contributions, Etc. The Company annually inquires of at
least its executive officers concerning conduct of the business including use of
funds  for  unlawful  contributions,  gifts,  entertainment,  or other  unlawful
expenses  relating  to  political  activities  unlawful  payments  to foreign or
domestic government  officials,  political parties, or campaigns and no material
violation or unlawful activity has been identified.

            Section  6.23  Easements.  The  business  of  the  Company  and  its
subsidiaries  has been  operated in a manner that does not violate the  material
terms of any easements, rights of way, permits, servitudes,  licenses, leasehold
estates and similar rights relating to real property used by the Company and its
subsidiaries  in such  business  (collectively,  "Easements")  material  to such
business.  All material Easements are valid and enforceable and grant the rights
purported  to be granted  thereby and all rights  necessary  thereunder  for the
current operation of such business.

                                      -20-

<PAGE>

            Section  6.24  Information.  Neither  (a)  the  Proxy  Statement  or
Information   Statement  (other  than  information   provided  by  Purchaser  or
Acquisition,  as to which no  representation  is made),  nor (b) any information
provided by the Company for inclusion in any  amendments or  supplements  to the
Offer  Documents,  nor (c) the  Schedule  14D-9 to be filed  by the  Company  in
connection  with the Tender  Offer and any  amendments  thereof  or  supplements
thereto will contain,  at the respective times such documents are filed with the
SEC,  and, in the case of the Proxy  Statement or  Information  Statement or any
amendments  thereof  or  supplements  thereto,  at the  time of the  meeting  of
stockholders  to be held in connection with the Merger,  if required,  or at the
time of mailing to  stockholders,  as the case may be, any untrue statement of a
material  fact or will omit to state any  material  fact  required  to be stated
therein or necessary in order to make the  statements  therein,  in light of the
circumstances  under which they were made, not  misleading.  The Schedule 14D-9,
the  Proxy  Statement  or  Information  Statement,  as the case may be,  and any
amendments of or supplements to any of the foregoing,  will comply as to form in
all material respects with the provisions of the Exchange Act.

                                  ARTICLE VII
                                   COVENANTS

            Section 7.1  Conduct of Business by the Company  Pending the Merger.
Subsequent to the date hereof and prior to the Effective Date,  unless Purchaser
shall otherwise agree in writing or unless the failure to comply with any of the
following  covenants  results  from  actions  by the Board of  Directors  of the
Company which are approved by a majority of the directors appointed by Purchaser
pursuant  to  Section   7.11  hereof  and  except  as   otherwise   specifically
contemplated by this Agreement:

                   (a) the businesses of the Company and its subsidiaries  shall
be conducted only in, and neither the Company nor any of its subsidiaries  shall
take any action except in, the ordinary and usual course of business.

                   (b) the Company shall not

                   (1) (i)  increase  the  compensation  payable to or to become
         payable to any director or executive  officer,  except for increases in
         salary or wages payable or to become payable in the ordinary  course of
         business and consistent with past practice; (ii) grant any severance or
         termination pay (other than pursuant to the normal  severance policy of
         the  Company  or its  subsidiaries  as in  effect  on the  date of this
         Agreement)  to, or enter  into or amend  any  employment  or  severance
         agreement  with, any director,  officer or employee;  (iii)  establish,
         adopt  or enter  into any new  employee  Plan or  arrangement;  or (iv)
         except as may be required by  applicable  law and actions  that are not
         inconsistent  with the  provisions  of Section 6.10 of this  Agreement,
         amend,  or take any  other  actions  (other  than the  acceleration  of
         vesting or waiving of performance  criteria  permitted  pursuant to the
         Plans upon a change in control of the Company)  with respect to, any of
         the Plans;

                                      -21-

<PAGE>

                   (2)  declare  or pay  any  dividend  on,  or make  any  other
         distribution in respect of, outstanding shares of capital stock, except
         for dividends by a subsidiary to the Company or another subsidiary;

                   (3) (i) except as  described  in  Schedule  7.1(b)(3)  to the
         Company Disclosure Schedule,  redeem, purchase or otherwise acquire any
         shares  of  its  or  any of  its  subsidiaries'  capital  stock  or any
         securities or  obligations  convertible  into or  exchangeable  for any
         shares of its or its  subsidiaries'  capital stock (other than any such
         acquisition directly from any wholly owned subsidiary of the Company in
         exchange for capital contributions or loans to such subsidiary), or any
         options,  warrants or  conversion or other rights to acquire any shares
         of its or its  subsidiaries'  capital  stock or any such  securities or
         obligations  (except in  connection  with the  exercise of  outstanding
         stock options or Warrants in accordance with their terms);  (ii) effect
         any  reorganization  or  recapitalization;  or (iii) split,  combine or
         reclassify  any of its or its  subsidiaries'  capital stock or issue or
         authorize  or propose the issuance of any other  securities  in respect
         of,  in  lieu  of  or  in  substitution  for,  shares  of  its  or  its
         subsidiaries' capital stock;

                   (4) (i) except as  described  in  Schedule  7.1(b)(4)  to the
         Company Disclosure Schedule,  issue, deliver,  award, grant or sell, or
         authorize  or propose  the  issuance,  delivery,  award,  grant or sale
         (including the grant of any security interests, liens, claims, pledges,
         limitations in voting rights,  charges or other  encumbrances)  of, any
         shares  of  any  class  of  its  or  its  subsidiaries'  capital  stock
         (including shares held in treasury), any securities convertible into or
         exercisable  or  exchangeable  for  any  such  shares,  or any  rights,
         warrants or options to acquire any such shares (except as permitted for
         the issuance of shares upon the exercise of stock  options  outstanding
         as of the date of this  Agreement)  other  than (a) the  conversion  of
         Voting Common Stock and Nonvoting Common Stock as provided in paragraph
         4(D)  of  Section  2 of  Article  IV of the  Company's  Certificate  of
         Incorporation,  (b) the exercise of the Warrants or (c) the exercise of
         options under the Stock Option Plans or the  Nonemployee  Plan; or (ii)
         amend or  otherwise  modify the terms of any such  rights,  warrants or
         options the effect of which shall be to make such terms more  favorable
         to the holders thereof;

                   (5) acquire or agree to acquire,  by merging or consolidating
         with, by  purchasing  an equity  interest in or a portion of the assets
         of,  or  by  any  other  manner,   any  business  or  any  corporation,
         partnership,  association  or other business  organization  or division
         thereof,  or  otherwise  acquire or agree to acquire  any assets of any
         other  person  (other than the  purchase of assets  from  suppliers  or
         vendors  in the  ordinary  course of  business)  in each case which are
         material,  individually  or in the  aggregate,  to the  Company and its
         subsidiaries, taken as a whole;

                                      -22-

<PAGE>

                   (6) sell,  lease,  exchange,  mortgage,  pledge,  transfer or
         otherwise  dispose  of, or agree to sell,  lease,  exchange,  mortgage,
         pledge, transfer or otherwise dispose of, any of its material assets or
         any material assets of any of its subsidiaries, except for dispositions
         in the ordinary course of business and consistent with past practice;

                   (7) solicit,  initiate or knowingly  encourage any inquiries,
         discussions  or  negotiations  with any person (other than Purchaser or
         Acquisition) concerning any Acquisition Proposal (as defined in Section
         9.1(c)) or  solicit,  initiate  or  knowingly  encourage  any effort or
         attempt by any other person to do, make or seek an Acquisition Proposal
         or, unless  required in order for the Board of Directors of the Company
         to comply with its fiduciary responsibilities,  with a view to pursuing
         an  Acquisition  Proposal with such person,  engage in  discussions  or
         negotiations with or disclose any nonpublic information relating to the
         Company  or any of its  subsidiaries  to such  person or  authorize  or
         permit any of the  officers,  directors  or employees of the Company or
         any of its subsidiaries or any investment  banker,  financial  adviser,
         attorney, accountant or other representative retained by the Company or
         any of its  subsidiaries  to take any such  action.  The Company  shall
         immediately  communicate  to  Purchaser  in  writing  the  terms of any
         Acquisition Proposal which it may receive;

                   (8) adopt or propose to adopt any  amendments  to its charter
         or By-Laws,  which would alter the terms of its capital  stock or would
         have  an  adverse  impact  on  the  consummation  of  the  transactions
         contemplated by this Agreement;

                   (9) (i) change, in any material  respect,  any of its methods
         of  accounting  in effect at June 30, 1995, or (ii) make or rescind any
         express or deemed election relating to taxes,  settle or compromise any
         claim,   action,    suit,    litigation,    proceeding,    arbitration,
         investigation, audit or controversy relating to Taxes (except where the
         amount of such  settlements or  controversies,  individually  or in the
         aggregate, would not have a Company Material Adverse Effect), or change
         any of its methods of reporting income or deductions for federal income
         tax  purposes  from those  employed in the  preparation  of the federal
         income tax returns for the taxable year ending June 30,  1994,  except,
         in each case, as may be required by Law or U.S. GAAP;

                   (10) other than as permitted  by the Harris  Loan,  incur any
         material  obligation for borrowed money or purchase money indebtedness,
         whether  or  not  evidenced  by a  note,  bond,  debenture  or  similar
         instrument;

                   (11)  enter  into  any  material  arrangement,  agreement  or
         contract  with any third party  (other than  customers  in the ordinary
         course of business)  that  provides for an exclusive  arrangement  with
         that third party or is substantially more restrictive on the Company or
         substantially  less  advantageous  to the  

                                      -23-

<PAGE>

         Company than arrangements, agreements or contracts existing on the date
         hereof unless such  arrangement is entered into in the ordinary  course
         of business; or

                   (12)  agree  in  writing  or  otherwise  to  do  any  of  the
         foregoing.

