HARRIS CHEMICAL NORTH AMERICA INC
8-K, 1997-03-18
MINING & QUARRYING OF NONMETALLIC MINERALS (NO FUELS)
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

                                February 27, 1997

                       HARRIS CHEMICAL NORTH AMERICA, INC.
             (Exact name of registrant as specified in its charter)

                                    DELAWARE
                 (State or other jurisdiction of incorporation)

                                    33-67546
                            (Commission file number)

                                   48-1135402
                     (I.R.S. Employer Identification Number)

                           399 PARK AVENUE, 32nd FLOOR
                            NEW YORK, NEW YORK 10022
                    (Address of principal executive offices)

                                 (212) 207-6400
              (Registrant's telephone number, including area code)



<PAGE>



Item 5.  Other Events


Harris  Chemical North America,  Inc. (the  "Company")  previously had revolving
credit facilities with a group of banks totaling $150 million.  These facilities
were to expire in October 1998, bore interest at (i) the bank's base rate plus a
margin  percentage  ranging  from  1.50% to 2.00% or (ii) the  London  Interbank
Offered Rate (LIBOR) plus a margin  percentage  ranging from 2.50% to 3.00%,  at
the option of the Company, and contained various restrictive covenants.

On February 27,  1997,  the Company  entered  into an agreement  with one of the
existing  lenders  to  replace  the  current  borrowing  arrangements  with  new
revolving credit agreements for its principal  operating  subsidiaries.  The new
facilities total $150 million including a U.S.  commitment of $130 million and a
Canadian  commitment  of $20  million.  The  terms  for the new  agreements  are
substantially the same as the present facilities except that (i) the term of the
agreements  will extend at least  through  February 15, 2001,  and (ii) interest
rates  will be set at (a) a defined  U.S.  Base Rate (or in the case of  Sifto's
Canadian  Dollar  borrowings,  a defined  Canadian Prime Rate) plus 1.50% or (b)
LIBOR (or in the case of Sifto's Canadian Dollar  borrowings,  a defined BA Loan
Rate)  plus  2.75%,  at  the  option  of the  Company.  The  financial  covenant
requirements  will generally be less  restrictive  than those under the existing
facilities  and will (i) eliminate the "annual clean down  provision"  requiring
the Company to pay its revolver balance to less than $50 million for a period of
30  consecutive   days,  (ii)  decrease  the  minimum  interest  coverage  ratio
requirement;  (iii) decrease the minimum fixed charge coverage ratio and exclude
certain major capital projects from the covenant requirement;  and (iv) increase
the maximum net funded debt ratio.


Item 7.  Financial Statements and Exhibits


Exhibit No.       Description of Exhibit
99.1              US$130,000,000 Credit and Guarantee Agreement dated as of 
                  October 15, 1993, as amended and restated as of February 27,
                  1997

99.2              US$20,000,000 Multi-Currency Credit and Guarantee Agreement 
                  dated as of October 15, 1993, as amended and restated as of
                  February 27, 1997












<PAGE>


SIGNATURE

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


                                           Harris Chemical North America, Inc.
                                           (Registrant)


Date:    March 18, 1997                    /s/ Emanuel J. Di Teresi
         --------------                    -------------------------------
                                           Senior Vice President and
                                           Chief Financial Officer
                                           Chief Accounting Officer



<PAGE>




                                                                  EXECUTION COPY


                         NORTH AMERICAN CHEMICAL COMPANY
                           NORTH AMERICAN SALT COMPANY
                      GREAT SALT LAKE MINERALS CORPORATION,
                                  as Borrowers


                      HARRIS CHEMICAL NORTH AMERICA, INC.,
                                  as Guarantor






                                 US$130,000,000
                         CREDIT AND GUARANTEE AGREEMENT

                          dated as of October 15, 1993,
                          as amended and restated as of
                                February 27, 1997






                      GENERAL ELECTRIC CAPITAL CORPORATION,
                 as Collateral Agent and as Administrative Agent

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                                TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                                                                Page
                                                                                                                ----

<S>                                                                                                              <C>
SECTION 1.             DEFINITIONS..............................................................................  2
         1.1  Defined Terms.....................................................................................  2
         1.2  Other Definitional Provisions..................................................................... 30

SECTION 2.             AMOUNT AND TERMS OF REVOLVING CREDIT
                       COMMITMENTS.............................................................................. 30
         2.1  Revolving Credit Commitments...................................................................... 30
         2.2  Revolving Credit Notes............................................................................ 31
         2.3  [INTENTIONALLY OMITTED] .......................................................................... 31
         2.4  [INTENTIONALLY OMITTED] .......................................................................... 31
         2.5  Procedure for Borrowing........................................................................... 32
         2.6  Use of Proceeds of Loans.......................................................................... 32

SECTION 3.             AMOUNT AND TERMS OF LETTER OF CREDIT
                       SUB-FACILITY............................................................................. 32
         3.1  Issuance ......................................................................................... 32
         3.2  Advances Automatic; Participations................................................................ 34
         3.3  Cash Collateral................................................................................... 34
         3.4  Fees and Expenses................................................................................. 36
         3.5  Request for Incurrence of L/C Obligations......................................................... 36
         3.6  Obligations Absolute.............................................................................. 36
         3.7  Nature of Lenders' Duties......................................................................... 37
         3.8  Application....................................................................................... 38

SECTION 4.             [INTENTIONALLY OMITTED].................................................................. 38

SECTION 5.             AMOUNT AND TERMS OF SWING LINE SUB-FACILITY.............................................. 38
         5.1  Swing Line Commitments............................................................................ 38
         5.2  Swing Line Loan Note.............................................................................. 39
         5.3  Procedure for Swing Line Loan Borrowing........................................................... 39
         5.4  Refunding of Swing Line Loans..................................................................... 39
         5.5  Unconditional Obligation to Refund Swing Line Loans............................................... 40
         5.6  Use of Proceeds of Swing Line Loans............................................................... 41

SECTION 6.             PROVISIONS RELATING TO CERTAIN EXTENSIONS OF
                       CREDIT; FEES AND PAYMENTS................................................................ 41
         6.1  Commitment Fee.................................................................................... 41
         6.2  Termination or Reduction of Commitments........................................................... 41
         6.3  Optional Prepayments.............................................................................. 41
         6.4  Mandatory Prepayments............................................................................. 42
         6.5  [INTENTIONALLY OMITTED] .......................................................................... 43
         6.6  Conversion and Continuation Options............................................................... 43
</TABLE>

                                      - i -

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<TABLE>

                                                                                                                Page
                                                                                                                ----
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         6.7  Minimum Amounts of Tranches....................................................................... 44
         6.8  Interest Rates and Payment Dates.................................................................. 44
         6.9  Computation of Interest and Fees.................................................................. 44
         6.10  Inability to Determine Interest Rate............................................................. 45
         6.11  Pro Rata Treatment and Payments.................................................................. 45
         6.12  Illegality....................................................................................... 46
         6.13  Requirements of Law.............................................................................. 47
         6.14  Taxes   ......................................................................................... 48
         6.15  Replacement of Claimant.......................................................................... 50
         6.16  Indemnity........................................................................................ 51
         6.17  Repayment of Obligations......................................................................... 52

SECTION 7.             REPRESENTATIONS AND WARRANTIES........................................................... 52
         7.1  Financial Condition............................................................................... 52
         7.2  No Change......................................................................................... 53
         7.3  Corporate Existence; Compliance with Law.......................................................... 53
         7.4  Corporate Power; Authorization; Enforceable Obligations........................................... 53
         7.5  No Legal Bar...................................................................................... 54
         7.6  No Material Litigation............................................................................ 54
         7.7  No Default........................................................................................ 54
         7.8  Ownership of Property; Liens...................................................................... 54
         7.9  Intellectual Property............................................................................. 54
         7.10  No Burdensome Restrictions....................................................................... 55
         7.11  Taxes   ......................................................................................... 55
         7.12  Federal Regulations.............................................................................. 55
         7.13  ERISA   ......................................................................................... 55
         7.14  Investment Company Act; Other Regulations........................................................ 56
         7.15  Subsidiaries; Guarantors......................................................................... 56
         7.16  Environmental Matters............................................................................ 56
         7.17  Solvency......................................................................................... 57
         7.18  Searles Valley Manufacturing Process............................................................. 57
         7.19  No Other Restriction............................................................................. 57

SECTION 8.             CONDITIONS PRECEDENT..................................................................... 58
         8.1  Conditions to Effectiveness....................................................................... 58
         8.2  Conditions to Each Extension of Credit............................................................ 61

SECTION 9.             AFFIRMATIVE COVENANTS.................................................................... 62
         9.1  Financial Statements.............................................................................. 62
         9.2  Certificates; Other Information................................................................... 63
         9.3  Payment of Obligations............................................................................ 65
         9.4  Conduct of Business and Maintenance of Existence.................................................. 65
         9.5  Maintenance of Property; Insurance................................................................ 65
         9.6  Inspection of Property; Books and Records; Discussions............................................ 66
         9.7  Notices  ......................................................................................... 66
         9.8  Environmental Laws................................................................................ 67
         9.9  Canadian Currency Risk............................................................................ 67
</TABLE>

                                     - ii -

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<TABLE>
<CAPTION>

                                                                                                               Page
                                                                                                               ----
<S>                                                                                                              <C>
         9.10  Inventory........................................................................................ 67
         9.11  Field Analyses................................................................................... 67

SECTION 10.            NEGATIVE COVENANTS....................................................................... 67
         10.1  Financial Condition Covenants.................................................................... 68
         10.2  Limitation on Indebtedness....................................................................... 68
         10.3  Limitation on Liens.............................................................................. 69
         10.4  Limitation on Guarantee Obligations.............................................................. 71
         10.5  Limitation on Capital Expenditures............................................................... 72
         10.6  Limitation on Leases............................................................................. 73
         10.7  Limitation on Fundamental Changes................................................................ 73
         10.8  Limitation on Sale of Assets..................................................................... 75
         10.9  Limitation on Restricted Payments................................................................ 76
         10.10  Limitation on Investments, Loans and Advances................................................... 78
         10.11  Limitation on Modifications of Debt Instruments and Other Agreements;
                       Optional Payments of Debt Instruments.................................................... 79
         10.12  Limitation on Transactions with Affiliates...................................................... 80
         10.13  Limitation on Changes in Fiscal Year............................................................ 80
         10.14  Limitation on Negative Pledge Clauses........................................................... 81
         10.15  Limitation on Lines of Business................................................................. 81
         10.16  Payments in Respect of Accounts................................................................. 81
         10.17  Maintenance of Bank Accounts.................................................................... 81
         10.18  Restriction on Cash Balances.................................................................... 82
         10.19  Subsidiaries.................................................................................... 82
         10.20  Amendments to Charter and By-Laws............................................................... 82
         10.21  Limitation on Dividend Restrictions............................................................. 82

SECTION 11.            GUARANTEES............................................................................... 82
         11.1  Guarantees....................................................................................... 82
         11.2  No Subrogation, Contribution, Reimbursement or Indemnity......................................... 83
         11.3  Modification of Obligations...................................................................... 83
         11.4  Waiver  ......................................................................................... 84
         11.5  Reinstatement.................................................................................... 85
         11.6  Payment of Obligations........................................................................... 85

SECTION 12.            EVENTS OF DEFAULT........................................................................ 85

SECTION 13.            THE ADMINISTRATIVE AGENT AND THE COLLATERAL
                       AGENT.................................................................................... 89
         13.1  Appointment...................................................................................... 89
         13.2  Delegation of Duties............................................................................. 89
         13.3  Exculpatory Provisions........................................................................... 89
         13.4  Reliance by Administrative Agent and Collateral Agent............................................ 90
         13.5  Notice of Default................................................................................ 90
</TABLE>

                                     - iii -

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<TABLE>
<CAPTION>
                                                                                                               Page
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         13.6  Non-Reliance on Administrative Agent, Collateral Agent and Other
                       Lenders.................................................................................. 91
         13.7  Indemnification.................................................................................. 91
         13.8  Administrative Agent and Collateral Agent........................................................ 92
         13.9  Successor Administrative Agent and Collateral Agent.............................................. 92

SECTION 14.            MISCELLANEOUS............................................................................ 93
         14.1  Amendments and Waivers........................................................................... 93
         14.2  [INTENTIONALLY OMITTED] ......................................................................... 94
         14.3  Notices ......................................................................................... 94
         14.4  No Waiver; Cumulative Remedies................................................................... 95
         14.5  Survival of Representations and Warranties....................................................... 95
         14.6  Payment of Expenses and Taxes.................................................................... 96
         14.7  Successors and Assigns; Participations and Assignments........................................... 98
         14.8  Adjustments; Set-off............................................................................. 101
         14.9  Designation under Senior Subordinated Notes...................................................... 101
         14.10  Counterparts.................................................................................... 101
         14.11  Severability.................................................................................... 102
         14.12  Integration..................................................................................... 102
         14.13  Separate Obligations............................................................................ 102
         14.14  Application of Proceeds of Collateral........................................................... 102
         14.15  GOVERNING LAW................................................................................... 103
         14.16  Submission to Jurisdiction; Waivers............................................................. 103
         14.17  Acknowledgements................................................................................ 104
         14.18  WAIVERS OF JURY TRIAL........................................................................... 104
         14.19  Confidentiality................................................................................. 105
</TABLE>


<TABLE>
<CAPTION>
SCHEDULES

<S>                   <C>
Schedule I            Addresses for Notices
Schedule II           Commitments
Schedule III          Subsidiaries and Guarantors
Schedule V            Indebtedness
Schedule VI           Liens
Schedule VII          Guarantee Obligations
Schedule VIII         Existing Letters of Credit
Schedule IX           Borrowers' Accounts
Schedule X            Administrative Agent's Account
</TABLE>


                                     - iv -

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<TABLE>
<CAPTION>

EXHIBITS

<S>                   <C> 
Exhibit A             Form of Revolving Credit Note
Exhibit B             Form of Swing Line Note
Exhibit C             Form of Guarantee
Exhibit D             Form of GSLMC Security Agreement
Exhibit E             Form of NACC Security Agreement
Exhibit F             Form of NASC Security Agreement
Exhibit G             Form of Lock Box Agreement
Exhibit H             Form of Assignment and Acceptance
Exhibit I-1           Form of Landlord's Letter
Exhibit I-2           Form of Warehousemen Notice
Exhibit J             Form of Borrowing Base Certificate
Exhibit K             [INTENTIONALLY OMITTED]
Exhibit L             Stockholders' Agreement
Exhibit M             Tax Sharing Agreement
</TABLE>

                                      - v -

<pg$pcn>
            CREDIT AND GUARANTEE AGREEMENT, dated as of October 15, 1993, as
amended and restated as of February 27, 1997, among:

(a)   NORTH AMERICAN CHEMICAL COMPANY, a Delaware corporation ("NACC"),
      NORTH AMERICAN SALT COMPANY, a Delaware corporation ("NASC"), GREAT
      SALT LAKE MINERALS CORPORATION, a Delaware corporation ("GSLMC")
      (collectively, the "Borrowers");

(b)   HARRIS CHEMICAL NORTH AMERICA, INC., a Delaware corporation, as
      guarantor (in such capacity, "HCNA");

(c)   the several banks and other financial institutions from time to time 
      parties to this Agreement (the "Lenders"); and

(d)   GENERAL ELECTRIC CAPITAL CORPORATION, a New York corporation ("GE
      Capital"), as collateral agent for the Lenders hereunder (in such
      capacity, the "Collateral Agent") and as administrative agent for the
      Lenders hereunder (in such capacity, the "Administrative Agent").


                              W I T N E S S E T H :


            WHEREAS, the Borrowers and HCNA have entered into the Credit and
Guarantee Agreement, dated as of October 15, 1993, as amended and restated as of
July 10, 1995, as further amended prior to the date hereof (as so amended, the
"Existing Credit Agreement") with Barclays Bank PLC and GE Capital, as
co-agents, GE Capital, as collateral agent, Barclays Bank PLC, as administrative
agent, and the several banks and other financial institutions parties thereto;

            WHEREAS, the parties hereto have agreed to amend and restate the
Existing Credit Agreement as provided herein on the terms set forth in this
Agreement, which Agreement shall become effective upon the satisfaction of
certain conditions precedent set forth herein; and

            WHEREAS, it is the intent of the parties hereto that this Agreement
not constitute a novation of the obligations and liabilities existing under the
Existing Credit Agreement or evidence repayment of all or any of such
obligations and liabilities and that this Agreement amend and restate in its
entirety the Existing Credit Agreement and re-evidence the obligations of the
Borrowers outstanding thereunder;

            NOW, THEREFORE, in consideration of the above premises, the parties
hereto hereby agree that on the Closing Date (as 

<pg$pcn>
defined below) the Existing Credit Agreement shall be amended and restated to
read in its entirety as follows:

      SECTION 1.        DEFINITIONS


            1.1 Defined Terms. As used in this Agreement, the following terms
shall have the following meanings:

            "Acceleration Date":  as defined in Section 12.

            "Accounts":  as defined in "Eligible Receivables".

            "Adjusted Fixed Charges": for any period, with respect to HCNA and
      its Subsidiaries, the sum of (a) Capital Expenditures made during such
      period (other than Major Project Capital Expenditures, except to the
      extent the same are made with Transferred HCNA Amounts), provided that,
      for purposes of calculating "Adjusted Fixed Charges", the amount of
      Capital Expenditures actually made by HCNA and its Subsidiaries during
      HCNA's fiscal year 1997 shall be adjusted by (i) increasing such amount by
      $3,000,000 in the first fiscal quarter, (ii) increasing such amount by
      $2,000,000 in the second fiscal quarter, (iii) decreasing such amount by
      $2,000,000 in the third fiscal quarter, and (iv) decreasing such amount by
      $3,000,000 in the fourth fiscal quarter, and (b) the greater of scheduled
      and (without duplication of payments scheduled for prior periods) actual
      payments of principal of Indebtedness (other than Indebtedness hereunder
      and under the Canadian Credit Agreement and other than any such scheduled
      or actual payments financed with the proceeds of (i) extraordinary asset
      sales, (ii) the issuance of Capital Stock, (iii) the issuance of
      Indebtedness having no scheduled amortization prior to the first
      anniversary of the incurrence thereof and a longer Weighted Average Life
      to Maturity than the Indebtedness being repaid or prepaid or (iv) the
      issuance of Indebtedness incurred in accordance with subsection 10.2(g) in
      order to refinance Indebtedness of NACC with respect to North American
      Terminals, Inc.'s San Diego terminal in a principal amount not exceeding
      $8,000,000), determined on a consolidated basis in accordance with GAAP,
      for such period.

            "Adjusted Operating Income": for any period, consolidated income
      before taxes on or measured by net income or gain (as determined in
      accordance with GAAP) for such period:

      (a)   minus, to the extent included in the computation of consolidated
            income before taxes for such period, the sum of (i) all
            extraordinary gains of HCNA and its Subsidiaries recorded during
            such period (as determined for HCNA and its Subsidiaries on a
            consolidated basis 


                                      -2-

<pg$pcn>
            in accordance with GAAP) and (ii) all non-cash foreign exchange
            gains of HCNA and its Subsidiaries recorded during such period (as
            determined for HCNA and its Subsidiaries on a consolidated basis in
            accordance with GAAP);

      (b)   minus, to the extent not deducted in the computation of consolidated
            income before taxes for such period, all taxes on or measured by
            income (including, without limitation, withholding taxes) paid in
            cash by HCNA and its Subsidiaries with respect to such period or
            payable in cash by HCNA and its Subsidiaries within twelve months
            following the last day of such period with respect thereto;

      (c)   minus, capitalized interest in respect of capital expenditures for
            such period;

      (d)   plus, to the extent not included in the calculation of consolidated
            income before taxes, all tax refunds actually received in cash by
            HCNA and its Subsidiaries during such period (whether or not
            deducted in such period); and

      (e)   plus, to the extent deducted in the calculation of consolidated
            income before taxes for such period, the sum of (i) all
            extraordinary losses of HCNA and its Subsidiaries recorded during
            such period (as determined for HCNA and its Subsidiaries on a
            consolidated basis in accordance with GAAP), (ii) depreciation and
            amortization (including, without limitation, amortization of
            capitalized financing fees included in interest expense calculated
            in accordance with GAAP) of HCNA and its Subsidiaries during such
            period, (iii) all non- cash foreign exchange losses of HCNA and its
            Subsidiaries recorded during such period (as determined for HCNA and
            its Subsidiaries on a consolidated basis in accordance with GAAP),
            (iv) any non-cash interest related to the amortization of the ECMC
            Transaction and (v) without duplication of any of the foregoing, any
            other non-cash charges against income.

            "Administrative Agent":  as defined in the preamble.

            "Administrative Agent's Account": the account specified on Schedule
      X, or such other account as shall be specified by the Administrative Agent
      in a written notice to the Borrowers and the Lenders.

            "Affiliate": as to any Person, (a) any other Person (other than a
      Subsidiary) which, directly or indirectly, is in control of, is controlled
      by, or is under common control with, such Person or (b) any other Person
      (other than a Subsidiary) which is the vehicle for a joint venture in



                                      -3-

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      which such Person holds Capital Stock (or any Subsidiary of such joint
      venture vehicle). For purposes of this definition, "control" of a Person
      means the power, directly or indirectly, either to (x) vote 10% or more of
      the Voting Stock of such Person or (y) direct or cause the direction of
      the management and policies of such Person, whether by contract or
      otherwise; provided, however, that in no event shall any of Chase
      Manhattan Capital Corporation, The Prudential Insurance Company of America
      or Prudential Reinsurance Company be deemed to be Affiliates of HCNA and
      its Subsidiaries with respect to any transaction occurring in the ordinary
      course of business of HCNA and its Subsidiaries.

            "Affiliates Guarantee": the Guarantee executed and delivered by
      certain Affiliates of the Borrowers, substantially in the form of Exhibit
      C, as the same may be amended, restated, supplemented or otherwise
      modified from time to time.

            "Aggregate Commitment": $130,000,000, as such amount may be reduced
      from time to time in accordance with the terms of this Agreement, provided
      that for the purposes of (i) the definition of "Aggregate Required
      Lenders" and (ii) the definition of "Commitment Percentage" when such
      definition is used in the definition of "Majority Lenders" or "Required
      Lenders", "Aggregate Commitment" shall mean the aggregate amount of the
      Commitments of all Lenders other than Non-Responding Lenders.

            "Aggregate Outstanding Extensions of Credit": as to any Lender with
      respect to a Borrower at any time, an amount equal to the sum of (a) the
      aggregate principal amount of all then outstanding Revolving Credit Loans
      made by such Lender to such Borrower and (b) such Lender's Commitment
      Percentage of the aggregate amount of L/C Obligations and Swing Line Loans
      then outstanding to such Borrower; provided that, only for purposes of
      calculating the commitment fees owing pursuant to subsection 6.1, the
      aggregate amount of Swing Line Loans then outstanding shall be deemed to
      be held entirely by the Swing Line Lender and not by any other Lender.

            "Aggregate Required Lenders": at any time, Lenders hereunder and
      Lenders under (and as defined in) the Canadian Credit Agreement which, in
      the aggregate, have Commitments hereunder and Commitments thereunder (as
      defined in the Canadian Credit Agreement) aggregating at least 66-2/3% of
      the sum of the Aggregate Commitment hereunder and the Aggregate Commitment
      thereunder (and as defined therein).

            "Aggregate U.S. Borrowing Base Availability": at any time, the sum
      of each Borrowing Base then in effect with respect to each Borrower.



                                      -4-

<pg$pcn>
            "Agreement": this Credit and Guarantee Agreement, as the same may be
      amended, restated, supplemented or otherwise modified from time to time.

            "ANSAC":  American National Soda Ash Corporation.

            "Application": an application, in such form as the relevant L/C
      Issuer may specify from time to time, requesting such L/C Issuer to open a
      Letter of Credit.

            "Assignee":  as defined in subsection 14.7(c).

            "Assignment and Acceptance":  as defined in subsection 14.7(c).

            "Available Commitment": as to any Lender, at any time, an amount
      equal to the excess, if any, of (a) such Lender's Commitment over (b) such
      Lender's Aggregate Outstanding Extensions of Credit to all Borrowers.

            "Base Rate": for any day, a rate per annum equal to the greatest of
      (a) the Prime Rate in effect on such day, (b) the CP Rate in effect on
      such day and (c) the Federal Funds Effective Rate in effect on such day
      plus 0.50%. For purposes hereof: "Prime Rate" shall mean, for any day, the
      per annum base rate on corporate loans posted by at least 75% of the
      nation's 30 largest banks as most recently reported in the "Money Rates"
      column (or any comparable successor column) of The Wall Street Journal on
      or prior to such day, provided that if The Wall Street Journal changes its
      method of reporting such rate, the Prime Rate shall be the highest rate
      per annum reported by Bank of America National Trust and Savings
      Association or The First National Bank of Boston as its "prime rate" or
      "reference rate"; "CP Rate" shall mean, for any day, the per annum
      commercial paper rate for 90-day commercial paper placed directly by GE
      Capital as most recently reported in the "Money Rates" column (or any
      comparable successor column) of The Wall Street Journal on or prior to
      such day, provided that if The Wall Street Journal ceases to publish such
      rate, the CP Rate shall be the published rate for 90-day dealer placed
      commercial paper (sold through dealers by major corporations) as
      determined by the Administrative Agent; and "Federal Funds Effective Rate"
      shall mean, for any day, the weighted average of the rates on overnight
      federal funds transactions with members of the Federal Reserve System
      arranged by federal funds brokers, as published on the next succeeding
      Business Day by the Federal Reserve Bank of New York, or, if such rate is
      not so published for any day which is a Business Day, the average of the
      quotations for the day of such transactions received by the Administrative
      Agent from three federal funds brokers of recognized standing selected by
      it. If for any reason the Administrative Agent shall have determined
      (which 



                                      -5-

<pg$pcn>
      determination shall be conclusive absent manifest error) that it is unable
      to ascertain the CP Rate or the Federal Funds Effective Rate for any
      reason, including the inability or failure of the Administrative Agent to
      obtain sufficient quotations in accordance with the terms thereof, the
      Base Rate shall be determined without regard to clause (b) or (c), as the
      case may be, of the first sentence of this definition, as appropriate,
      until the circumstances giving rise to such inability no longer exist. Any
      change in the Base Rate due to a change in the Prime Rate, the CP Rate or
      the Federal Funds Effective Rate shall be effective as of the opening of
      business on the effective day of such change in the Prime Rate, the CP
      Rate or the Federal Funds Effective Rate, respectively.

            "Base Rate Loans": Loans bearing interest at a rate based upon the
      Base Rate (including, without limitation, Swing Line Loans).

            "Borrowers":  as defined in the preamble to this Agreement; each, a
      "Borrower".

            "Borrowing Base": with respect to any Borrower at any date, the
      amount equal to the sum of (a) 85% of Eligible Receivables of such
      Borrower and (b) 50% of Eligible Inventory of such Borrower (provided that
      during the period from July 1 of each year to January 31 of the next
      succeeding year, the Borrowing Base with respect to NASC shall be the sum
      of (a) 85% of Eligible Receivables of NASC and (b) 65% of Eligible
      Inventory of NASC). The Borrowing Base shall be determined from time to
      time by the Collateral Agent by reference to the Borrowing Base
      Certificate then most recently delivered to it; provided that the
      information contained in such Borrowing Base Certificate shall not be
      conclusive in calculating the Borrowing Base and, after consultation with
      the relevant Borrower (and, in the case of any change in the method of
      calculating the Borrowing Base, upon reasonable notice to the relevant
      Borrower), the Collateral Agent shall be entitled to adjust (in accordance
      with the standards set forth in the definitions of the terms "Eligible
      Inventory" and "Eligible Receivables") the amounts and other information
      contained therein to the extent that the Collateral Agent believes in its
      reasonable credit judgment that such adjustment is appropriate to reflect
      the then current amounts of Eligible Inventory and Eligible Receivables.

            "Borrowing Base Certificate": with respect to each Borrower, a
      certificate, substantially in the form of Exhibit J, delivered pursuant to
      subsection 9.2(e).

            "Borrowing Date": any Business Day specified in a notice pursuant to
      subsection 2.5 as a date on which a Borrower requests the Lenders to make
      Loans hereunder.



                                      -6-

<pg$pcn>
            "Business":  as defined in subsection 7.16.

      "Business Day": a day other than a Saturday, Sunday or other day on which
commercial banks in New York City (or, in the case of matters relating to
Eurodollar Loans, New York City or London, England) are authorized or required
by law to close.

            "Canadian Credit Agreement": the Credit and Guarantee Agreement,
      dated as of October 15, 1993, as amended and restated as of February 27,
      1997, among Sifto, the Subsequent Borrower (if any) designated thereunder,
      the guarantors parties thereto, the banks and other financial institutions
      from time to time parties thereto, the Collateral Agent named therein and
      General Electric Capital Canada Inc., as administrative agent, as the same
      may be further amended, restated, supplemented or otherwise modified from
      time to time.

            "Canadian Lender": any "Lender" under (and as defined in) the
      Canadian Credit Agreement; collectively the "Canadian Lenders".

            "Capital Expenditures": of any Person, expenditures by such Person
      in respect of the purchase or other acquisition of fixed or capital assets
      having a useful life of greater than one year (excluding (a) any such
      asset acquired in connection with normal replacement and maintenance
      programs properly charged to current operations as an expense deducted in
      determining Consolidated Net Income, (b) payments on account of Financing
      Leases, (c) to the extent otherwise included therein, interest capitalized
      during such period in accordance with GAAP, (d) expenditures of proceeds
      of insurance, condemnation awards or indemnity payments to the extent that
      such proceeds are expended or committed to be expended within 270 days
      after receipt thereof, or in respect of which expenditures were previously
      made, for equipment, fixed assets, real property or improvements, or for
      replacements or substitutions therefor or additions thereto, in each case
      as certified in reasonable detail to the Administrative Agent by a
      Responsible Officer of HCNA (it being agreed that (x) to the extent such
      proceeds are not expended or committed to be expended within 270 days
      after receipt thereof in accordance with this clause (d) or (y) proceeds
      are not received with respect to expenditures previously made and not
      included in the calculation of "Capital Expenditures" in anticipation of
      receiving such proceeds within 270 days of the initial expenditure, in
      each case, such amount shall be included in the calculation of "Capital
      Expenditures" thereafter) and (e) expenditures to the extent funded by
      joint venture partners of HCNA or any of its Subsidiaries) which would, in
      accordance with GAAP, be set forth as capital expenditures on a
      consolidated statement of cash flows of such Person, including, in any



                                      -7-

<pg$pcn>
      event, investments by HCNA and its Subsidiaries in excess of $10,000,000
      in the aggregate made subsequent to December 28, 1996 by such Person in
      joint ventures in which HCNA or any of its Subsidiaries holds Capital
      Stock pursuant to subsection 10.10(d). For the purposes of clause (d) of
      this definition, proceeds shall be deemed to be committed to be expended
      only to the extent that a written contract or a firm purchase order has
      been executed and delivered requiring expenditure of such proceeds.

            "Capital Stock": any and all shares, interests, participations or
      other equivalents (however designated) of capital stock of a corporation,
      any and all equivalent ownership interests in a Person (other than a
      corporation) and any and all warrants or options to purchase any of the
      foregoing.

            "Cash Collateral Account":  as defined in subsection 3.3(a).

            "Cash Equivalents": (a) with respect to HCNA and its Subsidiaries
      (including, without limitation, the members of the Sifto Group), (i)
      securities issued or directly and fully guaranteed or insured by the
      United States Government or any agency or instrumentality thereof having
      maturities of not more than twelve months from the date of acquisition,
      (ii) time deposits and certificates of deposit having maturities of not
      more than six months from the date of acquisition of the Administrative
      Agent or any commercial bank having capital and surplus in excess of
      $500,000,000, which has, or the holding company of which has, a commercial
      paper rating meeting the requirements specified in clause (iv) below,
      (iii) repurchase obligations with a term of not more than seven days for
      underlying securities of the types described in clause (i) entered into
      with any bank meeting the qualifications specified in clause (ii) above,
      and (iv) commercial paper rated at least A-1 or the equivalent thereof by
      Standard & Poor's Ratings Services or P-1 or the equivalent thereof by
      Moody's Investors Service, Inc. and in either case maturing within three
      months after the date of acquisition; and

            (b) with respect to members of the Sifto Group, (i) securities
      issued or directly and fully guaranteed or insured by the Canadian
      Government or any agency or instrumentality thereof having maturities of
      not more than twelve months from the date of acquisition and (ii)
      commercial paper rated at least R1 (high), R1 (middle) or R1 (low) or the
      equivalent by Dominion Bond Rating Service, Inc. or A1+ or the equivalent
      by CBRS Inc. and in either case maturing within three months after the
      date of acquisition.



                                      -8-

<pg$pcn>
            "Closing Date": the date (which date shall be prior to or on
      February 28, 1997) on which the conditions precedent set forth in
      subsection 8.1 shall be satisfied.

            "Code": the Internal Revenue Code of 1986, as amended from time to
      time.

            "Collateral": all assets of the Loan Parties, now owned or
      hereinafter acquired, upon which a Lien is purported to be created by any
      Security Document.

            "Collateral Agent":  as defined in the preamble.

            "Collateral Cash Equivalents": any cash equivalents held in a Cash
      Collateral Account.

            "Commercial Letter of Credit":  as defined in subsection 3.1(b).

            "Commitment": as to any Lender, the obligation of such Lender to
      make Revolving Credit Loans to and/or issue or participate in Letters of
      Credit, as the case may be, issued on behalf of the Borrowers hereunder in
      an aggregate principal and/or face amount at any one time outstanding not
      to exceed the amount set forth opposite such Lender's name on Schedule II
      under the heading "Commitments"; as to all Lenders collectively, the
      "Commitments".

            "Commitment Percentage": as to any Lender at any time, the
      percentage which such Lender's Commitment then constitutes of the
      Aggregate Commitment; provided that, at any time after the Commitments
      shall have expired or terminated, the Commitment Percentage of a Lender
      instead shall be the percentage which the Aggregate Outstanding Extensions
      of Credit of such Lender to all Borrowers constitutes of the Aggregate
      Outstanding Extensions of Credit of all Lenders to all Borrowers.

            "Commitment Period": the period from and including the Closing Date
      to but not including the Termination Date or such earlier date on which
      the Commitments shall terminate as provided herein.

            "Commonly Controlled Entity": an entity, whether or not
      incorporated, which is under common control with a Borrower within the
      meaning of Section 4001 of ERISA or is part of a group which includes a
      Borrower and which is treated as a single employer under Section 414 of
      the Code.

            "Consolidated EBITDA": for any period, with respect to HCNA and its
      Subsidiaries on a consolidated basis, an amount equal to consolidated
      income before taxes on or measured by net income or gain (as determined in
      accordance with GAAP) for such period:



                                      -9-

<pg$pcn>
      (a)   minus, to the extent included in the computation of consolidated
            income before taxes, interest income, income or gain from
            extraordinary items for such period and non-cash foreign exchange
            gains, all determined on a consolidated basis for HCNA and its
            Subsidiaries in accordance with GAAP; and

      (b)   plus, to the extent deducted in the computation of consolidated
            income before taxes, the sum of (i) Consolidated Interest Expense
            (including, without limitation, interest expense imputed in respect
            of any Financing Leases), (ii) expense or loss from extraordinary
            items for such period, (iii) depreciation and other non-cash charges
            against income for such period, (iv) amortized debt discount for
            such period and (v) non-cash foreign exchange losses, all determined
            on a consolidated basis for HCNA and its Subsidiaries in accordance
            with GAAP.

            "Consolidated Free Cash Flow": for any period, Consolidated Net
      Income (a) plus (to the extent deducted in determining Consolidated Net
      Income) the sum of (i) depreciation and other non-cash charges against
      income for such period and (ii) the provision for income taxes for such
      period, and (b) minus the sum of (i) the amount of Permitted Capital
      Expenditures (other than Major Project Capital Expenditures) actually made
      during such period, (ii) income taxes paid or payable in cash for such
      period and (iii) scheduled principal payments paid or payable on a
      consolidated basis with respect to such period on account of Indebtedness.

            "Consolidated Funded Debt": at any date, the amount of all
      Indebtedness for borrowed money of HCNA and its Subsidiaries, determined
      on a consolidated basis in accordance with GAAP.