            Section 7.2  Stockholders'  Meeting and Proxy  Statement.  Except as
provided in Section  9.1 of this  Agreement,  the Company  shall take all action
necessary in accordance with applicable law and its Certificate of Incorporation
and By-Laws to convene a meeting of the  holders of the shares of Voting  Common
Stock of the Company as  promptly as  practicable  after the  expiration  of the
Tender Offer to consider and vote upon the adoption of the Merger Agreement,  if
such stockholder  approval is required by applicable law. In connection with any
stockholders' meeting, if required, the Company shall prepare and file the Proxy
Statement with the SEC and Purchaser  shall furnish all  information  concerning
Purchaser and  Acquisition as the Company may  reasonably  request in connection
with the  preparation  of the Proxy  Statement.  At any  stockholders'  meeting,
Purchaser  agrees to vote or cause all of the Shares  acquired  pursuant  to the
Tender  Offer or otherwise by  Acquisition  or any  affiliate of Purchaser to be
voted in favor of the Merger. The Company shall in the Proxy Statement,  through
its Board of  Directors,  recommend  that the Company's  stockholders  adopt the
Merger Agreement, if such vote is required,  except to the extent that the Board
of Directors shall have withdrawn or modified its approval or  recommendation of
the Tender Offer or the Merger Agreement as contemplated by Section 9.1(c).

            Section 7.3 Certain Filings and Consents. Purchaser, Acquisition and
the  Company  shall (a)  cooperate  with each other in  determining  whether any
filings  are   required  to  be  made  or   consents,   approvals,   permits  or
authorizations  are  required to be  obtained  under any federal or state law or
regulation  or whether any  consents,  approvals  or waivers are  required to be
obtained from other parties to loan  agreements or other  contracts  material to
the business of the Company and its subsidiaries  taken as a whole in connection
with the consummation of the Merger and (b) actively assist each other in making
any such filings and obtaining any consents, permits, authorizations,  approvals
or waivers that are required.

            Section 7.4 Access.  Upon reasonable  notice, the Company shall, and
shall cause each of its subsidiaries  to, afford Purchaser and Acquisition,  and
their respective representatives, full access during normal business hours until
the Effective Date to all of its properties,  books, contracts,  commitments and
records  (including,  but not limited to, tax returns) and,  during that period,
the Company and each of its subsidiaries shall furnish promptly to Purchaser and
Acquisition,  and their respective  representatives,  all information concerning
its business, properties, assets, liabilities,  operations,  financial condition
and personnel as Purchaser or Acquisition may reasonably request; except that in
the case of all  written  materials  for which the  Company  asserts an attorney
client  privilege,  the  Company  shall  provide  Purchaser  with a list of such
materials and a summary of their contents,  and the Company shall cooperate with
Purchaser to provide  Purchaser with access to such materials if such access can
be provided without  violation of the attorney client  privilege.  Purchaser and
Acquisition  shall,  and shall use their  reasonable best efforts to cause their
consultants and advisors to, hold in confidence all such 

                                      -24-

<PAGE>

information until such time as such information is otherwise  publicly available
(unless  otherwise  required to disclose such  information  by law), and if this
Agreement is terminated,  Purchaser and Acquisition shall deliver to the Company
all documents,  work papers and other material obtained by them from the Company
pursuant to the terms of this Agreement.

            Section 7.5 Expenses.

                   (a) Except as provided in Section  9.2(a) of this  Agreement,
all  Expenses  (as  defined in Section  7.5(b)  hereof)  incurred by the parties
hereto shall be borne  solely and entirely by the party which has incurred  such
Expenses.

                   (b)  "Expenses" as used in this  Agreement  shall include all
out-of-pocket expenses (including,  without limitation, all fees and expenses of
counsel,  accountants,  investment  bankers,  experts and consultants to a party
hereto and its  affiliates)  incurred by a party or on its behalf in  connection
with or related to the authorization,  preparation,  negotiation,  execution and
performance of the Tender Offer,  this  Agreement,  the  preparation,  printing,
filing and mailing of the Offer  Documents,  the  Schedule  14D-1,  the Schedule
14D-9,  the Proxy  Statement,  the Information  Statement,  the  solicitation of
stockholder  approvals and all other matters related to the  consummation of the
transactions  contemplated hereby; provided,  however, that "Expenses" shall not
include any fees of legal counsel or advisors of any stockholder of any party.


            Section  7.6  Employee  Stock  Options;  Warrant.  On or before  the
Effective Date of the Merger, the Company shall take all steps necessary for all
outstanding  options  granted  under the Stock Option Plans and the  Nonemployee
Plan to be  converted  by the Merger  into the right to  receive  for each Share
covered  thereby a cash amount  equal to the excess of the Merger Price over the
option exercise  price.  Such amount shall be paid by Purchaser on the Effective
Date. On the Effective  Date of the Merger,  all rights under the Warrants shall
be  converted  by the Merger  into the right to receive  for each Share  covered
thereby the right to receive the Merger Price upon payment to the Company of the
applicable  Warrant exercise price.  The Company shall take no action,  or allow
any action to be taken,  or fail to take any action,  that would cause or result
in any acceleration of exercisability  of outstanding  options granted under the
Stock Option Plans and the Nonemployee Plan.

            Section  7.7  Indemnification  and  Insurance.   The  Company  shall
indemnify and hold  harmless,  and after the Effective  Date,  Purchaser and the
Surviving Corporation shall indemnify and hold harmless,  each present employee,
agent,  director or officer of the Company and the Company's  subsidiaries  (the
"Indemnified  Parties")  (a)  with  respect  to  any  losses,  claims,  damages,
liabilities,  costs and expenses,  including  reasonable  attorneys'  and expert
witness fees,  arising out of or pertaining to any action or omission  occurring
prior to the Effective Date  (including any which arise out of or pertain to the
transactions  contemplated  by this  Agreement)  and (b) as  provided  in  their
respective  charters  or  by-laws  in effect at the date  hereof  (to the extent
consistent with applicable  law),  which provisions shall survive the Merger and
shall 

                                      -25-

<PAGE>

continue  in full force and effect for a period of not less than five years from
the  Effective  Date. In the event any claim or claims (a "Claim or Claims") are
asserted  or made  pursuant to the  preceding  sentence  within  such  five-year
period,  all  rights to  indemnification  in respect of any such Claim or Claims
shall continue until disposition of any and all such Claims. In the event that a
claim is asserted  against any  Indemnified  Party with respect to any matter to
which the indemnities  contained in this section relate,  the Indemnified  Party
shall give prompt written notice to the Surviving  Corporation  setting forth in
reasonable  detail the basis for such claim for  indemnification.  The Surviving
Corporation  shall have the right, at its election,  to take over the defense or
settlement  of such  claim at its own  expense by giving  prompt  notice to that
effect to the  Indemnified  Party.  If the Surviving  Corporation  shall have so
assumed the defense of any Claim, the Surviving  Corporation shall be authorized
to consent to a settlement  of, or the entry of any judgment  arising from,  any
such  Claim,  without  the  prior  written  consent  of the  Indemnified  Party;
provided,  however,  that a condition to any such settlement shall be a complete
release of the  Indemnified  Party with respect to such Claim.  If the Surviving
Corporation  does not,  within  thirty  days after  receipt  of the  Indemnified
Party's  notice of Claim,  (x) give such notice to take over the defense of such
Claim and  proceed to defend the Claim or (y) object to such Claim in writing to
the  Indemnified  Party,  then the  Indemnified  Party  shall  have the right to
undertake the defense of such Claim and the Surviving  Corporation  shall pay to
the  Indemnified  Party the  reasonable  fees and expenses of its  counsel.  The
Surviving  Corporation  shall not be liable for any settlement  effected without
its consent,  which consent shall not be unreasonably  withheld. The Indemnified
Party  shall  at all  times  have the  right,  at its  option  and  expense,  to
participate fully in, but not to control, any such defense. Without limiting the
foregoing, the Company and, after the Effective Date, the Surviving Corporation,
to the extent permitted by applicable law, will periodically  advance reasonable
expenses  as  incurred  with  respect to the  foregoing  to the  fullest  extent
permitted  under  applicable  law  provided  the person to whom the expenses are
advanced  provides an  undertaking  to repay such  advances if it is  ultimately
determined  that such person is not  entitled to  indemnification.  In the event
that within five years from the Effective Date the Surviving  Corporation  shall
consolidate  or merge  with or into any other  person or shall  transfer  all or
substantially  all of its assets to any person and such  person  surviving  such
consolidation  or merger or to which such assets shall have been  transferred is
not a  Delaware  corporation,  the  Surviving  Corporation  shall  enter into an
agreement  pursuant to which such person shall agree to provide  indemnification
substantially equivalent to that required of the Company hereunder.

            Section 7.8  Employee  Benefits.  For a period of two years from the
Effective  Date,  Purchaser  and the  Surviving  Corporation  agree  to honor in
accordance with their terms the Company's  employee  benefit plans, in each case
to the extent the same have been  delivered or made  available to Purchaser  for
review,  provided however that Purchaser or the Surviving  Corporation may amend
or terminate  any such plan at any time after the  Effective  Date to the extent
the amendment or  termination is deemed to be necessary or appropriate to comply
with the requirements of applicable law.

                                      -26-

<PAGE>
            
            Section 7.9  Maintenance  of Financing.  Purchaser  and  Acquisition
shall at all times have  available to them funds  sufficient to  consummate  the
Tender Offer and the Merger on the terms contemplated by this Agreement.

            Section 7.10  Resignation of Directors.  The Company will obtain the
resignations of all of the Continuing  Directors of the Company on the Effective
Date.

            Section  7.11 Board of  Directors.  Upon the  acquisition  of Shares
pursuant to the Tender Offer,  which,  when added  together with Shares owned by
Purchaser  or any of its  direct  or  indirect  subsidiaries,  equal  at least a
majority of the then  outstanding  shares of Voting  Common  Stock,  the Company
shall fill any  vacancies  and  increase  the size of its Board of  Directors as
necessary  to enable  Purchaser  to  designate  at its option a majority  of the
Company's  Board of Directors,  and shall cause  Purchaser's  designees to be so
elected and shall mail promptly the information required by Section 14(f) of the
Act and Rule 14f-1 promulgated thereunder.

                                  ARTICLE VIII
                                   CONDITIONS

            Section 8.1  Conditions  to Each  Party's  Obligation  to Effect the
Merger.  The respective  obligations of each party to effect the Merger shall be
subject to the  fulfillment  at or prior to the Effective  Date of the following
conditions:

                   (a) The  holders of the Voting  Common  Stock of the  Company
entitled to vote shall have duly  approved the Merger if required by  applicable
law.

                   (b) No preliminary or permanent  injunction or other order by
a court of competent  jurisdiction which prevents the consummation of the Merger
shall have been  issued and remain in effect  (each  party  agreeing  to use its
reasonable best efforts to have any such injunction lifted).

                   (c) No action  shall have been  taken nor shall any  statute,
rule or regulation  have been enacted by the  government of the United States or
any state thereof that makes the  consummation of the Tender Offer or the Merger
illegal in any material respect.

                   (d) The applicable waiting period under the Hart-Scott-Rodino
Act with respect to the  transactions  contemplated by this Agreement shall have
expired or been terminated.

            Section 8.2 Conditions to  Obligations of Purchaser and  Acquisition
to Effect the Merger. The obligations of Purchaser and Acquisition to effect the
Merger shall be subject to the  fulfillment at or prior to the Effective Date of
the following additional conditions:

                   (a) The  representations  and  warranties  of the Company set
forth in Article VI shall be true and  correct in all  material  respects on the
Effective  Date (or on such other 

                                      -27-

<PAGE>

date  specified  in Article VI) with the same force and effect as though made on
and as of such  date,  and  Purchaser  and  Acquisition  shall  have  received a
certificate to that effect from the Chief Executive Officer and the Treasurer of
the Company.

                   (b) All of the covenants and  agreements of the Company to be
performed or complied  with  pursuant to this  Agreement  prior to the Effective
Date shall have been duly performed and complied with in all material  respects,
and Purchaser and  Acquisition  shall have received a certificate to that effect
from the Chief Executive Officer and the Treasurer of the Company.

                   (c) Holders of no more than 400,000 Shares, in the aggregate,
shall have filed with the Company a written  objection  to the Merger and made a
written  demand  for  payment  of the fair  value of his  shares  in the  manner
permitted by the GCL.

                   (d) All of the  Continuing  Directors  of the  Company on the
Effective Date shall have resigned.

                   (e) Since the date of this  Agreement,  there shall have been
no Company Material  Adverse Effect;  provided,  however,  that an IRS Notice of
Proposed  Adjustment (to the extent it relates to specific tax issues  regarding
the Company's net operating losses that have been raised by the Internal Revenue
Service in a written  communication  referred to in the last sentence of Section
6.11 shall not be considered a Company Material Adverse Effect for this purpose.

                   (f) Other than taxes duly paid,  withheld or reserved  for by
the Company,  no taxes are payable,  or reasonably expected by the Company to be
payable,  with  respect to items or periods  covered by the  returns and reports
referred  to in Section  6.11  (whether  or not shown on or  reportable  on such
returns or reports or with respect to any period prior to the  Effective  Date),
other  than any such  taxes  which  would  not have a Company  Material  Adverse
Effect.

            Section 8.3  Conditions  to  Obligation of the Company to Effect the
Merger.  The  obligation of the Company to effect the Merger shall be subject to
the  fulfillment at or prior to the Effective  Date of the following  additional
conditions.

                   (a) The  representations  and  warranties  of  Purchaser  and
Acquisition  set forth in Article V shall be true and  correct  in all  material
respects on the  Effective  Date (or on such other date  specified in Article V)
with the same  force and effect as though  made on and as of such date,  and the
Company shall have received certificates to that effect from the Chief Executive
Officer and the Treasurer of Purchaser and the President of Acquisition.

                   (b) All of the  covenants  and  agreements  of Purchaser  and
Acquisition to be performed or complied with pursuant to this Agreement prior to
the  Effective  Date shall have been duly  performed  and  complied  with in all
material  respects,  and the Company  shall 

                                      -28-

<PAGE>

have received  certificates to that effect from the Chief Executive  Officer and
the Treasurer of Purchaser and the President of Acquisition.


                                   ARTICLE IX
                       TERMINATION, AMENDMENT AND WAIVER

            Section  9.1  Termination.   This  Agreement  shall  be  subject  to
termination  at any time prior to the Effective  Date,  whether  before or after
approval by the stockholders of the Company, if required, as follows:

                   (a) by mutual consent of Purchaser and the Board of Directors
of the Company;

                   (b) by  Purchaser or the Company if the Merger shall not have
been  consummated on or before December 15, 1995,  which date may be extended by
mutual agreement of the Boards of Directors of the Company and Purchaser;

                   (c) by the  Company  if,  prior to the  Effective  Date,  the
Company,  its Board of Directors or its  stockholders  shall receive a bona fide
written  proposal or offer from a third party (each an  "Acquisition  Proposal")
relating to:

                        (i) the acquisition or purchase of all or  substantially
              all  of  the  assets  of,  or  more  than  a 50%  equity  interest
              (including any Shares theretofore acquired) in the Company;

                        (ii)  a  merger,   consolidation   or  similar  business
              combination with the Company;

                        (iii)  a  tender  or  exchange  offer  for  the  Company
              conditioned  on  ownership  of more  than  50% of the  outstanding
              Shares following such tender or exchange offer;

and the Board of Directors of the Company  determines  that it has a duty in the
proper  discharge of its  fiduciary  responsibilities  under  applicable  law to
consider such other proposal or offer,  and then such Board of Directors  either
(A)  accepts  such  proposal  or  offer,  (B)  recommends  to  the  stockholders
acceptance of such proposal or offer, or (C) in the case of a tender or exchange
offer,  takes no position with respect  thereto and all  conditions  (other than
terminating  this  Agreement)  of  such  tender  or  exchange  offer  have  been
satisfied,  in which  event  this  Agreement  shall be  terminated  without  any
liability to the Company or the Company's Board of Directors as a result of such
termination other than as set forth in Section 9.2(a).

                   (d)  by   Purchaser   upon   a   breach   of   any   material
representation,  warranty,  covenant or agreement on the part of the Company set
forth in this  Agreement  or if any  

                                      -29-

<PAGE>

representation  or  warranty of the  Company  shall have become  untrue and such
breach or untruth shall have caused a Company Material Adverse Effect.

                   (e)  by  the   Company   upon  a  breach   of  any   material
representation, warranty, covenant or agreement on the part of the Purchaser set
forth in this  Agreement or if any  representation  or warranty of the Purchaser
shall  have  become  untrue  and such  breach or  untruth  shall  have  caused a
Purchaser Material Adverse Effect.

            Section 9.2 Break-Up Fee; Effect of Termination.

                   (a)  If the  Agreement  is  terminated  pursuant  to  Section
9.1(c), the Company shall pay to Purchaser U.S.  $4,000,000 in cash. Any payment
required to be made pursuant to this Section 9.2(a) shall be made as promptly as
practicable  but not later than three  business days after  termination  of this
Agreement,  and shall be made by wire transfer of immediately available funds to
an account designated by Purchaser.

                   (b)  In  the  event  of  termination  of  this  Agreement  by
Purchaser,  Acquisition or the Company (other than pursuant to Section  9.1(c)),
there  shall be no  liability  under  this  Agreement  on the part of either the
Company,  Purchaser or  Acquisition or their  respective  officers or directors,
except for any breach of the  provisions of Section 7.2 and the  confidentiality
provisions  of Section 7.4, and except for any  termination  pursuant to Section
9.1(d) or (e) as a result of a wilful  breach of any  representation,  warranty,
covenant or agreement of Purchaser, Acquisition or the Company contained herein.