            "Consolidated Interest Expense": for any period, interest expense of
      HCNA and its Subsidiaries for such period (excluding the effects of
      capitalizing interest with respect to capital expenditures, any
      amortization of capitalized finance fees and any non-cash interest related
      to the amortization of the ECMC Transaction), determined on a consolidated
      basis in accordance with GAAP.

            "Consolidated Lease Expense": for any period, the aggregate rental
      obligations of HCNA and its Subsidiaries taken as a whole (determined on a
      consolidated basis in accordance with GAAP) which are payable in respect
      of such period under leases of real and/or personal property (net of
      income from subleases thereof, but including taxes, insurance, maintenance
      and similar expenses which the lessee is obligated to pay under the terms
      of said leases), whether or not such obligations are reflected as
      liabilities or 



                                      -10-

<pg$pcn>
      commitments on a consolidated balance sheet of HCNA and its Subsidiaries
      or in the notes thereto, excluding, however, obligations under Financing
      Leases.

            "Consolidated Net Income": for any period, the consolidated net
      income (or deficit) of HCNA and its Subsidiaries taken as a whole,
      determined in accordance with GAAP; provided that there shall be excluded
      (a) the income (or deficit) of any Person accrued prior to the date it
      becomes a Subsidiary or is merged into or consolidated with HCNA or any
      Subsidiary, (b) the income (or deficit) of any Person (other than a
      Subsidiary) in which HCNA or any Subsidiary has an ownership interest,
      except to the extent that any such income has been actually received by
      HCNA or such Subsidiary in the form of dividends or similar distributions,
      (c) the undistributed earnings of any Subsidiary to the extent that the
      declaration or payment of dividends or similar distributions by such
      Subsidiary is not at the time permitted by the terms of any Contractual
      Obligation or Requirement of Law applicable to such Subsidiary, (d) any
      restoration to income of any contingency reserve, except to the extent
      that provision for such reserve was made out of income accrued during such
      period, (e) any aggregate net gain (but not any aggregate net loss) during
      such period arising from the sale, exchange or other disposition of
      capital assets (such term to include all fixed assets, whether tangible or
      intangible, all inventory sold in conjunction with the disposition of
      fixed assets and all securities), (f) any write-up of any asset, (g) any
      net gain from the collection of the proceeds of life insurance policies,
      (h) any net gain arising from the acquisition of any securities, or the
      extinguishment, under GAAP, of any Indebtedness of HCNA or any Subsidiary,
      (i) in the case of a successor to HCNA by consolidation or merger or as a
      transferee of its assets, any earnings of the successor corporation prior
      to such consolidation, merger or transfer of assets, and (j) any deferred
      credit representing the excess of equity in any Subsidiary at the date of
      acquisition over the cost of the investment in such Subsidiary.

            "Contractual Obligation": as to any Person, any provision of any
      security issued by such Person or of any agreement, instrument or other
      undertaking to which such Person is a party or by which it or any of its
      property is bound.

            "Debt Purchase Conditions": at any date with respect to any purchase
      of Senior Secured Notes or Sifto Notes in reliance upon the provisions of
      subsection 10.11(c), the simultaneous satisfaction of each of the
      following conditions:



                                      -11-

<pg$pcn>
                  (a)  no Default or Event of Default shall have occurred and be
            continuing or would result therefrom;

                  (b) HCNA would have been in compliance with the Fixed Charge
            Coverage Ratio required pursuant to subsection 10.1(b) for the
            period of four consecutive fiscal quarters ending on the last day of
            the most recent fiscal period with respect to which HCNA shall have
            delivered financial statements pursuant to subsection 9.1(a) or
            9.1(b) if such purchase had been consummated on the last day of such
            fiscal period;

                  (c) the amount equal to (i) the average daily aggregate
            Borrowing Bases of all Borrowers hereunder plus (ii) the average
            daily aggregate Borrowing Bases of all Borrowers under (and as such
            terms are defined in) the Canadian Credit Agreement during the
            period of 90 consecutive days immediately preceding the date of such
            purchase shall have exceeded by at least $40,000,000 the amount
            equal to (x) the average daily Aggregate Outstanding Extensions of
            Credit to all Borrowers from all Lenders hereunder plus (y) the
            average daily Aggregate Outstanding Extensions of Credit to all
            Borrowers from all Lenders under (and as such terms are defined in)
            the Canadian Credit Agreement during such 90-day period; and

                  (d) there were no outstanding Loans hereunder and no
            outstanding Loans under (and as such term is defined in) the
            Canadian Credit Agreement immediately prior to and immediately
            following such purchase.

            "Default": any of the events specified in Section 12, whether or not
      any requirement for the giving of notice, the lapse of time, or both, or
      any other condition, has been satisfied.

            "Dollars" and "$": dollars in lawful currency of the United States
      of America.

            "ECMC Transaction": the amendment of that certain Emission Control
      Maintenance and Construction Agreement, dated as of December 15, 1988, by
      and between Kerr-McGee Chemical Corporation and ACE Cogeneration Company,
      as assigned to NACC pursuant to that certain Master Agreement, dated
      November 30, 1990, and as the same has been amended from time to time,
      providing, among other things, for the payment by ACE Cogeneration Company
      of not less than $22,000,000 in 1996.

            "Eligible Inventory": shall mean, with respect to the relevant
      Borrower, an amount equal to the book value of that inventory
      ("Inventory") of such Borrower, determined in accordance with GAAP
      consistently applied, valued on a last-



                                      -12-

<pg$pcn>
      in-first-out (LIFO) basis for NACC, provided, however, that the excess of
      LIFO cost basis over FIFO cost for NACC shall not exceed $5,000,000, and
      on a weighted average cost basis as to each other Borrower, excluding in
      each instance capitalized warehouse costs, and subject to internal control
      and management procedures applied in accordance with past practice, which
      conforms to the following additional criteria:

                  (a) the Inventory consists of items which are in good saleable
            condition (taking into account all applicable regulatory standards)
            and are not deteriorating in quality or obsolete;

                  (b) the Inventory is located at a facility owned or leased by
            a Borrower, or if the Inventory is stored at any location other than
            premises owned or leased by such Borrower, such Borrower has
            complied with all notice, reporting and filing requirements required
            by the relevant Security Documents, as the case may be, with respect
            to such Inventory to assure that the Collateral Agent has a
            perfected security interest in and access to such Inventory;
            provided that Inventory which is located at any location which is
            not owned by such Borrower shall be deemed to be Eligible Inventory
            only if either (i) a Landlord's Waiver has been obtained with
            respect to such location and remains in full force and effect or
            (ii) the Borrowing Base for such Borrower has been reduced by a
            reserve reasonably satisfactory to the Collateral Agent to provide
            for future obligations of the Borrower which will need to be
            satisfied in order to remove such Inventory from such location in an
            orderly manner over a reasonable period of time;

                  (c) the location at which such Inventory is stored holds
            Inventory which, in the absence of the provisions of this clause
            (c), would constitute Eligible Inventory having an aggregate book
            value of not less than $100,000;

                  (d) the Inventory is subject to the Collateral Agent's
            perfected security interest and no other Lien (other than Liens
            permitted under the Security Agreement to which such Borrower is a
            party) and is either (i) stored in the United States at a location
            covered by a currently effective UCC financing statement filed by
            the Collateral Agent, for the benefit of the holders of the
            Obligations, or (ii) stored in Canada, The Netherlands or Belgium at
            a location covered by a currently effective warehousing agreement,
            personal property security act filing or other evidence of the
            Collateral Agent's security interest, for the benefit of the holders
            of the 



                                      -13-

<pg$pcn>
            Obligations, and the Collateral Agent and the Administrative Agent
            reasonably believe that such financing statement or other evidence
            of security interest results in a perfected security interest which
            provides to the Collateral Agent substantially the same rights and
            benefits as would a perfected security interest under the laws of a
            jurisdiction located within the United States; provided, however,
            that to be classified as Eligible Inventory, the aggregate book
            value of Inventory which would in the absence of this provision,
            constitute Eligible Inventory at all locations in The Netherlands
            and Belgium shall be at least $1,000,000 in the aggregate and the
            aggregate book value of Inventory which would, in the absence of
            this provision, constitute Eligible Inventory at all locations in
            The Netherlands and Belgium shall not exceed $10,000,000 in the
            aggregate, provided, however, that such maximum amount shall be
            increased on each anniversary of the Closing Date by the amount of
            $2,500,000 but shall in no event exceed $15,000,000.

                  (e) the Inventory consists of goods at a location with respect
            to which the relevant Borrower maintains adequate perpetual or
            periodic records in accordance with past practice and, except to the
            extent incorporated into the finished product, does not consist of
            work in process (including, without limitation, bags and minerals),
            minerals which have not been removed from mines or lakes, returned
            or rejected goods, goods being returned to suppliers, spare parts,
            maintenance items, packaging materials, shipping materials, supplies
            or pallets;

                  (f) the Inventory consists of Inventory in transit, but only
            to the extent that (i) such Inventory is in transit from (A) a
            location in the United States or (in the case of NASC) Goderich,
            Ontario, owned or leased by a Borrower (including a Public Warehouse
            in the United States as to which the Collateral Agent has received a
            Warehousemen Notice) and, in any such case, as to which a financing
            statement or a filing under the Personal Property Security Act
            (Ontario) (as amended from time to time) has been filed to (B) a
            location in the United States owned or leased by a Borrower
            (including a Public Warehouse in the United States as to which the
            Collateral Agent has received a Warehousemen Notice) and, in any
            such case, as to which a financing statement has been filed, (ii)
            such goods are covered by non-negotiable documents of title which
            explicitly state on their face that such documents are
            "Non-Negotiable", (iii) in the case of NASC, such Inventory does not
            have a book value in excess of $5,000,000, provided, however, that
            such maximum amount shall be increased on each anniversary of the
            Closing 



                                      -14-

<pg$pcn>
         Date by the amount of $1,000,000, but shall in no event exceed
         $7,000,000, (iv) in the case of all Borrowers collectively, such
         Inventory does not have a book value in excess of $11,000,000,
         provided, however, that such maximum amount shall be increased on each
         anniversary of the Closing Date by the amount of $1,000,000 but shall
         in no event exceed $13,000,000, and (v) such Inventory which is located
         at any location which is not owned by such Borrower shall be deemed to
         be Eligible Inventory only if either (A) a Landlord's Waiver has been
         obtained with respect to such location and remains in full force and
         effect or (B) the Borrowing Base for such Borrower has been reduced by
         a reserve reasonably satisfactory to the Collateral Agent to provide
         for future obligations of the Borrower which will need to be satisfied
         in order to remove such Inventory from such location in an orderly
         manner over a reasonable period of time;

                  (g) the Inventory is not covered by a negotiable document of
            title;

                  (h)  the Inventory is not placed on consignment;

                  (i) if any of the Inventory consists of special order goods or
            bill and hold goods, reasonable reserves have been deducted in
            respect of such Inventory in determining the Borrowing Base;

                  (j) the Inventory is not prepaid and is insured in accordance
            with the requirements of the Loan Documents; and

                  (k) the Inventory is otherwise satisfactory to the Collateral
            Agent in its reasonable credit judgment.

            "Eligible Receivables": shall mean, with respect to the relevant
      Borrower, an amount equal to the book value of those accounts receivable
      ("Accounts") of such Borrower, determined in accordance with GAAP
      consistently applied and subject to internal control and management
      procedures applied in accordance with past practice, which conform to each
      of the following additional criteria:

                  (a) the Account is not evidenced by chattel paper or an
            instrument or security of any kind, unless such chattel paper or
            instrument or security has been duly endorsed to and is in the
            possession of the Collateral Agent, for the benefit of the holders
            of the Obligations;

                  (b) if the chief executive offices of the account debtor are
            located outside the United States, either:



                                      -15-

<pg$pcn>
                            (i) the chief executive offices of the account
                  debtor are located in Canada and the Collateral Agent then
                  holds a first priority security interest in the Account and
                  such security interest is perfected under the laws of both the
                  United States and Canada;

                           (ii) the Account is payable in the full amount of the
                  face value of the Account in Dollars and is supported by an
                  irrevocable letter of credit issued by a United States
                  financial institution (or a foreign financial institution
                  confirmed by a United States financial institution) reasonably
                  satisfactory to the Collateral Agent and in form and substance
                  reasonably acceptable to the Collateral Agent, and the letter
                  of credit and all documents required to draw thereon have been
                  delivered to (and the rights of the relevant Borrower therein
                  have been assigned to) the Collateral Agent for the benefit of
                  the holders of the Obligations; or

                          (iii) in the case of non-United States Accounts which
                  do not satisfy the requirements of clause (i) or (ii) of this
                  paragraph (b), such Accounts shall be deemed to be Eligible
                  Accounts only to the extent that the aggregate amount thereof
                  owing to all Borrowers does not exceed an amount equal to the
                  lesser of $8,000,000 and 15% of the aggregate Eligible
                  Receivables of all Borrowers (calculated without regard to
                  Accounts which are deemed to be Eligible Receivables pursuant
                  to the provisions of this clause (iii));

                  (c) the Account is not subject to any Lien whatsoever (other
            than Liens permitted under the Security Agreement to which such
            Borrower is a party), except for the Collateral Agent's perfected
            security interest, and a currently effective UCC financing statement
            filed by the Collateral Agent against such Borrower covering such
            Account is on file and all other filings, registrations and
            recordings of the Security Documents shall have been properly filed,
            registered and recorded in all offices of all jurisdictions where
            such filing, registration or recording is necessary or advantageous
            to create, perfect and maintain the security interests granted in
            favor of the Collateral Agent;

                  (d) the Account arises solely from the sale of goods or the
            performance of services by such Borrower in the ordinary course of
            business and is documented by an invoice in a customary form used by
            such Borrower and reasonably acceptable to the Collateral Agent and



                                      -16-

<pg$pcn>
            (i) is due less than ninety (90) days (or, in the case of Accounts
            payable by ANSAC, one hundred twenty (120) days) after the date of
            such invoice or (ii) is covered by an irrevocable letter of credit
            of a type described in clause (b) (ii) above;

                  (e) the Account has not remained unpaid later than the earlier
            to occur of (i) sixty (60) days past the due date specified in the
            applicable invoice and (ii) ninety (90) days (or, in the case of
            Accounts payable by ANSAC, one hundred twenty (120) days) past the
            original invoice date;

                  (f) the account debtor is not insolvent or the subject of any
            bankruptcy or insolvency proceeding of any kind and the Collateral
            Agent has not notified such Borrower that the creditworthiness of
            such account debtor is unacceptable to the Collateral Agent in its
            reasonable business judgment;

                  (g) the Account does not arise out of transactions with any
            employee, officer, director, stockholder or other Affiliate of HCNA
            or any of its Subsidiaries (it being understood that ANSAC and any
            Person that holds, directly or indirectly, at least a 20% minority
            ownership interest in the Soda Ash Subsidiary as part of a soda ash
            joint venture designed to benefit from the exempt sale provisions of
            the ANSAC rules shall not be deemed to be Affiliates of HCNA or any
            of its Subsidiaries for purposes of this clause (g));

                  (h) (i) in the case of Accounts due from an account debtor
            (other than ANSAC) whose total indebtedness to such Borrower on
            Accounts then exceeds 25% of the aggregate amount of all of such
            Borrower's Eligible Receivables, such Accounts shall be deemed to be
            ineligible to the extent that they exceed such percentage, (ii) in
            the case of Accounts due from an account debtor (other than ANSAC)
            whose total indebtedness to all Borrowers on Accounts then exceeds
            5% of the aggregate amount of all Eligible Receivables of all
            Borrowers, such Accounts shall be deemed to be ineligible (with such
            ineligibility being applied ratably to the Accounts owing to the
            Borrowers from such account debtor) to the extent that they exceed
            such percentage and (iii) in the case of Accounts due from ANSAC,
            such Accounts shall be deemed ineligible to the extent that they
            exceed 25% of the aggregate amount of Eligible Receivables of all
            Borrowers (with such ineligibility being applied ratably to the
            Accounts owing to the Borrowers from ANSAC);



                                      -17-

<pg$pcn>
                  (i) the Account is not due from an account debtor whose
            indebtedness to such Borrower on Accounts which are more than 60
            days past due (or, in the case of Accounts owing from account
            debtors located outside of the United States or Canada, 30 days past
            due) exceeds 50% of such account debtor's total indebtedness to such
            Borrower;

                  (j)  the Account is payable to such Borrower;

                  (k) the Account does not arise out of a bill and hold sale
            prior to the shipment thereof and, if the Account arises out of a
            sale to any Person to which such Borrower is indebted (other than
            any Governmental Authority with respect to which none of such
            indebtedness owing by such Borrower is then due and payable), the
            amount of such indebtedness is deducted in determining the Borrowing
            Base;

                  (l) the Account is net of any returns, discounts, claims,
            credits and allowances and net of reserves with respect to Accounts
            for rebates, billbacks, foreign exchange losses, and net of all
            other reserves established by such Borrower with respect to
            Accounts, other than bad debt reserves;

                  (m) the Account is not subject to any defense, counterclaim or
            setoff, other than with respect to taxes not then due and payable to
            Governmental Authorities which are account debtors;

                  (n) the Account does not arise with respect to goods which are
            delivered on a cash-on-delivery basis or placed on consignment,
            guaranteed sale or other terms by reason of which the payment by the
            account debtor may be conditional;

                  (o) the Account is one upon which (i) such Borrower's right to
            receive payment is absolute and is not contingent upon the
            fulfillment of any condition whatsoever and (ii) such Borrower is
            able to bring suit or otherwise enforce its remedies against the
            account debtor through judicial process; and

                  (p) the Account is otherwise satisfactory to the Collateral
            Agent in its reasonable credit judgment.

            "Environmental Compliance Program": as defined in subsection 9.2(f).

            "Environmental Laws": any and all foreign, Federal, state, local or
      municipal laws, rules, orders, regulations, statutes, ordinances, codes,
      decrees, requirements of any Governmental Authority or other Requirements
      of Law 



                                      -18-

<pg$pcn>
      (including common law) regulating, relating to or imposing liability or
      standards of conduct concerning protection of human health or the
      environment, as from time to time in effect.

            "ERISA": the Employee Retirement Income Security Act of 1974, as
      amended from time to time.

            "Eurocurrency Reserve Requirements": for any day as applied to a
      Eurodollar Loan, the aggregate (without duplication) of the rates
      (expressed as a decimal fraction) of reserve requirements in effect on
      such day (including, without limitation, basic, supplemental, marginal and
      emergency reserves under any regulations of the Board of Governors of the
      Federal Reserve System or other Governmental Authority having jurisdiction
      with respect thereto) dealing with reserve requirements prescribed for
      eurocurrency funding (currently referred to as "Eurocurrency Liabilities"
      in Regulation D of such Board) maintained by a member bank of such System;
      provided that a Lender shall be deemed to be subject to Eurocurrency
      Reserve Requirements only from and after the date that such Lender has
      certified to the Borrowers that a Governmental Authority has imposed any
      Eurocurrency Reserve Requirements subsequent to the Closing Date which
      increase the cost to such Lender of making or maintaining Eurodollar Loans
      hereunder.

            "Eurodollar Base Rate": with respect to each day during each
      Interest Period pertaining to a Eurodollar Loan, the rate of interest
      determined on the basis of the rate per annum for deposits in Dollars for
      a period equal to such Interest Period commencing on the first day of such
      Interest Period appearing on Page 3750 of the Telerate Screen as of 11:00
      A.M., London time, two Business Days prior to the beginning of such
      Interest Period; provided, that in the event that such rate does not
      appear on Page 3750 of the Telerate Screen (or otherwise on the Telerate
      Service), the Eurodollar Base Rate shall be determined by reference to
      such other publicly available service for displaying eurodollar rates as
      shall be determined by the Administrative Agent.

            "Eurodollar Loans": Loans bearing interest at a rate which is based
      upon the Eurodollar Rate.

            "Eurodollar Rate": with respect to each day during each Interest
      Period pertaining to a Eurodollar Loan, a rate per annum determined for
      such day in accordance with the following formula (rounded upward to the
      nearest 1/100th of 1%):

                              Eurodollar Base Rate
                   -------------------------------------------
                    1.00 - Eurocurrency Reserve Requirements


                                      -19-

<pg$pcn>
            "Event of Default": any of the events specified in Section 12,
      provided that any requirement for the giving of notice, the lapse of time,
      or both, or any other condition, has been satisfied.

            "Existing Credit Agreement":  as defined in the preamble.

            "Financing Lease": any lease of property, real or personal, the
      obligations of the lessee in respect of which are required in accordance
      with GAAP to be capitalized on a balance sheet of the lessee or disclosed
      in a footnote thereto.

            "Fixed Charge Coverage Ratio": for any Person for any period, the
      ratio of (i) Adjusted Operating Income plus, for purposes of subsection
      10.1(b) only, in the case of any period which ends on or prior to the date
      which is twelve months after the Closing Date, the aggregate amount of
      amendment, upfront and other similar fees and legal, accounting and other
      fees and expenses payable in connection with the execution and delivery of
      this Agreement and the Canadian Credit Agreement and the consummation of
      the transactions contemplated hereby or thereby to (ii) Adjusted Fixed
      Charges for such period.

            "GAAP": generally accepted accounting principles in the United
      States of America in effect from time to time; provided that, to the
      extent that the Administrative Agent determines that a change in GAAP
      materially affects the calculation of any of the covenants contained in
      subsection 10.1, GAAP shall mean, solely with respect to the covenants so
      affected, generally accepted accounting principles consistent with those
      utilized in preparing the audited financial statements referred to in
      subsection 7.1.

            "GE Capital":  as defined in the preamble to this Agreement.

            "Governmental Authority": any nation or government, any state or
      other political subdivision thereof and any entity exercising executive,
      legislative, judicial, regulatory or administrative functions of or
      pertaining to government.

            "GSLMC Security Agreement": the Security Agreement executed and
      delivered by GSLMC, substantially in the form of Exhibit D, as the same
      may be amended, restated, supplemented or otherwise modified from time to
      time.

            "Guarantee Obligation": as to any Person (the "guaranteeing
      person"), any obligation of (a) the guaranteeing person or (b) another
      Person (including, without limitation, any bank under any letter of
      credit) 



                                      -20-

<pg$pcn>
      with respect to which the guaranteeing person has issued a reimbursement,
      counterindemnity or similar obligation, in any such case guaranteeing or
      in effect guaranteeing any Indebtedness, leases, dividends or other
      obligations (the "primary obligations") of any other third Person (the
      "primary obligor") in any manner, whether directly or indirectly,
      including, without limitation, any obligation of the guaranteeing person,
      whether or not contingent, (i) to purchase any such primary obligation or
      any property constituting direct or indirect security therefor, (ii) to
      advance or supply funds (1) for the purchase or payment of any such
      primary obligation or (2) to maintain working capital or equity capital of
      the primary obligor or otherwise to maintain the net worth or solvency of
      the primary obligor, (iii) to purchase property, securities or services
      primarily for the purpose of assuring the owner of any such primary
      obligation of the ability of the primary obligor to make payment of such
      primary obligation or (iv) otherwise to assure or hold harmless the owner
      of any such primary obligation against loss in respect thereof; provided,
      however, that the term Guarantee Obligation shall not include endorsements
      of instruments for deposit or collection in the ordinary course of
      business. The amount of any Guarantee Obligation of any guaranteeing
      person shall be deemed to be the lower of (a) an amount equal to the
      stated or determinable amount of the primary obligation in respect of
      which such Guarantee Obligation is made and (b) the maximum amount for
      which such guaranteeing person may be liable pursuant to the terms of the
      instrument embodying such Guarantee Obligation, unless such primary
      obligation and the maximum amount for which such guaranteeing person may
      be liable are not stated or determinable, in which case the amount of such
      Guarantee Obligation shall be such guaranteeing person's maximum
      reasonably anticipated liability in respect thereof as determined by the
      Borrower (and reasonably acceptable to the Administrative Agent) in good
      faith.

            "Guarantees": the collective reference to the Affiliate Guarantee,
      the guarantees contained in Section 11 and each guarantee provided
      pursuant to subsection 10.19.

            "Guarantor": any Person delivering a Guarantee pursuant to this
      Agreement (including, without limitation, HCNA and each Borrower).

            "Hazardous Materials": any hazardous materials, hazardous wastes,
      hazardous constituents, hazardous or toxic substances, petroleum products
      (including crude oil or any fraction thereof), defined or regulated as
      such in or under any Environmental Law.

            "HCG":  Harris Chemical Group, Inc., a Delaware corporation.



                                      -21-

<pg$pcn>
            "HCNA":  as defined in the preamble.

            "Incremental Investment": as defined in "Permitted Investment
      Amount".

            "Indebtedness": of any Person at any date, (a) all indebtedness of
      such Person for borrowed money or for the deferred purchase price of
      property or services (other than current trade liabilities incurred in the
      ordinary course of business and payable in accordance with customary
      practices), (b) any other indebtedness of such Person which is evidenced
      by a note, bond, debenture or similar instrument, (c) all obligations of
      such Person under Financing Leases and (d) all obligations of such Person
      in respect of letters of credit, acceptances and similar obligations
      issued or created for the account of such Person.

            "Insignificant Subsidiary": at any time, each Subsidiary that,
      together with its Subsidiaries, for the most recent fiscal year for which
      the relevant financial information is available, had revenues, determined
      in accordance with GAAP, of less than $1,000,000.

            "Insolvency": with respect to any Multiemployer Plan, the condition
      that such Plan is insolvent within the meaning of Section 4245 of ERISA.

            "Insolvent":  pertaining to a condition of Insolvency.

            "Intellectual Property":  as defined in subsection 6.9.

            "Interest Coverage Ratio": for any period with respect to HCNA and
      its Subsidiaries, the ratio of (i) Consolidated EBITDA to (ii)
      Consolidated Interest Expense for such period.

            "Interest Payment Date": (a) as to any Base Rate Loan, the last day
      of each March, June, September and December to occur while such Loan is
      outstanding, (b) as to any Eurodollar Loan having an Interest Period of
      three months or less, the last day of such Interest Period, and (c) as to
      any Eurodollar Loan having an Interest Period longer than three months,
      the last day of such Interest Period and each other day which is three
      months, or a whole multiple thereof, after the first day of such Interest
      Period.

            "Interest Period":  with respect to any Eurodollar Loan:

                  (i) initially, the period commencing on the borrowing or
            conversion date, as the case may be, with respect to such Eurodollar
            Loan and ending one, two, three or six months thereafter, as
            selected by the 


                                      -22-

<pg$pcn>
            relevant Borrower in its notice of borrowing or notice of
            conversion, as the case may be, given with respect thereto; and

                  (ii) thereafter, each period commencing on the last day of the
            next preceding Interest Period applicable to such Eurodollar Loan
            and ending one, two, three or six months thereafter, as selected by
            such Borrower by irrevocable notice to the Administrative Agent not
            less than three Business Days prior to the last day of the then
            current Interest Period with respect thereto;

      provided that, all of the foregoing provisions relating to Interest
      Periods are subject to the following:

                  (1) if any Interest Period pertaining to a Eurodollar Loan
            would otherwise end on a day that is not a Business Day, such
            Interest Period shall be extended to the next succeeding Business
            Day unless the result of such extension would be to carry such
            Interest Period into another calendar month in which event such
            Interest Period shall end on the immediately preceding Business Day;

                  (2) any Interest Period that would otherwise extend beyond the
            Termination Date shall end on the Termination Date;

                  (3) any Interest Period pertaining to a Eurodollar Loan that
            begins on the last Business Day of a calendar month (or on a day for
            which there is no numerically corresponding day in the calendar
            month at the end of such Interest Period) shall end on the last
            Business Day of a calendar month; and

                  (4) each Borrower shall select Interest Periods so as not to
            require a payment or prepayment of any Eurodollar Loan owing by it
            during an Interest Period for such Loan.

            "Interim Accounting Period": with respect to each Borrower, each
      period of four or five weeks into which the fiscal quarter of such
      Borrower is divided, based upon a fiscal year of four thirteen-week fiscal
      quarters, with each such fiscal quarter being divided into two four-week
      periods followed by one five-week period.

            "Inventory":  as defined in "Eligible Inventory".

            "Investment Company Act":  the Investment Company Act of 1940, as
      amended from time to time.

            "Investments":  as defined in subsection 10.10.



                                      -23-

<pg$pcn>
            "Landlord's Waiver": a Landlord's Letter, substantially in the form
      of Exhibit I-1 or a Warehousemen Notice, as the context shall require.

            "L/C Commitment":  $40,000,000.

            "L/C Issuer":  as defined in subsection 3.1(a).

            "L/C Obligations": at any time with respect to a Borrower, an amount
      equal to the sum (without duplication) of (a) the aggregate then undrawn
      and unexpired amount of the then outstanding Letters of Credit issued for
      the account of such Borrower, (b) the aggregate amount of drawings under
      Letters of Credit issued for the account of such Borrower which have not
      then been reimbursed by such Borrower (through the incurrence of Revolving
      Credit Loans) pursuant to subsection 3.2 and (c) the maximum amount of all
      other outstanding obligations incurred by the Administrative Agent and the
      Lenders at the request of such Borrower, whether direct or indirect,
      contingent or otherwise, due or not due, in connection with the issuance
      of a reimbursement agreement or guaranty by the Administrative Agent with
      respect to any Letter of Credit.

            "Lenders":  as defined in the preamble to this Agreement.

            "Letters of Credit":  as defined in subsection 3.1(a).

            "Lien": any mortgage, pledge, hypothecation, assignment, deposit
      arrangement, encumbrance, lien (statutory or other), charge or other
      security interest or any preference, priority or other security agreement
      or preferential arrangement of any kind or nature whatsoever (including,
      without limitation, any conditional sale or other title retention
      agreement and any Financing Lease having substantially the same economic
      effect as any of the foregoing).

            "Loan": any loan (including, without limitation, a Swing Line Loan)
      made by a Lender pursuant to this Agreement to any Borrower.

            "Loan Documents": this Agreement, the Notes, the Applications, the
      Guarantees, the Security Documents and any other agreements or documents
      executed in connection with this Agreement or the transactions
      contemplated hereby, as the same may be amended, restated, supplemented or
      otherwise modified from time to time.

            "Loan Parties": each Borrower, each Guarantor and each Subsidiary of
      HCNA which is a party to a Loan Document.



                                      -24-

<pg$pcn>
            "Lock Box Agreement": each lock box agreement executed and delivered
      by the Borrowers, substantially in the form of Exhibit G (with such
      revisions thereto as may be negotiated among the Collateral Agent, the
      Administrative Agent, the relevant Borrower and the relevant lock box
      bank), as the same may be amended, restated, supplemented or otherwise
      modified from time to time.

            "Majority Lenders": at any time, Lenders the Commitment Percentages
      of which aggregate more than 50%.

            "Major Project Capital Expenditures": (i) Capital Expenditures by
      HCNA or any of its Subsidiaries in respect of the purchase or other
      acquisition of fixed or capital assets comprising (a) up to $9,400,000
      with respect to packaging equipment for evaporated salt produced as a
      by-product of an unrelated industrial operation in New Johnsville,
      Tennessee, (b) up to $5,500,000 with respect to additional production
      capacity of 500,000 tons to the Goderich mine, (c) up to $2,500,000 with
      respect to Phase II of the West Pond Development Plan to expand the pond
      area, increase solar capacity and access an area of higher brine
      concentration in order to reduce the use of higher cost raw materials and
      (d) up to $5,200,000 by GSLMC with respect to the sulfate of potash
      ("SOP") expansion plan for the implementation of plant cooling processes
      for improved yields and extended production of the Ogden plant and
      additional loading and storage facilities to support expanded potash and
      magnesium chloride production, or (ii) Capital Expenditures with respect
      to any other major project which may be substituted for any of the
      foregoing projects in whole or in part upon (x) delivery of a certificate
      of a Responsible Officer of HCNA or any Borrower stating that (1) such
      Responsible Officer has no knowledge of any material adverse effect which
      could reasonably be expected to result from such replacement project and
      (2) such Responsible Officer believes to the best of such Responsible
      Officer's knowledge that such replacement project has economic payback and
      return characteristics at least as favorable as those of the project being
      replaced and (y) approval of the Administrative Agent (which approval
      shall not be unreasonably withheld).

            "Material Adverse Effect":  a material adverse effect on:

                  (a) the business, operations, property or financial or other
            condition of either (i) with respect to the use of such term in
            subsection 10.19, any Borrower and its Subsidiaries taken as a whole
            and (ii) with respect to any other provision of this Agreement or
            any other Loan Document, HCNA and its Subsidiaries taken as a whole;
            or



                                      -25-

<pg$pcn>
                  (b) the validity or enforceability of this Agreement, any of
            the Notes or any Application or any of the other Loan Documents or
            the rights or remedies of the Administrative Agent, the Collateral
            Agent or the Lenders hereunder or thereunder.

            "Materials of Environmental Concern": any gasoline or petroleum
      (including crude oil or any fraction thereof) or petroleum products or any
      hazardous or toxic substances, materials or wastes, defined or regulated
      as such in or under any Environmental Law, including, without limitation,
      asbestos, polychlorinated biphenyls and urea-formaldehyde insulation.

            "Maximum Available Credit": an amount equal to (a) the lesser of (i)
      the Aggregate Commitment and (ii) the Aggregate U.S. Borrowing Base
      Availability minus (b) the Sifto Reserve, if any.

            "Multiemployer Plan": a Plan which is a multiemployer plan as
      defined in Section 4001(a)(3) of ERISA.

            "NACC Security Agreement": the Security Agreement executed and
      delivered by NACC, substantially in the form of Exhibit E as the same may
      be amended, restated, supplemented or otherwise modified from time to
      time.

            "NASC Security Agreement": the Security Agreement executed and
      delivered by NASC, substantially in the form of Exhibit F as the same may
      be amended, restated, supplemented or otherwise modified from time to
      time.

            "Non-Responding Lender": with respect to any proposed amendment,
      restatement, supplement, waiver, consent or other modification to this
      Agreement or any other Loan Document pursuant to subsection 14.1 or any
      other determination to be made by the Majority Lenders, the Required
      Lenders or the Aggregate Required Lenders, as the case may be, hereunder
      or under any other Loan Document (each, a "Proposed Determination"), in
      each case as to which the Lenders have been given a Qualified
      Determination Notice, any Lender which fails to provide an affirmative or
      negative written response to the Administrative Agent within 10 Business
      Days, after receiving such Qualified Determination Notice. For the
      purposes of this definition, "Qualified Determination Notice" shall mean
      any written notice delivered to each Lender at least 10 Business Days
      prior to the response deadline for the relevant Proposed Determination. In
      the event that a Qualified Determination Notice is not given with respect
      to a Proposed Determination, no Lender shall be deemed to be a
      "Non-Responding Lender" in respect of such Proposed Determination.



                                      -26-

<pg$pcn>
            "Notes": the collective reference to the Revolving Credit Notes and
      the Swing Line Notes; each, a "Note".

            "Obligations": the collective reference to the unpaid principal of
      and interest on the Notes and all other obligations and liabilities of the
      Borrowers to the Administrative Agent, the Collateral Agent and the
      Lenders (including, without limitation, interest accruing after the
      maturity of the Loans and interest accruing after the filing of any
      petition in bankruptcy, or the commencement of any insolvency,
      reorganization or like proceeding, relating to any Borrower whether or not
      a claim for post-filing or post-petition interest is allowed in such
      proceeding), whether direct or indirect, absolute or contingent, due or to
      become due, or now existing or hereafter incurred, which may arise under,
      out of, or in connection with, this Agreement, the Notes, the
      Applications, the other Loan Documents or any other document made,
      delivered or given in connection herewith or therewith, in each case
      whether on account of principal, interest, reimbursement obligations
      (including, without limitation, all L/C Obligations), fees, indemnities,
      costs, expenses or otherwise (including, without limitation, all fees and
      disbursements of counsel to the Administrative Agent, to the Collateral
      Agent or to the Lenders that are required to be paid by a Borrower or HCNA
      pursuant to the terms of this Agreement or any other Loan Document).

            "Original Closing Date":  October 15, 1993.

            "Participant":  as defined in subsection 14.7(b).

            "PBGC": the Pension Benefit Guaranty Corporation established
      pursuant to Subtitle A of Title IV of ERISA.

            "Permitted Capital Expenditures":  as defined in subsection 10.5.