            Section 9.3 Amendment.  This Agreement may be amended by the parties
hereto,  by action taken by the  respective  Boards of  Directors of  Purchaser,
Acquisition and the Company,  at any time before or after approval hereof by the
stockholders  of the Company,  but,  after any such  approval,  if required,  no
amendment  shall be made which  changes  the Merger  Price  without  the further
approval of such  stockholders.  This  Agreement may not be amended except by an
instrument in writing signed on behalf of each of the parties hereto.

            Section 9.4 Waiver.  At any time prior to the  Effective  Date,  the
parties  hereto,  by  action  taken by the  respective  Boards of  Directors  of
Purchaser,  Acquisition or the Company,  may (a) extend,  for a reasonable time,
the time for the  performance  of any of the  obligations  or other  acts of the
other parties  hereto,  (b) waive any  inaccuracies in the  representations  and
warranties contained herein or in any document delivered pursuant hereto and (c)
waive compliance with any of the agreements or conditions  contained herein. Any
agreement on the part of the party hereto to any such  extension or waiver shall
be valid if set  forth in an  instrument  in  writing  signed  on behalf of such
party.

                                      -30-

<PAGE>

                                   ARTICLE X
                               GENERAL PROVISIONS

            Section  10.1  Notice of Breach.  Each  party  shall  promptly  give
written  notice to the other parties upon becoming aware of the  occurrence,  or
impending or threatened occurrence, of any event which would cause or constitute
a breach of any of its  representations,  warranties  of covenants  contained or
referred  to in this  Agreement  and shall use its  reasonable  best  efforts to
prevent or promptly remedy the same.

            Section 10.2 Cooperation. Subject to the terms and conditions herein
provided,  each of the parties hereto agrees to use its reasonable  best efforts
to take,  or cause to be taken,  all action and to do, or cause to be done,  all
things  necessary,  proper or advisable under applicable laws and regulations to
consummate and make effective the Merger and the other transactions contemplated
by this  Agreement.  In case at any time after the  Effective  Date any  further
action is necessary or desirable to carry out the purpose of this Agreement, the
proper officers and/or directors of Purchaser,  Acquisition or the Company shall
take, or cause to be taken,  all such necessary  action.  Purchaser  shall cause
Acquisition to comply with all of Acquisition's obligations hereunder.

            Section 10.3 Non-Survival of Representations and Warranties. None of
the representations and warranties in this Agreement shall survive the Effective
Date of the Merger.

            Section 10.4  Brokers.  The Company  represents  and warrants  that,
except for its financial advisor, PaineWebber Incorporated, no broker, finder or
investment  banker  is  entitled  to any  brokerage,  finder's  or other  fee or
commission in connection with the Tender Offer or the Merger.

            Section  10.5  Entire  Agreement.  Other  than  the  Confidentiality
Agreement,  dated  February 1, 1995,  between the  Company and  Purchaser,  this
Agreement  contains the entire  agreement among  Purchaser,  Acquisition and the
Company with respect to the Tender Offer, the Merger and the other  transactions
contemplated  hereby,  and  supersedes  all  prior  agreements,  understandings,
representations, and warranties with respect to the subject matter.

            Section 10.6 Applicable Law. This Agreement shall be governed by and
construed in accordance  with the laws of the State of Delaware  (without giving
effect to its choice of laws principles).

            Section 10.7 Interpretation;  Headings.  When a reference is made in
this  Agreement  to  subsidiaries   of  the  Company  or  Purchaser,   the  word
"subsidiaries" means any corporation,  partnership, limited liability company or
other entity more than 50% of whose  outstanding  voting securities are directly
or  indirectly  owned by the  Company  or  Purchaser,  as the  case may be.  The
headings  contained in this Agreement are for reference  purposes only and shall
not affect in any way the meaning or interpretation of this Agreement.

                                      -31-

<PAGE>

            Section 10.8  Assignment.  Purchaser and Acquisition  shall have the
right  (a) to  assign  to  Purchaser  or any  direct  or  indirect  wholly-owned
subsidiary of Purchaser any and all of the rights and obligations of Acquisition
or Purchaser under this Agreement,  including,  without limitation, the right to
substitute in  Acquisition's  place such a subsidiary as one of the  Constituent
Corporations in the Merger (such  subsidiary  assuming all of the obligations of
Acquisition  in connection  with the Merger) and (b) to transfer to Purchaser or
to one or more directly or indirectly wholly-owned subsidiaries of Purchaser the
right to purchase Shares tendered pursuant to the Tender Offer.

            Section 10.9  Separability.  Any term or provision of this Agreement
which  is  invalid  or  unenforceable  in any  jurisdiction,  shall,  as to such
jurisdiction,   be   ineffective   to  the   extent   of  such   invalidity   or
unenforceability  without rendering invalid or unenforceable the remaining terms
and provisions of this Agreement in any other jurisdiction.  If any provision of
this  Agreement  is so broad as to be  unenforceable,  such  provision  shall be
interpreted to be only so broad as is enforceable.

            Section 10.10  Publicity.  Except as required by law or the rules of
any exchange on which the shares of Purchaser or Company are traded,  as long as
this  Agreement is in effect,  neither the Company nor Purchaser  shall issue or
cause the publication of any press release or other announcement with respect to
the Tender Offer, the Merger or this Agreement  without the prior consent of the
other, which consent shall not be unreasonably withheld.

            Section 10.11 Notices. All notices or other communications hereunder
shall be in  writing  and shall be deemed to have been duly  given if  delivered
personally or sent by first-class  mail,  postage  prepaid,  with return receipt
requested, addressed as follows:

            If to Purchaser or Acquisition, to:

                   D.E.A. Bower, General Counsel
                   10333 Southport Road SW, Suite 426
                   Calgary, Alberta T2W 3X6
                   Fax # 403-258-5761

            with copies to:

                   Thomas A.  Richardson  
                   Holme  Roberts & Owen LLC
                   1700 Lincoln,   Suite   4100
                   Denver,   CO  80203
                   Fax  # 303-866-0200

                                      -32-

<PAGE>

            If to the Company, to:

                   Nu-West Industries, Inc.
                   3010 Conda Road
                   Soda Springs, Idaho  83276
                   Attn:  Craig D. Harlen
                   Fax # 208-547-2550

            with copies to:

                   Davis, Graham & Stubbs, L.L.C.
                   370 17th Street
                   Suite 4700
                   Denver, Colorado  80202
                   Attn:  John L. McCabe, Esq.
                   Fax # 303-893-1379

            Section 10.12  Counterparts.  This  Agreement may be executed in any
number of counterparts,  each of which shall be deemed to be an original but all
of which together shall constitute one agreement.

            Section  10.13 No Third Party  Beneficiaries.  No  provision of this
Agreement is intended to benefit any person other than the parties hereto.

            Section 10.14 Schedules. Inclusion of, or reference to, matters in a
schedule to this  Agreement does not constitute an admission of what is material
or the materiality of such matter.

                                      -33-

<PAGE>

            IN WITNESS  WHEREOF,  Purchaser,  Acquisition  and the Company  have
caused this Agreement to be signed by their respective  officers  thereunto duly
authorized all as of the date first written above.

                                         AGRIUM INC.


                                         By:
                                            Title:



                                         AGRIUM ACQUISITION CORPORATION


                                         By:
                                            Title:



                                         NU-WEST INDUSTRIES, INC.


                                         By:
                                            Title:



<PAGE>


                                   EXHIBIT A


The  capitalized  terms used herein have the meanings set forth in the Agreement
and Plan of Merger dated as of August 9, 1995 (the "Merger  Agreement") to which
this Exhibit A is attached.


CONDITIONS OF THE OFFER

Notwithstanding  any other provision of the Tender Offer,  Acquisition shall not
be required to accept for payment,  purchase or pay for any Shares  tendered and
may terminate or (subject to the terms of the Merger Agreement) amend the Tender
Offer or may postpone  the  acceptance  for payment,  purchase of or payment for
Shares tendered,  if before  acceptance for payment for any such Shares (whether
or not any  Shares  have  theretofore  been  accepted  for  payment  or paid for
pursuant to the Tender Offer) (i) there shall not have been validly tendered and
not properly  withdrawn  pursuant to the Tender Offer at least 60% of the Shares
on a fully  diluted  basis (the "Minimum  Condition"),  (ii) any waiting  period
under the Hart-Scott-Rodino Act applicable to the purchase of Shares pursuant to
the Tender Offer shall not have expired or been terminated,  or (iii) any of the
following shall occur:

(a) Any  representation or warranty of the Company in the Merger Agreement shall
have been  untrue or  incorrect  in any  material  respect as of the date of the
Merger  Agreement and the date of consummation of the Tender Offer with the same
force and  effect as though  made on and as of the date of  consummation  of the
Tender  Offer,  or there has been a breach by the  Company  of any  covenant  or
agreement set forth in the Merger  Agreement  which breach shall not be remedied
within  five  days (or by the  Expiration  Date if  sooner)  of  written  notice
specifying such breach in reasonable  detail and demanding that same be remedied
(except  where such  failure to be true and  correct  or such  breach  would not
reasonably be expected to have a Company Material Adverse Effect).