            "Permitted Investment Amount": at any date, (a) for purposes of
      subsection 10.10(d), an amount not to exceed $10,000,000 at any one time
      outstanding and (b) for purposes of subsections 10.2(e), 10.4(h) and
      10.10(h) in the aggregate, an amount not to exceed $10,000,000 at any one
      time outstanding. For purposes of this definition, the amount of an
      Investment which, at any date, shall be deemed to be "outstanding" shall
      be the amount (to the extent that such amount is not less than zero) equal
      to (x) the aggregate amount (1) invested by HCNA and its Subsidiaries
      after the Closing Date in joint ventures in which HCNA or any of its
      Subsidiaries holds Capital Stock or (2) loaned to, or invested in, any
      Subsidiary of HCNA which is not a Guarantor (other than the Sifto Group,
      as to which loans and investments shall not be included in the calculation
      of the Permitted Investment Amount), as the case may be (such amount
      invested or loaned after the Closing Date, the 



                                      -27-

<pg$pcn>
      "Incremental Investment"), minus (y) the aggregate amount of cash
      dividends, principal repayments or other cash distributions (other than
      interest payments) actually received by HCNA and its Subsidiaries during
      the period from the Closing Date to the date of calculation on account of
      such Incremental Investment (as reported on the financial statements of
      HCNA and its Subsidiaries delivered pursuant to subsection 9.1(a) or
      9.1(b), as the case may be, for such period).

            "Permitted Refinancing Indebtedness": Indebtedness that refunds,
      refinances or otherwise replaces any other Indebtedness ("Refinanced
      Indebtedness"); provided, that (a) the aggregate principal amount (or, if
      issued with original issue discount, the aggregate issue price) of such
      refinancing Indebtedness is equal to or less than the sum of (i) the
      aggregate principal amount (or, if issued with original issue discount,
      the aggregate accreted value) then outstanding of such Refinanced
      Indebtedness and (ii) any premiums, fees or customary taxes payable in
      connection with such refinancing, (b) no scheduled principal payments
      shall be payable in respect of such refinancing Indebtedness prior to
      February 28, 2003, (c) each obligor, guarantor and item of collateral in
      respect of such refinancing Indebtedness shall also have been, to at least
      the same extent, an obligor, guarantor, or item of collateral, as the case
      may be, in respect of such Refinanced Indebtedness, (d) the interest rate
      and other operating costs applicable to such refinancing Indebtedness
      shall be consistent with current market conditions and the other terms and
      conditions of such refinancing Indebtedness (including, without
      limitation, any subordination provisions) shall be no less favorable to
      the interests of the relevant obligor and the Lenders than the terms and
      conditions of such Refinanced Indebtedness and (e) after giving effect to
      the incurrence of such Refinancing Indebtedness, HCNA shall be in
      compliance with the covenants set forth in subsection 10.1, determined on
      a pro forma basis as if such refinancing had occurred on the first day of
      the most recent period of four consecutive quarters for which the relevant
      historical financial information is available.

            "Person": an individual, partnership, corporation, business trust,
      joint stock company, trust, unincorporated association, joint venture,
      Governmental Authority or other entity of whatever nature.

            "Plan": at a particular time, any employee benefit plan which is
      covered by ERISA and in respect of which a Borrower or a Commonly
      Controlled Entity is (or, if such plan were terminated at such time, would
      under Section 4069 of ERISA be deemed to be) an "employer" as defined in
      Section 3(5) of ERISA.



                                      -28-

<pg$pcn>
            "Properties":  as defined in subsection 7.16.

            "Public Debt": the collective reference to the Senior Secured Notes,
      the Senior Subordinated Notes and the Sifto Notes.

            "Public Warehouse": any warehouse other than a warehouse which is
      (a) owned or leased entirely by HCNA or any of its Subsidiaries and (b)
      under the control and management of HCNA or such Subsidiary, as the case
      may be.

            "Refunded Swing Line Loans":  as defined in subsection 5.4.

            "Register":  as defined in subsection 14.7(d) .

            "Regulation U": Regulation U of the Board of Governors of the
      Federal Reserve System as in effect from time to time.

            "Reorganization": with respect to any Multiemployer Plan, the
      condition that such plan is in reorganization within the meaning of
      Section 4241 of ERISA.

            "Reportable Event": any of the events set forth in Section 4043(b)
      of ERISA, other than those events as to which the thirty day notice period
      is waived under subsections .22, .23, .25, .27, .28, .29, .30, .31, .32,
      .34 or .35 of the PBGC Reg. Section 4043.

            "Required Lenders": at any time, Lenders the Commitment Percentages
      of which aggregate at least 66-2/3%.

            "Requirement of Law": as to any Person, the Certificate of
      Incorporation and By-Laws or other organizational or governing documents
      of such Person, and any law, treaty, rule or regulation or determination
      of an arbitrator or a court or other Governmental Authority, in each case
      applicable to or binding upon such Person or any of its property or to
      which such Person or any of its property is subject.

            "Responsible Officer": of any Person, the chief executive officer
      and the president of such Person or, with respect to financial matters,
      the chief financial officer and the treasurer of such Person.

            "Restricted Payment Allowance Condition": with respect to Permitted
      Investments and Restricted Payments, the simultaneous satisfaction of each
      of the following conditions:

                  (a)  no Default or Event of Default shall have occurred and be
            continuing or would result therefrom;



                                      -29-

<pg$pcn>
                  (b) the Interest Coverage Ratio of HCNA for the period of four
            consecutive fiscal quarters ending on the date of the financial
            statements of HCNA then most recently delivered to the
            Administrative Agent pursuant to subsection 9.1(a) or 9.1(b), as the
            case may be, shall not be less than 2.25 to 1.0; and

                  (c) the Fixed Charge Coverage Ratio of HCNA for the period of
            four consecutive fiscal quarters ending on the date of the financial
            statements of HCNA then most recently delivered to the
            Administrative Agent pursuant to subsection 9.1(a) or 9.1(b), as the
            case may be, shall not be less than 1.30 to 1.0.

            "Restricted Payments":  as defined in subsection 10.9.

            "Revocation Period":  as defined in subsection 3.1(f).

            "Revolving Credit Loans":  as defined in subsection 2.1(a).

            "Revolving Credit Note":  as defined in subsection 2.2.

            "Sale/Leaseback Documents":  any agreements or documents executed in
      connection with the Sale/Leaseback Transaction.

            "Sale/Leaseback Transaction": the sale/leaseback transaction
      involving the Argus Utility Plant for $75,000,000 consummated on July 15,
      1996 and more specifically described in the Sale/Leaseback Documents.

            "Security Agreements": the collective reference to the NASC Security
      Agreement, the NACC Security Agreement and the GSLMC Security Agreement.

            "Security Documents": the collective reference to the Security
      Agreements, the Lock Box Agreements and all other security documents
      delivered to the Administrative Agent or the Collateral Agent which grant
      a Lien on any asset or assets of any Person to secure the obligations and
      liabilities of a Borrower hereunder, under the Notes, under the
      Applications and/or under any of the other Loan Documents or to secure any
      guarantee of any such obligations and liabilities.

            "Senior Secured Notes": the Senior Secured Notes, due July 15, 2001,
      issued by HCNA in an original aggregate principal amount of $200,000,000,
      and any Permitted Refinancing Indebtedness in respect thereof, as the same
      may be amended, restated, supplemented or otherwise modified from time to
      time in accordance with the provisions of subsection 10.11(a).



                                      -30-

<pg$pcn>
            "Senior Subordinated Notes": the Senior Subordinated Notes, due July
      15, 2003, issued by HCNA in an original aggregate principal amount of
      $335,000,000, and any Permitted Refinancing Indebtedness in respect
      thereof, as the same may be amended, restated, supplemented or otherwise
      modified from time to time in accordance with the provisions of subsection
      10.11(a).

            "Services Agreement": the Services Agreement described in the
      Existing Credit Agreement, as the same may be amended, restated,
      supplemented or otherwise modified from time to time in accordance with
      the provisions of subsection 10.11(b).

            "Sifto": Sifto Canada Inc., a corporation organized and existing
      under the laws of the Province of Ontario, Canada.

            "Sifto Group": the collective reference to (i) Sifto, (ii) the
      Subsequent Borrower, (iii) any Subsidiaries of Sifto and the Subsequent
      Borrower which are Guarantors (as defined in the Canadian Credit
      Agreement) pursuant to the Canadian Credit Agreement and (iv) any Canadian
      holding company for Sifto and the Subsequent Borrower which is a Guarantor
      (as defined in the Canadian Credit Agreement) pursuant to the Canadian
      Credit Agreement and which has no material liabilities and holds no
      material assets other than the Capital Stock of Sifto and the Subsequent
      Borrower.

            "Sifto Notes": the Senior Secured Notes, due July 15, 2000, issued
      by Sifto in an original aggregate principal amount of $100,000,000, and
      any Permitted Refinancing Indebtedness in respect thereof, as the same may
      be amended, restated, supplemented, or otherwise modified from time to
      time in accordance with the provisions of subsection 10.11(a).

            "Sifto Reserve": for any period set forth below during which any
      Sifto Notes (other than any Permitted Refinancing Indebtedness in respect
      thereof) are outstanding, the amount set forth opposite such period:

<TABLE>
<CAPTION>
                  Period                              Sifto Reserve
                  ------                              -------------
<S>                                                   <C>
            03/14/00 - 04/13/00                       $13,000,000
            04/14/00 - 05/13/00                       $21,666,667
            05/14/00 - 06/13/00                       $30,333,333
            06/14/00 and thereafter                   $39,000,000
</TABLE>

            "Single Employer Plan": any Plan which is covered by Title IV of
      ERISA, but which is not a Multiemployer Plan.



                                      -31-

<pg$pcn>
            "Soda Ash Subsidiary": any Subsidiary of HCNA (other than a
      Borrower) organized for the purpose of engaging substantially in the
      production or marketing of soda ash.

            "Solvent":  with respect to any Person, shall mean that:

                  (a) the present value of such Person's assets is in excess of
            the total amount of such Person's liabilities;

                  (b) such Person is able to pay its debts as they become due;
            and

                  (c) such Person does not have unreasonably small capital to
            carry on its business as theretofore operated and all businesses in
            which such Person is about to engage.

            "Standby Letter of Credit":  as defined in subsection 3.1(b).

            "Stockholders' Agreement: the Stockholders' Agreement, dated as of
      October 15, 1993, as amended, attached hereto as Exhibit L, among HCG and
      the Stockholders (as defined therein), as the same may be further amended,
      restated, supplemented or otherwise modified from time to time in
      accordance with the provisions of subsection 10.11(b).

            "Subsequent Borrower":  as defined in the Canadian Credit Agreement.

            "Subsidiary": as to any Person, a corporation, partnership or other
      entity of which shares of Voting Stock sufficient to elect a majority of
      the board of directors or other managers of such corporation, partnership
      or other entity are at the time owned, or the management of which is
      otherwise controlled, directly or indirectly through one or more
      intermediaries, or both, by such Person. Unless otherwise qualified, all
      references to a "Subsidiary" or to "Subsidiaries" in this Agreement shall
      refer to a Subsidiary or Subsidiaries of a Borrower.

            "Swing Line Commitment": at any date, the obligation of the Swing
      Line Lender to make Swing Line Loans pursuant to subsection 5.1 in the
      amount referred to therein.

            "Swing Line Lender":  GE Capital.

            "Swing Line Loans":  as defined in subsection 5.1.

            "Swing Line Note":  as defined in subsection 5.2.

            "Taxes":  as defined in subsection 6.14(a).



                                      -32-

<pg$pcn>
            "Tax Sharing Agreement": the Tax Sharing Agreement, dated as of
      October 15, 1993, between HCG and HCNA, attached hereto as Exhibit M, as
      the same may be amended, restated, supplemented or otherwise modified from
      time to time in accordance with the provisions of subsection 10.11(b).

            "Termination Date": the earlier of (a) February 28, 2002 and (b)
      February 15, 2001, if any Senior Secured Notes (other than Permitted
      Refinancing Indebtedness in respect thereof) are outstanding on such date.

            "Tranche": at any date, the collective reference to all Eurodollar
      Loans which then have Interest Periods in effect which began on the same
      date and are scheduled to end on the same later date (whether or not such
      Loans shall originally have been made on the same day).

            "Transferee":  as defined in subsection 14.7(f).

            "Transferred HCNA Amounts":  as defined in subsection 10.5.

            "Type": as to any Loan, its nature as a Base Rate Loan or a
      Eurodollar Loan.

            "UCC": the Uniform Commercial Code as from time to time in effect in
      the State of New York and, as to perfection and enforcement of security
      interests, the Uniform Commercial Code as from time to time in effect in
      each jurisdiction where, pursuant to the Uniform Commercial Code as from
      time to time in effect in the State of New York, perfection and the effect
      of non-perfection is to be determined.

            "Uniform Customs": the Uniform Customs and Practice for Documentary
      Credits (1993 Revision), International Chamber of Commerce Publication No.
      500, as the same may be amended from time to time.

            "Voting Stock": of a Person, Capital Stock of such Person having
      ordinary voting power (other than Capital Stock having such power only by
      reason of the happening of a contingency) to elect directors of such
      Person.

            "Warehousemen Notice": a Warehousemen Notice, substantially in the
      form of Exhibit I-2.

            "Weighted Average Life to Maturity": when applied to any
      Indebtedness, at any date, the number of years obtained by dividing (a)
      the sum of the products obtained by multiplying (i) the amount of each
      then remaining installment, sinking fund, serial maturity or other
      required payments of principal, including payment at final maturity, in
      respect thereof, by (ii) the number of years (calculated 



                                      -33-

<pg$pcn>
      to the nearest one-twelfth) that will elapse between such date and the
      making of such payment, by (b) the then outstanding principal amount of
      such Indebtedness.

            1.2 Other Definitional Provisions. (a) Unless otherwise specified
therein, all terms defined in this Agreement shall have the defined meanings
when used in the Notes or any certificate or other document made or delivered
pursuant hereto.

            (b) As used herein and in the Notes, and any certificate or other
document made or delivered pursuant hereto, accounting terms relating to HCNA
and its Subsidiaries not defined in subsection 1.1 and accounting terms partly
defined in subsection 1.1, to the extent not defined, shall have the respective
meanings given to them under GAAP.

            (c) The words "hereof", "herein" and "hereunder" and words of
similar import when used in this Agreement shall refer to this Agreement as a
whole and not to any particular provision of this Agreement, and Section ,
subsection, Schedule and Exhibit references are to this Agreement unless
otherwise specified.

            (d) The meanings given to terms defined herein shall be equally
applicable to both the singular and plural forms of such terms.

            (e) Terms defined in the UCC and not otherwise defined herein shall
have the meanings ascribed thereto in the UCC.


      SECTION 2.        AMOUNT AND TERMS OF REVOLVING CREDIT
                        COMMITMENTS

            2.1 Revolving Credit Commitments. (a) The Borrowers acknowledge and
confirm that the Lenders have made revolving credit loans to the Borrowers under
the Existing Credit Agreement that are outstanding on the date hereof in the
aggregate principal amount of $19,000,000. The Borrowers hereby reaffirm their
obligations to pay such existing revolving credit loans in accordance with the
terms and provisions of this Agreement and the other Loan Documents and agree
that such revolving credit loans constitute Revolving Credit Loans for all
purposes of this Agreement. Subject to the terms and conditions hereof, each
Lender severally agrees to make revolving credit loans ("Revolving Credit
Loans") to the Borrowers from time to time during the Commitment Period in an
aggregate principal amount at any one time outstanding which, when added to such
Lender's Commitment Percentage of the aggregate amount of L/C Obligations and
Swing Line Loans then outstanding with respect to all Borrowers, does not exceed
the amount of such Lender's Commitment; provided that no Revolving Credit Loans
shall be made to a Borrower if, after giving effect thereto and the use of
proceeds thereof, (x) the Aggregate Outstanding Extensions of Credit then owing
by such Borrower to all Lenders would exceed 



                                      -34-

<pg$pcn>
the Borrowing Base then in effect with respect to such Borrower or (y) the
Aggregate Outstanding Extensions of Credit then owing by all Borrowers to all
Lenders would exceed the Maximum Available Credit. During the Commitment Period
the Borrowers may use the Commitments by borrowing, prepaying the Revolving
Credit Loans in whole or in part, and reborrowing, all in accordance with the
terms and conditions hereof.

            (b) The Revolving Credit Loans may from time to time be (i)
Eurodollar Loans, (ii) Base Rate Loans, or (iii) a combination thereof, as
determined by the relevant Borrower and notified to the Administrative Agent in
accordance with subsections 2.5 and 6.6, provided that no Revolving Credit Loan
shall be made as a Eurodollar Loan after the day that is one month prior to the
Termination Date.

            2.2 Revolving Credit Notes. The Revolving Credit Loans made by each
Lender to a Borrower shall be evidenced by a promissory note of such Borrower,
substantially in the form of Exhibit A, with appropriate insertions as to payor,
payee, date and principal amount (a "Revolving Credit Note"), payable to the
order of such Lender and in a principal amount equal to the lesser of (a) the
amount of the initial Commitment of such Lender and (b) the aggregate unpaid
principal amount of all Revolving Credit Loans made by such Lender to such
Borrower. Each Lender is hereby authorized to record the date, Type and amount
of each Revolving Credit Loan made by such Lender to such Borrower, each
continuation thereof, each conversion of all or a portion thereof to another
Type, the date and amount of each payment or prepayment of principal thereof
and, in the case of Eurodollar Loans, the length of each Interest Period with
respect thereto, on its books and records maintained for such purpose, and any
such recordation shall constitute prima facie evidence of the accuracy of the
information so recorded; provided that the failure of such Lender to make such
recordation (or any error in recordation) shall not affect the obligations of
such Borrower hereunder or under its Revolving Credit Note. Each Revolving
Credit Note shall (x) be dated the Original Closing Date, (y) be stated to
mature on the Termination Date and (z) provide for the payment of interest in
accordance with subsection 6.8.

            2.3  [INTENTIONALLY OMITTED]

            2.4  [INTENTIONALLY OMITTED]

            2.5 Procedure for Borrowing. A Borrower may borrow under the
Commitments during the Commitment Period on any Business Day, provided that such
Borrower shall give the Administrative Agent irrevocable notice (which notice
must be received by the Administrative Agent prior to 11:00 A.M., New York City
time), (a) in the case of Revolving Credit Loans only, at least three Business
Days prior to the requested Borrowing Date, if all or any part of the requested
Revolving Credit Loans are to be initially Eurodollar Loans or (b) at least one
Business 


                                      -35-

<pg$pcn>
Day prior to the requested Borrowing Date, otherwise. Such notice shall
specify (i) the identity of the Borrower seeking to borrow on such Borrowing
Date, (ii) the amount to be borrowed, (iii) the requested Borrowing Date, (iv)
whether the borrowing is to be of Eurodollar Loans, Base Rate Loans or a
combination thereof and (v) if the borrowing is to be entirely or partly of
Eurodollar Loans, the respective amounts of each such Type of Loan and the
respective lengths of the initial Interest Periods therefor. Each borrowing by a
Borrower under the Commitments (other than any borrowing of Swing Line Loans or
of Revolving Credit Loans the proceeds of which are used to refund Swing Line
Loans) shall be in an amount equal to (x) in the case of Base Rate Loans under
the Commitments, $1,000,000 or a whole multiple of $500,000 in excess thereof
(or, if the then Available Commitments are less than $1,000,000, such lesser
amount) and (y) in the case of Eurodollar Loans, $5,000,000 or a whole multiple
of $500,000 in excess thereof. Upon receipt of any such notice from a Borrower,
the Administrative Agent shall promptly notify each Lender thereof. Each Lender
will make the amount of its pro rata share of each borrowing available to the
Administrative Agent, for the account of the relevant Borrower, at the
Administrative Agent's Account prior to 11:00 A.M., New York City time, on the
Borrowing Date requested by such Borrower in funds immediately available to the
Administrative Agent. Such borrowing will then be made available to such
Borrower by the Administrative Agent making a wire transfer promptly, and, in
any event, by 12:00 Noon, New York City time, of the amount made available to
the Administrative Agent by the Lenders, in like funds as received by the
Administrative Agent, to such Borrower's account listed on Schedule IX or such
other account as may be notified by such Borrower to the Administrative Agent
from time to time in writing.

            2.6 Use of Proceeds of Loans. The proceeds of all Loans shall be
used by the Borrowers for working capital and other general corporate purposes
of the Borrowers.


      SECTION 3.        AMOUNT AND TERMS OF LETTER OF CREDIT SUB-FACILITY

            3.1 Issuance. (a) Subject to the terms and conditions of this
Agreement, the Administrative Agent and the Lenders agree to incur, from time to
time prior to the Termination Date, upon the request of the applicable Borrower
and for such Borrower's account, L/C Obligations by causing letters of credit
("Letters of Credit") to be issued (by a bank or other legally authorized Person
selected by such Borrower and acceptable to the Administrative Agent in its sole
discretion (each, an "L/C Issuer")) for such Borrower's account and guaranteed
by the Administrative Agent; provided, however, that if the L/C Issuer is a
Lender, then such Letters of Credit shall not be guaranteed by the
Administrative Agent but rather each Lender shall, subject to the terms and
conditions hereinafter set 



                                      -36-

<pg$pcn>
forth, purchase (or be deemed to have purchased) risk participations in all
Letters of Credit issued with the written consent of the Administrative Agent,
as more fully described in subsection 3.2(b). No Letter of Credit shall be
issued if, after giving effect to such issuance, (i) the aggregate L/C
Obligations of all Borrowers would exceed the L/C Commitment, (ii) the Available
Commitment of any Lender would be less than zero, (iii) the Aggregate
Outstanding Extensions of Credit then owing by the relevant Borrower to all
Lenders would exceed the Borrowing Base then in effect for such Borrower or (iv)
the Aggregate Outstanding Extensions of Credit then owing by all Borrowers to
all Lenders would exceed the Maximum Available Credit. No Letter of Credit shall
have an expiry date which is more than one year following the date of issuance
thereof, and neither the Administrative Agent nor the Lenders shall be under any
obligation to incur L/C Obligations in respect of, or purchase risk
participations in, any Letter of Credit having an expiry date which is later
than the Termination Date.

            (b) Each Letter of Credit shall (i) be denominated in Dollars, (ii)
be in a face amount of not less than $50,000 at time of issue and (iii) be
either (1) a standby letter of credit issued to support obligations of a
Borrower, contingent or otherwise, which are of a type for which Revolving
Credit Loans would be available if the obligations were then due and payable (a
"Standby Letter of Credit"), or (2) a commercial letter of credit issued in
respect of the purchase of goods or services by a Borrower in the ordinary
course of business (a "Commercial Letter of Credit").

            (c) The Borrowers acknowledge and confirm that each of Barclays Bank
PLC, First Security Bank, National Association, and Nationsbank of Georgia, N.A.
shall be an L/C Issuer and has issued certain letters of credit that are
outstanding on the date hereof and listed on Schedule VIII. The Borrowers hereby
reaffirm their obligations in respect of such letters of credit provided for in
this Agreement and the other Loan Documents and agree that such letters of
credit constitute Letters of Credit for all purposes of this Agreement.

            (d) Each Letter of Credit shall be subject to the Uniform Customs
and, to the extent not inconsistent therewith, the laws of the State of New
York.

            (e) No L/C Issuer shall at any time be obligated to issue any Letter
of Credit hereunder if such issuance would conflict with, or cause such L/C
Issuer or any Lender to exceed any limits imposed by, any applicable Requirement
of Law; provided that each L/C Issuer and each Lender hereby agree to use
reasonable efforts to permit such Letter of Credit to be issued within the
restrictions of such applicable Requirement of Law.

            (f) With respect to each outstanding Letter of Credit issued for the
account of a Borrower hereunder which by its terms 



                                      -37-

<pg$pcn>
is automatically renewed or extended unless notice to the contrary is received
by the beneficiary thereunder within the time period specified therein (such
time period, the "Revocation Period"), such Letter of Credit automatically shall
be renewed or extended on its then current expiry date unless, not less than 10
Business Days prior to the end of the Revocation Period, either (i) such
Borrower has provided written notice to the L/C Issuer that it has elected not
to extend or renew such Letter of Credit or (ii) the Required Lenders have
provided notice to such L/C Issuer (notice of which determination such L/C
Issuer shall promptly provide to such Borrower) that they have elected not to
permit the renewal or extension of such Letter of Credit.

            (g) Any Borrower may cause an L/C Issuer to cease to be an L/C
Issuer for the purposes of this Agreement by delivering a written notice to the
Administrative Agent and such L/C Issuer, provided that at such time, no Letters
of Credit issued by such L/C Issuer or L/C Obligations in respect of such
Letters of Credit shall be outstanding.

            3.2 Advances Automatic; Participations. (a) In the event that the
Administrative Agent shall make any payment on or pursuant to any L/C
Obligation, such payment shall then be deemed automatically to constitute a
Revolving Credit Loan that is a Base Rate Loan to the applicable Borrower under
subsection 2.5 regardless of whether a Default or Event of Default shall have
occurred and be continuing and notwithstanding any Borrower's failure to satisfy
the conditions precedent set forth in Section 8, and each Lender shall be
obligated to pay its Commitment Percentage thereof to the Administrative Agent
for the Administrative Agent's own account. The failure of any Lender to make
available to the Administrative Agent its Commitment Percentage of any such
Revolving Credit Loan or payment by the Administrative Agent under or in respect
of a Letter of Credit shall not relieve any other Lender of its obligation
hereunder to make available to the Administrative Agent its Commitment
Percentage thereof, but no Lender shall be responsible for the failure of any
other Lender to make available such other Lender's Commitment Percentage of any
such payment.

            (b) If the Administrative Agent shall have determined in its
discretion that it is not appropriate for any Borrower to incur Revolving Credit
Loans as contemplated by subsection 3.2(a) because of an Event of Default
described in subsection 12(g) or otherwise or if it shall be illegal or unlawful
for any Lender to be deemed to have assumed a ratable share of the reimbursement
obligations owed to an L/C Issuer, or if any L/C Issuer is a Lender, then (i)
immediately and without further action whatsoever, each Lender shall be deemed
to have irrevocably and unconditionally purchased from the Administrative Agent
(or such L/C Issuer, 


                                      -38-

<pg$pcn>
as the case may be) an undivided interest and participation
equal to such Lender's Commitment Percentage of the L/C Obligations in respect
of all Letters of Credit then outstanding (or the Letters of Credit issued by
such L/C Issuer, as the case may be), and (ii) thereafter, immediately upon
issuance of any Letter of Credit (or any Letter of Credit issued by such L/C
Issuer, as the case may be), each Lender shall be deemed to have irrevocably and
unconditionally purchased from the Administrative Agent (or such L/C Issuer, as
the case may be) an undivided interest and participation equal to such Lender's
Commitment Percentage of the L/C Obligations with respect to such Letter of
Credit on the date of such issuance. Each Lender shall fund its participation in
all payments or disbursements made in respect of the Letters of Credit in the
same manner as provided in this Agreement with respect to Revolving Credit
Loans.

            3.3 Cash Collateral. (a) If the Borrowers are required to provide
cash collateral for any L/C Obligations pursuant to this Agreement, each
Borrower will pay to the Administrative Agent for the benefit of Lenders cash or
cash equivalents acceptable to the Administrative Agent in an amount equal to
the maximum amount then available to be drawn under each applicable Letter of
Credit outstanding issued for the account of such Borrower. Such funds or
Collateral Cash Equivalents and repayments or any interest income in respect
thereof shall be held by the Administrative Agent in a cash collateral account
(the "Cash Collateral Account") maintained at a bank or financial institution
acceptable to the Administrative Agent and such funds, repayments and interest
income shall be invested in Cash Equivalents to the extent deemed appropriate by
the Administrative Agent. The Cash Collateral Account shall be in the name of
the applicable Borrower and shall be pledged to, and subject to the control of,
the Administrative Agent, for the benefit of the Administrative Agent, the
Collateral Agent and the Lenders, in a manner satisfactory to the Administrative
Agent. Each Borrower hereby pledges and grants to the Administrative Agent, on
its own behalf and on behalf of the Collateral Agent and the Lenders, a first
priority security interest in all such funds and Collateral Cash Equivalents
held in the Cash Collateral Account from time to time and all proceeds thereof,
as security for the payment of all amounts due in respect of the L/C Obligations
and other Obligations (as defined herein and in the Canadian Credit Agreement),
whether or not then due, of such Borrower. This Agreement shall constitute a
security agreement under applicable law. Each Borrower shall execute and deliver
to the Administrative Agent such further documents and instruments as the
Administrative Agent reasonably may request to evidence the creation and
perfection of the security interest in the Cash Collateral Account.

            (b) If any L/C Obligations, whether or not then due and payable,
shall for any reason be outstanding on the Termination Date or the Acceleration
Date, as the case may be, the Borrowers shall on such date either (i) provide
cash collateral therefor in the manner described above, (ii) cause all such
Letters of Credit and guaranties thereof to be canceled and returned, or (iii)
deliver a standby letter 



                                      -39-

<pg$pcn>
(or letters) of credit in guaranty of such L/C Obligations, which standby letter
(or letters) of credit shall be of like tenor and duration as, and in an amount
equal to the aggregate maximum amount then available to be drawn under, the
Letters of Credit to which such outstanding L/C Obligations relate and shall be
issued by a Person, and shall be subject to such terms and conditions, as shall
be reasonably satisfactory to the Administrative Agent in its sole discretion.

            (c) From time to time after funds are deposited in the Cash
Collateral Account by any Borrower, the Administrative Agent may apply such
funds or Collateral Cash Equivalents and repayments or any interest income in
respect thereof then held in the Cash Collateral Account to the payment of any
amounts, in such order as the Administrative Agent may elect, as shall be or
shall become due and payable by such Borrower to the Lenders with respect to the
L/C Obligations of such Borrower and, upon the satisfaction in full of all L/C
Obligations of such Borrower, to any other Obligations (as defined herein and in
the Canadian Credit Agreement) then due and owing.

            (d) Neither any Borrower nor any Person claiming on behalf of or
through any Borrower shall have any right to withdraw any of the funds or
Collateral Cash Equivalents held in the Cash Collateral Account, except that
upon the termination of all L/C Obligations and the payment of all amounts
payable by the Borrowers to the Lenders in respect thereof, any funds remaining
in the Cash Collateral Account shall be applied to other Obligations (as defined
herein and in the Canadian Credit Agreement) then due and owing and upon payment
in full of such Obligations, any remaining amount shall be paid to the Borrowers
or as otherwise required by law.



                                      -40-

<pg$pcn>
            3.4 Fees and Expenses. Each Borrower agrees to pay to the
Administrative Agent for the benefit of the Lenders, as compensation to the
Lenders for L/C Obligations incurred by such Borrower hereunder, (a) a letter of
credit commission for the ratable account of the Lenders with respect to each
Commercial Letter of Credit issued for such Borrower's account in an amount
equal to 2.00% per annum times the face amount of such Commercial Letter of
Credit, which fronting fee shall be payable in advance on the date of issuance
of such Commercial Letter of Credit for the number of days until the expiry date
thereof and (b) a letter of credit commission for the ratable account of the
Lenders with respect to each Standby Letter of Credit issued for such Borrower's
account, in arrears, at the rate of 2.50% per annum of the average daily amount
available to be drawn under such Standby Letter of Credit during the period for
which such fee is calculated, which commission shall be payable on the last day
of each March, June, September and December to occur while such Standby Letter
of Credit is outstanding and upon the expiry of such Standby Letter of Credit.
In addition, each Borrower shall pay to each L/C Issuer, on demand, such normal
and customary fees (including, without limitation, fronting fees), charges and
expenses of such L/C Issuer in respect of the issuance, negotiation, acceptance,
amendment, transfer and payment of each Letter of Credit issued by such L/C
Issuer for such Borrower's account or otherwise payable pursuant to the
Application and related documentation under which such Letter of Credit is
issued.

            3.5 Request for Incurrence of L/C Obligations. The relevant Borrower
shall give the Administrative Agent at least two Business Days' prior written
notice requesting the incurrence of any L/C Obligation, specifying the date such
L/C Obligation is to be incurred, identifying the beneficiary and the Borrower
to which such L/C Obligation relates and describing the nature of the
transactions proposed to be supported thereby. The notice shall be accompanied
by the form of the relevant Letter of Credit (which shall be acceptable to the
relevant L/C Issuer). Notwithstanding anything contained herein to the contrary,
Applications by any Borrower and approvals by the Administrative Agent may be
made and transmitted pursuant to electronic codes and security measures mutually
agreed upon and established by and among such Borrower, the Administrative Agent
and the relevant L/C Issuer. Subject to subsection 3.1(a), the Administrative
Agent shall cause the requested Letter of Credit to be issued by the relevant
L/C Issuer on the date specified in such notice, with the original of the
relevant Letter of Credit being delivered to the beneficiary and a copy thereof
being furnished to the relevant Borrower.

            3.6 Obligations Absolute. The obligations of the Borrowers to
reimburse the Administrative Agent and Lenders for payments made with respect to
any L/C Obligation shall be absolute, unconditional and irrevocable, without
necessity of presentment, demand, protest or other formalities, and the



                                      -41-

<pg$pcn>
obligations of each Lender to make payments to the Administrative Agent (or to
any L/C Issuer, as the case may be) with respect to Letters of Credit shall be
unconditional and irrevocable. Such obligations of the Borrowers and the Lenders
shall be paid strictly in accordance with the terms hereof under all
circumstances including the following circumstances:

                (a) any lack of validity or enforceability of any Letter of 
      Credit, this Agreement, the other Loan Documents or any other agreement;

                (b) the existence of any claim, set-off, defense or other right
      which any Borrower or any of its respective Affiliates or any Lender may
      at any time have against a beneficiary or any transferee of any Letter of
      Credit (or any Persons or entities for whom any such transferee may be
      acting), the Administrative Agent, any Lender, or any other Person,
      whether in connection with this Agreement, any Letter of Credit, the
      transactions contemplated herein or therein or any unrelated transaction
      (including any underlying transaction between any Borrower or any of its
      respective Affiliates and the beneficiary for which any Letter of Credit
      was procured);

                (c) any draft, demand, certificate or any other document
      presented under any Letter of Credit proving to be forged, fraudulent,
      invalid or insufficient in any respect or any statement therein being
      untrue or inaccurate in any respect;

                (d) payment by the Administrative Agent or any L/C Issuer under
      any Letter of Credit or guaranty thereof against presentation of a demand,
      draft or certificate or other document which does not comply with the
      terms of such Letter of Credit or such guaranty;

                (e) any other circumstance or happening whatsoever, which is 
      similar to any of the foregoing; or

                (f) the fact that a Default or an Event of Default shall have 
      occurred and be continuing.

            3.7 Nature of Lenders' Duties. (a) As between the Administrative
Agent and any Lender and the Borrowers, the Borrowers assume all risks of the
acts and omissions of, or misuse of any Letter of Credit by beneficiaries of any
Letter of Credit. In furtherance and not in limitation of the foregoing, to the
fullest extent permitted by law, neither the Administrative Agent nor any Lender
shall be responsible: (i) for the form, validity, sufficiency, accuracy,
genuineness or legal effect of any document issued by any party (other than the
Administrative Agent or such Lender, as the case may be) in connection with the
application for and issuance of any Letter of Credit, even if it should in fact
prove to be in any or all 


                                      -42-

<pg$pcn>
respects invalid, insufficient, inaccurate, fraudulent or forged; (ii) for the
validity or sufficiency of any instrument transferring or assigning or
purporting to transfer or assign any Letter of Credit or the rights or benefits
thereunder or proceeds thereof, in whole or in part, which may prove to be
invalid or ineffective for any reason; (iii) for failure of the beneficiary of
any Letter of Credit to comply fully with conditions required in order to demand
payment under such Letter of Credit, provided that, in the case of any payment
by the Administrative Agent under any Letter of Credit or guaranty thereof, the
Administrative Agent shall be liable to the extent such payment was made solely
as a result of its gross negligence or willful misconduct (as finally determined
by a court of competent jurisdiction) in determining that the demand for payment
under such Letter of Credit or guaranty thereof complies on its face with any
applicable requirements for a demand for payment under such Letter of Credit or
guaranty thereof; (iv) for errors, omissions, interruptions or delays in
transmission or delivery of any messages, by mail, cable, telegraph, telex or
otherwise, whether or not they be in cipher (other than to the extent caused by
the gross negligence or willful misconduct of the Administrative Agent or such
Lender, as the case may be); (v) for errors in interpretation of technical terms
based on knowledge or lack of knowledge of any usage of any particular trade;
(vi) for any loss or delay in the transmission or otherwise of any document
required in order to make a payment under any Letter of Credit or guaranty
thereof or of the proceeds thereof (other than to the extent caused by the gross
negligence or willful misconduct of the Administrative Agent or such Lender, as
the case may be); (vii) for the credit of the proceeds of any drawing under any
Letter of Credit or guaranty thereof; and (viii) for any consequences arising
from causes beyond the control of the Administrative Agent or any Lender. None
of the above shall affect, impair or prevent the vesting of any of the
Administrative Agent's or any Lender's rights or powers hereunder or under this
Agreement.

            (b) Nothing contained herein shall be deemed to limit or to expand
any waivers, covenants or indemnities made by the Borrowers in favor of any L/C
Issuer in any letter of credit application, reimbursement agreement or similar
document, instrument or agreement between or among the Borrowers and such L/C
Issuer.

            3.8 Application. To the extent that any provision of any Application
related to any Letter of Credit is inconsistent with the provisions of this
Section 3, the provisions of this Section 3 shall apply.

      SECTION 4.        [INTENTIONALLY OMITTED]


                                      -43-

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      SECTION 5. AMOUNT AND TERMS OF SWING LINE SUB-FACILITY

            5.1 Swing Line Commitments. (a) Subject to the terms and conditions
hereof, the Swing Line Lender agrees to make swing line loans (the "Swing Line
Loans") to each Borrower on any Business Day from time to time during the
Commitment Period in an aggregate principal amount at any one time outstanding
not to exceed, in the aggregate for all Swing Line Loans then outstanding to all
Borrowers, $10,000,000; provided that in no event may the amount of any
borrowing of Swing Line Loans by any Borrower (i) exceed the aggregate Available
Commitments of all Lenders (after giving effect to the use of proceeds thereof),
(ii) cause the Aggregate Outstanding Extensions of Credit owing by such Borrower
to all Lenders to exceed the Borrowing Base then in effect with respect to such
Borrower or (iii) cause the Aggregate Outstanding Extensions of Credit then
owing by all Borrowers to all Lenders to exceed the Maximum Available Credit.
Amounts borrowed by a Borrower under this subsection 5.1 may be repaid and, to
but excluding the Termination Date, reborrowed.

            (b) All Swing Line Loans shall be made and maintained as Base Rate
Loans and, notwithstanding the provisions of subsection 6.6(a), shall not be
entitled to be converted into Eurodollar Loans; provided that nothing contained
in this subsection 5.1 shall prohibit the conversion into Eurodollar Loans of
any Revolving Credit Loans the proceeds of which are utilized to refund Swing
Line Loans.

            5.2 Swing Line Loan Note. The Swing Line Loans made by the Swing
Line Lender to a Borrower shall be evidenced by a promissory note of such
Borrower, substantially in the form of Exhibit B, with appropriate insertions as
to payor and date (the "Swing Line Note"), payable to the order of the Swing
Line Lender and representing the obligations of such Borrower to pay the
aggregate unpaid principal amount of the Swing Line Loans, with interest
thereon, as prescribed in subsection 6.8. The Swing Line Lender is hereby
authorized to record the date and amount of each Swing Line Loan made by the
Swing Line Lender to such Borrower and the date and amount of each payment or
prepayment of principal thereof, on its books and records maintained for such
purpose, and such recordation shall constitute prima facie evidence of the
accuracy of the information so recorded; provided that the failure of the Swing
Line Lender to make such recordation (or any error in recordation) shall not
affect the obligations of such Borrower hereunder or under its Swing Line Note.
The Swing Line Note of each Borrower shall (a) be dated the Original Closing
Date, (b) be stated to mature on the Termination Date and (c) provide for the
payment of interest in accordance with subsection 6.8.

            5.3 Procedure for Swing Line Loan Borrowing. A Borrower may borrow
under the Swing Line Commitment during the Commitment Period on any Business
Day; provided that such Borrower shall give the Administrative Agent irrevocable
notice


                                      -44-

<pg$pcn>
(which notice must be received by the Administrative Agent prior to 11:00 A.M.,
New York City time), on the requested borrowing date (which shall be a Business
Day) specifying the amount of each requested Swing Line Loan, which shall be in
a minimum amount of $500,000 or a multiple of $100,000 in excess thereof. Upon
receipt of any such notice from a Borrower, the Administrative Agent shall
promptly notify the Swing Line Lender thereof. The Swing Line Lender will make
the amount of its Swing Line Loan available to the Administrative Agent, for the
account of the relevant Borrower, at the Administrative Agent's Account prior to
2:00 P.M., New York City time, on the Borrowing Date requested by such Borrower
in funds immediately available to the Administrative Agent. The proceeds of each
Swing Line Loan will then be made immediately available to such Borrower by the
Administrative Agent making a wire transfer of the amount made available to the
Administrative Agent by the Swing Line Lender, in like funds as received by the
Administrative Agent, to such Borrower's account listed on Schedule IX or such
other account as may be notified by the Borrower to the Administrative Agent
from time to time in writing.

            5.4 Refunding of Swing Line Loans. (a) The Administrative Agent, at
any time in its sole and absolute discretion, may (or, upon the request of the
Swing Line Lender, shall) on behalf of the relevant Borrower (which hereby
irrevocably directs the Administrative Agent to act on its behalf) request that
each Lender make a Revolving Credit Loan in an amount equal to such Lender's
Commitment Percentage of the then outstanding principal amount of Swing Line
Loans (the "Refunded Swing Line Loans") owing by such Borrower on the date such
notice is given (regardless of whether the Refunded Swing Line Loans comply with
the minimum borrowing provisions of subsection 2.5); provided that, at any time
as there shall be a Swing Line Loan of any Borrower outstanding for more than
seven Business Days, the Administrative Agent shall, on the eighth Business Day
after the making of such Swing Line Loan, request (on behalf of such Borrower,
which hereby irrevocably directs the Administrative Agent to act on its behalf)
that each Lender make a Revolving Credit Loan to such Borrower in an amount
equal to such Lender's Commitment Percentage of the principal amount of such
outstanding Swing Line Loan (regardless of whether Refunded Swing Line Loans
comply with the minimum borrowing provisions of subsection 2.5). In the event
that the Swing Line Lender makes its request for refunding of the Swing Line
Loans, each Lender shall make the proceeds of its Revolving Credit Loan
available in immediately available funds to the Administrative Agent, for the
benefit of the Swing Line Lender, at the Administrative Agent's Account prior to
11:00 A.M., New York City time, on the first Business Day following such request
(or, if such request is made prior to 10:00 A.M., New York City time, on any
date, then the proceeds of such Revolving Credit Loans shall instead be so made
available to the Administrative Agent prior to 2:00 P.M., New York City time, on
the date of such request); provided, however, that in the event that any of the
events described in Section


                                      -45-

<pg$pcn>
12(g) (i) or (ii) shall have occurred and be continuing, the Lenders shall not
make such Revolving Credit Loans and the provisions of subsection 5.4(b) shall
apply.

            (b) If, prior to the making of a Revolving Credit Loan pursuant to
subsection 5.4(a), one of the events described in Section 12(g) (i) or (ii)
shall have occurred and be continuing, each Lender will, on the date such
Revolving Credit Loan was to have been made, purchase from the Swing Line Lender
an undivided participating interest in the Swing Line Loan to be refunded in an
amount equal to its Commitment Percentage of such Swing Line Loan to be
refunded. Each Lender will immediately transfer to the Administrative Agent, in
immediately available funds, the amount of its participation.

            (c) Whenever, at any time after the Swing Line Lender has received
from any Lender such Lender's participating interest in a Swing Line Loan to be
refunded pursuant to subsection 5.4(a), the Swing Line Lender receives any
payment on account thereof, the Swing Line Lender will distribute to such Lender
its participating interest in such amount (appropriately adjusted, in the case
of interest payments, to reflect the period of time during which such Lender's
participating interest was outstanding and funded) in like funds as received;
provided, however, that in the event that such payment received by the Swing
Line Lender is required to be returned, such Lender will return to the Swing
Line Lender any portion thereof previously distributed by the Swing Line Lender
to it in like funds as such payment is required to be returned by the Swing Line
Lender.

            5.5 Unconditional Obligation to Refund Swing Line Loans. (a) Each
Lender's obligation to make Revolving Credit Loans and to purchase participating
interests in accordance with subsections 5.4(a) and 5.4(b) above shall be
absolute and unconditional and shall not be affected by any circumstance,
including, without limitation, (i) any set-off, counterclaim, recoupment,
defense or other right which such Lender may have against the Swing Line Lender,
any Borrower or any other Person for any reason whatsoever; (ii) the occurrence
or continuance of any Default or Event of Default; (iii) any adverse change in
the condition (financial or otherwise) of any Borrower or any other Person; (iv)
any breach of this Agreement by any Borrower or any other Person; (v) any
inability of any Borrower to satisfy the conditions precedent to borrowing set
forth in this Agreement on the date upon which such Revolving Credit Loan is to
be made or participating interest is to be purchased or (vi) any other
circumstance, happening or event whatsoever, whether or not similar to any of
the foregoing. If any Lender does not make available to the Administrative Agent
the amount required pursuant to subsections 5.4(a) or 5.4(b) above, as the case
may be, the Administrative Agent shall be entitled to recover such amount on
demand from such Lender, together with interest thereon for each day from the
date of non-payment until such amount is


                                      -46-

<pg$pcn>
paid in full at the Federal Funds Effective Rate for the first two Business Days
and at the Base Rate thereafter.

            5.6 Use of Proceeds of Swing Line Loans. The proceeds of Swing Line
Loans hereunder shall be used by the Borrowers for any purpose for which the
proceeds of Revolving Credit Loans may be used.


      SECTION 6. PROVISIONS RELATING TO CERTAIN EXTENSIONS OF CREDIT; FEES AND
                 PAYMENTS

            6.1 Commitment Fee. The Borrowers agree to pay to the Administrative
Agent, for the account of each Lender, a commitment fee for the period from and
including the first day of the Commitment Period to the Termination Date,
computed at the rate of 0.375% per annum on the average daily amount of the
Available Commitment of such Lender during the period for which payment is made
(computed (a) as to all Lenders other than the Swing Line Lender, without
reduction for such Lender's Commitment Percentage of any Swing Line Loans
outstanding during such period and (b) as to the Swing Line Lender, with
reduction for the full amount of the Swing Line Loans outstanding during such
period), payable quarterly in arrears on the last day of each March, June,
September and December and on the Termination Date or such earlier date as the
Commitments shall terminate as provided herein, commencing on the first of such
dates to occur after the Closing Date.

            6.2 Termination or Reduction of Commitments. (a) The Borrowers shall
have the right, upon not less than five Business Days' notice to the
Administrative Agent, to terminate the Commitments or, from time to time, to
reduce the amount of the Commitments; provided that no such termination or
reduction shall be permitted if, after giving effect to any such reduction
and/or termination and to any prepayments of the Revolving Credit Loans made on
the effective date thereof, the Aggregate Outstanding Extensions of Credit then
outstanding from all Lenders to all Borrowers would exceed the Maximum Available
Credit. Any such reduction shall be in an amount equal to $5,000,000 or a whole
multiple of $500,000 in excess thereof and shall reduce permanently the
Commitments then in effect. Notwithstanding anything to the contrary contained
herein, in the event that the Aggregate Commitment is reduced (whether
voluntarily or otherwise) to an amount less than $25,000,000, the Commitments
shall immediately terminate.

            6.3 Optional Prepayments. (a) Each Borrower may at any time and from
time to time prepay the Loans that are not Swing Line Loans (subject to the
provisions of subsection 6.16, in the case of Eurodollar Loans) owing by it, in
whole or in part, without premium or penalty, upon at least one Business Day's
irrevocable notice to the Administrative Agent (or, in the case of Base Rate
Loans, on same day notice to the extent that


                                      -47-

<pg$pcn>
such notice is delivered to the Administrative Agent prior to 11:00 A.M., New
York City time, on the date of such prepayment) specifying the date and amount
of prepayment. Upon receipt of any such notice, the Administrative Agent shall
promptly notify each Lender thereof. If any such notice is given by a Borrower,
the amount specified in such notice shall be due and payable from the Borrower
which has delivered such notice on the date specified therein, no later than
1:00 P.M., New York City time, together with any amounts payable pursuant to
subsection 6.16. Partial prepayments shall be in an aggregate principal amount
equal to the minimum amounts permitted to be borrowed as set forth in subsection
2.5.

            (b) Each Borrower may at any time and from time to time prepay, in
whole or in part and without premium or penalty, any Swing Line Loans then owing
by it on any Business Day; provided that such Borrower has given irrevocable
notice to the Administrative Agent not later than 1:00 P.M., New York City time,
on the date of such prepayment.

            6.4 Mandatory Prepayments. (a) In the event that the Aggregate
Outstanding Extensions of Credit owing by any Borrower to the Lenders at any
date exceed the Borrowing Base then in effect with respect to such Borrower,
such Borrower shall immediately prepay the Aggregate Outstanding Extensions of
Credit owing by it to the Lenders by the amount of such excess, with such
prepayment being applied, first, to its then outstanding Swing Line Loans,
second, to its then outstanding Revolving Credit Loans and, third, to cash
collateralize its then outstanding L/C Obligations by the amount of such excess.

            (b) In the event that the Aggregate Outstanding Extensions of Credit
owing by all Borrowers to all Lenders exceed the Maximum Available Credit, the
Borrowers shall immediately prepay the Aggregate Outstanding Extensions of
Credit by the amount of such excess, with such prepayment being applied, first,
to the then outstanding Swing Line Loans, second, to the then outstanding
Revolving Credit Loans and, third, to cash collateralize the then outstanding
L/C Obligations by the amount of such excess.

            (c) The Administrative Agent shall prepay the Aggregate Outstanding
Extensions of Credit with the proceeds of amounts received by it pursuant to the
Lock Box Agreements to the extent contemplated by the provisions of the
applicable Security Agreements and Lock Box Agreements. Any amounts that,
pursuant to the provisions of the applicable Security Agreements and Lock Box
Agreements, are applied to prepay the Aggregate Outstanding Extensions of Credit
shall be applied in the order specified in this subsection 6.4(c) and, provided,
that, so long as there shall have occurred and be continuing any Event of
Default under Section 12(a)(ii) as a result of a failure to pay (x) interest due
on the Revolving Credit Loans, (y) commitment fees on the Commitments or (z)
fees or commissions related to any Letter of


                                      -48-

<pg$pcn>
Credit, proceeds of amounts received by it pursuant to the Lock Box Agreements
shall be applied first, to the extent necessary, to cure such Event of Default,
and provided, further, that after an acceleration pursuant to Section 12
proceeds of amounts received by it pursuant to the Lock Box Agreements shall be
applied, first, to then outstanding Swing Line Loans, second, to then
outstanding Revolving Credit Loans and third, to cash collateralize then
outstanding L/C Obligations.

            (d) Notwithstanding anything to the contrary contained in this
Agreement, in the event that a Borrower would be required to pay amounts
pursuant to subsection 6.16 as a direct result of any prepayment made pursuant
to this subsection 6.4, then either:

            (i) the amount so prepaid may be immediately reborrowed by any other
      Borrower (subject to satisfaction by such other Borrower of all conditions
      to borrowing set forth in this Agreement) at the Eurodollar Rate which was
      in effect for the amounts so prepaid plus 2.75% (and with an Interest
      Period ending on the date upon which the Interest Period for the amounts
      so prepaid was scheduled to end), and no Lender shall be entitled to
      amounts which otherwise would be owing pursuant to said subsection 6.16;
      or

            (ii) during such time as no Event of Default has occurred and is
      continuing or otherwise with the consent of the Majority Lenders, such
      Borrower may deposit the amount of such payment in a cash collateral
      account maintained by the Administrative Agent (for the benefit of the
      holders of the Obligations) until the earlier of (A) the last day of the
      applicable Interest Period and (B) unless the Majority Lenders shall
      otherwise consent, the date of the occurrence of an Event of Default, on
      which earlier date such prepayment shall be made. Each Borrower hereby
      grants to the Administrative Agent a first priority security interest in
      all amounts from time to time on deposit in the cash collateral account
      maintained with respect to it, as security for the payment of the
      Obligations of such Borrower and expressly waives all rights (which rights
      each Borrower hereby acknowledges and agrees are vested exclusively in the
      Administrative Agent) to exercise dominion or control over any such
      amounts. Amounts from time to time on deposit in such a cash collateral
      account shall be invested by the Administrative Agent in such Cash
      Equivalents as the relevant Borrower may from time to time specify.

            6.5  [INTENTIONALLY OMITTED]

            6.6 Conversion and Continuation Options. (a) Each Borrower may elect
from time to time to convert Eurodollar Loans owing by it to Base Rate Loans, by
giving the Administrative Agent at least three Business Days' prior irrevocable
notice of such election, provided that any such conversion of Eurodollar Loans
may only be made on the last day of an Interest Period with


                                      -49-

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respect thereto. Each Borrower may elect from time to time to convert Base Rate
Loans which are Revolving Credit Loans owing by it to Eurodollar Loans by giving
the Administrative Agent at least three Business Days' prior irrevocable notice
of such election. Any such notice of conversion to Eurodollar Loans shall
specify the length of the initial Interest Period or Interest Periods therefor.
Upon receipt of any such notice the Administrative Agent shall promptly notify
each Lender thereof. All or any part of outstanding Eurodollar Loans and Base
Rate Loans which are Revolving Credit Loans may be converted as provided herein,
provided that (i) no Loan may be converted into a Eurodollar Loan when any Event
of Default has occurred and is continuing and the Administrative Agent has, or
the Majority Lenders have, determined not to permit such a conversion in its or
their sole discretion and (ii) no Loan may be converted into a Eurodollar Loan
after the date that is one month prior to the Termination Date.

            (b) Any Eurodollar Loans may be continued as such upon the
expiration of the then current Interest Period with respect thereto by the
relevant Borrower giving notice to the Administrative Agent, in accordance with
the applicable provisions of the term "Interest Period" set forth in subsection
1.1, of the length of the next Interest Period to be applicable to such Loans,
provided that no Eurodollar Loan may be continued as such (i) when any Event of
Default has occurred and is continuing and the Administrative Agent has, or the
Majority Lenders have, determined not to permit such a continuation in its or
their sole discretion or (ii) after the date that is one month prior to the
Termination Date and provided, further, that if the relevant Borrower shall fail
to give any required notice as described above in this subsection 6.6(b) or if
such continuation is not permitted pursuant to the preceding proviso such Loans
shall be automatically converted to Base Rate Loans on the last day of such then
expiring Interest Period.

            6.7 Minimum Amounts of Tranches. All borrowings, prepayments,
conversions and continuations of Loans hereunder and all selections of Interest
Periods hereunder shall be in such amounts and be made pursuant to such
elections so that, after giving effect thereto, the aggregate principal amount
of the Eurodollar Loans comprising each Tranche shall be equal to $5,000,000 or
a whole multiple of $500,000 in excess thereof and there shall not be more than
12 Tranches at any one time outstanding from all Borrowers in the aggregate.

            6.8 Interest Rates and Payment Dates. (a) Each Eurodollar Loan shall
bear interest for each day during each Interest Period with respect thereto at a
rate per annum equal to the Eurodollar Rate determined for such day plus 2.75%.

            (b) Each Base Rate Loan (including, without limitation, each Swing
Line Loan) shall bear interest for each day at a rate per annum equal to the
Base Rate plus 1.50%.


                                      -50-

<pg$pcn>
            (c) If all or a portion of (i) the principal amount of any Loan is
not paid when such amount becomes due (whether at the stated maturity, by
acceleration or otherwise) or (ii) any interest payable thereon, any commitment
fee or any fee or commission relating to any Letter of Credit hereunder is not
paid within three days after such interest, commitment fee or other fee or
commission becomes due hereunder (whether at the stated maturity, by
acceleration or otherwise), such overdue amount shall bear interest at a rate
per annum which is the rate described in clause (b) of this subsection 6.8 plus
2.00%, in each case from the date upon which such amount becomes due hereunder
to the date upon which such amount is paid in full (as well after as before
judgment).

            (d) Interest shall be payable in arrears on each Interest Payment
Date, provided that interest accruing pursuant to subsection 6.8(c) shall be
payable from time to time on demand.

            6.9 Computation of Interest and Fees. (a) All interest payable on
account of Eurodollar Loans and all fees with respect to Letters of Credit
hereunder shall be calculated on the basis of a 360-day year for the actual days
elapsed, and all other interest and fees payable hereunder shall be calculated
on the basis of a 365- (or 366- as the case may be) day year for the actual days
elapsed. The Administrative Agent shall as soon as practicable notify the
relevant Borrower and the Lenders of each determination of a Eurodollar Rate.
Any change in the interest rate on a Loan resulting from a change in the Base
Rate or the Eurocurrency Reserve Requirements shall become effective as of the
opening of business on the day upon which such change becomes effective. The
Administrative Agent shall as soon as practicable notify the relevant Borrowers
and the Lenders of the effective date and the amount of each such change in
interest rate. In the absence of specific instructions from such Borrower, all
fees and expenses payable by the Borrowers hereunder shall be allocated among
the Borrowers in such proportions as the Administrative Agent shall from time to
time determine.

            (b) Each determination of an interest rate by the Administrative
Agent pursuant to any provision of this Agreement shall be conclusive and
binding on the Borrowers and the Lenders in the absence of manifest error. The
Administrative Agent shall, at the request of a Borrower, deliver to such
Borrower a statement showing the quotations used by the Administrative Agent in
determining any interest rate pursuant to subsection 6.8.

            6.10 Inability to Determine Interest Rate. If prior to the first day
of any Interest Period:

            (a) the Administrative Agent shall have determined (which
      determination shall be conclusive and binding upon the Borrowers) that, by
      reason of circumstances affecting the relevant market, adequate and
      reasonable means do not


                                      -51-

<pg$pcn>
      exist for ascertaining the Eurodollar Rate for such Interest Period, or

            (b) the Administrative Agent shall have received notice from the
      Majority Lenders that the Eurodollar Rate determined or to be determined
      for such Interest Period will not adequately and fairly reflect the cost
      to such Lenders (as conclusively certified by such Lenders) of making or
      maintaining their affected Eurodollar Loans during such Interest Period,

the Administrative Agent shall give telecopy or telephonic notice thereof to the
Borrowers and the Lenders as soon as practicable thereafter. If such notice is
given (x) any Eurodollar Loans requested to be made on the first day of such
Interest Period shall be made as Base Rate Loans, (y) any Loans that were to
have been converted on the first day of such Interest Period to Eurodollar Loans
shall be converted to or continued as Base Rate Loans and (z) any outstanding
Eurodollar Loans shall be converted, on the first day of such Interest Period,
to Base Rate Loans. Until such notice has been withdrawn by the Administrative
Agent, no further Eurodollar Loans shall be made or continued as such, nor shall
any Borrower have the right to convert Loans to Eurodollar Loans.

            6.11 Pro Rata Treatment and Payments. (a) Each borrowing (other than
of Swing Line Loans) by a Borrower from the Lenders hereunder, any conversion or
continuation pursuant to subsection 6.6 and any reduction of the Commitments of
the Lenders shall be made pro rata according to the respective Commitment
Percentages of the Lenders. Each payment by a Borrower on account of any
commitment fee hereunder shall be made pro rata according to the respective
Commitment Percentages of all Lenders, except that the commitment fee payable to
the Swing Line Lender shall be calculated in accordance with the provisions of
subsection 6.1. Each payment (including each prepayment) by a Borrower on
account of principal of and interest on the Loans (other than (i) Swing Line
Loans and (ii) payments from the proceeds of Collateral, which shall be applied
in accordance with the provisions of the relevant Security Documents and
subsections 6.4(c) and 14.14(d)) shall be made pro rata according to the
respective outstanding principal amounts of the Loans then held by the Lenders.
All payments (including prepayments) to be made by a Borrower hereunder and
under the Notes, whether on account of principal, interest, fees or otherwise,
shall be made without set-off or counterclaim and shall be made prior to 1:00
P.M., New York City time, on the due date thereof to the Administrative Agent,
for the account of the Lenders or the Swing Line Lender, as the case may be, at
the Administrative Agent's Account, in Dollars and in immediately available
funds. The Administrative Agent shall distribute such payments to the Lenders or
to the Swing Line Lender, as the case may be, promptly upon receipt in like
funds as received. If any payment hereunder (other than payments on the
Eurodollar Loans) becomes due and payable on a


                                      -52-

<pg$pcn>
day other than a Business Day, such payment shall be extended to the next
succeeding Business Day, and, with respect to payments of principal, interest
thereon shall be payable at the then applicable rate during such extension. If
any payment on a Eurodollar Loan becomes due and payable on a day other than a
Business Day, the maturity thereof shall be extended to the next succeeding
Business Day unless the result of such extension would be to extend such payment
into another calendar month, in which event such payment shall be made on the
immediately preceding Business Day.

            (b) Unless the Administrative Agent shall have been notified in
writing by any Lender prior to a borrowing that such Lender will not make the
amount that would constitute its Commitment Percentage of such borrowing
available to the Administrative Agent, the Administrative Agent may assume that
such Lender, is making such amount available to the Administrative Agent, and
the Administrative Agent may, in reliance upon such assumption, make available
to the relevant Borrower a corresponding amount. If such amount is not made
available to the Administrative Agent by the required time on the Borrowing Date
therefor, such Lender shall pay to the Administrative Agent, on demand, such
amount with interest thereon at a rate equal to the daily average Federal Funds
Effective Rate for the period until such Lender makes such amount immediately
available to the Administrative Agent. A certificate of the Administrative Agent
submitted to any Lender with respect to any amounts owing under this subsection
6.11(b) shall be conclusive in the absence of manifest error. If such Lender's
Commitment Percentage of such borrowing is not made available to the
Administrative Agent by such Lender within three Business Days of such Borrowing
Date, the Administrative Agent shall also be entitled to recover such amount
with interest thereon at the rate per annum applicable to Base Rate Loans which
are Revolving Credit Loans hereunder, on demand, from such Lender.
Notwithstanding anything to the contrary contained herein, the failure of any
Lender to make any Loan to be made by it hereunder on any Borrowing Date shall
not relieve any other Lender of its obligation to make its Loan on such
Borrowing Date, but no Lender shall be responsible for the failure of any other
Lender to make the Loan to be made by such other Lender on such Borrowing Date.

            6.12 Illegality. Notwithstanding any other provision herein, if,
subsequent to the Closing Date, the adoption of or any change in any Requirement
of Law or in the interpretation or application thereof shall make it unlawful
for any Lender to make or maintain Eurodollar Loans as contemplated by this
Agreement, (a) the commitment of such Lender hereunder to make Eurodollar Loans,
continue Eurodollar Loans as such and convert Base Rate Loans to Eurodollar
Loans shall forthwith be canceled and (b) such Lender's Loans then outstanding
as Eurodollar Loans, if any, shall be converted automatically to Base Rate Loans
on the respective last days of the then current Interest Periods with respect to
such Loans or within such earlier period as required


                                      -53-

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by law. If any such conversion of a Eurodollar Loan occurs on a day which is not
the last day of the then current Interest Period with respect thereto, each
Borrower shall pay to such Lender such amounts, if any, as may be required
pursuant to subsection 6.16.

            6.13 Requirements of Law. (a) If the adoption of or any change in
any Requirement of Law or in the interpretation or application thereof or
compliance by any Lender (or any corporation controlling any Lender) with any
request or directive (whether or not having the force of law) from any central
bank or other Governmental Authority made subsequent to the Closing Date:

            (i) shall subject any Lender (or controlling corporation) to any tax
      of any kind whatsoever with respect to this Agreement, any Note, any
      Letter of Credit, any Application or any Eurodollar Loan made by it, or
      change the basis of taxation of payments to such Lender (or controlling
      corporation) in respect thereof (except for Taxes covered by subsection
      6.14 and changes in the rate of tax on the overall taxable income of such
      Lender (or controlling corporation) or franchise tax, if applicable, in
      lieu thereof);

            (ii) shall impose, modify or hold applicable any reserve, special
      deposit, compulsory loan or similar requirement against assets held by,
      deposits or other liabilities in or for the account of, advances, loans or
      other extensions of credit by, or any other acquisition of funds by, any
      office of such Lender (or controlling corporation) which is not otherwise
      included in the determination of the Eurodollar Rate; or

            (iii) shall impose on such Lender (or controlling corporation) any
      other condition;

and the result of any of the foregoing is to increase the cost to such Lender
(or controlling corporation), by an amount which it deems to be material, of
making, converting into, continuing or maintaining Eurodollar Loans or issuing
or participating in Letters of Credit or to reduce any amount receivable
hereunder in respect thereof, then, in any such case, the relevant Borrower
shall promptly pay such Lender upon its demand, any additional amounts necessary
to compensate such Lender (or controlling corporation) for such additional or
increased cost or reduced amount receivable. If any Lender determines that it is
entitled to claim any additional amounts pursuant to this subsection 6.13, then,
promptly following such determination, it shall notify the relevant Borrower,
through the Administrative Agent, of the event by reason of which it has become
so entitled. A certificate as to any additional amounts payable pursuant to this
subsection 6.13 submitted by such Lender through the Administrative Agent, to
such Borrower shall be conclusive in the absence of manifest error. This
covenant shall survive the termination of this


                                      -54-

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Agreement and the payment of the Notes and all other amounts payable hereunder.

            (b) If any Lender shall have determined that the adoption of or any
change in any Requirement of Law regarding capital adequacy or in the
interpretation or application thereof or compliance by such Lender or any
corporation controlling such Lender with any request or directive regarding
capital adequacy (whether or not having the force of law) from any Governmental
Authority made subsequent to the Closing Date does or shall have the effect of
reducing the rate of return on such Lender's or such corporation's capital as a
consequence of its obligations hereunder or under any Letter of Credit to a
level below that which such Lender or such corporation could have achieved but
for such change or compliance (taking into consideration such Lender's or such
corporation's policies with respect to capital adequacy) by an amount deemed by
such Lender to be material, then from time to time, after submission by such
Lender to the Borrowers (with a copy to the Administrative Agent) of a written
request therefor, the Borrowers shall pay to such Lender such additional amount
or amounts as will compensate such Lender for such reduction.

            6.14 Taxes. (a) All payments made by the Borrowers and Guarantors
under this Agreement and the Notes shall be made free and clear of, and without
reduction or withholding or liability for or on account of, any present or
future income, stamp or other taxes, levies, imposts, duties, charges, fees,
deductions or withholdings, now or hereafter imposed, levied, collected,
withheld or assessed by any Governmental Authority excluding, in the case of the
Collateral Agent, the Administrative Agent and each Lender, (i) net income,
capital, doing business, and franchise and similar taxes imposed upon the
Collateral Agent, the Administrative Agent or such Lender by the laws of the
jurisdiction in which the Collateral Agent, the Administrative Agent or such
Lender is organized or any political subdivision or taxing authority thereof or
therein, or by any jurisdiction in which any Lender's or lending office or, in
the case of a Lender, Eurodollar lending office, as the case may be, is located
or any political subdivision or taxing authority thereof or therein, (ii) any
tax, levy, impost, duty, charge, fee, deduction or withholding that would not
have been imposed but for the existence of any present or former connection
between the Collateral Agent, the Administrative Agent or such Lender, as
relevant (or between shareholders of the Collateral Agent, the Administrative
Agent or such Lender), and the Governmental Authority imposing such tax, levy,
impost, duty, charge, fee, deduction or withholding including, without
limitation, the Collateral Agent, the Administrative Agent or such Lender (or
shareholders thereof) being or having been a resident thereof, being or having
been present therein, being or having been engaged in a trade or business
therein, or having had a permanent establishment or fixed place of business
therein (but excluding a connection arising from the Collateral Agent's, the


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Administrative Agent's or such Lender's execution or enforcement of or
performance of its obligations under or receipt of payment under the Loan
Documents), and (iii) any withholding of any United States federal income tax or
backup withholding that would not have been required but for a failure by any
Lender to timely deliver to the Borrowers and the Administrative Agent such
forms, certificates, statements or other documents pursuant to the requirements
of subsection 6.14(b) evidencing such Lender's eligibility for an exemption from
or a reduced rate of such tax (all such non-excluded taxes, levies, imposts,
deductions, charges or withholdings being hereinafter called "Taxes"). If any
Taxes are required to be withheld from any amounts payable or paid to the
Collateral Agent, the Administrative Agent or any Lender hereunder, the amounts
so payable or paid to the Collateral Agent, the Administrative Agent or such
Lender shall be increased to the extent necessary to yield thereto (after
payment of all Taxes) interest or any such other amounts payable hereunder at
the rates or in the amounts specified in this Agreement. Whenever any Taxes are
payable by any Borrower or Guarantor, as promptly as possible thereafter, such
Borrower or Guarantor shall send to the Administrative Agent for its own account
or for the account of the Collateral Agent or such Lender a certified copy of an
original official receipt received by such Borrower or Guarantor showing payment
thereof. If any Borrower or Guarantor fails to pay any Taxes when due to the
appropriate taxing authority or fails to remit to the Administrative Agent any
payments due under this subsection 6.14 or the required receipts or other
required documentary evidence, the Borrowers and the Guarantors shall indemnify
the Collateral Agent, the Administrative Agent and each Lender from any
incremental taxes, interest or penalties that may become payable by the
Collateral Agent, the Administrative Agent or any Lender as a result of any such
failure.

            (b) Prior to the first date a payment is to be made under this
Agreement (or, in the case of any Assignee, prior to the first date upon which
it is to receive a payment under this Agreement), each Lender that is not
incorporated under the laws of the United States of America or a state thereof
agrees that it will deliver to HCNA and the Administrative Agent (i) two duly
completed and executed copies of United States Internal Revenue Service Form
1001 or 4224 or successor applicable form, as the case may be, certifying in
each case that such Lender is entitled to receive payments under this Agreement
payable to it, without deduction or withholding of any United States federal
income taxes, and (ii) a duly completed and executed Internal Revenue Service
Form W-8 or W-9 or successor applicable form, as the case may be, to establish
an exemption from United States backup withholding tax. Each Lender which
delivers to HCNA and the Administrative Agent a Form 1001 or 4224 and Form W-8
or W-9 pursuant to the preceding sentence further undertakes to deliver promptly
to HCNA and the Administrative Agent two further copies of Form 1001 or 4224 and
Form W-8 or W-9, or successor applicable forms, or other manner of
certification, as the case may be, (x)


                                      -56-

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upon request by HCNA or the Administrative Agent, (y) on or before the date upon
which any such previously delivered form expires or becomes obsolete and (z)
after the occurrence of any event requiring a change in the most recent form
previously delivered by it to HCNA or the Administrative Agent, and such
extensions or renewals thereof as may reasonably be requested by HCNA or the
Administrative Agent, certifying in the case of a Form 1001 or 4224 that such
Lender is entitled to receive payments under this Agreement without deduction or
withholding of any United States federal income taxes, unless in any such cases
an event (including, without limitation, any change in treaty, law or
regulation) has occurred prior to the date on which any such delivery would
otherwise be required which renders all such forms inapplicable or which would
prevent such Lender from duly completing and delivering any such letter or form
with respect to it and such Lender advises HCNA that it is not capable of
receiving payments without any deduction or withholding of United States federal
income tax, and in the case of a Form W-8 or W-9, establishing an exemption from
United States backup withholding tax.

            (c) In the event that any Borrower or Guarantor has actual knowledge
that it is required to, or there arises in such Borrower's or Guarantor's
reasonable opinion a substantial likelihood that such Borrower or Guarantor will
be required to, pay an increased amount or otherwise indemnify the Collateral
Agent, the Administrative Agent or any Lender for or on account of any United
States federal income tax pursuant to subsection 6.14(a), such Borrower or
Guarantor will promptly notify the Collateral Agent, the Administrative Agent or
such Lender, as the case may be, of the nature of such tax, and shall furnish
such information to the Collateral Agent, the Administrative Agent or such
Lender with respect to such tax as the Administrative Agent, the Collateral
Agent or such Lender, as the case may be, may reasonably request. In the event
of any knowledge or opinion of such Borrower or Guarantor described in the
preceding sentence, such Borrower or Guarantor, the Collateral Agent, the
Administrative Agent and such Lender shall consult in good faith to determine
what may be required to avoid or reduce the tax, and shall each use reasonable
efforts to avoid or reduce such tax (so long as such effort results in no
material incremental costs to the Collateral Agent, the Administrative Agent or
such Lender, as the case may be).