(b) There shall be any action taken, or any statute, rule,  regulation,  decree,
order or injunction promulgated, enacted, entered into or enforced by any state,
federal or foreign  government  or  governmental  agency or  authority or by any
court  (domestic or foreign) that would (i) make the  acceptance for payment of,
the payment for, or the  purchase  of, some or all of the Shares by  Acquisition
illegal or otherwise  prohibit  consummation  of the Tender Offer or the Merger,
(ii)  prohibit the ability of  Acquisition,  or render  Acquisition  unable,  to
accept for  payment,  pay for or purchase  some or all of the Shares in a manner
that is adverse in any material respect to the transactions  contemplated by the
Tender  Offer  or the  Merger,  (iii)  require  the  divestiture  by  Purchaser,
Acquisition or the Company or any of their respective subsidiaries of all or any
material  portion  of the  business,  assets or  property  of any of them or any
Shares,  or impose  any  material  limitation  on the  ability of any of them to
conduct their business and own such assets,  properties and Shares,  (iv) impose
material  limitations  on the ability of  Acquisition or Purchaser to acquire or
hold or to exercise  effectively  all rights of ownership of Shares,  including,
without limitation, the right to vote any Shares purchased by Acquisition on all
matters properly  

                                      A-1

<PAGE>

presented  to  the  stockholders  of the  Company  or (v)  impose  any  material
limitations  on the  ability  of  Purchaser  or  Acquisition  or  any  of  their
respective  subsidiaries  effectively  to control in any  material  respect  the
business or operations of the Company and its subsidiaries.

(c) Since  the date of the  Merger  Agreement  there  shall  have been a Company
Material Adverse Effect.

(d) The Merger  Agreement  shall have been  terminated  in  accordance  with its
terms.

(e) The Company's Board of Directors  shall have withdrawn,  modified or amended
in any respect materially adverse to Purchaser or Acquisition its recommendation
of the Tender Offer and the Merger or resolved to do so.

                                      A-2



                                   EXHIBIT B

                               IRREVOCABLE PROXY


                  This  irrevocable  proxy (the "Proxy") is granted as of August
9, 1995.

                  WHEREAS,  pursuant to an Agreement and Plan of Merger dated of
even date  herewith  (the  "Merger  Agreement")  among  Agrium  Inc., a Canadian
corporation ("Agrium"),  Agrium Acquisition Corporation,  a Delaware corporation
and wholly-owned  subsidiary of Agrium ("Merger Sub"),  and Nu-West  Industries,
Inc., a Delaware corporation ("Nu-West"), providing for the merger of Merger Sub
with and into  Nu-West  (as  defined in the  Merger  Agreement,  the  "Merger"),
Nu-West will become a wholly-owned subsidiary of Agrium and each share of common
stock, $.01 par value per share, of Nu-West ("Nu-West Common Stock") held by the
undersigned as of the Effective Time (as defined in the Merger Agreement) of the
Merger will be converted into the right to receive $10.50; and

                  WHEREAS,  to induce  Agrium  and  Merger Sub to enter into the
Merger  Agreement and at the request of Agrium,  the  undersigned  has agreed to
appoint and irrevocably grant a proxy to Dale W. Massie,  Dorothy E.A. Bower and
Ian Noble, as designated employees of Agrium, with respect to all Nu-West Common
Stock  beneficially  owned by the  undersigned on the date hereof and all voting
securities of Nu-West  acquired from time to time by the  undersigned  after the
date hereof (such Nu-West Common Stock and  securities  being referred to herein
as the "Covered Shares");

                  NOW,  THEREFORE,  in  consideration  of  the  foregoing,   the
undersigned hereby agrees as follows:

                  1. Grant of Proxy.  The  undersigned  hereby revokes all prior
proxies with respect to the Covered Shares and appoints Dale W. Massie,  Dorothy
E.A. Bower and Ian Noble, in their respective capacities as employees of Agrium,
and each of them individually,  as the undersigned's proxy and  attorney-in-fact
(with full power of  substitution),  for and in the name, place and stead of the
undersigned,  (i) to call a  special  meeting  of  stockholders  of  Nu-West  to
consider  the  Merger,  and (ii) to vote  (or,  at their  discretion,  execute a
written  consent  with  respect to) with or without  the other,  all the Covered
Shares (A) in favor of the Merger and adoption of the Merger Agreement,  and (B)
against any business  combination proposal or other matter that may interfere or
be  inconsistent  with the Merger or the Merger  Agreement  (including,  without
limitation, an Acquisition Proposal, as defined in the Merger Agreement), at any
meeting  of  stockholders  of  Nu-West  (or  consent  in lieu  thereof)  and any
adjournment or adjournments thereof.

                  2.  Representations  and Warranties.  The  undersigned  hereby
represents and warrants to Agrium as follows: the undersigned has full power and
authority  to grant this Proxy,  and neither the  execution  or delivery of this
Proxy nor the performance of the  undersigned's  obligations  hereunder will (A)
conflict  with or result in a breach,  default or  violation  of any  agreement,
proxy,  document,  instrument,  judgment,  decree,  order,  governmental permit,
certificate,  license, law, statute, rule or regulation to which the undersigned
is a party or to which the undersigned is subject, (B) result in the creation of
any lien,  charge or other  encumbrance  on any Covered  Shares  (except for any
encumbrance  created by this Proxy) or (C) require the undersigned to obtain the
consent of any private  nongovernmental  third party.  The  undersigned  further
represents  and  warrants  to  Agrium  that  (i)  as of  the  date  hereof,  the
undersigned  is the sole  record and  beneficial  owner of the number of Covered
Shares set forth opposite the  undersigned's  name below,  free and clear of any
lien, charge, proxy (other than this Proxy) or other encumbrance,  and that such
Covered  Shares  constitute  all of  the  voting  securities  of  Nu-West  owned
beneficially  or of  record by the  undersigned,  and (ii)  except as  expressly
provided in this Proxy, no consent,  action,  approval or  authorization  of, or
registration,   declaration  or  filing  with,  any   governmental   department,
commission,  agency or other  instrumentality  or any other  person or entity is
required  to  authorize,  or is  otherwise  required  in  connection  with,  the
execution  and delivery of this Proxy or the  undersigned's  performance  of the
terms of this Proxy or the validity or  enforceability of this Proxy (other than
any  required  amendment to any  Statement  on Schedule  13D of the  undersigned
caused by the existence and terms of this Proxy).

                  3. Proxy Irrevocable.  The undersigned agrees and acknowledges
that, as a stockholder of Nu-West, he will recieve substantial  consideration in
connection with the Merger,  and that this Proxy is given in  consideration  of,
and as an  inducement  to, the  execution of the Merger  Agreement by Agrium and
Agrium  Sub,  and that the  proxy  granted  hereby  is and shall be deemed to be
coupled  with an  interest  and is not  revocable,  and shall not be  terminated
(other than in accordance  with Section 5 hereof) by any act of the  undersigned
or by operation of law, whether by the death or incapacity of the undersigned or
by the  occurrence  of any other  event or events  whatsoever.  The  undersigned
further  agrees  that he will not grant any proxy or proxies  inconsistent  with
this Proxy. If requested by Agrium,  the  undersigned  agrees that he will enter
into a voting  agreement  or similar  arrangement  with  Agrium or its  designee
relating to the Covered Shares,  which agreement or arrangement  will commit the
undersigned to vote the Covered Shares as specified in Section 1 hereof and will
contain  substantially  similar  representations,  restrictions  on  transfer or
disposition and termination provisions as this Proxy.

                  4. Transferability of Covered Shares. The undersigned will not
sell or otherwise  transfer or dispose of any of the Covered  Shares  unless the
following conditions are met:

                  (a)      prior  written  notice of this  Proxy is given to the
                           transferee; and the transferee agrees that the shares
                           transferred will remain subject to this Proxy and, in
                           connection therewith, executes and delivers to Agrium
                           a proxy  covering  such shares in form and  substance
                           satisfactory  to  Agrium,  which  proxy  shall  be in
                           substantially the form of this Proxy; or

                  (b)      the transfer is to Agrium or its designee pursuant to
                           the tender offer  described in the Merger  Agreement,
                           it being agreed that the undersigned will, subject to
                           Section 5, tender the  Covered  Shares in such tender
                           offer.

                  5. Termination of Proxy.  This Proxy (including the obligation
referred  to  in  Section  4 to  tender  the  Covered  Shares)  shall  terminate
automatically  on  the  earliest  to  occur  of (i)  the  Effective  Time,  (ii)
termination of the Merger  Agreement  pursuant to Section 9.1 thereof,  or (iii)
amendment  of the  Merger  Agreement  with  respect to the price per share to be
received upon the merger or tender.