            (d) If the Collateral Agent, the Administrative Agent or any Lender
is, in its reasonable opinion, able to apply for any tax refund, tax credit, tax
deduction or other reduction in tax by reason of any payment of an increased
amount or other indemnification respecting a Tax paid by any Borrower or
Guarantor under this subsection 6.14, the Collateral Agent, the Administrative
Agent or such Lender, as the case may be, will use reasonable efforts to obtain
such refund, credit, deduction or other reduction, and upon irrevocable receipt
of the benefit thereof, will pay to such Borrower or Guarantor such amount (plus


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any interest accrued or received by the Collateral Agent, the Administrative
Agent or such Lender, as the case may be, by reason of the relevant refund,
credit, deduction or other reduction) as is equal to the net after-tax value to
the Collateral Agent, the Administrative Agent or such Lender in its reasonable
opinion, of such part of such refund, credit, deduction or other reduction as it
considers to be allocable to such Tax; provided, however, that (i) none of the
Collateral Agent, the Administrative Agent nor any Lender shall be obligated by
this subsection 6.14(d) to disclose to such Borrower or Guarantor any
information regarding its tax affairs or computations and (ii) nothing in this
subsection 6.14(d) shall interfere with the right of the Collateral Agent, the
Administrative Agent and each Lender to arrange its tax affairs as it deems
appropriate.

            (e) The agreements in subsections 6.14(a), 6.14(c) and 6.14(d) shall
survive the termination of this Agreement and the payment of the Loans and all
other amounts payable hereunder.

            6.15 Replacement of Claimant. If the Collateral Agent, the
Administrative Agent or any Lender shall make any demand upon any Borrower or
Guarantor for payment under subsection 6.12 or 6.13, or shall give any notice
that it is seeking reimbursement under the provisions of subsection 6.14, then
within 90 days after any such demand or notice, such Borrower or Guarantor may
request that the Collateral Agent, the Administrative Agent or such Lender, as
the case may be, assign at par to one or more financial institutions which is
designated by such Borrower or Guarantor all (but not less than all) of its
obligations, its Commitment and the Loans and other amounts owing to it
hereunder, under the Canadian Credit Agreement (including, without limitation,
in the case of the Collateral Agent and the Administrative Agent, its
obligations as a Lender) no later than the date which is the later to occur of
120 days following the date of such request and the last day of the latest to
expire of the then current Interest Periods applicable to such Loans. In the
event of any such request, the Collateral Agent, the Administrative Agent or the
relevant Lender, as the case may be, shall consummate such assignment to such
financial institution within such time period; provided that (a) such assignment
can be effected in accordance with the provisions of subsection 14.7(c), (b) the
financial institution designated by such Borrower or Guarantor is ready, willing
and able to become an Assignee hereunder, (c) such financial institution has
paid to the


                                      -58-

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Collateral Agent, the Administrative Agent or such Lender, as the case may be,
in immediately available funds the principal of and interest accrued to the date
of such payment on the Loans made by it hereunder and all other amounts owed to
it hereunder (including, without limitation, any amounts owing pursuant to
subsection 6.16) and has assumed the obligations of the Collateral Agent, the
Administrative Agent or such Lender, as the case may be, in respect of
outstanding Swing Line Loans and L/C Obligations and (d) such Borrower or
Guarantor has paid to the Collateral Agent, the Administrative Agent or such
Lender, as the case may be, the amounts demanded by it pursuant to subsection
6.12, 6.13 or 6.14, as the case may be. Upon consummation of such assignment,
the assigning Lender shall be released from all of its obligations hereunder and
shall cease to be a Lender and such Assignee shall thereafter be a Lender for
all purposes hereunder.

            6.16 Indemnity. Each Borrower agrees to indemnify each Lender and to
hold each Lender harmless from any loss or expense which such Lender may sustain
or incur as a consequence of (a) default (other than as a result of the
operation of subsection 6.10) by such Borrower in making a borrowing of,
conversion into or continuation of Eurodollar Loans after such Borrower has
given a notice requesting the same in accordance with the provisions of this
Agreement, (b) default by such Borrower in making any prepayment of any
Eurodollar Loan after such Borrower has given a notice thereof in accordance
with the provisions of this Agreement or (c) subject to the provisions of
subsection 6.4(d), the making of a prepayment of Eurodollar Loans on a day which
is not the last day of an Interest Period with respect thereto. For the purpose
of calculation of all amounts payable to a Lender under this subsection 6.16,
each Lender shall be deemed to have actually funded its relevant Eurodollar Loan
through the purchase of a deposit bearing interest at the Eurodollar Rate in an
amount equal to the amount of such Eurodollar Loan and having a maturity
comparable to the relevant Interest Period and each Lender shall be deemed to
have redeployed such deposits on the date of such default or prepayment by the
sale of such deposits in an amount equal to the amount defaulted upon or prepaid
and having a maturity comparable to the Interest Period with respect thereto;
provided, however, that each Lender may fund and redeploy each of its Eurodollar
Loans in any manner which it sees fit, and the foregoing assumption shall be
utilized only for the calculation of amounts payable under this subsection 6.16.
Such indemnification may include any such loss or expense arising from the
reemployment of funds obtained by it to maintain its Eurodollar Loans hereunder
or from fees payable to terminate the deposits from which such funds were
obtained (but, in any event, excluding any loss of profits or margin applicable
to such Loans), with such Lender being deemed to have "match funded" its
Eurodollar Loans hereunder by purchasing a contract for the deposits from which
such funds were obtained on the first day of the relevant Interest Period. A
certificate of the relevant Lender as to the amounts owing to it pursuant to
this subsection 6.16 shall be conclusive in the absence of manifest error. This
covenant shall survive the termination of this Agreement and the payment of the
Notes and all other amounts payable hereunder.

            6.17 Repayment of Obligations. Each Borrower unconditionally agrees
to pay all outstanding Loans made to it together with accrued interest thereon,
and all other Obligations then owing by it, on the Termination Date.


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      SECTION 7. REPRESENTATIONS AND WARRANTIES

            In order to induce the Administrative Agent, the Collateral Agent
and the Lenders to enter into this Agreement and to induce the Lenders to make
the Loans and issue or participate in the Letters of Credit, HCNA and each
Borrower hereby represents and warrants to the Administrative Agent, the
Collateral Agent and each Lender that:

            7.1 Financial Condition. (a) The consolidated balance sheets of HCNA
and its Subsidiaries as at March 30, 1996 and the related consolidated
statements of income and of cash flows for the fiscal year ended on such date,
reported on by Coopers & Lybrand, copies of which have heretofore been furnished
to each Lender, are complete and correct in all material respects and present
fairly, in all material respects, the consolidated financial condition of HCNA
and its Subsidiaries as at such date, and the consolidated results of their
operations and their cash flows for the fiscal year then ended. The unaudited
consolidated balance sheets of HCNA and its Subsidiaries as at December 28, 1996
and the related unaudited consolidated statements of income and of cash flows
for the nine-month period ended on such date, certified by a Responsible Officer
of HCNA, copies of which have heretofore been furnished to each Lender, present
fairly, in all material respects, the consolidated financial condition of HCNA
and its Subsidiaries as at such date, and the consolidated results of their
operations and their cash flows for the nine-month period then ended (subject to
normal year-end audit adjustments).

            (b) All such financial statements described in this subsection 7.1,
including the related schedules and notes thereto, have been prepared in
accordance with GAAP applied consistently throughout the periods involved
(except as approved by such accountants or Responsible Officer of HCNA, and as
disclosed therein). Neither HCNA nor any of its Subsidiaries had, at the date of
the most recent balance sheet referred to above, any material Guarantee
Obligation, contingent liability or liability for taxes, or any long-term lease
or unusual forward or long-term commitment, including, without limitation, any
interest rate or foreign currency swap or exchange transaction, which is not
reflected in the foregoing statements or in the notes thereto. Except for the
Sale/Leaseback Transaction and the ECMC Transaction, during the period from
March 30, 1996 to and including the Closing Date there has been no sale,
transfer or other disposition by HCNA or any of its Subsidiaries of any material
part of its business or property and no purchase or other acquisition of any
business or property (including any capital stock of any other Person) material
in relation to the consolidated financial condition of HCNA and its Subsidiaries
at March 30, 1996.


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            7.2 No Change. (a) During the period between March 30, 1996 and the
Closing Date, no dividends or other distributions have been declared, paid or
made upon the Capital Stock of HCNA nor has any of the Capital Stock of HCNA
been redeemed, retired, purchased or otherwise acquired for value by HCNA or any
of its Subsidiaries.

            (b) Since March 30, 1996, there has been no development or event
which has had or could reasonably be expected to have a Material Adverse Effect.

            7.3 Corporate Existence; Compliance with Law. Each of HCNA and its
Subsidiaries (a) is duly organized, validly existing and in good standing under
the laws of the jurisdiction of its organization, (b) has the corporate power
and authority, and the legal right, to own and operate its material property, to
lease the material property it operates as lessee and to conduct the business in
which it is currently engaged, (c) is duly qualified as a foreign corporation
and in good standing under the laws of each jurisdiction where its ownership,
lease or operation of property or the conduct of its business requires such
qualification and where the failure to be so qualified (in the aggregate with
all other failures to be so qualified) could not reasonably be expected to have
a Material Adverse Effect and (d) is in compliance with all Requirements of Law
except to the extent that the failure to comply therewith could not, in the
aggregate, reasonably be expected to have a Material Adverse Effect.

            7.4 Corporate Power; Authorization; Enforceable Obligations. (a)
HCNA has the corporate power and authority, and the legal right, to make,
deliver and perform the Loan Documents to which it is a party and has taken all
necessary corporate action to authorize the execution, delivery and performance
of the Loan Documents to which it is a party. Each Borrower has the corporate
power and authority, and the legal right, to make, deliver and perform the Loan
Documents to which it is a party and to borrow hereunder and has taken all
necessary corporate action to authorize the borrowings on the terms and
conditions of this Agreement and the Notes and to authorize the execution,
delivery and performance of the Loan Documents to which it is a party.

            (b) No consent or authorization of, filing with, notice to or other
act by or in respect of, any Governmental Authority or any other Person is
required to be obtained, made or accomplished by HCNA or any Borrower in
connection with the borrowings hereunder or with the execution, delivery or
performance of the Loan Documents to which HCNA or such Borrower is a party,
other than (i) such consents, authorizations, filings and notices which have
been obtained or made and remain in full force and effect and (ii) at all times
after the Closing Date, such consents, authorizations, filings or notices the
failure of


                                      -61-

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which to be made could not reasonably be expected to have a Material Adverse
Effect.

            (c) This Agreement has been, and each other Loan Document to which
it is a party has been or will be, duly executed and delivered on behalf of HCNA
and each Borrower.

            (d) This Agreement constitutes, and each other Loan Document to
which it is a party constitutes or when executed and delivered will constitute,
a legal, valid and binding obligation of HCNA and each Borrower enforceable
against HCNA or such Borrower, as the case may be, in accordance with its terms,
except as may be limited by applicable bankruptcy, insolvency, reorganization,
moratorium or similar laws affecting creditors' rights generally and by general
equitable principles (whether by proceedings in equity or at law).

            7.5 No Legal Bar. The execution, delivery and performance of the
Loan Documents to which it is a party, the borrowings hereunder and the use of
the proceeds thereof will not violate any Requirement of Law applicable to, or
Contractual Obligation of, HCNA or of any of its Subsidiaries and will not
result in, or require, the creation or imposition of any Lien on any of its or
their respective properties or revenues pursuant to any such Requirement of Law
or Contractual Obligation or otherwise, other than any such Liens which are
permitted pursuant to subsection 10.3 of this Agreement or subsection 10.3 of
the Canadian Credit Agreement.

            7.6 No Material Litigation. No litigation, investigation or
proceeding of or before any arbitrator or Governmental Authority is pending or,
to the knowledge of HCNA or any Borrower, threatened by or against HCNA or any
of its Subsidiaries or against any of its or their respective properties or
revenues (a) with respect to any of the Loan Documents or any of the
transactions contemplated hereby or thereby, or (b) which could reasonably be
expected to have a Material Adverse Effect.

            7.7 No Default. Neither HCNA nor any of its Subsidiaries is in
default under or with respect to any of its Contractual Obligations in any
respect which could reasonably be expected to have a Material Adverse Effect. No
Default or Event of Default has occurred and is continuing.

            7.8 Ownership of Property; Liens. Each of HCNA and its Subsidiaries
has good record and marketable title in fee simple to, or a valid leasehold
interest in, all its real property, and good title to, or a valid leasehold
interest in, all its other property, except to the extent that the failure to
have such title or leasehold interest could not (in the aggregate with all other
such failures) reasonably be expected to have a Material Adverse Effect. None of
such property is subject to any Lien except as permitted by subsection 10.3 of
this Agreement and subsection 10.3 of the Canadian Credit Agreement.


                                      -62-

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            7.9 Intellectual Property. HCNA and its Subsidiaries own, or are
licensed to use, all trademarks, tradenames, copyrights, technology, know-how
and processes necessary for the conduct of their businesses as currently
conducted except for those the failure to own or license which could not
reasonably be expected to have a Material Adverse Effect (the "Intellectual
Property"). No claim has been asserted and is pending by any Person challenging
or questioning the use of any such Intellectual Property or the validity or
effectiveness of any such Intellectual Property, nor does HCNA or any of its
Subsidiaries know of any valid basis for any such claim, except such claims
that, in the aggregate, could not reasonably be expected to have a Material
Adverse Effect. The use of such Intellectual Property by HCNA and its
Subsidiaries does not infringe on the rights of any Person, except for such
claims and infringements that, in the aggregate, could not reasonably be
expected to have a Material Adverse Effect.

            7.10 No Burdensome Restrictions. So far as HCNA and its Subsidiaries
can reasonably foresee, no Requirement of Law or Contractual Obligation of HCNA
or any of its Subsidiaries could reasonably be expected to have a Material
Adverse Effect.

            7.11 Taxes. Each of HCNA and its Subsidiaries has filed or caused to
be filed all material tax returns which, to the knowledge of HCNA, are required
to be filed and has paid all taxes shown to be due and payable on said returns
or on any assessments made against it or any of its property and all other
material taxes, fees or other charges imposed on it or any of its property by
any Governmental Authority (other than any such taxes, fees and other charges
the amount or validity of which are currently being contested in good faith by
appropriate proceedings and with respect to which reserves in conformity with
GAAP have been provided on the books of HCNA or its Subsidiaries, as the case
may be); no tax Lien (other than any such Lien permitted by subsection 10.3 of
this Agreement or subsection 10.3 of the Canadian Credit Agreement) has been
filed, and, to the knowledge of HCNA and its Subsidiaries, no material claim is
being asserted, with respect to any such tax, fee or other charge.

            7.12 Federal Regulations. No part of the proceeds of any Loans will
be used for "purchasing" or "carrying" any "margin stock" within the respective
meanings of each of the quoted terms under Regulation U of the Board of
Governors of the Federal Reserve System as now and from time to time hereafter
in effect or for any purpose which violates the provisions of the Regulations of
such Board of Governors. If requested by any Lender or the Administrative Agent,
the Borrowers will furnish to the Administrative Agent and each Lender a
statement to the foregoing effect in conformity with the requirements of FR Form
U-1 referred to in said Regulation U.


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            7.13 ERISA. Neither a Reportable Event nor an "accumulated funding
deficiency" (within the meaning of Section 412 of the Code or Section 302 of
ERISA) has occurred during the five-year period prior to the date on which this
representation is made or deemed made with respect to any Plan, and each Plan
has complied in all material respects with the applicable provisions of ERISA
and the Code. No termination of a Single Employer Plan has occurred, and no Lien
in favor of the PBGC or a Plan has arisen, during such five-year period. The
present value of all accrued benefits under each Single Employer Plan (based on
those assumptions used to fund such Plans) did not, as of the last annual
valuation date prior to the date on which this representation is made or deemed
made, exceed the value of the assets of such Plan allocable to such accrued
benefits. Neither any Borrower nor any Commonly Controlled Entity has had a
complete or partial withdrawal from any Multiemployer Plan, and neither any
Borrower nor any Commonly Controlled Entity would become subject to any
liability under ERISA if any Borrower or any such Commonly Controlled Entity
were to withdraw completely from all Multiemployer Plans as of the valuation
date most closely preceding the date on which this representation is made or
deemed made. No such Multiemployer Plan is in Reorganization or Insolvent. The
present value (determined using actuarial and other assumptions which are
reasonable in respect of the benefits provided and the employees participating)
of the liability of any Borrower and each Commonly Controlled Entity for post
retirement benefits to be provided to their current and former employees under
Plans which are welfare benefit plans (as defined in Section 3(1) of ERISA) does
not, in the aggregate, exceed the assets under all such Plans allocable to such
benefits. Notwithstanding the foregoing, the representations and warranties
contained in this subsection 7.13 shall be deemed to be true and correct in all
material respects when made or deemed made except to the extent that any one or
more failures of such representations and warranties to be true and correct when
made or deemed made could, in the aggregate, reasonably be expected to have a
material adverse effect on the business, operations, property or financial or
other condition of any Borrower and its Subsidiaries taken as a whole.

            7.14 Investment Company Act; Other Regulations. No Borrower is an
"investment company", or a company "controlled" by an "investment company",
within the meaning of the Investment Company Act of 1940, as amended. No
Borrower is subject to regulation under any Federal or State statute or
regulation which limits its ability to incur Indebtedness.

            7.15 Subsidiaries; Guarantors. Schedule III sets forth all of the
Subsidiaries of HCNA and each Borrower as of the Closing Date. HCNA and each
Person designated as a Guarantor on Schedule III constitute all of the
Guarantors as of the Closing Date.


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            7.16 Environmental Matters. Except to the extent that all such
matters, circumstances, facts and events could not, in the aggregate, subject
HCNA and its Subsidiaries to liabilities in respect of remedial costs,
compliance costs, compensatory damages, punitive damages, fines, penalties or
any combination thereof which could reasonably be expected to result in the
payment by HCNA and its Subsidiaries (after giving effect to the proceeds of any
applicable insurance owing by a carrier who has acknowledged in writing its
liability under the relevant policy and to any applicable indemnities owing to
HCNA and its Subsidiaries from a Person (other than HCNA or any of its
Subsidiaries) which is reasonably likely to honor its indemnity) of an amount in
excess of $12,500,000 in the aggregate for any fiscal year of HCNA:

            (i) The facilities and properties owned, leased or operated by HCNA
      or any of its Subsidiaries (the "Properties") do not contain, and have not
      previously contained, any Materials of Environmental Concern in amounts or
      concentrations which (A) constitute or constituted a violation of, or (B)
      could reasonably be expected to give rise to liability under, any
      Environmental Law.

            (ii) The Properties and all operations at the Properties are in
      compliance, and have during the term of ownership or lease thereof by HCNA
      and its Subsidiaries been in compliance with all applicable Environmental
      Laws and there is no contamination at, under or about the Properties or
      violation of any Environmental Law with respect to the Properties or the
      business operated by HCNA or any of its Subsidiaries (the "Business").

            (iii) Neither HCNA nor any of its Subsidiaries has received any
      notice of violation, alleged violation, non-compliance, liability or
      potential liability regarding environmental matters or compliance with
      Environmental Laws with regard to any of the Properties or the Business,
      nor does HCNA or any Borrower have knowledge or reason to believe that any
      such notice will be received or is being threatened.

            (iv) Materials of Environmental Concern have not been transported or
      disposed of from the Properties in violation of, or in a manner or to a
      location which could reasonably be expected to give rise to liability
      under, any Environmental Law, nor have any Materials of Environmental
      Concern been generated, treated, stored or disposed of at, on or under any
      of the Properties in violation of, or in a manner that could reasonably be
      expected to give rise to liability under, any applicable Environmental
      Law.

            (v) No judicial proceeding or governmental or administrative action
      is pending or, to the knowledge of HCNA or any Borrower, threatened, under
      any Environmental


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      Law to which HCNA or any of its Subsidiaries is or will be named as a
      party with respect to the Properties or the Business, nor are there any
      consent decrees or other decrees, consent orders, administrative orders or
      other orders, or other administrative or judicial requirements outstanding
      under any Environmental Law with respect to the Properties or the
      Business.

            (vi) There has been no release or threat of release of Materials of
      Environmental Concern at or from the Properties, or arising from or
      related to the operations of HCNA or any of its Subsidiaries in connection
      with the Properties or otherwise in connection with the Business, in
      violation of or in amounts or in a manner that could reasonably be
      expected to give rise to liability under Environmental Laws.

            7.17 Solvency. On the Closing Date (after giving effect to the
extensions of credit to be made or maintained hereunder on such date and the use
of proceeds of each thereof, and the payment of all legal and accounting and
other fees and expenses relating hereto and thereto), each of HCNA, each
Borrower and each other Loan Party will be Solvent.

            7.18 Searles Valley Manufacturing Process. NACC has completed Steps
I and II of Phase I of the plan to significantly alter the manufacturing process
at Searles Valley, California in order to reduce the cost of soda ash, improve
the mining of borax and raw carbonate materials and eliminate marginally
profitable potash and sodium borate production operations of the Trona Plant.

            7.19 No Other Restriction. The payment of dividends and loans
between and among HCNA, the Borrowers, the Affiliate Guarantors and/or Sifto
will not violate any Requirement of Law (other than any state or provincial
corporate law limiting the ability of any corporation incorporated in such
jurisdiction to pay dividends or any bankruptcy, insolvency, reorganization or
similar law) applicable to, or Contractual Obligation (other than those
contained in this Agreement and the other Loan Documents, the Canadian Credit
Agreement and the other Loan Documents (as defined therein) and the
documentation under which the Public Debt is outstanding) of HCNA, the Borrower,
any of the Affiliate Guarantors and/or Sifto.

      SECTION 8. CONDITIONS PRECEDENT

            8.1 Conditions to Effectiveness. The effectiveness of this Agreement
is subject to the satisfaction on or prior to February 28, 1997 of the following
conditions precedent:

            (a) Loan Documents, etc. The Administrative Agent and the Collateral
      Agent shall have received:


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                  (i) this Agreement, executed and delivered by a duly
            authorized officer of each Borrower and HCNA and by the Lenders;

                  (ii) the Canadian Credit Agreement, executed and delivered by
            a duly authorized officer of Sifto and by the Lenders (as defined
            therein);

                  (iii) an assignment agreement, in form and substance
            satisfactory to the Administrative Agent, pursuant to which the
            lenders ("Existing Lenders") under the Existing Credit Agreement
            shall assign their commitments thereunder to the Lenders, and the
            Lenders shall purchase the outstanding loans under the Existing
            Credit Agreement from the Existing Lenders;

                  (iv) for each Lender, a Note executed and delivered by each
            Borrower;

                  (v) amendments to the Security Agreements and replacement Lock
            Box Agreements, in each case having terms satisfactory to the
            Administrative Agent and the Lenders (and each Lender by executing
            and delivering this Agreement shall be deemed to have consented to
            such amendments and replacement Lock Box Agreements in the form
            distributed to such Lender prior to the Closing Date); and

                  (vi) each other document or instrument as may be reasonably
            requested by the Administrative Agent or the Collateral Agent,
            including, without limitation, (x) a copy of any debt instrument,
            security agreement or other material contract to which HCNA or any
            of its Subsidiaries may be a party, (y) reaffirmations of the
            Guarantees and (z) any instruments or other documents reasonably
            deemed necessary by the Collateral Agent to maintain the security
            interests created by the Security Documents.

            (b) Corporate Proceedings of the Borrowers. The Administrative Agent
      shall have received a copy of the resolutions, in form and substance
      reasonably satisfactory to the Administrative Agent, of the Board of
      Directors of each Borrower authorizing (i) the execution, delivery and
      performance of this Agreement, the Notes and the other Loan Documents to
      which it is a party, (ii) the borrowings contemplated hereunder and (iii)
      the granting by it of the Liens created pursuant to the Security
      Agreements, certified by the Secretary or an Assistant Secretary of such
      Borrower as of the Closing Date, which certificate shall be in form and
      substance reasonably satisfactory to the Administrative Agent and shall
      state that the resolutions thereby certified have not been amended,
      modified, revoked or rescinded.


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            (c) Borrower Incumbency Certificates. The Administrative Agent shall
      have received, with a copy for each Lender, a certificate of each
      Borrower, dated the Closing Date, as to the incumbency and signatures of
      the officers of such Borrower executing any Loan Document reasonably
      satisfactory in form and substance to the Administrative Agent, executed
      by the President or any Vice President and the Secretary or any Assistant
      Secretary of such Borrower.

            (d) Corporate Proceedings of HCNA. The Administrative Agent shall
      have received a copy of the resolutions, in form and substance reasonably
      satisfactory to the Administrative Agent, of the Board of Directors of
      HCNA authorizing the execution, delivery and performance of this
      Agreement, certified by the Secretary or an Assistant Secretary of HCNA as
      of the Closing Date, which certificate shall be in form and substance
      reasonably satisfactory to the Administrative Agent and shall state that
      the resolutions thereby certified have not been amended, modified, revoked
      or rescinded.

            (e) HCNA Incumbency Certificate. The Administrative Agent shall have
      received, with a copy for each Lender, a certificate of HCNA, dated the
      Closing Date, as to the incumbency and signatures of the officers of HCNA
      executing any Loan Document reasonably satisfactory in form and substance
      to the Administrative Agent, executed by the President or any Vice
      President and the Secretary or any Assistant Secretary of HCNA.

            (f) Corporate Proceedings of Subsidiaries. The Administrative Agent
      shall have received a copy of the resolutions, in form and substance
      reasonably satisfactory to the Administrative Agent, of the Board of
      Directors of each Subsidiary of HCNA (other than the Borrowers) which is a
      Loan Party authorizing the execution, delivery and performance of the Loan
      Documents to which it is a party, certified by the Secretary or an
      Assistant Secretary of each such Subsidiary as of the Closing Date, which
      certificate shall be in form and substance reasonably satisfactory to the
      Administrative Agent and shall state that the resolutions thereby
      certified have not been amended, modified, revoked or rescinded.

            (g) Subsidiary Incumbency Certificates. The Administrative Agent
      shall have received, with a copy for each Lender, a certificate of each
      Subsidiary of HCNA (other than the Borrowers) which is a Loan Party, dated
      the Closing Date, as to the incumbency and signatures of the officers of
      such Subsidiaries executing any Loan Document, reasonably satisfactory in
      form and substance to the Administrative Agent, executed by the President
      or any Vice President and the Secretary or any Assistant Secretary of each
      such Subsidiary.


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            (h) Corporate Documents. The Administrative Agent shall have
      received from each Loan Party the certificate of incorporation and by-laws
      of such Loan Party certified by the Secretary or an Assistant Secretary of
      such Loan Party.

            (i) Consents, Licenses and Approvals. The Administrative Agent shall
      have received a certificate of a Responsible Officer of each Borrower (i)
      attaching copies of all consents, authorizations and filings referred to
      in subsection 7.4 (other than those delivered in connection with the
      Original Closing Date), and (ii) stating that all consents, licenses and
      filings referred to in subsection 7.4 are in full force and effect, and
      each such consent, authorization and filing (other than those delivered in
      connection with the Original Closing Date) shall be in form and substance
      reasonably satisfactory to the Administrative Agent. The Administrative
      Agent shall have received a consent to this Agreement, in form and
      substance satisfactory to the Administrative Agent, from each of the
      parties to the Affiliate Guarantee (other than HCNA and the Borrowers).

            (j) Fees. The Administrative Agent shall have received all fees to
      be received by it on the Closing Date for its own account and for the
      accounts of the Lenders. The Collateral Agent shall have received all fees
      to be received by it on the Closing Date for its own account.

            (k) Legal Opinions. The Administrative Agent shall have received,
      with a counterpart for the Collateral Agent and each Lender, the executed
      legal opinion of Winthrop, Stimson, Putnam & Roberts, counsel to the
      Borrowers and the other Loan Parties, in form and substance reasonably
      satisfactory to the Collateral Agent and the Administrative Agent.

            (l) Notice. The Administrative Agent shall have received evidence
      satisfactory to it that the written notice referred to in subsection 14.9
      shall have been duly delivered.

            (m) Borrowing Base Certificates. The Administrative Agent, the
      Collateral Agent and the Lenders shall have received a Borrowing Base
      Certificate based, for the purposes of this paragraph only, on the
      Collateral described in the most recent Borrowing Base Certificate
      delivered pursuant to the terms of the Existing Credit Agreement prior to
      the Closing Date but updated to include information as to the amounts
      outstanding hereunder on the Closing Date after giving effect to the
      transactions contemplated hereby and dated as of the Closing Date and
      confirming that, as of the Closing Date, the conditions set forth in
      subsection 8.2(e) shall be satisfied.


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Each of the documents listed in clauses (b) through (m) above shall be
reasonably satisfactory in form and substance to the Administrative Agent and
the Collateral Agent. Promptly following the Closing Date, the Administrative
Agent shall deliver to each Lender a copy of each of the documents, instruments
and agreements described in this subsection 8.1.

            8.2 Conditions to Each Extension of Credit. Except to the extent
expressly set forth in this Agreement, the agreement of each Lender to make any
extension of credit requested to be made by it to a Borrower on any date
(including, without limitation, its initial extension of credit) is subject to
the satisfaction of the following conditions precedent:

            (a) Representations and Warranties. Each of the representations and
      warranties made by the Loan Parties in or pursuant to the Loan Documents
      shall be true and correct in all material respects on and as of such date
      as if made on and as of such date, provided that the representations and
      warranties contained in the second sentence of subsection 7.7 for the
      purposes of this paragraph shall be deemed modified by paragraphs (b), (c)
      and (d) below.

            (b) No Undisclosed Default or Event of Default. No Default (other
      than Defaults that have been disclosed in writing to the Lenders) or Event
      of Default shall have occurred and be continuing on such date or after
      giving effect to the extension of credit requested to be made on such
      date.

            (c) No Undisclosed Default or Event of Default under Canadian Credit
      Agreement. No Default under (and as defined in) the Canadian Credit
      Agreement (other than any such Defaults that have been disclosed in
      writing to the Lenders) and no Event of Default under (and as defined in)
      the Canadian Credit Agreement shall have occurred and be continuing on
      such date.

            (d) No Default. No Default hereunder or under (and as defined in)
      the Canadian Credit Agreement shall have occurred and be continuing on
      such date, in each case as to which the Aggregate Required Lenders have
      delivered to the Administrative Agent a written notice specifying that no
      extensions of credit hereunder may be made as a result thereof.

            (e) Borrowing Base. After giving effect to the extension of credit
      requested to be made on such date, the Aggregate Outstanding Extensions of
      Credit owing by such Borrower to all Lenders will not exceed the Borrowing
      Base then applicable to such Borrower.

            (f) Additional Matters. All corporate and other proceedings, and all
      documents, instruments and other legal


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      matters in connection with the transactions contemplated by this Agreement
      and the other Loan Documents shall be reasonably satisfactory in form and
      substance to the Administrative Agent and (to the extent that such
      proceedings, documents, instruments and other matters relate to the
      Collateral or the Collateral Agent) the Collateral Agent, and each of the
      Administrative Agent and (with respect to matters relating to the
      Collateral or the Collateral Agent) the Collateral Agent shall have
      received such other documents and legal opinions in respect of any aspect
      or consequence of the transactions contemplated hereby or thereby as it
      shall reasonably request.

Each borrowing by, and Letter of Credit issued, extended or renewed on behalf
of, a Borrower hereunder shall constitute a representation and warranty by the
Borrowers as of the date of such extension of credit that the conditions
contained in subsections 8.2(a), 8.2(b), 8.2(c), 8.2(d) and 8.2(e) have been
satisfied.

      SECTION 9. AFFIRMATIVE COVENANTS

            HCNA hereby agrees that, so long as the Commitments remain in
effect, any Note or any Letter of Credit remains outstanding and unpaid or any
other amount is owing to any Lender, the Collateral Agent or the Administrative
Agent hereunder, HCNA shall and shall cause each of its Subsidiaries to (except
in the case of delivery of financial information, reports and notices, in which
case HCNA and each Borrower shall):

            9.1 Financial Statements. Furnish to each Lender:

            (a) as soon as available, but in any event within 90 days after the
      end of each fiscal year of HCNA, a copy of the audited consolidated and
      consolidating balance sheets of HCNA and its consolidated Subsidiaries as
      at the end of such year and the related audited consolidated and
      consolidating statements of income and retained earnings and of cash flows
      for such year, setting forth in comparative form the figures for the
      previous year, reported on without a "going concern" explanatory paragraph
      or like qualification or exception, or qualification arising out of the
      scope of the audit, by Coopers & Lybrand or other independent certified
      public accountants of nationally recognized standing;

            (b) as soon as available, but in any event not later than 45 days
      after the end of each of the first three quarterly periods of each fiscal
      year of HCNA, the unaudited consolidated and consolidating balance sheets
      of HCNA and its consolidated Subsidiaries as at the end of such quarter
      and the related unaudited consolidated and consolidating statements of
      income and retained earnings and of cash flows of HCNA and its
      consolidated Subsidiaries for such quarter


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      and the portion of the fiscal year through the end of such quarter,
      setting forth in comparative form the budget for such period and the
      figures for the same period of the previous year, certified by a
      Responsible Officer of HCNA as being fairly stated in all material
      respects (subject to normal year-end audit adjustments);

            (c) as soon as available, but in any event within 30 days after the
      end of each Interim Accounting Period in a fiscal year of HCNA (other than
      any such Interim Accounting Period which ends on the last day of a fiscal
      quarter of HCNA), the unaudited consolidated and consolidating balance
      sheet, income statement and cash flow statement of HCNA and its
      consolidated Subsidiaries, in each case for such Interim Accounting
      Period, setting forth in comparative form the budget for such period and
      the figures for the same period of the previous year, certified by a
      Responsible Officer of HCNA (subject to normal year-end audit
      adjustments);

all such financial statements shall be complete and correct in all material
respects and shall be prepared in reasonable detail and in accordance with GAAP
applied consistently throughout the periods reflected therein and with prior
periods (except as approved by such accountants or officer, as the case may be,
and disclosed therein).

            9.2 Certificates; Other Information. Furnish to each Lender, the
Collateral Agent and the Administrative Agent:

            (a) concurrently with the delivery of the financial statements
      referred to in subsection 9.1(a), a letter from the independent certified
      public accountants reporting on such financial statements stating that in
      making the examination necessary therefor no knowledge was obtained of any
      Default or Event of Default, except as specified in such letter;

            (b) concurrently with the delivery of the financial statements
      referred to in subsection 9.1, a certificate of a Responsible Officer of
      HCNA (i) stating that, to the best of such Responsible Officer's
      knowledge, HCNA or the relevant Borrower, as the case may be, during such
      period has observed or performed all of its covenants and other
      agreements, and satisfied every condition, contained in this Agreement and
      in the Notes and the other Loan Documents to which it is a party to be
      observed, performed or satisfied by it, and that such Officer has obtained
      no knowledge of any Default or Event of Default except as specified in
      such certificate, (ii) showing in detail the calculations supporting such
      statement in respect of subsection 10.1 and (iii) in the case of financial
      statements referred to in subsection 9.1(a) or (b), describing in
      reasonable detail the status of each project referred to in the definition
      of "Major Project Capital Expenditures", including the


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      aggregate amount expended in connection therewith, together with the
      amount remaining to be expended, through the date of such financial
      statements;

            (c) not later than 45 days following the last day of each fiscal
      year of each Borrower, a copy of the annual business plan of such Borrower
      (prepared on a month-by-month basis) for the next succeeding fiscal year
      (incorporating an operating budget and projections of cash flow of its
      Subsidiaries), accompanied by an outline of the assumptions upon which
      such business plan was based and a certificate of a Responsible Officer of
      such Borrower to the effect that such Responsible Officer (i) believes
      that such business plan is based upon reasonable assumptions and (ii) has
      no reason to believe that such business plan is incorrect or misleading in
      any material respect (it being recognized by the Lenders that such
      projections as to future events are not to be viewed as facts and that
      actual results during the period covered may differ from the projected
      results);

            (d) within five days after the same are sent, copies of all
      financial statements and reports relating to HCNA and its Subsidiaries
      which HCG sends to its stockholders, and within five days after the same
      are filed, copies of all financial statements and reports which HCNA or
      any of its Subsidiaries may make to, or file with, the Securities and
      Exchange Commission or any successor or analogous Governmental Authority;

            (e) within five Business Days after each of (i) the end of the first
      two weeks of each Interim Accounting Period and (ii) the last day of each
      Interim Accounting Period, each of (x) a Borrowing Base Certificate for
      each Borrower, each certified by a Responsible Officer of such Borrower as
      being true and accurate in all material respects as of such end of the
      first two weeks or last day of each Interim Accounting Period, as the case
      may be, and (y) a certificate of a Responsible Officer of such Borrower
      stating that such Borrower was in compliance with the Borrowing Base
      applicable to it during the period subsequent to the most recent
      certification;

            (f) as soon as available, but in any event prior to May 31 of each
      year, a report prepared by the environmental compliance officer of the
      Borrowers, (i) reviewing all material developments relating to compliance
      by each Borrower and Subsidiary thereof and their respective tenants with
      all Environmental Laws applicable to such Borrower and its Subsidiaries
      and their respective tenants, including without limitation a schedule
      setting forth any discharges, emissions, or other activities of such
      Borrower and its Subsidiaries and their respective tenants, reported or
      required to be reported to any government agency, that are in excess of
      any standard in any permits issued pursuant to


                                      -73-

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      any Environmental Laws, setting forth the amount by which the permit was
      exceeded, and setting forth the number of days the discharges, emissions,
      or other activities occurred in excess of the applicable standard; (ii)
      attaching all material reports from environmental consultants working for
      or hired by such Borrower or any of its Subsidiaries, including without
      limitation, any annual report of an independent environmental consultant
      to the Borrowers (which consultant shall be reasonably acceptable to the
      Administrative Agent) concerning any property or facility owned, operated
      or leased by, or a source of potential liability to, such Borrower or any
      of its Subsidiaries; (iii) discussing the progress in the implementation
      of the environmental compliance program of such Borrower and its
      Subsidiaries (the "Environmental Compliance Program") including, but not
      limited to, a facility-by-facility review of, where applicable,
      groundwater remediation, installation of equipment to control air
      emissions or water discharges, disposal of equipment containing
      polychlorinated biphenyls, removal of asbestos-containing materials,
      investigation or removal of any equipment in connection with environmental
      concerns, storage containers or other property, remediation of landfills
      or other contaminated land, changes in procedures in the handling or
      disposal of any hazardous materials, and any other significant matters
      addressed in the Environmental Compliance Program; (iv) reporting on the
      extent to which ongoing maintenance and oversight procedures implemented
      under the Environmental Compliance Program were followed by such Borrower
      and its Subsidiaries during the preceding fiscal year; (v) setting forth
      any changes to the Environmental Compliance Program implemented during the
      preceding fiscal year; (vi) listing all material correspondence with, and
      all notices of any kind received from, any Governmental Authority having
      jurisdiction over any Environmental Laws and attaching copies thereof;
      (vii) reporting on the status of any pending or threatened litigation
      against such Borrower or any of its Subsidiaries pertaining to any
      Environmental Laws; and (viii) certified as true and correct by such
      environmental compliance officer; and

            (g) promptly, such additional financial and other information as any
      Lender may from time to time reasonably request.

            9.3 Payment of Obligations. Pay, discharge or otherwise satisfy at
or before maturity or before they become delinquent, as the case may be, all its
material obligations of whatever nature, except where the amount or validity
thereof is currently being contested in good faith by appropriate proceedings
and reserves in conformity with GAAP with respect thereto have been provided on
the books of HCNA or its Subsidiaries, as the case may be.


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            9.4 Conduct of Business and Maintenance of Existence. Continue to
engage in business of the same general type as now conducted by it and preserve,
renew and keep in full force and effect its corporate existence and take all
reasonable action to maintain all material rights, privileges and franchises
necessary or desirable in the normal conduct of its business except as otherwise
permitted pursuant to subsection 10.7; comply with all Contractual Obligations
and Requirements of Law except to the extent that failure to comply therewith
could not, in the aggregate, be reasonably expected to have a Material Adverse
Effect.

            9.5 Maintenance of Property; Insurance. (a) Keep all property useful
and necessary in its business in good working order and condition, except to the
extent that all failures to do so could not, in the aggregate, reasonably be
expected to have a Material Adverse Effect.

            (b) Except to the extent that such insurance is not available upon
commercially reasonable terms and HCNA and its Subsidiaries have agreed with the
Administrative Agent and the Collateral Agent upon commercially reasonably
alternatives thereto, maintain with financially sound and reputable insurance
companies insurance on all its property in at least such amounts and against at
least such risks (but including in any event public liability, product liability
and business interruption) as were in effect at the time of the insurance review
delivered pursuant to the closing of the Existing Credit Agreement, with the
Collateral Agent named as additional loss payee with respect to proceeds under
any such policies derived from Collateral.

            (c) Furnish to each Lender, no later than fifteen days following
each renewal date with respect thereto and at such other times as the
Administrative Agent or the Collateral Agent reasonably may request, full
information as to the insurance carried (including, without limitation, evidence
reasonably acceptable to the Collateral Agent demonstrating that it has been
named as additional loss payee thereunder with respect to insurance proceeds
derived from Collateral). All such loss payee endorsements shall comply with the
terms and provisions of the Security Agreements and shall, in any event, provide
that no such policy shall be cancelled, materially reduced in amount or
materially changed in coverage until at least 30 days after receipt by the
Collateral Agent of written notice of such cancellation, reduction or change.

            9.6 Inspection of Property; Books and Records; Discussions. Keep
proper books of record and accounts containing entries with respect to all
dealings and transactions in relation to its business and activities which are
full, true and correct in all material respects in accordance with GAAP and all
Requirements of Law; and permit representatives of any Lender to visit and
inspect any of its properties and examine and make abstracts from any of its
books and records at any reasonable


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time upon reasonable advance notice and as often as may reasonably be desired
and to discuss the business, operations, properties and financial and other
condition of the Borrowers and their Subsidiaries with officers of the Borrowers
and their Subsidiaries; and, upon reasonable notice to such Borrower, to permit
representatives of the Administrative Agent and the Collateral Agent to discuss
the business, operations, properties and financial and other condition of the
Borrower and its Subsidiaries with officers and employees of the Borrowers and
their Subsidiaries and with their respective independent certified public
accountants.

            9.7 Notices. To the extent that a Responsible Officer of HCNA, any
Borrower, Sifto, the Subsequent Borrower or any Guarantor knows or should
reasonably be expected to know thereof, promptly give notice to the
Administrative Agent and each Lender of:

            (a) the occurrence of any Default or Event of Default;

            (b) any (i) default or event of default under any Contractual
      Obligation of HCNA or any of its Subsidiaries or (ii) litigation,
      investigation or proceeding which may exist at any time between HCNA or
      any of its Subsidiaries and any Governmental Authority, which in either
      case, if not cured or if adversely determined, as the case may be, could
      (in the responsible judgment of such Responsible Officer) reasonably be
      expected to have a Material Adverse Effect;

            (c) any litigation or proceeding affecting HCNA or any of its
      Subsidiaries (including, without limitation, with respect to compliance
      with Environmental Laws) in which the amount involved is $500,000 or more
      and not covered by insurance issued by an insurer who has acknowledged in
      writing its liability under the relevant policy or in which injunctive or
      similar relief is sought;

            (d) the following events, as soon as possible and in any event
      within 30 days after a Responsible Officer of HCNA knows or should
      reasonably be expected to know thereof: (i) the occurrence or expected
      occurrence of any Reportable Event with respect to any Plan, a failure to
      make any required contribution to a Plan, the creation of any Lien in
      favor of the PBGC or a Plan or any withdrawal from, or the termination,
      Reorganization or Insolvency of, any Multiemployer Plan or (ii) the
      institution of proceedings or the taking of any other action by the PBGC
      or any Borrower or any Commonly Controlled Entity or any Multiemployer
      Plan with respect to the withdrawal from, or the termination,
      Reorganization or Insolvency of, any Plan; and

            (e) any development or event which could (in the reasonable judgment
      of such Responsible Officer) reasonably be expected to have a Material
      Adverse Effect.


                                      -76-

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Each notice pursuant to this subsection 9.7 shall be accompanied by a statement
of a Responsible Officer of HCNA setting forth details of the occurrence
referred to therein and stating what action HCNA or the relevant Subsidiary
proposes to take with respect thereto.

            9.8 Environmental Laws. (a) Give, and use its diligent efforts to
cause its tenants and its Subsidiaries' respective tenants to give, timely and
proper notice, and undertake any other measures necessary to ensure that it
obtains any indemnification, defense, contribution or reimbursement that may be
available for, any material liability or alleged material liability arising
under any Environmental Law.

            (b) Diligently plan for and implement all measures reasonably
necessary and appropriate to eliminate any act, operation, omission or condition
that may be out of compliance with, in violation of, or otherwise giving rise to
material liability or potential material liability under, any Environmental Law.

            9.9 Canadian Currency Risk. Maintain prudent business practices in
respect of currency risk with respect to the Canadian operations of the Sifto
Group.

            9.10 Inventory. Use diligent efforts to cause each Public Warehouse
and landlord for any facility in which Inventory of any Borrower is located to
deliver to the Collateral Agent an acknowledgement copy of a Landlord's Waiver
(which may incorporate changes in form and substance reasonably satisfactory to
the Collateral Agent).

            9.11 Field Analyses. Permit the Collateral Agent, at any reasonable
time upon reasonable advance notice and as often as may reasonably be required
to conduct a field analysis and examination of the Collateral, provided that
each Lender shall have the right to accompany the Collateral Agent on any such
field analysis and examination at such Lender's sole expense. The Collateral
Agent hereby agrees to provide promptly to each Lender and each Borrower a copy
(or summary thereof) of any field analysis and examination of the Collateral
conducted by it.

      SECTION 10. NEGATIVE COVENANTS

            HCNA hereby agrees that, so long as the Commitments remain in
effect, any Note or any Letter of Credit remains outstanding and unpaid or any
other amount is owing to any Lender, the Collateral Agent or the Administrative
Agent hereunder, HCNA shall not, and (except with respect to subsection 10.1)
shall not permit any of its Subsidiaries to, directly or indirectly:


                                      -77-

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            10.1 Financial Condition Covenants.

            (a) Interest Coverage. Permit the Interest Coverage Ratio of HCNA
      and its Subsidiaries for any period of four consecutive fiscal quarters
      ending during any "Test Period" set forth below to be less than the ratio
      set forth opposite such period below:

                                                     Interest
                  Test Period                    Coverage Ratio
                  -----------                    --------------
          Closing Date  -   12/31/97               1.20 to 1.0
              01/01/98  -   12/31/98               1.40 to 1.0
              01/01/99  -   12/31/99               1.50 to 1.0
              01/01/00  -   thereafter             1.75 to 1.0

            (b) Fixed Charge Coverage. Permit for any period of four consecutive
      fiscal quarters ending during any "Test Period" set forth below the Fixed
      Charge Coverage Ratio of HCNA and its Subsidiaries to be less than the
      ratio set forth opposite such period below:

                                                   Fixed Charge
                  Test Period                    Coverage Ratio
                  -----------                    --------------
          Closing Date  -   12/31/98               1.00 to 1.0
              01/01/99  -   thereafter             1.10 to 1.0

            (c) Net Funded Debt Coverage. Permit on the last day of any fiscal
      year set forth below the ratio of (i) the amount equal to Consolidated
      Funded Debt of HCNA and its Subsidiaries on such date minus cash and Cash
      Equivalents owned by HCNA and its Subsidiaries on such date to (ii)
      Consolidated EBITDA of HCNA and its Subsidiaries for the fiscal year then
      ended to be greater than the ratio set forth opposite such fiscal year
      below:

                   Fiscal Year                           Ratio
                   -----------                           -----
                      1997                            6.25 to 1.0
                      1998                            6.00 to 1.0
                      1999                            4.85 to 1.0
                      2000                            4.25 to 1.0
                      2001 and each fiscal year thereafter 3.60 to 1.0

            10.2 Limitation on Indebtedness. Create, incur, assume or suffer to
exist any Indebtedness, except:

            (a) Indebtedness of HCNA and its Subsidiaries under the Loan
      Documents;

            (b) Indebtedness of HCNA and its Subsidiaries under the Public Debt;


                                      -78-

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            (c) Indebtedness of HCNA and its Subsidiaries under the Canadian
      Credit Agreement;

            (d) unsecured Indebtedness of a corporation which becomes a
      Subsidiary of HCNA after the Closing Date, provided that (i) such
      Indebtedness existed at the time such corporation became a Subsidiary and
      was not created in anticipation thereof and (ii) immediately after giving
      effect to the acquisition of such corporation by HCNA and its
      Subsidiaries, no Default or Event of Default shall have occurred and be
      continuing;

            (e) Indebtedness of HCNA to any of its Subsidiaries and of any
      Subsidiary of HCNA to HCNA or any other Subsidiary; provided that the
      aggregate amount of such Indebtedness owed pursuant to this subsection
      10.2(e) to any Guarantor by Subsidiaries of HCNA which are not then
      Guarantors (other than members of the Sifto Group, as to which this
      proviso shall not apply), in the aggregate with (i) all Investments made
      by Guarantors in Subsidiaries which are not Guarantors (other than the
      Sifto Group) pursuant to subsection 10.10(e) and (ii) all Guarantee
      Obligations then outstanding pursuant to subsection 10.4(h), shall not
      exceed the amount equal to the Permitted Investment Amount immediately
      after giving effect to the incurrence of such Indebtedness;

            (f) Indebtedness of HCNA and its Subsidiaries in respect of
      Financing Leases (in addition to those permitted pursuant to subsection
      10.2(g)) and in respect of all or a part of the purchase price of
      property, plant and equipment in the ordinary course of business having
      aggregate imputed principal amounts and aggregate principal amounts not to
      exceed as to HCNA and its Subsidiaries $28,500,000 in the aggregate at any
      time outstanding (of which not more than $5,000,000 shall be on account of
      the Sifto Group);

            (g) Indebtedness (including, without limitation, in respect of
      Financing Leases) in existence on the Closing Date and listed on Schedule
      V and any refinancings, refundings, renewals or extensions thereof,
      provided that the terms applicable to such refinanced, renewed or extended
      Indebtedness, as the case may be, are no more burdensome to the applicable
      borrower thereof than the terms applicable to the original Indebtedness;

            (h) Indebtedness of the Sifto Group which is permitted under the
      Canadian Credit Agreement; and

            (i) additional Indebtedness of HCNA and its Subsidiaries not
      exceeding $2,000,000 in aggregate principal amount at any one time
      outstanding.


                                      -79-

<pg$pcn>
            10.3 Limitation on Liens. Create, incur, assume or suffer to exist
any Lien upon any of its or any of its Subsidiaries' property, assets or
revenues, whether now owned or hereafter acquired, except for:

            (a) Liens for taxes not yet due and payable or which are being
      contested in good faith by appropriate proceedings, provided that adequate
      reserves with respect thereto are maintained on the books of HCNA or its
      Subsidiaries, as the case may be, in conformity with GAAP (or, in the case
      of Subsidiaries incorporated under the laws of a jurisdiction outside of
      the United States, generally accepted accounting principles in effect from
      time to time in their respective jurisdictions of incorporation);

            (b) carriers', warehousemen's, mechanics', materialmen's,
      repairmen's or other like Liens arising in the ordinary course of business
      in respect of amounts which are not overdue for a period of more than 60
      days or which are being contested in good faith by appropriate
      proceedings;

            (c) pledges or deposits in connection with workers' compensation,
      unemployment insurance and other social security legislation and deposits
      securing liability to insurance carriers under insurance arrangements;

            (d) deposits to secure the performance of bids, trade contracts
      (other than for borrowed money), leases, statutory obligations, surety and
      appeal bonds, performance bonds and other obligations of a like nature
      incurred in the ordinary course of business;

            (e) easements, rights-of-way, restrictions and other similar
      encumbrances with respect to real property incurred in the ordinary course
      of business which, in the aggregate, are not substantial in amount and
      which do not in any case materially detract from the value of the property
      subject thereto or materially interfere with the ordinary conduct of the
      business of HCNA or such Subsidiary;

            (f) Liens in existence on the Closing Date and listed on Schedule
      VI, securing Indebtedness permitted by subsection 10.2(g), provided that
      no such Lien is spread to cover any additional property after the Closing
      Date and that the amount of Indebtedness secured thereby is not increased;

            (g) Liens securing Indebtedness permitted by subsection 10.2(f);
      provided that (i) such Liens shall be created substantially simultaneously
      with the incurrence of such Indebtedness, (ii) such Liens do not at any
      time encumber any property other than the property (and, in the case of
      real property, the improvements thereon) financed by


                                      -80-

<pg$pcn>
      such Indebtedness, (iii) the amount of Indebtedness secured thereby is not
      increased and (iv) the principal amount of Indebtedness secured by any
      such Lien shall at no time exceed 100% of the original purchase price of,
      and the cost of construction of or improvement to, such property at the
      time it was acquired, constructed or improved;

            (h) Liens on Capital Stock of Subsidiaries of HCNA securing the
      obligations of HCNA in respect of the Senior Secured Notes and securing
      Guarantee Obligations permitted pursuant to subsection 10.4(c);

            (i) Liens on assets of Sifto and its Subsidiaries securing the
      obligations of Sifto in respect of the Sifto Notes;

            (j) Liens (not otherwise permitted hereunder) which secure
      obligations not exceeding (as to HCNA and its Subsidiaries in the
      aggregate) $2,000,000 in aggregate amount at any time outstanding;

            (k) Liens permitted under the Canadian Credit Agreement;

            (l) Liens for unpaid royalties not then due and payable pursuant to
      mineral leases running in favor of Governmental Authorities which Liens,
      in the aggregate, are not substantial in amount and do not, in any case,
      materially detract from the value of the property subject thereto or
      materially interfere with the ordinary conduct of the business of HCNA and
      its Subsidiaries; provided that such Liens do not encumber any Collateral;

            (m) Liens in respect of judgments and decrees not constituting an
      Event of Default under Section 12(i);

            (n) with respect to real property located in Canada, reservations or
      exceptions contained in the original grants from the Crown and minor
      discrepancies in the legal description of any real property which would be
      disclosed in an up-to-date survey;

            (o) with respect to real property located in Canada, zoning by-laws,
      ordinances or other restrictions as to the use of real property, and
      agreements with other persons registered against title to any real
      property, which do not in the aggregate materially detract from the value
      of the property subject thereto or materially interfere with the ordinary
      conduct of the business of HCNA or any of its Subsidiaries; and

            (p) Liens created pursuant to the Security Documents.


                                      -81-

<pg$pcn>
            10.4 Limitation on Guarantee Obligations. Create, incur, assume or
suffer to exist any Guarantee Obligation except:

            (a) Guarantee Obligations outstanding on the Closing Date and listed
      on Schedule VII;

            (b) Guarantee Obligations incurred by HCNA and its Subsidiaries in
      respect of unsecured interest rate and currency hedges on market terms;
      provided that the aggregate notional amount of such Guarantee Obligations
      pursuant to this subsection 10.4(b) does not exceed (i) in the case of
      interest rate hedges, the amount of principal due from HCNA and its
      Subsidiaries with respect to Indebtedness permitted pursuant to subsection
      10.2 which is reasonably subject to interest rate fluctuations and (ii) in
      the case of currency hedges, the amount of the relevant currency
      reasonably subject to exchange rate fluctuations which is owing to, or
      held by, HCNA and its Subsidiaries in the ordinary course of business;

            (c) Guarantee Obligations in respect of the Public Debt;

            (d) Guarantee Obligations permitted pursuant to the Canadian Credit
      Agreement;

            (e) the Guarantees;

            (f) Guarantee Obligations incurred by HCNA and its Subsidiaries in
      respect of obligations of any Guarantor which are otherwise permitted
      hereunder;

            (g) Guarantee Obligations incurred by any Guarantor in respect of
      obligations of the Sifto Group under Financing Leases and operating leases
      (with the amount of such Guarantee Obligations under operating leases
      being deemed to be the present value of the annual lease payments during
      the life of such lease) in an aggregate amount not to exceed $5,000,000 at
      any one time outstanding;

            (h) Guarantee Obligations incurred by HCNA and its Subsidiaries in
      respect of obligations under operating leases which are not otherwise
      permitted pursuant to this subsection 10.4; provided that the aggregate
      amount of Guarantee Obligations permitted pursuant to this subsection
      10.4(h) shall not exceed, in the aggregate with (i) all Indebtedness owing
      to Guarantors pursuant to subsection 10.2(e) by Subsidiaries which are not
      then Guarantors (other than the Sifto Group) and (ii) all Investments made
      by Guarantors in Subsidiaries which are not Guarantors (other than the
      Sifto Group) pursuant to subsection 10.10(e), the amount equal to the
      Permitted Investment Amount immediately after giving effect to the making
      of such Guarantee Obligations; and


                                      -82-

<pg$pcn>
            (i) Guarantee Obligations incurred by HCNA and its Subsidiaries in
      respect of the obligation of Searles Domestic Water Company to provide
      water to the residents of Searles Valley, California; provided that any
      payments on account of such Guarantee Obligations shall be deemed to be
      Investments in a Subsidiary of HCNA which is not a Guarantor or a member
      of the Sifto Group for purposes of subsection 10.10(e).

            10.5 Limitation on Capital Expenditures. Make or commit to make (by
way of the acquisition of securities of a Person or otherwise) any Capital
Expenditures, other than Capital Expenditures in the ordinary course of business
not exceeding (excluding any capitalized interest which otherwise would be
included therein), (a) in the aggregate for HCNA and its Subsidiaries (excluding
Major Project Capital Expenditures and including Capital Expenditures made by
the Subsidiaries described in clause (b) below) during any of the fiscal years
of HCNA set forth below, the "HCNA Amount" set forth opposite such fiscal year
below, (b) in the aggregate for the Sifto Group (excluding Major Project Capital
Expenditures) during any of the fiscal years of HCNA set forth below, the "Sifto
Amount" set forth opposite such fiscal year below or (c) in the aggregate with
respect to Major Project Capital Expenditures during any of the fiscal years of
HCNA set forth below, the "Major Project Amount" set forth opposite such fiscal
year below (collectively, the "Permitted Capital Expenditures"):

                                                   HCNA               Sifto
                                                         Major Project
 Fiscal Year                 Amount               Amount              Amount
 -----------                 ------               ------              ------
     1997                 $27,400,000          $ 8,000,000        $ 8,200,000
     1998                  27,000,000            8,000,000         13,000,000
     1999                  37,900,000            8,000,000            800,000
     2000                  29,900,000            8,000,000            300,000
     2001                  30,300,000            8,000,000            300,000
     2002                  30,300,000            8,000,000            300,000

provided, that (a) any portion of any such HCNA Amount for any fiscal year may
instead be added ("Transferred HCNA Amounts") to the Major Project Amount
available for Major Project Capital Expenditures in such fiscal year (which
Transferred HCNA Amounts shall also be deemed usage of any such HCNA Amount for
the purposes of this subsection), (b) any portion of any such HCNA Amount (not
to exceed 50% of the HCNA Amount set forth above for that fiscal year) which is
not expended in the fiscal year for which it is permitted above may be carried
over and added to the HCNA Amount which is to be available for expenditure by
HCNA and its Subsidiaries in the next following fiscal year and shall be deemed
to be the first such HCNA Amount so expended in such next following fiscal year
(provided, however, that the HCNA Amount so available in such next following
year (as adjusted by the amounts


                                      -83-

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so carried over) shall not be increased by the portion of the Sifto Amount
carried over pursuant to clause (c) below), (c) any portion of any such Sifto
Amount (not to exceed 50% of the Sifto Amount set forth above for that fiscal
year) which is not expended in the fiscal year for which it is permitted above
may be carried over and added to the Sifto Amount which is to be available for
expenditure by the Sifto Group in the next following fiscal year and shall be
deemed to be the first such Sifto Amount so expended in such next following
fiscal year and (d) any portion of any such Major Project Amount which is not
expended in the fiscal year for which it is permitted above may be carried over
and added to the Major Project Amount which is to be available for expenditure
by HCNA and its Subsidiaries in the next following fiscal year and shall be
deemed to be the first such Major Project Amount so expended in such next
following fiscal year.

            10.6 Limitation on Leases. Permit Consolidated Lease Expense for any
fiscal year of HCNA and its Subsidiaries to exceed $22,000,000 in the aggregate.

            10.7 Limitation on Fundamental Changes. Enter into any merger,
consolidation or amalgamation, or liquidate, wind up or dissolve itself (or
suffer any liquidation or dissolution), or convey, sell, lease, assign, transfer
or otherwise dispose of, all or substantially all of its property, business or
assets, or make any material change in its present method of conducting
business, except:

            (a) any Borrower may be merged or consolidated with or into another
      Borrower (provided that (i) the relevant Administrative Agent and
      Collateral Agent have received 30 days' prior written notice of such
      merger or consolidation and (ii) after giving effect to such merger or
      consolidation, the relevant Collateral Agent shall have a first priority,
      perfected security interest in all Collateral in which it possessed a
      perfected security interest immediately prior to giving effect to such
      merger or consolidation);

            (b) any wholly owned Subsidiary of a Borrower may be amalgamated,
      merged or consolidated with or into such Borrower or any other Borrower
      (provided that, in the case of a merger or consolidation, a Borrower shall
      be the continuing or surviving corporation) or with or into any one or
      more other Guarantors (provided that, in the case of a merger or
      consolidation, such Guarantor shall be the continuing or surviving
      corporation) or with or into any member of the Sifto Group (provided that,
      in the case of a merger or consolidation, such member of the Sifto Group
      shall be the continuing or surviving corporation); provided, further, that
      the aggregate book value of all assets which are to become held by a
      member of the Sifto Group in any fiscal year of HCNA pursuant to
      subsections 10.7(c), 10.8(l)


                                      -84-

<pg$pcn>
      and this subsection 10.7(b) shall not exceed $3,000,000 and in the case of
      any such disposition under this subsection 10.7(b) to any member of the
      Sifto Group by any Person who is not a member of the Sifto Group, such
      disposition shall be made for fair value and shall be made in accordance
      with past business practice;

            (c) any wholly owned Subsidiary of HCNA may convey, sell, lease,
      assign, transfer or otherwise dispose of any or all of its business,
      property or assets (upon voluntary liquidation or otherwise) to a
      Borrower, any other Guarantor or any member of the Sifto Group and in the
      case of any such disposition under this subsection 10.7(c) to any member
      of the Sifto Group by any Person who is not a member of the Sifto Group,
      such disposition shall be made for fair value and shall be made in
      accordance with past business practice; provided that the aggregate book
      value of all assets so conveyed, sold, leased, assigned, transferred or
      otherwise disposed of pursuant to subsections 10.7(b), 10.8(l) and this
      subsection 10.7(c) to members of the Sifto Group in any fiscal year of
      HCNA shall not exceed $3,000,000;

            (d) subject to any applicable restrictions contained in the Security
      Documents, any Borrower or any Subsidiary of a Borrower may sell or
      otherwise dispose of all or substantially all of its assets pursuant to a
      transaction permitted by subsection 10.8(b); and

            (e) HCNA and its Subsidiaries may enter into transactions which are
      otherwise prohibited by this subsection 10.7 to the extent that such
      transactions are permitted pursuant to subsection 10.7 of the Canadian
      Credit Agreement;

provided, however, that in the case of any transaction permitted by subsection
10.7(a), 10.7(b) or 10.7(c), the Borrower, Guarantor or member of the Sifto
Group, as the case may be, which is the continuing or surviving corporation of
such merger, consolidation or amalgamation shall provide to the relevant
Collateral Agent and Administrative Agent such other documents, instruments,
agreements, legal opinions and certificates as may reasonably be deemed
necessary or appropriate by such Collateral Agent and Administrative Agent to
perfect the security interest of such Collateral Agent in the Collateral (as
defined in the relevant Security Agreements).

            10.8 Limitation on Sale of Assets. Convey, sell, lease, assign,
transfer or otherwise dispose of any of its property, business or assets
(including, without limitation, receivables, leasehold interests, Capital Stock
and all Collateral), whether now owned or hereafter acquired, except:


                                      -85-

<pg$pcn>
                  (a) the sale or other disposition of obsolete or worn out
         equipment, fixtures or real property in the ordinary course of
         business;

                  (b) the sale or other disposition of all or any portion of the
         Capital Stock of a Subsidiary of HCNA which was not a Subsidiary of
         HCNA on December 28, 1996 or of any equipment, fixtures or real
         property of HCNA or any of its Subsidiaries for fair market value;
         provided that (i) after giving effect to such sale or other
         disposition, the aggregate book value of all assets so sold or disposed
         of subsequent to December 28, 1996 (other than inventory sold in the
         ordinary course of business) does not exceed $30,000,000 and not more
         than $10,000,000 in the aggregate of such $30,000,000 shall be in
         respect of the sale or other disposition of any property of members of
         the Sifto Group and (ii) such sale or other disposition could not
         reasonably be expected to have a Material Adverse Effect;

                  (c) the sale of inventory in the ordinary course of business;

                  (d) in the case of any Subsidiary of HCNA, the issuance or
         sale of shares of such Subsidiary's Capital Stock to any Borrower or
         any wholly owned Subsidiary of HCNA;

                  (e) the transfer or relinquishment of mineral lease acreage to
         the extent required to stay within maximum allowable acreage or in
         exchange for Public Land Act leases; provided that such transfer or
         relinquishment could not reasonably be expected to have a Material
         Adverse Effect;

                  (f) the extension or renewal of existing leases or new leases
         covering nonindustrial commercial or residential property owned by HCNA
         or its Subsidiaries; provided that any such new leases shall be on
         commercially reasonable terms and could not reasonably be expected to
         have a Material Adverse Effect;

                  (g) relinquishment for no consideration of federal rights of
         way or portions thereof not needed for the operation of the business of
         HCNA or any of its Subsidiaries;

                  (h) extension or renewal of existing leases or new leases with
         public utilities serving HCNA or its Subsidiaries; provided that the
         terms of such leases could not reasonably be expected to have a
         Material Adverse Effect;

                  (i) the issuance or sale for cash of not more than $25,000,000
         in the aggregate of preferred Capital Stock of HCNA, the rights,
         designations and preferences for which are

                                      -86-

<pg$pcn>
         in form and substance reasonably satisfactory to the Majority Lenders;

                  (j) the sale, transfer or other disposition by Sifto of all or
         any part of its assets to the Subsequent Borrower;

                  (k) the making of any Restricted Payment permitted under
         subsection 10.9 or Investment permitted under subsection 10.10;

                  (l) the conveyance, sale, lease, assignment, transfer or other
         disposition of any or all of its business, property or assets (upon
         voluntary liquidation or otherwise) by any wholly owned Subsidiary of
         HCNA to any Borrower, Guarantor or member of the Sifto Group; provided
         that the aggregate book value of all assets so disposed of pursuant to
         subsections 10.7(b), 10.7(c) and this subsection 10.8(l) to members of
         the Sifto Group by any Person who is not a member of the Sifto Group in
         any fiscal year of HCNA shall not exceed $3,000,000 and in the case of
         any such disposition under this subsection 10.9(b) to any member of the
         Sifto Group by any Person who is not a member of the Sifto Group, such
         disposition shall be made for fair value and shall be made in
         accordance with past business practice; and

                  (m) in the case of any Soda Ash Subsidiary, the issuance or
         sale of up to 49% of the Capital Stock of such Soda Ash Subsidiary to
         one or more Persons that are not Affiliates of HCNA in connection with
         a joint venture arrangement with such Persons.

                  10.9 Limitation on Restricted Payments. Declare or pay any
dividend (other than dividends payable solely in common stock of a Borrower) on,
or make any payment on account of, or set apart assets for a sinking or other
analogous fund for, the purchase, redemption, defeasance, retirement or other
acquisition of, any shares of any class of Capital Stock of HCNA or any warrants
or options to purchase any such Stock, whether now or hereafter outstanding, or
make any other distribution in respect thereof, either directly or indirectly,
whether in cash or property or in obligations of HCNA or any of its Subsidiaries
(such declarations, payments, setting apart, purchases, redemptions,
defeasances, retirements, acquisitions and distributions being herein called
"Restricted Payments"), except:

                  (a) Restricted Payments made by Subsidiaries of HCNA to HCNA
         or any Guarantor and Restricted Payments made by any member of the
         Sifto Group to another member of the Sifto Group;

                  (b) during such time as no Default or Event of Default has
         occurred and is continuing or would result therefrom, Restricted
         Payments made by HCNA to HCG for the purpose of enabling HCG to pay its
         actual operating expenses in the

                                      -87-

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         ordinary course of business in an aggregate amount not to exceed, in
         any fiscal year of HCNA set forth below, the amount set forth opposite
         such fiscal year:

<TABLE>
<CAPTION>
                  Fiscal Year                 Amount
                  -----------                 ------
<S>                   <C>                  <C>       
                      1997                 $  850,000
                      1998                    892,500
                      1999                    937,125
                      2000                    984,000
                      2001                  1,033,200
                      2002                  1,084,900
</TABLE>

         provided that, in the event that any amounts otherwise available to be
         paid to HCG pursuant to this subsection 10.9(b) may not be so paid
         because of the occurrence and continuance of a Default or an Event of
         Default, such amounts shall accrue (with such accrued amounts being
         subordinated in right of payment to amounts owing hereunder and under
         the Guarantees) and may be paid on a cumulative basis (without interest
         thereon) at such later date when no Default or Event of Default has
         occurred and is continuing or would result therefrom;

                  (c) Restricted Payments to HCG (in addition to those permitted
         pursuant to subsection 10.9(b)) in an aggregate amount not to exceed at
         any time the amount equal to (i) 25% of the cumulative Consolidated
         Free Cash Flow of HCNA from December 28, 1996 through the date of the
         then most recent financial statements of HCNA provided to the
         Administrative Agent pursuant to subsection 9.1(a) or 9.1(b), as the
         case may be, minus (ii) the amount of investments made during such
         period pursuant to subsection 10.10(c); provided that the Restricted
         Payment Allowance Condition shall be satisfied before and after giving
         effect to the making of such Restricted Payment;

                  (d) during such time as no Default or Event of Default has
         occurred and is continuing, Restricted Payments by HCNA in an aggregate
         amount not to exceed $2,000,000 subsequent to December 28, 1996 in
         respect of the purchase by HCNA of Capital Stock of HCG from management
         of HCNA and its Subsidiaries to the extent that such repurchases are
         required pursuant to an employee stock plan of HCNA, which plan shall
         be in form and substance reasonably satisfactory to the Collateral
         Agent and Administrative Agent;

                  (e) Restricted Payments pursuant to the Tax Sharing Agreement,
         which Restricted Payments (i) shall be made not earlier than three
         Business Days prior to the date upon which HCG's related liability to
         the relevant Governmental Authority for tax (including, without
         limitation, estimated taxes) is paid (or, if no such taxes are payable,
         ordinarily would have been due) and (ii) shall not exceed the amount of

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         income taxes which is to be paid by HCNA to HCG pursuant to such Tax
         Sharing Agreement; and

                  (f) Restricted Payments in respect of the purchase by HCNA of
         common stock of HCNA, which Restricted Payments may be made in any
         combination of (i) cash constituting the proceeds of the sale (after
         the Closing Date) of common stock of HCNA or (ii) common stock of HCNA.