                  6. Miscellaneous.  The undersigned understands and agrees that
Agrium  is  relying  on this  Proxy  and  may  enforce  its  terms  against  the
undersigned,  and that irreparable  damage would occur in the event of breach of
any provision of the Proxy.  The  undersigned  agrees that, in the event of such
breach, Agrium shall be entitled to specific performance of the terms hereof, in
addition to any other  remedies that may be available at law or in equity.  This
Proxy shall be governed by, and  construed in accordance  with,  the laws of the
State of  Delaware,  regardless  of the laws that might  otherwise  govern under
applicable principles of conflicts of law.

                  IN WITNESS WHEREOF, the undersigned has executed this Proxy as
of the date first set forth above.


Number of Covered Shares:  217,999

                                            WPG CORPORATE DEVELOPMENT
                                               ASSOCIATES III (OVERSEAS), LTD.




                                            By:s/Robin Jarvis                  
                                                  Robin Jarvis
                                                  Director


<PAGE>

                               IRREVOCABLE PROXY


                  This  irrevocable  proxy (the "Proxy") is granted as of August
9, 1995.

                  WHEREAS,  pursuant to an Agreement and Plan of Merger dated of
even date  herewith  (the  "Merger  Agreement")  among  Agrium  Inc., a Canadian
corporation ("Agrium"),  Agrium Acquisition Corporation,  a Delaware corporation
and wholly-owned  subsidiary of Agrium ("Merger Sub"),  and Nu-West  Industries,
Inc., a Delaware corporation ("Nu-West"), providing for the merger of Merger Sub
with and into  Nu-West  (as  defined in the  Merger  Agreement,  the  "Merger"),
Nu-West will become a wholly-owned subsidiary of Agrium and each share of common
stock, $.01 par value per share, of Nu-West ("Nu-West Common Stock") held by the
undersigned as of the Effective Time (as defined in the Merger Agreement) of the
Merger will be converted into the right to receive $10.50; and

                  WHEREAS,  to induce  Agrium  and  Merger Sub to enter into the
Merger  Agreement and at the request of Agrium,  the  undersigned  has agreed to
appoint and irrevocably grant a proxy to Dale W. Massie,  Dorothy E.A. Bower and
Ian Noble, as designated employees of Agrium, with respect to all Nu-West Common
Stock  beneficially  owned by the  undersigned on the date hereof and all voting
securities of Nu-West  acquired from time to time by the  undersigned  after the
date hereof (such Nu-West Common Stock and  securities  being referred to herein
as the "Covered Shares");

                  NOW,  THEREFORE,  in  consideration  of  the  foregoing,   the
undersigned hereby agrees as follows:

                  1. Grant of Proxy.  The  undersigned  hereby revokes all prior
proxies with respect to the Covered Shares and appoints Dale W. Massie,  Dorothy
E.A. Bower and Ian Noble, in their respective capacities as employees of Agrium,
and each of them individually,  as the undersigned's proxy and  attorney-in-fact
(with full power of  substitution),  for and in the name, place and stead of the
undersigned,  (i) to call a  special  meeting  of  stockholders  of  Nu-West  to
consider  the  Merger,  and (ii) to vote  (or,  at their  discretion,  execute a
written  consent  with  respect to) with or without  the other,  all the Covered
Shares (A) in favor of the Merger and adoption of the Merger Agreement,  and (B)
against any business  combination proposal or other matter that may interfere or
be  inconsistent  with the Merger or the Merger  Agreement  (including,  without
limitation, an Acquisition Proposal, as defined in the Merger Agreement), at any
meeting  of  stockholders  of  Nu-West  (or  consent  in lieu  thereof)  and any
adjournment or adjournments thereof.

                  2.  Representations  and Warranties.  The  undersigned  hereby
represents and warrants to Agrium as follows: the undersigned has full power and
authority  to grant this Proxy,  and neither the  execution  or delivery of this
Proxy nor the performance of the  undersigned's  obligations  hereunder will (A)
conflict  with or result in a breach,  default or  violation  of any  agreement,
proxy,  document,  instrument,  judgment,  decree,  order,  governmental permit,
certificate,  license, law, statute, rule or regulation to which the undersigned
is a party or to which the undersigned is subject, (B) result in the creation of
any lien,  charge or other  encumbrance  on any Covered  Shares  (except for any
encumbrance  created by this Proxy) or (C) require the undersigned to obtain the
consent of any private  nongovernmental  third party.  The  undersigned  further
represents  and  warrants  to  Agrium  that  (i)  as of  the  date  hereof,  the
undersigned  is the sole  record and  beneficial  owner of the number of Covered
Shares set forth opposite the  undersigned's  name below,  free and clear of any
lien, charge, proxy (other than this Proxy) or other encumbrance,  and that such
Covered  Shares  constitute  all of  the  voting  securities  of  Nu-West  owned
beneficially  or of  record by the  undersigned,  and (ii)  except as  expressly
provided in this Proxy, no consent,  action,  approval or  authorization  of, or
registration,   declaration  or  filing  with,  any   governmental   department,
commission,  agency or other  instrumentality  or any other  person or entity is
required  to  authorize,  or is  otherwise  required  in  connection  with,  the
execution  and delivery of this Proxy or the  undersigned's  performance  of the
terms of this Proxy or the validity or  enforceability of this Proxy (other than
any  required  amendment to any  Statement  on Schedule  13D of the  undersigned
caused by the existence and terms of this Proxy).

                  3. Proxy Irrevocable.  The undersigned agrees and acknowledges
that, as a stockholder of Nu-West, he will recieve substantial  consideration in
connection with the Merger,  and that this Proxy is given in  consideration  of,
and as an  inducement  to, the  execution of the Merger  Agreement by Agrium and
Agrium  Sub,  and that the  proxy  granted  hereby  is and shall be deemed to be
coupled  with an  interest  and is not  revocable,  and shall not be  terminated
(other than in accordance  with Section 5 hereof) by any act of the  undersigned
or by operation of law, whether by the death or incapacity of the undersigned or
by the  occurrence  of any other  event or events  whatsoever.  The  undersigned
further  agrees  that he will not grant any proxy or proxies  inconsistent  with
this Proxy. If requested by Agrium,  the  undersigned  agrees that he will enter
into a voting  agreement  or similar  arrangement  with  Agrium or its  designee
relating to the Covered Shares,  which agreement or arrangement  will commit the
undersigned to vote the Covered Shares as specified in Section 1 hereof and will
contain  substantially  similar  representations,  restrictions  on  transfer or
disposition and termination provisions as this Proxy.

                  4. Transferability of Covered Shares. The undersigned will not
sell or otherwise  transfer or dispose of any of the Covered  Shares  unless the
following conditions are met:

                  (a)      prior  written  notice of this  Proxy is given to the
                           transferee; and the transferee agrees that the shares
                           transferred will remain subject to this Proxy and, in
                           connection therewith, executes and delivers to Agrium
                           a proxy  covering  such shares in form and  substance
                           satisfactory  to  Agrium,  which  proxy  shall  be in
                           substantially the form of this Proxy; or

                  (b)      the transfer is to Agrium or its designee pursuant to
                           the tender offer  described in the Merger  Agreement,
                           it being agreed that the undersigned will, subject to
                           Section 5, tender the  Covered  Shares in such tender
                           offer.

                  5. Termination of Proxy.  This Proxy (including the obligation
referred  to  in  Section  4 to  tender  the  Covered  Shares)  shall  terminate
automatically  on  the  earliest  to  occur  of (i)  the  Effective  Time,  (ii)
termination of the Merger  Agreement  pursuant to Section 9.1 thereof,  or (iii)
amendment  of the  Merger  Agreement  with  respect to the price per share to be
received upon the merger or tender.

                  6. Miscellaneous.  The undersigned understands and agrees that
Agrium  is  relying  on this  Proxy  and  may  enforce  its  terms  against  the
undersigned,  and that irreparable  damage would occur in the event of breach of
any provision of the Proxy.  The  undersigned  agrees that, in the event of such
breach, Agrium shall be entitled to specific performance of the terms hereof, in
addition to any other  remedies that may be available at law or in equity.  This
Proxy shall be governed by, and  construed in accordance  with,  the laws of the
State of  Delaware,  regardless  of the laws that might  otherwise  govern under
applicable principles of conflicts of law.

                  IN WITNESS WHEREOF, the undersigned has executed this Proxy as
of the date first set forth above.


Number of Covered Shares:  2,488,005

                                        WPG CORPORATE DEVELOPMENT
                                           ASSOCIATES II, L.P. LIQUIDATING
                                           TRUST, U/T/A dated December 31, 1993

                                         By:      Weiss, Peck & Greer, L.L.C.,
                                                  the sole trustee




                                              By:s/Wesley W. Lang, Jr.      
                                                     Wesley W. Lang, Jr.
                                                     Principal


<PAGE>


                               IRREVOCABLE PROXY


                  This  irrevocable  proxy (the "Proxy") is granted as of August
9, 1995.