                  10.10 Limitation on Investments, Loans and Advances. Make any
advance, loan, extension of credit or capital contribution to, or purchase any
stock, bonds, notes, debentures or other securities of or any assets
constituting all or substantially all of the assets of a business unit of, or
make any other investment in, any Person (such advances, loans, extensions of
credit, capital contributions, purchases and other investments being herein
called "Investments"), except:

                  (a) Investments in the form of extensions of trade credit in
         the ordinary course of business;

                  (b) Investments in Cash Equivalents;

                  (c) Investments by HCNA and its Subsidiaries not otherwise
         permitted hereunder in Capital Stock and assets of Persons other than
         Guarantors in an amount not to exceed at any time, in the aggregate
         with all other Investments made by HCNA and its Subsidiaries permitted
         by this subsection 10.10(c), the amount equal to (i) 25% of the
         cumulative Consolidated Free Cash Flow of HCNA from December 28, 1996
         through the date of the then most recent financial statements of HCNA
         provided to the Administrative Agent pursuant to subsection 9.1(a) or
         9.1(b), as the case may be, minus (ii) the amount of Restricted
         Payments made during such period pursuant to subsection 10.9(c);
         provided that (w) the business being acquired is substantially the same
         as, or directly related to, that in which HCNA or any of its
         Subsidiaries presently is engaged, (x) for purposes of this subsection
         10.10(c), the aggregate amount of any such Investment (i) shall
         include, without limitation, the amount of Indebtedness (including,
         without limitation, Guarantee Obligations) and other liabilities
         assumed or forgiven (and, in the case of any acquisition of more than
         50% of the issued and outstanding Capital Stock of a Person (including,
         without limitation, acquisitions by merger), with any Indebtedness and
         other liabilities which remain on the consolidated balance sheet of
         such acquired Person and its consolidated Subsidiaries after giving
         effect to such acquisition being deemed to be assumed) and the fair
         market value of any non-cash consideration and (ii) shall not exceed
         10% of the book value of the assets of HCNA and its Subsidiaries on a
         consolidated basis (as reflected on the most recent consolidated
         balance sheet of HCNA and its Subsidiaries delivered pursuant to
         subsection 9.1(a) or 

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         9.1(b), as the case may be, prior to the date upon which such
         acquisition was consummated), (y) the Restricted Payment Allowance
         Condition shall be satisfied before and after giving effect to the
         making of such Investment and (z) HCNA and its Subsidiaries shall have
         made available to the Administrative Agent and the Lenders at least 30
         days prior to the consummation of such Investment all material due
         diligence information provided to or prepared by HCNA and its
         Subsidiaries in connection therewith;

                  (d) Investments in joint ventures in which HCNA or any of its
         Subsidiaries holds (after giving effect to such Investment) Capital
         Stock, which investments shall not, in the aggregate, exceed the amount
         equal to (i) the Permitted Investment Amount immediately prior to the
         making of such Investment plus (ii) the aggregate amount of any
         additional Investments in such joint ventures which is treated as a
         Capital Expenditure for purposes of this Agreement (and is made in
         compliance with the provisions of subsection 10.5);

                  (e) Investments by HCNA or any of its Subsidiaries in HCNA or
         any of its Subsidiaries (including, without limitation, the Borrowers);
         provided that the aggregate amount of Investments made by Guarantors
         pursuant to this subsection 10.10(e) in Subsidiaries of HCNA which are
         not Guarantors (other than the Sifto Group, as to which this proviso
         shall not apply) in the aggregate with all Indebtedness owing to
         Guarantors pursuant to subsection 10.2(e) by Subsidiaries which are not
         then Guarantors (other than members of the Sifto Group) and the
         aggregate amount of all Guarantee Obligations then outstanding pursuant
         to subsection 10.4(h), shall not exceed the amount equal to the
         Permitted Investment Amount immediately after giving effect to the
         making of such Investment;

                  (f) Investments in the form of loans and advances to employees
         of HCNA and its Subsidiaries for travel, entertainment and relocation
         expenses in the ordinary course of business in an aggregate amount for
         HCNA and its Subsidiaries not to exceed $1,000,000 at any one time
         outstanding;

                  (g) Investments permitted pursuant to subsection 10.11(c);

                  (h) Investments by members of the Sifto Group which are not
         otherwise permitted hereunder and are permitted pursuant to the
         Canadian Credit Agreement; and

                  (i) Investments by NACC of all or part of its soda ash
         business in a Soda Ash Subsidiary.

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                  10.11 Limitation on Modifications of Debt Instruments and
Other Agreements; Optional Payments of Debt Instruments. (a) Amend, modify,
restate, supplement or change any of the terms of the Public Debt or of the
indentures governing the Public Debt, other than any such amendment,
modification or change which, (i) pursuant to clause (4), (5) or (6) of Section
901 of any indenture governing the Public Debt (or any comparable clauses of any
indenture governing Permitted Refinancing Indebtedness in respect of the Public
Debt) could be effected by the Trustee thereunder (and as defined therein)
without a vote of the holders of such Public Debt and (ii) could not reasonably
be expected to materially adversely affect the Administrative Agent, the
Collateral Agent or the Lenders.

                  (b) Amend, modify, restate, supplement or change (i) any of
the terms of the Tax Sharing Agreement or Services Agreement or (ii) any of the
terms of the Stockholders' Agreement in any respect which (in the case of this
clause (ii) only) could be adverse to the interests of the Administrative Agent,
the Collateral Agent or the Lenders or which (in the case of clause (i) or (ii))
could reasonably be expected to increase the obligations of HCNA or any of its
Subsidiaries thereunder.

                  (c) Make any optional payment or prepayment on, or redemption
or repurchase of, the Public Debt (including, without limitation, by way of an
"Offer to Purchase" pursuant to, and as defined in, the indentures governing the
Public Debt), in each case other than pursuant to the incurrence of Permitted
Refinancing Indebtedness; provided that, so long as no Default or Event of
Default has occurred and is continuing or would result therefrom, HCNA and Sifto
may collectively repurchase (other than with the proceeds of Loans hereunder):

                  (i) not more than $30,000,000 in aggregate principal amount of
         the Senior Secured Notes and the Sifto Notes;

                  (ii) an additional amount of Senior Secured Notes and Sifto
         Notes, provided that (A) the Debt Purchase Conditions are then
         satisfied and (B) the aggregate consideration paid by HCNA and its
         Subsidiaries for such Senior Secured Notes and Sifto Notes does not
         exceed $25,000,000; and

                  (iii) an additional amount of Public Debt (including, without
         limitation, Senior Subordinated Notes) not to exceed the amount of net
         cash proceeds received subsequent to the Closing Date by HCNA (by way
         of capital contribution in the event of a public offering of the
         Capital Stock of HCG) from public offerings of the Capital Stock of HCG
         or HCNA.

                  (d) Amend, modify, restate, supplement or change any material
terms of the Sale/Leaseback Documents.

                  10.12 Limitation on Transactions with Affiliates. Enter into
any transaction (other than the transactions

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contemplated by the Tax Sharing Agreement, the Services Agreement and the
Stockholders' Agreement, including, without limitation, any purchase, sale,
lease or exchange of property or the rendering of any service, with any
Affiliate unless such transaction (a) is otherwise permitted under this
Agreement, (b) is in the ordinary course of HCNA's or such Subsidiary's
business, (c) is upon terms no less favorable to HCNA or such Subsidiary, as the
case may be, than it would obtain in a comparable arm's length transaction with
a Person which is not an Affiliate (it being understood that the approval by the
independent directors of HCNA of a transaction shall be presumptive evidence
that such transaction is no less favorable than such an arm's length
transaction) and (d) could not reasonably be expected to have a detrimental
effect upon HCNA or any of its Subsidiaries. Notwithstanding the foregoing, any
Affiliate of HCNA who is an individual may serve as a director, officer,
employee or consultant of HCNA or any of its Subsidiaries and receive reasonable
compensation or indemnification in connection with his or her services in such
capacity, plus reimbursement of reasonable expenses, including travel and
entertainment expenses, directly relating to the business of HCNA or any of its
Subsidiaries, provided, that compensation per annum and indemnification to any
such individual in excess of $250,000 (i) shall be approved by the compensation
committee of the Board of Directors of HCNA or a majority of the directors of
the Board of Directors of HCNA and (ii) may only be paid to individuals holding
the title of Chairman or Vice Chairman.

                  10.13 Limitation on Changes in Fiscal Year. Permit the fiscal
year of HCNA or of any Borrower (as defined herein and in the Canadian Credit
Agreement) to end on a day other than the last Saturday in March.

                  10.14 Limitation on Negative Pledge Clauses. Enter into with
any Person any agreement which prohibits or limits the ability of any Borrower
or any of its Subsidiaries to create, incur, assume or suffer to exist any Lien
upon any of its property, assets or revenues, whether now owned or hereafter
acquired; provided that nothing contained in this subsection 10.14 shall
prohibit HCNA or any of its Subsidiaries from entering into this Agreement, any
other Loan Document, the Canadian Credit Agreement, any other Loan Document (as
defined therein) or any industrial revenue bonds, purchase money mortgages or
Financing Leases permitted by this Agreement (in which cases, any prohibition or
limitation on Liens contained therein shall only be effective against the assets
financed thereby) or the Public Debt or the Sale/Leaseback Documents.

                  10.15 Limitation on Lines of Business. Enter into any
business, either directly or through any Subsidiary, except for those businesses
in which the Borrowers and their Subsidiaries are engaged on the date of this
Agreement or which are directly related thereto.

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                  10.16 Payments in Respect of Accounts. (a) Instruct or
otherwise permit any Person obligated under any of the Accounts (as defined in
the Security Agreements) to remit any payment whether by check, wire transfer or
otherwise, to any account or address other than a lock box, concentration or
similar account established by the Collateral Agent pursuant to a Lock Box
Agreement.

                  (b) Request any withdrawals from any concentration account in
an amount which is in excess of the amount reasonably estimated by the relevant
Borrower as being necessary to finance its immediate cash requirements in the
ordinary course of business, with each request for a withdrawal from any such
concentration account by any Borrower being deemed to be a representation and
warranty by such Borrower that such request complies with the provisions of this
subsection 10.16(b).

                  10.17 Maintenance of Bank Accounts. (a) Maintain any material
bank accounts (other than the Master Concentration Account created pursuant to
(and as defined in) the Security Agreements) in the United States (including,
without limitation, any such accounts which could reasonably be deemed to be
"principal operating accounts") with a Person other than The Chase Manhattan
Bank or a Lender (or affiliate thereof).

                  (b) Maintain any material bank accounts (other than the Lock
Box Accounts created pursuant to (and as defined in) the Lock Box Agreements
provided pursuant to (and as defined in) the Canadian Credit Agreement) in
Canada (including, without limitation, any such accounts which could reasonably
be deemed to be "principal operating accounts") with a Person other than a
Canadian "Schedule I" bank or a Lender (or affiliate thereof).

                  (c) Maintain any material bank accounts outside of the United
States and Canada (including, without limitation, any such accounts which could
reasonably be deemed to be "principal operating accounts") with a Person other
than a Lender.

                  (d) During such time as any Loans or L/C Obligations which are
not cash collateralized are owing hereunder, maintain any material balances in
any deposit account with a bank or other financial institution in excess of the
amounts required to finance immediate cash requirements in the ordinary course
of business, except to the extent that such balances are directly attributable
to any conveyance, sale, lease, assignment, transfer or other disposal of any of
the property, business or assets (other than property, business or assets
constituting Collateral) of HCNA or any of its Subsidiaries permitted pursuant
to subsection 10.8.

                  10.18 Restriction on Cash Balances. Except to the extent that
(a) the indentures governing the Public Debt specifically otherwise require or
(b) no Loans or Acceptances are then outstanding (and, in the case of
Acceptances, not cash 

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collateralized) under (and as defined in) the Canadian Credit Agreement, permit
any member of the Sifto Group to hold any cash or Cash Equivalents in excess of
the amounts required to finance immediate cash requirements in the ordinary
course of business.

                  10.19 Subsidiaries. Create, acquire or otherwise suffer to
exist any Subsidiary of HCNA (other than Subsidiaries of HCNA existing on the
date hereof, Searles Domestic Water Company, the Sifto Group, any Soda Ash
Subsidiary and any Insignificant Subsidiary), unless either (a) such Subsidiary
has executed and delivered to the Collateral Agent a guarantee, substantially in
the form of Exhibit C, together with such certificates, approvals, legal
opinions and other documents as the Administrative Agent or the Collateral Agent
reasonably may request or (b) the Borrower which is to be the corporate parent
of such Subsidiary presents evidence to the Lenders that the making of such
guarantee by such Subsidiary could reasonably be expected to have a Material
Adverse Effect, and the holders of at least 75% of the Commitments (in their
sole discretion) agree in writing that such guarantee shall not be required.

                  10.20 Amendments to Charter and By-Laws. Amend, supplement or
otherwise modify its Certificate of Incorporation or by-laws.

                  10.21 Limitation on Dividend Restrictions. Enter into with any
Person any agreement which prohibits or limits the ability of any member of the
Sifto Group to make Restricted Payments in respect of its Capital Stock.


         SECTION 11. GUARANTEES

                  11.1 Guarantees. To induce the Administrative Agent, the
Collateral Agent and the Lenders to execute and deliver this Agreement and to
make the extensions of credit hereunder, and in consideration thereof, HCNA and
each Borrower hereby, jointly and severally and unconditionally and irrevocably,
guarantee to the Administrative Agent, the Collateral Agent and each Lender (and
their respective successors and assigns) the prompt and complete payment when
due (whether at the stated maturity, by acceleration or otherwise, but subject
to applicable grace periods contained herein) of the Obligations. Anything
herein or in any other Loan Document to the contrary notwithstanding, the
maximum liability of any Borrower under this Section 11 shall in no event exceed
the amount which can be guaranteed by such Borrower under applicable federal and
state laws relating to the insolvency of debtors.

                  11.2 No Subrogation, Contribution, Reimbursement or Indemnity.
(a) Notwithstanding anything to the contrary contained in this Agreement,
neither HCNA nor any Borrower shall be entitled to be subrogated to any of the
rights of the Administrative Agent, the Collateral Agent or any Lender against

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any other Borrower or any other Guarantor or any collateral security or
guarantee or right of offset held by the Administrative Agent, the Collateral
Agent or any Lender for the payment of the Obligations, nor shall HCNA or any
Borrower seek or be entitled to seek any contribution or reimbursement from any
other Borrower or any other guarantor (including, without limitation, HCNA) in
respect of payments made by HCNA or such Borrower hereunder, until all amounts
owing to the Administrative Agent, the Collateral Agent and the Lenders by each
Borrower on account of the Obligations are paid in full and the Commitments are
terminated.

                  (b) So long as the Obligations remain outstanding, if any
amount shall be paid by or on behalf of any Borrower to any other Borrower or
HCNA on account of any of the rights waived in subsection 11.2, such amount
shall be held by such Borrower or HCNA (as the case may be) in trust, segregated
from other funds of such Borrower or HCNA, and shall, forthwith upon receipt by
such Borrower or HCNA (as the case may be), be turned over to the Collateral
Agent in the exact form received by such Borrower or HCNA (duly indorsed by such
Borrower or HCNA to the Collateral Agent, if required), to be applied against
the Obligations, whether matured or unmatured, as provided in subsection 6.11.

                  (c) The provisions of this subsection 11.2 shall survive the
termination of the guarantees contained in this Section 11, the payment in full
of the Obligations and the termination of the Commitments.

                  11.3 Modification of Obligations. HCNA and each Borrower
hereby consents that, without the necessity of any reservation of rights against
it and without notice to or further assent by it, any demand for payment of any
of the Obligations made by the Administrative Agent, the Collateral Agent or any
Lender may be rescinded by the Administrative Agent, the Collateral Agent or
such Lender, respectively, and any of the Obligations continued, and the
Obligations, or the liability of any other party upon or for any part thereof,
or any collateral security or guarantee therefor or right of offset with respect
thereto, may, from time to time, in whole or in part, be renewed, extended,
amended, modified, accelerated, compromised, waived, surrendered or released by
the Administrative Agent, the Collateral Agent or such Lender and this Agreement
(other than the obligations specifically incurred by HCNA and the Borrowers
under this Section 11), any Note, any Application, any Letter of Credit, any
collateral security document or other guarantee or document in connection
therewith may (in accordance with the provisions of this Agreement, including,
without limitation, subsection 14.1) be amended, modified, supplemented or
terminated, in whole or in part, as any such Administrative Agent, the
Collateral Agent or such Lender may deem advisable from time to time, and any
collateral security or guarantee or right of offset at any time held by the
Administrative Agent, the Collateral Agent or any Lender for the payment of the
Obligations 

                                      -95-

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may be sold, exchanged, waived, surrendered or released, all without the
necessity of any reservations of rights against HCNA or any Borrower and without
notice to or further assent by HCNA or any Borrower (in respect of its guarantee
hereunder) each of which will remain bound hereunder notwithstanding any such
renewal, extension, supplement, termination, sale, exchange, waiver, surrender
or release. None of the Administrative Agent, the Collateral Agent nor any
Lender shall have any obligation to protect, secure, perfect or insure any
collateral security document or property subject thereto at any time held as
security for the Obligations. When making any demand hereunder against HCNA or
any Borrower (in respect of its Guarantee hereunder), the Administrative Agent,
the Collateral Agent or any Lender may, but shall be under no obligation to,
make a similar demand on the relevant Borrower (in its capacity as a borrower)
or upon any other guarantor, and any failure by the Administrative Agent, the
Collateral Agent or such Lender to make any such demand or to collect any
payments from HCNA or any such Borrower or any such other guarantor or any
release of a Borrower or such other guarantor shall not relieve HCNA or any
other Borrower (in respect of its guarantee hereunder) of its obligations and
liabilities hereunder, and shall not impair or affect the rights and remedies,
express or implied, or as a matter of law, of the Administrative Agent, the
Collateral Agent or any Lender against HCNA or any Borrower. For purposes of
this subsection 11.3, the term "demand" shall include the commencement and
continuance of any legal proceedings.

                  11.4 Waiver. Each of HCNA and each Borrower hereby waives any
and all notice of the creation, renewal, extension or accrual of any of the
Obligations and notice of or proof of reliance by the Administrative Agent, the
Collateral Agent or any Lender upon the guarantees contained in this Section 11
or acceptance of the guarantees contained in this Section 11, and the
Obligations, and any of them, shall conclusively be deemed to have been created,
contracted or incurred in reliance upon the guarantees contained in this Section
11, and all dealings between the Borrowers or HCNA and the Administrative Agent,
the Collateral Agent or the Lenders shall likewise be conclusively presumed to
have been had or consummated in reliance upon the guarantees contained in this
Section 11. HCNA and each Borrower hereby waives diligence, presentment,
protest, demand for payment and notice of default or nonpayment to or upon HCNA
or such Borrower with respect to the Obligations. This Section 11 shall be
construed as continuing, absolute and unconditional guarantees of payment
without regard to the validity, regularity or enforceability of this Agreement,
the Notes, any Application, any Letter of Credit, any other Loan Document, any
of the Obligations, or any collateral security or guarantee therefor or right of
offset with respect thereto at any time or from time to time held by the
Administrative Agent, the Collateral Agent or any Lender and without regard to
any defense, set-off or counterclaim which may at any time be available to or be
asserted by HCNA or any Borrower against the Administrative Agent, the

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Collateral Agent or any Lender, or by any other circumstance whatsoever (with or
without notice to or knowledge of HCNA or any Borrower) (other than payment in
full of the Obligations) which constitutes, or might be construed to constitute,
an equitable or legal discharge of any Borrower for the Obligations or of HCNA
or any Borrower under the guarantees contained in this Section 11 in bankruptcy
or in any other instance, and the obligations and liabilities of HCNA and the
Borrowers hereunder shall not be conditioned or contingent upon the pursuit by
the Administrative Agent, the Collateral Agent or any Lender at any time of any
right or remedy against any Borrower or any other Person which may be or become
liable in respect of all or any part of the Obligations or against any
collateral security or guarantee therefor or right of offset with respect
thereto. The guarantees contained in this Section 11 shall remain in full force
and effect and be binding in accordance with and to the extent of their terms
upon HCNA and each Borrower (and any successors and assigns of either thereof)
and shall inure to the benefit of the Administrative Agent, the Collateral Agent
and the Lenders and their respective successors and assigns, until (subject to
subsection 11.5) all the Obligations and the obligations of HCNA and the
Borrowers under this Section 11 shall have been satisfied by payment in full,
notwithstanding that from time to time during the term of this Agreement the
Borrowers may be free from any Obligations.

                  11.5 Reinstatement. Each of the guarantees contained in this
Section 11 shall continue to be effective, or be reinstated, as the case may be,
if at any time payment, or any part thereof, of any of the Obligations is
rescinded or must otherwise be restored or returned by the Administrative Agent,
the Collateral Agent or any Lender upon the insolvency, bankruptcy, dissolution,
liquidation or reorganization of a Borrower, or upon or as a result of the
appointment of a receiver, intervenor or conservator of, or trustee or similar
officer for, a Borrower or any substantial part of its property or otherwise,
all as though such payments had not been made.

                  11.6 Payment of Obligations. HCNA and each Borrower hereby
guarantees that the Obligations will be paid to the Collateral Agent for the
account of the Lenders, the Collateral Agent or the Administrative Agent
entitled thereto without set-off or counterclaim at the office of the Collateral
Agent specified in subsection 14.3.


         SECTION 12. EVENTS OF DEFAULT

                  If any of the following events shall occur and be continuing:

                  (a) Any Borrower shall fail to pay (i) any principal of any
         Loan or any L/C Obligation when due in accordance with the terms
         thereof or hereof or (ii) any interest on any 

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         Loan, any commitment fee or any fee or commission relating to any
         Letter of Credit hereunder within three days (in the case of this
         clause (ii) only) after any such interest or other amount becomes due
         in accordance with the terms thereof or hereof; or

                  (b) Any representation or warranty made or deemed made by any
         Borrower or any other Loan Party herein or in any other Loan Document
         or which is contained in any certificate, document or financial or
         other statement furnished by it at any time under or in connection with
         this Agreement or any such other Loan Document shall prove to have been
         incorrect in any material respect on or as of the date made or deemed
         made; or

                  (c) Any Borrower or any other Loan Party shall default in the
         observance or performance of any agreement contained in Section 10 of
         this Agreement or any covenant contained in Section 4.3, 4.4 or
         subsection 4.5(a) of a Security Agreement; or

                  (d) Any Borrower or any other Loan Party shall default in the
         observance or performance of any other agreement contained in this
         Agreement or any other Loan Document (other than as provided in clauses
         (a) through (c) of this Section 12), and such default shall continue
         unremedied for a period of 30 days; or

                  (e) Any Event of Default shall have occurred and be continuing
         under the Canadian Credit Agreement; or

                  (f) (i) (A) HCNA or any of its Subsidiaries shall default in
         any payment of principal of or interest on any Indebtedness (other than
         Indebtedness owing under this Agreement or the Canadian Credit
         Agreement) or in the payment of any Guarantee Obligation (other than
         Guarantee Obligations under this Agreement or the Canadian Credit
         Agreement), beyond the period of grace, if any, provided in the
         instrument or agreement under which such Indebtedness or Guarantee
         Obligation was created; or (B) HCNA or any of its Subsidiaries shall
         default in the observance or performance of any other agreement or
         condition relating to any such Indebtedness or Guarantee Obligation or
         contained in any instrument or agreement evidencing, securing or
         relating thereto; or (C) any other event shall occur or condition
         exist, and (ii) the effect of such default or other event or condition
         is to immediately cause, or to permit the holder or holders of such
         Indebtedness or beneficiary or beneficiaries of such Guarantee
         Obligation (or a trustee or agent on behalf of such holder or holders
         or beneficiary or beneficiaries) to immediately cause such Indebtedness
         to become due prior to its stated maturity or such Guarantee Obligation
         to become payable (regardless of whether any such holder or
         beneficiary, as the case may be, has so caused

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         such Indebtedness to become due or such Guarantee Obligation to become
         payable); provided that such default or other event or condition shall
         not constitute an Event of Default hereunder unless the sum of (x) the
         aggregate amount of all such Indebtedness which has or could become due
         prior to its stated maturity and (y) the aggregate amount of such
         Guarantee Obligations which have or could become payable as a result of
         all such defaults or other events or conditions which are then
         outstanding, exceeds $5,000,000; or

                  (g) (i) HCNA or any of its Subsidiaries shall commence any
         case, proceeding or action, or (in the case of any Canadian Subsidiary)
         file a notice of intention to commence any of the foregoing, (A) under
         any existing or future law of any jurisdiction, domestic or foreign,
         relating to bankruptcy, insolvency, reorganization or relief of
         debtors, seeking to have an order for relief entered with respect to
         it, or seeking to adjudicate it a bankrupt or insolvent, or seeking
         reorganization, arrangement, adjustment, winding-up, liquidation,
         dissolution, composition or other relief with respect to it or its
         debts, or (B) seeking appointment of a receiver, trustee, custodian,
         conservator or other similar official for it or for all or any
         substantial part of its assets, or HCNA or any of its Subsidiaries
         shall make a general assignment for the benefit of its creditors; or
         (ii) there shall be commenced against HCNA or any of its Subsidiaries
         any case, proceeding or action of a nature referred to in clause (i)
         above which (A) results in the entry of an order for relief or any such
         adjudication or appointment or (B) remains undismissed, undischarged or
         unbonded for a period of 60 days; or (iii) there shall be commenced
         against HCNA or any of its Subsidiaries any case, proceeding or other
         action seeking issuance of a warrant of attachment, execution,
         distraint or similar process against all or any substantial part of its
         assets which results in the entry of an order for any such relief which
         shall not have been vacated, discharged, or stayed or bonded pending
         appeal within 60 days from the entry thereof; or (iv) HCNA or any of
         its Subsidiaries shall take any action in furtherance of, or indicating
         its consent to, approval of, or acquiescence in, any of the acts set
         forth in clause (i), (ii), or (iii) above; or (v) HCNA or any of its
         Subsidiaries shall generally not, or shall be unable to, or shall admit
         in writing its inability to, pay its debts as they become due or
         otherwise be insolvent under applicable law of any jurisdiction; or

                  (h) (i) Any Person shall engage in any "prohibited
         transaction" (as defined in Section 406 of ERISA or Section 4975 of the
         Code) involving any Plan, (ii) any "accumulated funding deficiency" (as
         defined in Section 302 of ERISA), whether or not waived, shall exist
         with respect to any Plan or any Lien in favor of the PBGC or a Plan
         shall arise on the assets of any Borrower or any Commonly 

                                      -99-

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         Controlled Entity, (iii) a Reportable Event shall occur with respect
         to, or proceedings shall commence to have a trustee appointed, or a
         trustee shall be appointed, to administer or to terminate, any Single
         Employer Plan, which Reportable Event or commencement of proceedings or
         appointment of a trustee is, in the reasonable opinion of the Aggregate
         Required Lenders, likely to result in the termination of such Plan for
         purposes of Title IV of ERISA, (iv) any Single Employer Plan shall
         terminate for purposes of Title IV of ERISA, (v) any Borrower or any
         Commonly Controlled Entity shall, or in the reasonable opinion of the
         Aggregate Required Lenders is likely to, incur any liability in
         connection with a withdrawal from, or the Insolvency or Reorganization
         of, a Multiemployer Plan or (vi) any other event or condition shall
         occur or exist with respect to a Plan; and in each case in clauses (i)
         through (vi) above, such event or condition, together with all other
         such events or conditions, if any, could reasonably be expected to have
         a Material Adverse Effect; or

                  (i) One or more judgments or decrees shall be entered against
         HCNA or any of its Subsidiaries involving in the aggregate a liability
         (to the extent not paid or fully covered by insurance provided by a
         carrier who has acknowledged in writing its liability under the
         relevant policy) of HCNA and its Subsidiaries of $1,000,000 or more,
         and all such judgments or decrees shall not have been vacated,
         discharged, stayed or bonded pending appeal within 60 days from the
         entry thereof; or

                  (j) (i) Any of the Security Documents shall cease, for any
         reason, to be in full force and effect, or any Borrower or any other
         Loan Party which is a party to any of the Security Documents shall so
         assert or (ii) the Lien created by any of the Security Documents shall
         cease to be enforceable and of the same effect and priority purported
         to be created thereby; or

                  (k) Any Guarantee (including, without limitation, any
         Guarantee pursuant to Section 11 of this Agreement) shall cease, for
         any reason, to be in full force and effect or any Guarantor shall so
         assert; or

                  (l) (i) A "Change of Control" under (and as defined in) any
         indenture governing the Public Debt shall have occurred or (ii) members
         of the senior management of HCNA and the Guarantors shall own, in the
         aggregate, less than 30% (or such higher percentage as may then be
         necessary to elect a majority of the directors of HCNA) of the issued
         and outstanding Voting Stock of HCG or (iii) any Person or "group"
         (within the meaning of Section 13(d) or 14(d) of the Securities
         Exchange Act of 1934, as amended) shall have acquired beneficial
         ownership of a larger percentage of the

                                     -100-

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         Voting Stock of HCG than is then beneficially owned by the members of
         senior management of HCNA and the Guarantors; or

                  (m) (i) HCG shall cease to own, beneficially or of record, 80%
         of the issued and outstanding Capital Stock of HCNA or (ii) HCNA or any
         of its wholly owned Subsidiaries shall cease to own, beneficially and
         of record, 100% of the issued and outstanding Capital Stock of each
         Borrower and each Guarantor existing on the Closing Date (other than
         HCNA);

then, and in any such event, (A) if such event is an Event of Default specified
in clause (i) or (ii) of Section 12(g) above with respect to any Borrower,
automatically the Commitments shall immediately terminate and the Loans
hereunder (with accrued interest thereon) and all other amounts owing under this
Agreement (including, without limitation, all amounts of L/C Obligations,
whether or not the beneficiaries of the then outstanding Letters of Credit shall
have presented the documents required thereunder) and the Loans shall
immediately become due and payable, and (B) if such event is any other Event of
Default, either or both of the following actions may be taken: (i) with the
consent of the Aggregate Required Lenders, the Administrative Agent may, or upon
the request of the Aggregate Required Lenders, the Administrative Agent shall,
by notice to the Borrowers declare the Commitments to be limited, restricted or
terminated forthwith, whereupon the Commitments shall immediately so be limited,
restricted or terminated; and (ii) with the consent of the Aggregate Required
Lenders, the Administrative Agent may, or upon the request of the Aggregate
Required Lenders, the Administrative Agent shall, by notice to the Borrowers,
declare the Loans hereunder (with accrued interest thereon) and all other
amounts owing under this Agreement (including, without limitation, all amounts
of L/C Obligations, whether or not the beneficiaries of the then outstanding
Letters of Credit shall have presented the documents required thereunder) and
the Loans to be due and payable forthwith, whereupon the same shall immediately
become due and payable (the date of any termination or declaration referred to
in this paragraph, the "Acceleration Date").

                  Except as expressly provided above in this Section 12,
presentment, demand, protest and all other notices of any kind are hereby
expressly waived.

         SECTION 13. THE ADMINISTRATIVE AGENT AND THE COLLATERAL AGENT

                  13.1 Appointment. Each Lender hereby irrevocably designates
and appoints (a) GE Capital as its Administrative Agent and its Collateral Agent
under this Agreement and the other Loan Documents. Each such Lender irrevocably
authorizes GE Capital (as its Administrative Agent or its Collateral Agent, as

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the case may be) to take such action on its behalf under the provisions of this
Agreement and the other Loan Documents and to exercise such powers and perform
such duties as are expressly delegated to the Administrative Agent or the
Collateral Agent, as the case may be, by the terms of this Agreement and the
other Loan Documents, together with such other powers as are reasonably
incidental thereto. Notwithstanding any provision to the contrary elsewhere in
this Agreement, neither the Administrative Agent nor the Collateral Agent shall
have any duties or responsibilities, except those expressly set forth herein,
nor any fiduciary relationship with any Lender, and no implied covenants,
functions, responsibilities, duties, obligations or liabilities shall be read
into this Agreement or any other Loan Document or otherwise exist against the
Administrative Agent or the Collateral Agent.

                  13.2 Delegation of Duties. (a) Each of the Administrative
Agent and the Collateral Agent may execute any of its duties under this
Agreement and the other Loan Documents by or through agents or attorneys-in-fact
and shall be entitled to advice of counsel concerning all matters pertaining to
such duties. Neither the Administrative Agent nor the Collateral Agent shall be
responsible for the negligence or misconduct of any agents or attorneys in-fact
selected by it with reasonable care.

                  (b) The Lenders hereby designate the Collateral Agent to act,
and the Collateral Agent hereby accepts such designation to act, as the Lenders'
nominee and agent to hold for the Lenders' benefit all Collateral that may from
time to time be in the possession or control of the Collateral Agent, including
(to the extent authorized under the Security Documents), without limitation, all
lock box, cash collateral and regular or special deposit or collateral accounts
containing from time to time proceeds of, or otherwise constituting, Collateral.

                  (c) Subject to the provisions of subsections 13.8 and 14.13
and the other terms hereof, each of the Lenders hereby irrevocably authorizes
the Collateral Agent to take such action for the benefit of the Lenders under
the provisions of the Security Documents and to exercise such powers and
remedies and to perform such duties hereunder and thereunder as are specifically
provided or delegated to or required of the Collateral Agent by the terms hereof
and thereof and such other powers as are reasonably incidental thereto, and
undertakes not to take any action on its own with respect to the Security
Documents or the Collateral.

                  13.3 Exculpatory Provisions. Neither the Administrative Agent
nor the Collateral Agent (nor any of the officers, directors, employees, agents,
attorneys-in-fact or Affiliates of either) shall be (i) liable for any action
taken or omitted to be taken by it or such Person under or in connection with
this Agreement or any other Loan Document (except for its or 

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such Person's own gross negligence or willful misconduct) or (ii) responsible in
any manner to any of the Lenders for any recitals, statements, representations
or warranties made by any Guarantor, any Borrower or any officer thereof
contained in this Agreement or any other Loan Document or in any certificate,
report, statement or other document referred to or provided for in, or received
by the Administrative Agent or the Collateral Agent under or in connection with,
this Agreement or any other Loan Document or for the value, validity,
effectiveness, genuineness, enforceability or sufficiency of this Agreement or
the Notes or any other Loan Document or for any failure of any Guarantor or any
Borrower to perform its obligations hereunder or thereunder. Neither the
Administrative Agent nor the Collateral Agent shall be under any obligation to
any Lender to ascertain or to inquire as to the observance or performance of any
of the agreements contained in, or conditions of, this Agreement or any other
Loan Document, or to inspect the properties, books or records of any Guarantor
or any Borrower.

                  13.4 Reliance by Administrative Agent and Collateral Agent.
Each of the Administrative Agent and the Collateral Agent shall be entitled to
rely, and shall be fully protected in relying, upon any Note, writing,
resolution, notice, consent, certificate, affidavit, letter, telecopy, telex or
teletype message, statement, order or other document or conversation believed by
it to be genuine and correct and to have been signed, sent or made by the proper
Person or Persons and upon advice and statements of legal counsel (including,
without limitation, counsel to any Guarantor or any of the Borrowers),
independent accountants and other experts selected by the Administrative Agent
or the Collateral Agent, as the case may be. Each of the Administrative Agent
and the Collateral Agent may deem and treat the payee of any Note as the owner
thereof for all purposes unless a written notice of assignment, negotiation or
transfer thereof shall have been filed with the Administrative Agent (with a
copy delivered to the Collateral Agent). Each of the Administrative Agent and
the Collateral Agent shall be fully justified in failing or refusing to take any
action under this Agreement or any other Loan Document unless it shall first
receive such advice or concurrence of the Aggregate Required Lenders, the
Required Lenders or the Majority Lenders, as it deems appropriate or it shall
first be indemnified to its satisfaction by the Lenders against any and all
liability and expense which may be incurred by it by reason of taking or
continuing to take any such action. Each of the Administrative Agent and the
Collateral Agent shall in all cases be fully protected in acting, or in
refraining from acting, under this Agreement and the Notes and the other Loan
Documents in accordance with a request of the Aggregate Required Lenders (or
such other number of Lenders as may be required pursuant to the Loan Documents),
and such request and any action taken or failure to act pursuant thereto shall
be binding upon all the Lenders and all future holders of the Notes.

                                      -1-3

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                  13.5 Notice of Default. Neither the Administrative Agent nor
the Collateral Agent shall be deemed to have knowledge or notice of the
occurrence of any Default or Event of Default hereunder unless the
Administrative Agent or the Collateral Agent, as the case may be, has received
notice from a Lender or a Borrower referring to this Agreement, describing such
Default or Event of Default and stating that such notice is a "notice of
default". In the event that the Administrative Agent receives such a notice, the
Administrative Agent shall give notice thereof to the Lenders and the Collateral
Agent. The Administrative Agent shall take such action with respect to such
Default or Event of Default as shall be reasonably directed by the requisite
number of Lenders hereunder and, to the extent required hereby, the requisite
number of Lenders under (and as defined in) the Canadian Credit Agreement, and
the Collateral Agent shall take such action with respect to such Default or
Event of Default as shall be reasonably directed by the requisite number of
Lenders hereunder and, to the extent required hereby, the requisite number of
Lenders under (and as defined in) the Canadian Credit Agreement (which, to the
extent provided herein or in the relevant Security Document, may be no Lenders);
provided that unless and until it shall have received such directions, the
Administrative Agent or the Collateral Agent, as the case may be, may (but shall
not be obligated to) take such action, or refrain from taking such action, with
respect to such Default or Event of Default as it shall deem advisable in the
best interests of the Lenders.