                  WHEREAS,  pursuant to an Agreement and Plan of Merger dated of
even date  herewith  (the  "Merger  Agreement")  among  Agrium  Inc., a Canadian
corporation ("Agrium"),  Agrium Acquisition Corporation,  a Delaware corporation
and wholly-owned  subsidiary of Agrium ("Merger Sub"),  and Nu-West  Industries,
Inc., a Delaware corporation ("Nu-West"), providing for the merger of Merger Sub
with and into  Nu-West  (as  defined in the  Merger  Agreement,  the  "Merger"),
Nu-West will become a wholly-owned subsidiary of Agrium and each share of common
stock, $.01 par value per share, of Nu-West ("Nu-West Common Stock") held by the
undersigned as of the Effective Time (as defined in the Merger Agreement) of the
Merger will be converted into the right to receive $10.50; and

                  WHEREAS,  to induce  Agrium  and  Merger Sub to enter into the
Merger  Agreement and at the request of Agrium,  the  undersigned  has agreed to
appoint and irrevocably grant a proxy to Dale W. Massie,  Dorothy E.A. Bower and
Ian Noble, as designated employees of Agrium, with respect to all Nu-West Common
Stock  beneficially  owned by the  undersigned on the date hereof and all voting
securities of Nu-West  acquired from time to time by the  undersigned  after the
date hereof (such Nu-West Common Stock and  securities  being referred to herein
as the "Covered Shares");

                  NOW,  THEREFORE,  in  consideration  of  the  foregoing,   the
undersigned hereby agrees as follows:

                  1. Grant of Proxy.  The  undersigned  hereby revokes all prior
proxies with respect to the Covered Shares and appoints Dale W. Massie,  Dorothy
E.A. Bower and Ian Noble, in their respective capacities as employees of Agrium,
and each of them individually,  as the undersigned's proxy and  attorney-in-fact
(with full power of  substitution),  for and in the name, place and stead of the
undersigned,  (i) to call a  special  meeting  of  stockholders  of  Nu-West  to
consider  the  Merger,  and (ii) to vote  (or,  at their  discretion,  execute a
written  consent  with  respect to) with or without  the other,  all the Covered
Shares (A) in favor of the Merger and adoption of the Merger Agreement,  and (B)
against any business  combination proposal or other matter that may interfere or
be  inconsistent  with the Merger or the Merger  Agreement  (including,  without
limitation, an Acquisition Proposal, as defined in the Merger Agreement), at any
meeting  of  stockholders  of  Nu-West  (or  consent  in lieu  thereof)  and any
adjournment or adjournments thereof.

                  2.  Representations  and Warranties.  The  undersigned  hereby
represents and warrants to Agrium as follows: the undersigned has full power and
authority  to grant this Proxy,  and neither the  execution  or delivery of this
Proxy nor the performance of the  undersigned's  obligations  hereunder will (A)
conflict  with or result in a breach,  default or  violation  of any  agreement,
proxy,  document,  instrument,  judgment,  decree,  order,  governmental permit,
certificate,  license, law, statute, rule or regulation to which the undersigned
is a party or to which the undersigned is subject, (B) result in the creation of
any lien,  charge or other  encumbrance  on any Covered  Shares  (except for any
encumbrance  created by this Proxy) or (C) require the undersigned to obtain the
consent of any private  nongovernmental  third party.  The  undersigned  further
represents  and  warrants  to  Agrium  that  (i)  as of  the  date  hereof,  the
undersigned  is the sole  record and  beneficial  owner of the number of Covered
Shares set forth opposite the  undersigned's  name below,  free and clear of any
lien, charge, proxy (other than this Proxy) or other encumbrance,  and that such
Covered  Shares  constitute  all of  the  voting  securities  of  Nu-West  owned
beneficially  or of  record by the  undersigned,  and (ii)  except as  expressly
provided in this Proxy, no consent,  action,  approval or  authorization  of, or
registration,   declaration  or  filing  with,  any   governmental   department,
commission,  agency or other  instrumentality  or any other  person or entity is
required  to  authorize,  or is  otherwise  required  in  connection  with,  the
execution  and delivery of this Proxy or the  undersigned's  performance  of the
terms of this Proxy or the validity or  enforceability of this Proxy (other than
any  required  amendment to any  Statement  on Schedule  13D of the  undersigned
caused by the existence and terms of this Proxy).

                  3. Proxy Irrevocable.  The undersigned agrees and acknowledges
that, as a stockholder of Nu-West, he will recieve substantial  consideration in
connection with the Merger,  and that this Proxy is given in  consideration  of,
and as an  inducement  to, the  execution of the Merger  Agreement by Agrium and
Agrium  Sub,  and that the  proxy  granted  hereby  is and shall be deemed to be
coupled  with an  interest  and is not  revocable,  and shall not be  terminated
(other than in accordance  with Section 5 hereof) by any act of the  undersigned
or by operation of law, whether by the death or incapacity of the undersigned or
by the  occurrence  of any other  event or events  whatsoever.  The  undersigned
further  agrees  that he will not grant any proxy or proxies  inconsistent  with
this Proxy. If requested by Agrium,  the  undersigned  agrees that he will enter
into a voting  agreement  or similar  arrangement  with  Agrium or its  designee
relating to the Covered Shares,  which agreement or arrangement  will commit the
undersigned to vote the Covered Shares as specified in Section 1 hereof and will
contain  substantially  similar  representations,  restrictions  on  transfer or
disposition and termination provisions as this Proxy.

                  4. Transferability of Covered Shares. The undersigned will not
sell or otherwise  transfer or dispose of any of the Covered  Shares  unless the
following conditions are met:

                  (a)      prior  written  notice of this  Proxy is given to the
                           transferee; and the transferee agrees that the shares
                           transferred will remain subject to this Proxy and, in
                           connection therewith, executes and delivers to Agrium
                           a proxy  covering  such shares in form and  substance
                           satisfactory  to  Agrium,  which  proxy  shall  be in
                           substantially the form of this Proxy; or

                  (b)      the transfer is to Agrium or its designee pursuant to
                           the tender offer  described in the Merger  Agreement,
                           it being agreed that the undersigned will, subject to
                           Section 5, tender the  Covered  Shares in such tender
                           offer.

                  5. Termination of Proxy.  This Proxy (including the obligation
referred  to  in  Section  4 to  tender  the  Covered  Shares)  shall  terminate
automatically  on  the  earliest  to  occur  of (i)  the  Effective  Time,  (ii)
termination of the Merger  Agreement  pursuant to Section 9.1 thereof,  or (iii)
amendment  of the  Merger  Agreement  with  respect to the price per share to be
received upon the merger or tender.

                  6. Miscellaneous.  The undersigned understands and agrees that
Agrium  is  relying  on this  Proxy  and  may  enforce  its  terms  against  the
undersigned,  and that irreparable  damage would occur in the event of breach of
any provision of the Proxy.  The  undersigned  agrees that, in the event of such
breach, Agrium shall be entitled to specific performance of the terms hereof, in
addition to any other  remedies that may be available at law or in equity.  This
Proxy shall be governed by, and  construed in accordance  with,  the laws of the
State of  Delaware,  regardless  of the laws that might  otherwise  govern under
applicable principles of conflicts of law.

                  IN WITNESS WHEREOF, the undersigned has executed this Proxy as
of the date first set forth above.


Number of Covered Shares:  1,027,714

                                            WPG CORPORATE DEVELOPMENT
                                               ASSOCIATES III, L.P.

                                            By:      WPG CDA III, L.P.




                                            By:s/Wesley W. Lang, Jr.
                                                Wesley W. Lang, Jr.


<PAGE>

                               IRREVOCABLE PROXY


                  This  irrevocable  proxy (the "Proxy") is granted as of August
9, 1995.

                  WHEREAS,  pursuant to an Agreement and Plan of Merger dated of
even date  herewith  (the  "Merger  Agreement")  among  Agrium  Inc., a Canadian
corporation ("Agrium"),  Agrium Acquisition Corporation,  a Delaware corporation
and wholly-owned  subsidiary of Agrium ("Merger Sub"),  and Nu-West  Industries,
Inc., a Delaware corporation ("Nu-West"), providing for the merger of Merger Sub
with and into  Nu-West  (as  defined in the  Merger  Agreement,  the  "Merger"),
Nu-West will become a wholly-owned subsidiary of Agrium and each share of common
stock, $.01 par value per share, of Nu-West ("Nu-West Common Stock") held by the
undersigned as of the Effective Time (as defined in the Merger Agreement) of the
Merger will be converted into the right to receive $10.50; and

                  WHEREAS,  to induce  Agrium  and  Merger Sub to enter into the
Merger  Agreement and at the request of Agrium,  the  undersigned  has agreed to
appoint and irrevocably grant a proxy to Dale W. Massie,  Dorothy E.A. Bower and
Ian Noble, as designated employees of Agrium, with respect to all Nu-West Common
Stock  beneficially  owned by the  undersigned on the date hereof and all voting
securities of Nu-West  acquired from time to time by the  undersigned  after the
date hereof (such Nu-West Common Stock and  securities  being referred to herein
as the "Covered Shares");

                  NOW,  THEREFORE,  in  consideration  of  the  foregoing,   the
undersigned hereby agrees as follows:

                  1. Grant of Proxy.  The  undersigned  hereby revokes all prior
proxies with respect to the Covered Shares and appoints Dale W. Massie,  Dorothy
E.A. Bower and Ian Noble, in their respective capacities as employees of Agrium,
and each of them individually,  as the undersigned's proxy and  attorney-in-fact
(with full power of  substitution),  for and in the name, place and stead of the
undersigned,  (i) to call a  special  meeting  of  stockholders  of  Nu-West  to
consider  the  Merger,  and (ii) to vote  (or,  at their  discretion,  execute a
written  consent  with  respect to) with or without  the other,  all the Covered
Shares (A) in favor of the Merger and adoption of the Merger Agreement,  and (B)
against any business  combination proposal or other matter that may interfere or
be  inconsistent  with the Merger or the Merger  Agreement  (including,  without
limitation, an Acquisition Proposal, as defined in the Merger Agreement), at any
meeting  of  stockholders  of  Nu-West  (or  consent  in lieu  thereof)  and any
adjournment or adjournments thereof.

                  2.  Representations  and Warranties.  The  undersigned  hereby
represents and warrants to Agrium as follows: the undersigned has full power and
authority  to grant this Proxy,  and neither the  execution  or delivery of this
Proxy nor the performance of the  undersigned's  obligations  hereunder will (A)
conflict  with or result in a breach,  default or  violation  of any  agreement,
proxy,  document,  instrument,  judgment,  decree,  order,  governmental permit,
certificate,  license, law, statute, rule or regulation to which the undersigned
is a party or to which the undersigned is subject, (B) result in the creation of
any lien,  charge or other  encumbrance  on any Covered  Shares  (except for any
encumbrance  created by this Proxy) or (C) require the undersigned to obtain the
consent of any private  nongovernmental  third party.  The  undersigned  further
represents  and  warrants  to  Agrium  that  (i)  as of  the  date  hereof,  the
undersigned  is the sole  record and  beneficial  owner of the number of Covered
Shares set forth opposite the  undersigned's  name below,  free and clear of any
lien, charge, proxy (other than this Proxy) or other encumbrance,  and that such
Covered  Shares  constitute  all of  the  voting  securities  of  Nu-West  owned
beneficially  or of  record by the  undersigned,  and (ii)  except as  expressly
provided in this Proxy, no consent,  action,  approval or  authorization  of, or
registration,   declaration  or  filing  with,  any   governmental   department,
commission,  agency or other  instrumentality  or any other  person or entity is
required  to  authorize,  or is  otherwise  required  in  connection  with,  the
execution  and delivery of this Proxy or the  undersigned's  performance  of the
terms of this Proxy or the validity or  enforceability of this Proxy (other than
any  required  amendment to any  Statement  on Schedule  13D of the  undersigned
caused by the existence and terms of this Proxy).

                  3. Proxy Irrevocable.  The undersigned agrees and acknowledges
that, as a stockholder of Nu-West, he will recieve substantial  consideration in
connection with the Merger,  and that this Proxy is given in  consideration  of,
and as an  inducement  to, the  execution of the Merger  Agreement by Agrium and
Agrium  Sub,  and that the  proxy  granted  hereby  is and shall be deemed to be
coupled  with an  interest  and is not  revocable,  and shall not be  terminated
(other than in accordance  with Section 5 hereof) by any act of the  undersigned
or by operation of law, whether by the death or incapacity of the undersigned or
by the  occurrence  of any other  event or events  whatsoever.  The  undersigned
further  agrees  that he will not grant any proxy or proxies  inconsistent  with
this Proxy. If requested by Agrium,  the  undersigned  agrees that he will enter
into a voting  agreement  or similar  arrangement  with  Agrium or its  designee
relating to the Covered Shares,  which agreement or arrangement  will commit the
undersigned to vote the Covered Shares as specified in Section 1 hereof and will
contain  substantially  similar  representations,  restrictions  on  transfer or
disposition and termination provisions as this Proxy.

                  4. Transferability of Covered Shares. The undersigned will not
sell or otherwise  transfer or dispose of any of the Covered  Shares  unless the
following conditions are met:

                  (a)      prior  written  notice of this  Proxy is given to the
                           transferee; and the transferee agrees that the shares
                           transferred will remain subject to this Proxy and, in
                           connection therewith, executes and delivers to Agrium
                           a proxy  covering  such shares in form and  substance
                           satisfactory  to  Agrium,  which  proxy  shall  be in
                           substantially the form of this Proxy; or

                 (b)      the transfer is to Agrium or its designee pursuant to
                           the tender offer  described in the Merger  Agreement,
                           it being agreed that the undersigned will, subject to
                           Section 5, tender the  Covered  Shares in such tender
                           offer.

                  5. Termination of Proxy.  This Proxy (including the obligation
referred  to  in  Section  4 to  tender  the  Covered  Shares)  shall  terminate
automatically  on  the  earliest  to  occur  of (i)  the  Effective  Time,  (ii)
termination of the Merger  Agreement  pursuant to Section 8.1 thereof,  or (iii)
amendment  of the  Merger  Agreement  with  respect to the price per share to be
received upon the merger or tender.

                  6. Miscellaneous.  The undersigned understands and agrees that
Agrium  is  relying  on this  Proxy  and  may  enforce  its  terms  against  the
undersigned,  and that irreparable  damage would occur in the event of breach of
any provision of the Proxy.  The  undersigned  agrees that, in the event of such
breach, Agrium shall be entitled to specific performance of the terms hereof, in
addition to any other  remedies that may be available at law or in equity.  This
Proxy shall be governed by, and  construed in accordance  with,  the laws of the
State of  Delaware,  regardless  of the laws that might  otherwise  govern under
applicable principles of conflicts of law.

                  IN WITNESS WHEREOF, the undersigned has executed this Proxy as
of the date first set forth above.


Number of Covered Shares:  880,563

                                        WEISS, PECK & GREER VENTURE
                                        ASSOCIATES, L.P. LIQUIDATING TRUST
                                        U/T/A dated December 30, 1994

                                        By:      Weiss, Peck & Greer, L.L.C.




                                        By:s/Wesley W. Lang, Jr. 
                                              Wesley W. Lang, Jr.
                                              Principal



                                   EXHIBIT C



                  Pursuant to Rule  13d-1(f)(1)(iii) of Regulation  13D-G of the
General Rules and  Regulations of the Securities and Exchange  Commission  under
the Securities Exchange Act of 1934, as amended,  the undersigned agree that the
statement  to which this  Exhibit is attached is filed on behalf of each of them
in the capacities set forth herein below.


*
Wesley W. Lang, Jr.



s/Peter Pfister
Peter Pfister


WPG CORPORATE DEVELOPMENT ASSOCIATES II, L.P. LIQUIDATING TRUST

By:      WEISS, PECK & GREER, L.L.C.
         its sole trustee


         By:s/Philip Greer




WEISS, PECK & GREER VENTURE ASSOCIATES, L.P. LIQUIDATING TRUST

By:      WEISS, PECK & GREER, L.L.C.
         its sole trustee


         By:s/Philip Greer





WPG CORPORATE DEVELOPMENT ASSOCIATES III, L.P.

By:      WPG CDA III, L.P.
         its sole general partner


         By:*
            Wesley W. Lang, Jr.


WPG CDA III, L.P.


         By:*
            Wesley W. Lang, Jr.


WPG CORPORATE DEVELOPMENT ASSOCIATES III (OVERSEAS), LTD.


By:s/ Robin Jarvis




WEISS, PECK & GREER, L.L.C.


By:s/Philip Greer


*By:s/Robin Shanus
    Robin B. Shanus
    Attorney-in-Fact



                                   EXHIBIT D

                               POWER OF ATTORNEY



                  KNOW ALL MEN BY THESE  PRESENTS,  that  the  undersigned  have
made,  constituted  and  appointed,  and by these  presents  does  hereby  make,
constitute  and appoint each of Robin B. Shanus and Peter B. Pfister,  with full
power of substitution,  a true and lawful  attorney-in-fact,  for him and in his
name, place and stead to execute, acknowledge,  deliver and file (a) any and all
filings  required by Sections 13 and 16 of the Securities  Exchange Act of 1934,
as amended,  and the rules and regulations  promulgated  thereunder,  respecting
securities beneficially owned by the undersigned, including, but not limited to,
Schedules  13D,  Schedules  13G,  Forms 3,  Forms 4, and  Forms 5, and (b) joint
filing agreements in connection with filings on Schedule 13D or Schedule 13G.

                  The  validity of this Power of Attorney  shall not be affected
in any  manner by  reason of the  execution,  at any  time,  of other  powers of
attorney by the undersigned in favor of persons other than those named herein.

                  The  undersigned  agrees and  represents to those dealing with
his  attorneys-in-fact  herein, Robin B. Shanus and Peter B. Pfister,  that this
Power of Attorney  may be  voluntarily  revoked  only by written  notice to such
attorney-in-fact.

                  WITNESS THE EXECUTION HEREOF this 14th day of August, 1995.



                                              s/Wesley W. Lang, Jr.   
                                              Wesley W. Lang, Jr.

                                              WPG CORPORATE DEVELOPMENT
                                                ASSOCIATES III, L.P.

                                                By:    WPG CDA III, L.P.
                                                     its sole general partner


                                                By:s/Wesley W. Lang, Jr.
                                                        Wesley W. Lang, Jr.

                                              WPG CDA III, L.P.

                                                By:s/Wesley W. Lang, Jr.
                                                        Wesley W. Lang, Jr.




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