                  13.6 Non-Reliance on Administrative Agent, Collateral Agent
and Other Lenders. Each Lender expressly acknowledges that neither the
Administrative Agent nor the Collateral Agent (nor any of the officers,
directors, employees, agents, attorneys-in-fact or Affiliates of either) has
made any representations or warranties to it and that no act by the
Administrative Agent or the Collateral Agent hereinafter taken, including any
review of the affairs of any of the Guarantors or any of the Borrowers, shall be
deemed to constitute any representation or warranty by the Administrative Agent
or the Collateral Agent to any Lender. Each Lender represents to the
Administrative Agent and the Collateral Agent that it has, independently and
without reliance upon the Administrative Agent, the Collateral Agent or any
other Lender, and based on such documents and information as it has deemed
appropriate, made its own appraisal of and investigation into the business,
operations, property, financial and other condition and creditworthiness of each
Guarantor and each Borrower and made its own decision to make its extensions of
credit hereunder and enter into this Agreement. Each Lender also represents that
it will, independently and without reliance upon the Administrative Agent, the
Collateral Agent or any other Lender, and based on such documents and
information as it shall deem appropriate at the time, continue to make its own
credit analysis, appraisals and decisions in taking or not taking action under
this Agreement and the other Loan Documents, and to make such investigation as
it

                                      -1-4

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deems necessary to inform itself as to the business, operations, property,
financial and other condition and creditworthiness of the Guarantors and of the
Borrowers. Except for notices, reports and other documents expressly required to
be furnished to the Lenders by the Administrative Agent or the Collateral Agent
hereunder, neither the Administrative Agent nor the Collateral Agent, as the
case may be, shall have any duty or responsibility to provide any Lender with
any credit or other information concerning the business, operations, property,
condition (financial or otherwise), prospects or creditworthiness of any
Guarantor or any Borrower which may come into the possession of the
Administrative Agent or the Collateral Agent (or any of the officers, directors,
employees, agents, attorneys-in-fact or Affiliates of either).

                  13.7 Indemnification. The Lenders agree to indemnify each of
the Administrative Agent and the Collateral Agent (to the extent not reimbursed
by the Borrowers and without limiting the obligation of the Borrowers to do so),
ratably according to their respective Commitments Percentages in effect on the
date on which indemnification is sought under this subsection 13.7 (or, if
indemnification is sought after the date upon which the Commitments shall have
terminated and the Loans shall have been paid in full, ratably in accordance
with their Commitments Percentages immediately prior to such date), from and
against any and all liabilities, obligations, losses, damages, penalties,
actions, judgments, suits, costs, expenses or disbursements of any kind
whatsoever which may at any time (including, without limitation, at any time
following the payment of the Notes) be imposed on, incurred by or asserted
against the Administrative Agent or the Collateral Agent, as the case may be, in
any way relating to or arising out of this Agreement, any of the other Loan
Documents or any documents contemplated by or referred to herein or therein or
the transactions contemplated hereby or thereby or any action taken or omitted
by the Administrative Agent or the Collateral Agent under or in connection with
any of the foregoing; provided that no Lender shall be liable for the payment of
any portion of such liabilities, obligations, losses, damages, penalties,
actions, judgments, suits, costs, expenses or disbursements resulting solely
from the Administrative Agent's or the Collateral Agent's, as the case may be,
gross negligence or willful misconduct. The agreements in this subsection 13.7
shall survive the payment of the Notes and all other amounts payable hereunder.

                  13.8 Administrative Agent and Collateral Agent. Each of the
Administrative Agent and the Collateral Agent (and the Affiliates of each) may
make loans to, accept deposits from and generally engage in any kind of business
with the Borrowers as though it were not the Administrative Agent or the
Collateral Agent, as the case may be, hereunder and under the other Loan
Documents. With respect to its Loans made or renewed by it and any Note issued
to it and with respect to any Letter of Credit issued or participated in by it,
each of the Administrative Agent 

                                      -105-

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and the Collateral Agent shall have the same rights and powers under this
Agreement and the other Loan Documents as any Lender and may exercise the same
as though it were not the Administrative Agent or the Collateral Agent, as the
case may be, and the terms "Lender" or "Lenders", shall include each of the
Administrative Agent and the Collateral Agent.

                  13.9 Successor Administrative Agent and Collateral Agent. Each
of the Administrative Agent and the Collateral Agent may resign as
Administrative Agent or Collateral Agent, as the case may be, upon 10 days'
notice to the Lenders and the Borrowers. If the Administrative Agent or the
Collateral Agent shall so resign, then the Majority Lenders shall appoint from
among the Lenders a successor administrative agent or collateral agent, as the
case may be, for the Lenders, which successor administrative agent or collateral
agent shall be subject to the approval of the Borrowers (which approval shall
not be unreasonably withheld), whereupon such successor administrative agent or
collateral agent shall succeed to the rights, powers and duties of the
Administrative Agent or the Collateral Agent, as the case may be, and the term
"Administrative Agent" or "Collateral Agent" shall mean such successor
administrative agent or collateral agent effective upon such appointment and
approval, and the rights, powers and duties of the former Administrative Agent
or Collateral Agent (in its capacity as such), as the case may be, shall be
terminated, without any other or further act or deed on the part of such former
Administrative Agent or Collateral Agent or any of the parties to this Agreement
or any holders of the Notes. The resignation of the Administrative Agent or the
Collateral Agent shall not be effective until a successor administrative agent
or a successor collateral agent, as the case may be, shall have been so
appointed and approved. After any retiring Administrative Agent's or Collateral
Agent's resignation as such, the provisions of this Section 13 shall inure to
its benefit as to any actions taken or omitted to be taken by it while it was
Administrative Agent or Collateral Agent, as the case may be, under this
Agreement and the other Loan Documents.


         SECTION 14. MISCELLANEOUS

                  14.1 Amendments and Waivers. Neither this Agreement, any
Revolving Credit Note or any other Loan Document, nor any terms hereof or
thereof may be amended, restated, supplemented or modified except in accordance
with the provisions of this subsection 14.1. The Aggregate Required Lenders may,
or, with the written consent of the Aggregate Required Lenders, the
Administrative Agent may, from time to time, (a) enter into with the Borrowers
written amendments, supplements or modifications hereto and to the Revolving
Credit Notes and the other Loan Documents for the purpose of adding any
provisions to this Agreement, the Revolving Credit Notes or the other Loan
Documents or changing in any manner the rights of the Lenders, or any 

                                      -106-

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Borrower hereunder or thereunder or (b) waive, on such terms and conditions as
the Aggregate Required Lenders or the Administrative Agent, as the case may be,
may specify in such instrument, any of the requirements of this Agreement, the
Revolving Credit Notes or the other Loan Documents or any Default or Event of
Default and its consequences; provided, however, that no such waiver and no such
amendment, supplement or modification shall:

                         (i) reduce the amount or extend the scheduled date of
         maturity of any Revolving Credit Note or of any installment thereof, or
         reduce the stated rate of any interest or fee payable hereunder or
         extend the scheduled date of any payment thereof or extend the
         expiration date of any Lender's Commitment, in each case without the
         consent of each Lender directly affected thereby; or

                        (ii) amend, modify or waive any provision of this
         subsection 14.1 or reduce the percentage specified in the definition of
         Aggregate Required Lenders, Required Lenders or Majority Lenders, or
         consent to the assignment or transfer by any Borrower of any of its
         rights and obligations under this Agreement and the other Loan
         Documents or release all or substantially all of the Collateral or
         increase the amount of any Lender's Commitment or increase the
         percentages set forth as the advance rates in the definition of
         "Borrowing Base" contained in subsection 1.1, in each case without the
         written consent of all the Lenders; or

                       (iii) amend, modify or waive any provision of Section 13
         or any other provision of this Agreement governing the rights or
         obligations of the Administrative Agent or the Collateral Agent without
         the written consent of the then Administrative Agent or the then
         Collateral Agent, as the case may be; or

                        (iv) amend, modify or waive any provision of Section 3
         or any other provision of this Agreement governing the rights or
         obligations of any L/C Issuer without the written consent of each L/C
         Issuer that (1) is a Lender and (2) is adversely affected by such
         amendment, modification or waiver; or

                         (v) amend, modify or waive any provision of Section 5
         or any other provision of this Agreement governing the rights or
         obligations of the Swing Line Lender without the written consent of the
         Swing Line Lender.

Any such waiver and any such amendment, supplement or modification shall apply
equally to each of the Lenders and shall be binding upon the Borrowers, the
Lenders, the Administrative Agent, the Collateral Agent and all future holders
of the Loans. In the case of any waiver, the Borrowers, the Lenders, the

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Collateral Agent and the Administrative Agent shall be restored to their former
position and rights hereunder and under the outstanding Revolving Credit Notes
and any other Loan Documents, and any Default or Event of Default waived shall
be deemed to be cured and not continuing; but no such waiver shall extend to any
subsequent or other Default or Event of Default, or impair any right consequent
thereon.

                  14.2 [INTENTIONALLY OMITTED]

                  14.3 Notices. All notices, requests, demands and other
communications provided for hereunder to or upon the respective parties hereto
to be effective shall be in writing (including by telecopy), and, unless
otherwise expressly provided herein, shall be deemed to have been duly given or
made when delivered by hand or by overnight courier or 7 days after being
deposited in the mail, postage prepaid, or, in the case of telecopy notice, when
received, addressed as follows in the case of the Borrowers, the Collateral
Agent, the Administrative Agent and HCNA, and as set forth in Schedule I in the
case of the other parties hereto, or to such other address as may be hereafter
notified by the respective parties hereto and any future holders of the Notes:

         The Borrowers and HCNA:   c/o Harris Chemical North America, Inc.
                                   399 Park Avenue - 32nd Floor
                                   New York, New York  10022
                                   Attention:  Senior Vice President Finance
                                                 and Treasurer
                                   Telecopy:  (212) 207-6440

         with a copy to:           Winthrop, Stimson, Putnam & Roberts
                                   One Battery Park Plaza
                                   New York, New York  10004
                                   Attention:  Joseph Owens
                                   Telecopy:  (212) 858-1500

         The Collateral Agent and the 
            Administrative Agent (other than
            borrowing, prepayment or issuance 
            notices with respect to 
            Loans or Letters of Credit):         
                                         General Electric Capital Corporation
                                         201 High Ridge Road
                                         Stamford, Connecticut  06927-5100
                                         Attention:  Harris Account Manager
                                         Telecopy:  (203) 316-7893

         with copies to:                 General Electric Capital Corporation
                                         201 High Ridge Road
                                         Stamford, Connecticut  06927-5100

                                     -108-

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                                         Attention:  Region Counsel--Commercial
                                                          Finance
                                         Telecopy:  (203) 316-7889

                  and                    Simpson Thacher & Bartlett
                                         425 Lexington Avenue
                                         New York, New York  10017
                                         Attention:  James C. Buresh
                                         Telecopy:  (212) 455-2502

         The Administrative Agent
            (borrowing, prepayment or issuance
            notices with respect to Loans or
            Letters of Credit only):       General Electric Capital
                                           Corporation
                                         201 High Ridge Road
                                         Stamford, Connecticut  06927-5100
                                         Attention:  Harris Portfolio Analyst
                                         Telecopy:  (203) 316-7816/7817

provided that any notice, request or demand to or upon the Administrative Agent,
the Collateral Agent or the Lenders pursuant to subsection 2.5, 6.2, 6.3, 6.6,
6.11(b) or 6.15 shall not be effective until received.

                  14.4 No Waiver; Cumulative Remedies. No failure to exercise
and no delay in exercising, on the part of the Collateral Agent, the
Administrative Agent or any Lender, any right, remedy, power or privilege
hereunder or under the other Loan Documents shall operate as a waiver thereof;
nor shall any single or partial exercise of any right, remedy, power or
privilege hereunder preclude any other or further exercise thereof or the
exercise of any other right, remedy, power or privilege. The rights, remedies,
powers and privileges herein provided are cumulative and not exclusive of any
rights, remedies, powers and privileges provided by law.

                  14.5 Survival of Representations and Warranties. All
representations and warranties made hereunder, in the other Loan Documents and
in any document, certificate or statement delivered pursuant hereto or in
connection herewith shall survive the execution and delivery of this Agreement
and the Notes and the making of the Loans hereunder.

                  14.6 Payment of Expenses and Taxes. The Borrowers agree to:

                  (a) pay or reimburse each of the Administrative Agent and the
Collateral Agent for all of their reasonable out-of-pocket costs and expenses
incurred in connection with the development, preparation and execution of this
Agreement, the Notes and the other Loan Documents and any other documents
prepared in connection herewith or therewith, and the 

                                     -109-

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consummation of the transactions contemplated hereby and thereby, including,
without limitation, the reasonable fees and disbursements of the several counsel
to the Administrative Agent and the Collateral Agent;

                  (b) pay or reimburse the Administrative Agent and (only to the
extent that such amendment, supplement, modification or administration directly
relates to (x) the Collateral, (y) the responsibilities of the Collateral Agent
in its capacity as such or (z) the occurrence and continuance of a Default or an
Event of Default) the Collateral Agent for all of their reasonable out-of-pocket
costs and expenses incurred in connection with any amendment, supplement or
modification to, and the administration of, this Agreement, the Notes and the
other Loan Documents and any other documents prepared in connection herewith or
therewith, and the transactions contemplated hereby and thereby, including,
without limitation, the reasonable fees and disbursements of counsel to the
Administrative Agent and (only to the extent that such amendment, supplement,
modification or administration directly relates to (x) the Collateral, (y) the
responsibilities of the Collateral Agent in its capacity as such or (z) the
occurrence and continuance of a Default or an Event of Default) counsel to the
Collateral Agent;

                  (c) pay or reimburse the Lenders, the Collateral Agent and the
Administrative Agent for all of their reasonable costs and expenses incurred in
connection with the enforcement or preservation of any rights under this
Agreement, the Notes, the other Loan Documents and any such other documents, and
for any reasonable costs and expenses incurred in connection with any
proceedings under any bankruptcy, reorganization, compromise, arrangement,
insolvency, restructuring, debt, dissolution or liquidation or similar law;
provided that, in the case of fees and expenses of counsel to the Lenders, the
Collateral Agent and the Administrative Agent, the Borrowers shall be obligated
under this subsection 14.6(c) to pay only the reasonable fees and disbursements
of a single special counsel and any necessary local counsel to the
Administrative Agent, the Collateral Agent and the Lenders collectively (or in
the event that any such enforcement or preservation of rights involves matters
in which the interests of the Administrative Agent, the Collateral Agent and the
Lenders are materially distinct, a single special counsel and any necessary
local counsel to the Administrative Agent, a single special counsel and any
necessary local counsel to the Collateral Agent and a single special counsel and
any necessary local counsel to the Lenders taken as a whole), provided that in
each case the foregoing obligations shall apply to no more than one local
counsel per jurisdiction;

                  (d) pay, indemnify, and hold each Lender, the Collateral Agent
and the Administrative Agent harmless from, any and all recording and filing
fees and any and all liabilities with respect to, or resulting from any delay in
paying, stamp, excise and other taxes (other than income taxes), if any, which

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may be payable or determined to be payable in connection with the execution and
delivery of, or consummation or administration of any of the transactions
contemplated by, or any amendment, supplement or modification of, or any waiver
or consent under or in respect of, this Agreement, the Notes, the other Loan
Documents and any such other documents prepared in connection herewith or
therewith;

                  (e) subject to the foregoing provisions of this subsection
14.6 with respect to the payment of costs, expenses and disbursements for the
matters expressly specified therein, pay, indemnify, and hold each Lender, the
Collateral Agent and the Administrative Agent harmless from and against any and
all other liabilities, obligations, losses, damages, penalties, actions,
judgments, suits, and related reasonable costs, expenses or disbursements of any
kind or nature whatsoever with respect to the execution, delivery, enforcement,
performance and administration of this Agreement, the Notes, the other Loan
Documents and any such other documents prepared in connection herewith or
therewith, including, without limitation, any of the foregoing relating to the
violation of, noncompliance with or liability under, any Environmental Law
applicable to the operations of any Borrower, any of its Subsidiaries or any of
the Properties (all the foregoing in this clause (e), collectively, the
"indemnified liabilities"), provided, that no Borrower shall have any obligation
hereunder to the Administrative Agent, the Collateral Agent or any Lender with
respect to indemnified liabilities arising from (i) the gross negligence or
willful misconduct of the Administrative Agent, the Collateral Agent or any such
Lender or (ii) legal proceedings commenced against the Administrative Agent, the
Collateral Agent or any such Lender by any security holder or creditor thereof
arising out of and based upon rights afforded any such security holder or
creditor solely in its capacity as such; and

                  (f) subject to the foregoing provisions of this subsection
14.6 with respect to the payment of costs, expenses and disbursements for the
matters expressly specified therein, pay, indemnify and hold the Administrative
Agent and each Lender harmless from and against any and all other liabilities,
obligations, losses, damages, penalties, actions, judgments, suits, and related
reasonable costs, expenses or disbursements of any kind or nature whatsoever
with respect to the failure of the Administrative Agent or any Lender seeking
indemnification or of any L/C Issuer to honor a demand for payment under any
Letter of Credit or guaranty thereof as a result of compliance by the
Administrative Agent or any such Lender or L/C Issuer (or any corporation
controlling such Person) with any request or directive (whether or not having
the force of law) from any present or future de jure or de facto government or
Governmental Authority, provided, that no Borrower shall have an obligation
hereunder to the Administrative Agent or any Lender with respect to any such
indemnified liabilities arising from the gross

                                     -111-

<pg$pcn>
negligence or willful misconduct of the Administrative Agent or such Lender, as
the case may be; and

                  (g) the agreements in this subsection 14.6 shall survive
repayment of the Notes and all other amounts payable hereunder.

                  14.7 Successors and Assigns; Participations and Assignments.
(a) This Agreement shall be binding upon and inure to the benefit of the
Borrowers, the Lenders, the Administrative Agent, the Collateral Agent, all
other parties to this Agreement, all future holders of the Notes and their
respective successors and assigns, except that no Borrower may assign or
transfer any of its rights or obligations under this Agreement without the prior
written consent of each Lender.

                  (b) Any Lender may, in the ordinary course of its business and
in accordance with applicable law, at any time sell to one or more banks or
other entities ("Participants") participating interests in any Loan owing to
such Lender, any Note held by such Lender, any Commitment of such Lender or any
other interest of such Lender hereunder and under the other Loan Documents. In
the event of any such sale by a Lender of a participating interest to a
Participant:

                  (i) such Lender's obligations under this Agreement to the
         other parties to this Agreement shall remain unchanged, such Lender
         shall remain solely responsible for the performance thereof;

                  (ii) such Lender shall remain the holder of any such Note for
         all purposes under this Agreement and the other Loan Documents;

                  (iii) the Borrowers and the Administrative Agent shall
         continue to deal solely and directly with such Lender in connection
         with such Lender's rights and obligations under this Agreement and the
         other Loan Documents; and

                  (iv) such Participant shall have no right to enforce the
         obligations of any Borrower or any other Loan Party relating to the
         Obligations or to approve any amendment, modification or waiver of any
         provision of this Agreement, other than any amendment, modification,
         supplement or waiver decreasing any fees payable hereunder or the
         amount of principal of or the rate at which interest is payable on the
         Loans and L/C Obligations, extending the scheduled final maturity of
         the Loans or any date scheduled for payment of interest on the Loans or
         any fees, extending the Commitments or releasing any material
         Collateral or Guarantee; provided in the case of any of the foregoing,
         that the interests held by such Participant are directly affected by
         such amendment, modification, supplement or waiver.

                                     -112-

<pg$pcn>
Each Borrower agrees that if amounts outstanding under this Agreement and the
Notes are due or unpaid, or shall have been declared or shall have become due
and payable upon the occurrence of an Event of Default, each Participant shall
be deemed to have the right of setoff in respect of its participating interest
in amounts owing under this Agreement and any Note to the same extent as if the
amount of its participating interest were owing directly to it as a Lender under
this Agreement or any Note, provided that, in purchasing such participating
interest, such Participant shall be deemed to have agreed to share with the
Lenders the proceeds thereof as provided in subsection 14.8(a) as fully as if it
were a Lender hereunder. Each Borrower also agrees that each Participant shall
be entitled to the benefits of subsections 6.13, 6.14 and 6.16 with respect to
its participation in the Commitments and the Loans outstanding from time to time
as if it was a Lender; provided that, in the case of subsection 6.14, such
Participant shall have complied with the requirements of said subsection 6.14;
and provided, further, that no Participant shall be entitled to receive any
greater amount pursuant to any such subsection than the transferor Lender would
have been entitled to receive in respect of the amount of the participation
transferred by such transferor Lender to such Participant had no such transfer
occurred.

                  (c) Any Lender may, in the ordinary course of its business and
in accordance with applicable law, at any time and from time to time assign to
(an "Assignee"):

                  (i) any Lender or any affiliate thereof, with the consent of
         the Administrative Agent (which shall not be unreasonably withheld); or

                  (ii) an additional bank, financial institution or other
         entity, with the consent of the Administrative Agent and the Borrowers
         (which shall not be unreasonably withheld and, except as set forth in
         subsection 14.7(e), shall not require the making of any additional
         payment to the Administrative Agent or any Borrower), provided that
         such consent of the Borrowers shall not be required at any time when an
         Event of Default has occurred and is continuing;

all or any part of its rights and obligations under this Agreement and the Notes
pursuant to an assignment and acceptance, substantially in the form of Exhibit H
(the "Assignment and Acceptance"), executed by such Assignee, such assigning
Lender and the Administrative Agent (and, in the case of an Assignee that is not
then a Lender or an affiliate thereof, by the Borrowers) and delivered to the
Administrative Agent for its acceptance and recording in the Register; provided
that:

                  (x) in the case of any such assignment to an Assignee which is
         not a Lender or an Affiliate thereof (before giving effect to such
         assignment), (i) the sum of the portion of the Aggregate Commitment
         hereunder and the portion of the 

                                     -113-

<pg$pcn>
         Aggregate Commitment under (and as defined in) the Canadian Credit
         Agreement which are so assigned shall be not less than $5,000,000 and
         (ii) unless such assignment is of all of such assigning Lender's
         Commitment, such assigning Lender shall (after giving effect to such
         assignment) have a Commitment hereunder and a Commitment under (and as
         defined in) the Canadian Credit Agreement of not less than $5,000,000
         in the aggregate; and

                  (y) notwithstanding the provisions of clause (x)(ii) above, no
         such assignment shall be permitted hereunder if such assigning Lender
         (or any Affiliate thereof) (1) holds any Commitment, or other rights or
         obligations, under (and as defined in) the Canadian Credit Agreement
         and (2) will, after giving effect to such assignment hereunder, have a
         Commitment hereunder (and as defined herein) of less than $5,000,000.

Upon such execution, delivery, acceptance and recording, from and after the
effective date determined pursuant to such Assignment and Acceptance, (x) the
Assignee thereunder shall be a party hereto and, to the extent provided in such
Assignment and Acceptance, have the rights and obligations of a Lender hereunder
with a Commitment, as set forth therein, and (y) the assigning Lender thereunder
shall, to the extent provided in such Assignment and Acceptance, be released
from its obligations under this Agreement (and, in the case of an Assignment and
Acceptance covering all or the remaining portion of an assigning Lender's rights
and obligations under this Agreement, such assigning Lender shall cease to be a
party hereto).

                  (d) The Administrative Agent shall maintain at its address
referred to in subsection 14.3 a copy of each Assignment and Acceptance
delivered to it and a register (the "Register") for the recordation of the names
and addresses of the Lenders and the Commitment of, and principal amount of the
Loans owing to, each Lender from time to time. The entries in the Register shall
be conclusive, in the absence of manifest error, and the Borrowers, the
Administrative Agent, the Collateral Agent and the Lenders may treat each Person
whose name is recorded in the Register as the owner of the Loan recorded therein
for all purposes of this Agreement. The Register shall be available for
inspection by any Borrower or any Lender at any reasonable time and from time to
time upon reasonable prior notice.

                  (e) Upon its receipt of an Assignment and Acceptance executed
by an assigning Lender, an Assignee and the Administrative Agent (and, in the
case of an Assignee that is not then a Lender or an affiliate thereof, by the
Borrowers), together with payment to the Administrative Agent of a registration
and processing fee of $3,000 (or, in the case of an Assignee which is then a
Lender or an affiliate thereof, $500), the Administrative Agent shall (i)
promptly accept such Assignment and Acceptance and (ii) on the effective date

                                      -114

<pg$pcn>
determined pursuant thereto record the information contained therein in the
Register and give notice of such acceptance and recordation to the Lenders and
the Borrowers. Promptly following receipt of such notice, each Borrower, at its
own expense, shall execute and deliver to the Administrative Agent (in exchange
for the Revolving Credit Note of the assigning Lender) a new Revolving Credit
Note to the order of such Assignee in an amount equal to the Commitment assumed
by it pursuant to such Assignment and Acceptance and, if the assigning Lender
has retained a Commitment hereunder, a new Revolving Credit Note to the order of
the assigning Lender in an amount equal to the Commitment retained by it
hereunder. Such new Notes shall be dated the Original Closing Date and shall
otherwise be in the form of the Note replaced thereby.

                  (f) HCNA and each Borrower authorizes each Lender to disclose
to any Participant or Assignee (each, a "Transferee") and any prospective
Transferee any and all financial information in such Lender's possession
concerning the Borrowers, their Subsidiaries and their Affiliates which has been
delivered to such Lender by or on behalf of HCNA or any Borrower pursuant to
this Agreement or which has been delivered to such Lender by or on behalf of
HCNA or any Borrower in connection with such Lender's credit evaluation of the
Borrowers and their Affiliates prior to becoming a party to this Agreement;
provided that each such Transferee or prospective Transferee, as the case may
be, agrees to be bound by the same standard of confidentiality as is required of
such Lender hereunder and under the other Loan Documents.

                  (g) Nothing herein shall prohibit any Lender from pledging or
assigning any Note to any Federal Reserve Bank in accordance with applicable
law.

                  14.8 Adjustments; Set-off. (a) If any Lender (a "benefitted
Lender") shall at any time receive any payment of all or part of its Loans or
the L/C Obligations owing to it, or interest thereon, or receive any collateral
in respect thereof (whether voluntarily or involuntarily, by set-off, pursuant
to events or proceedings of the nature referred to in Section 12(g), or
otherwise), in a greater proportion than any such payment to or collateral
received by any other Lender, if any, in respect of such other Lender's Loans or
the L/C Obligations owing to it, or interest thereon, such benefitted Lender
shall purchase for cash from the other Lenders a participating interest in such
portion of each such other Lender's Loan or the L/C Obligations owing to it, or
shall provide such other Lenders with the benefits of any such collateral, or
the proceeds thereof, as shall be necessary to cause such benefitted Lender to
share the excess payment or benefits of such collateral or proceeds ratably with
each of the Lenders; provided, however, that if all or any portion of such
excess payment or benefits is thereafter recovered from such benefitted Lender,
such purchase shall be rescinded, and the 

                                     -115-

<pg$pcn>
purchase price and benefits returned, to the extent of such recovery, but
without interest.

                  (b) In addition to any rights and remedies of the Lenders
provided by law, each Lender shall have the right, without prior notice to any
Borrower, any such notice being expressly waived by each Borrower to the extent
permitted by applicable law, upon any amount becoming due and payable by any
Borrower hereunder or under the Notes (whether at the stated maturity, by
acceleration or otherwise) to set-off and appropriate and apply against such
amount any and all deposits (general or special, time or demand, provisional or
final), in any currency, and any other credits, indebtedness or claims, in any
currency, in each case whether direct or indirect, absolute or contingent,
matured or unmatured, at any time held or owing by such Lender or any branch or
agency thereof to or for the credit or the account of any Borrower. Each Lender
agrees promptly to notify the relevant Borrower and the Administrative Agent
after any such set-off and application made by such Lender, provided that the
failure to give such notice shall not affect the validity of such set-off and
application.

                  14.9 Designation under Senior Subordinated Notes. HCNA hereby
irrevocably agrees that all amounts from time to time outstanding under this
Agreement, the Applications and the Notes and all other Obligations, and any
refinancing, refunding or renewal thereof, shall be deemed to be and shall be
"Designated Senior Debt" for purposes of (and as defined in) the Senior
Subordinated Notes. HCNA hereby represents and warrants that it has provided
written notice of such designation to IBJ Schroder Bank & Trust Company, as
trustee under the indenture governing the Senior Subordinated Notes and hereby
covenants promptly to take any such action as may be necessary or as otherwise
reasonably may be requested by the Administrative Agent in order to maintain
such designation.

                  14.10 Counterparts. This Agreement may be executed by one or
more of the parties to this Agreement on any number of separate counterparts
(including by telecopy), and all of said counterparts taken together shall be
deemed to constitute one and the same instrument. A set of the copies of this
Agreement signed by all the parties shall be lodged with the Borrowers and the
Administrative Agent.

                  14.11 Severability. Any provision of this Agreement which is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

                  14.12 Integration. This Agreement and the other Loan Documents
represent the agreement of the Borrowers, the 

                                     -116-

<pg$pcn>
Administrative Agent, the Collateral Agent and the Lenders with respect to the
subject matter hereof, and there are no promises, undertakings, representations
or warranties by the Administrative Agent, the Collateral Agent or any Lender
relative to subject matter hereof not expressly set forth or referred to herein
or in the other Loan Documents.

                  14.13 Separate Obligations. Notwithstanding anything to the
contrary contained herein, each representation, warranty, covenant or other
undertaking made by HCNA or any of its Subsidiaries hereunder shall apply to or
be binding upon HCNA or such Subsidiary, as the case may be, and any of its
respective Subsidiaries, but shall not apply to or be binding upon any other
Person which is not a party hereto.

                  14.14 Application of Proceeds of Collateral. (a) Each of the
Administrative Agent, the Collateral Agent and each Lender hereby acknowledges
the agreement of the Lenders under (and as defined in) the Canadian Credit
Agreement that such Canadian Lenders shall not be entitled to receive the
proceeds of any Collateral provided pursuant to the Security Documents under
this Agreement or any Guarantee hereunder until such Canadian Lenders have used
their diligent efforts to realize upon the Collateral under (and as defined in)
the Canadian Credit Agreement; provided that the restrictions contained in this
subsection 14.14 shall terminate immediately upon notice from the Majority
Lenders under (and as defined in) the Canadian Credit Agreement to the
Administrative Agent and the Collateral Agent hereunder that such diligent
efforts have been used. Following receipt by the Administrative Agent and the
Collateral Agent of any such notice, any proceeds from the realization of
Collateral shall be applied to the Obligations hereunder and the Obligations
under (and as defined in) the Canadian Credit Agreement in such a manner so that
the holders of the Obligations hereunder shall have received (to the extent that
such proceeds are sufficient to do so) payment on the same percentage of the
aggregate amount of the Obligations hereunder as the holders of the Obligations
under (and as defined in) the Canadian Credit Agreement shall have received of
the Obligations (as defined in the Canadian Credit Agreement) thereunder.

                  (b) Each of the Administrative Agent, the Collateral Agent and
each Lender hereby acknowledges the agreement of the Administrative Agent, the
Collateral Agent and each Lender under (and as defined in) the Canadian Credit
Agreement that such Persons shall not be entitled to receive the proceeds of any
Collateral provided pursuant to the Security Documents hereunder or any
Guarantee hereunder to the extent that the Administrative Agent, the Collateral
Agent and the Lenders under (and as defined in) the Canadian Credit Agreement
have received any payment of all or part of the amounts owing to it thereunder
and under the other Loan Documents (as defined therein), or have received any
collateral in respect thereof (whether voluntarily or involuntarily, by set-off,
pursuant to events or proceedings of 

                                     -117-

<pg$pcn>
the nature referred to in subsection 12(g) of the Canadian Credit Agreement or
otherwise), in a greater proportion than any such payment to or collateral
received by the Administrative Agent, the Collateral Agent and the Lenders
hereunder in respect of amounts owing to them hereunder and under the Loan
Documents.

                  (c) Notwithstanding anything to the contrary contained herein,
the foregoing provisions of this subsection 14.14 and subsection 14.14 of the
Canadian Credit Agreement are intended to constitute an inter-creditor agreement
between the Lenders hereunder and the Lenders under (and as defined in) the
Canadian Credit Agreement. The foregoing provisions of this subsection 14.14 are
not intended to inure to the benefit of any third party beneficiaries and
nothing contained herein shall be deemed to impair the perfection and/or
priority of security interests and other rights of the Lenders hereunder and
Lenders under (and as defined in) the Canadian Credit Agreement in the
Collateral hereunder or thereunder (and as defined therein).

                  (d) Each of the parties hereto acknowledges and agrees that,
so long as there shall have occurred and be continuing any Event of Default
under Section 12(a)(ii) as a result of a failure to pay (x) interest due on the
Revolving Credit Loans, (y) commitment fees on the Commitments or (z) fees or
commissions related to any Letter of Credit, proceeds of amounts received by it
pursuant to the Lock Box Agreements shall be applied in the order specified in
the first proviso to subsection 6.4(c) and that after an acceleration of the
Loans pursuant to Section 12 all proceeds of the Collateral that are applied to
the Obligations shall be applied in the order specified in the second proviso to
subsection 6.4(c). Notwithstanding anything to the contrary contained herein,
the provisions of this paragraph are intended to constitute an inter-creditor
agreement between the Lenders. The provisions of this paragraph are not intended
to inure to the benefit of any third party beneficiaries, and nothing contained
herein shall be deemed to impair the perfection and/or priority of security
interests and other rights of the Lenders in the Collateral.

                  14.15  GOVERNING LAW.  THIS AGREEMENT AND THE NOTES
AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES UNDER THIS AGREEMENT AND THE NOTES
SHALL BE GOVERNED BY, AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAW
OF THE STATE OF NEW YORK.

                  14.16 Submission to Jurisdiction; Waivers. HCNA and each
Borrower hereby irrevocably and unconditionally:

                  (a) submits for itself and its property in any legal action or
         proceeding relating to this Agreement and the other Loan Documents to
         which it is a party, or for recognition and enforcement of any
         judgement in respect thereof, to the non-exclusive general jurisdiction
         of the courts of the State of New York, the courts of the 

                                     -118-

<pg$pcn>
         United States of America for the Southern District of New York, and
         appellate courts from any thereof;

                  (b) consents that any such action or proceeding may be brought
         in such courts and waives any objection that it may now or hereafter
         have to the venue of any such action or proceeding in any such court or
         that such action or proceeding was brought in an inconvenient court and
         agrees not to plead or claim the same;

                  (c) agrees that service of process in any such action or
         proceeding may be effected by mailing a copy thereof by registered or
         certified mail (or any substantially similar form of mail), postage
         prepaid, to HCNA or such Borrower at its address set forth in
         subsection 14.3 or at such other address of which the Administrative
         Agent shall have been notified pursuant thereto;

                  (d) agrees that nothing herein shall affect the right to
         effect service of process in any other manner permitted by law or shall
         limit the right to sue in any other jurisdiction; and

                  (e) waives, to the maximum extent not prohibited by law and in
         the absence of bad faith on the part of the Administrative Agent, the
         Collateral Agent or a Lender (with such waiver, in the case of any such
         bad faith, ceasing to be effective only as to the Administrative Agent,
         the Collateral Agent or such Lender as the case may be), any right it
         may have to claim or recover in any legal action or proceeding referred
         to in this subsection any special, exemplary, punitive or consequential
         damages.

                  14.17 Acknowledgements. HCNA and each Borrower hereby
acknowledges that:

                  (a) it has been advised by counsel in the negotiation,
         execution and delivery of this Agreement and the Notes and the other
         Loan Documents;

                  (b) none of the Administrative Agent, the Collateral Agent nor
         any Lender has any fiduciary relationship with or duty to HCNA or any
         Borrower arising out of or in connection with this Agreement or any of
         the other Loan Documents, and the relationship between Administrative
         Agent, the Collateral Agent and Lenders, on the one hand, and HCNA and
         each Borrower, on the other hand, in connection herewith or therewith
         is solely that of debtor and creditor; and

                  (c) no joint venture is created hereby or by the other Loan
         Documents or otherwise exists by virtue of the transactions
         contemplated hereby among the Lenders or among HCNA or any Borrower and
         the Lenders.

                                     -119-

<pg$pcn>
                  14.18  WAIVERS OF JURY TRIAL.  HCNA, THE BORROWERS, THE
ADMINISTRATIVE AGENT, THE COLLATERAL AGENT AND THE LENDERS HEREBY IRREVOCABLY
AND UNCONDITIONALLY WAIVE TRIAL BY JURY IN ANY LEGAL ACTION OR PROCEEDING
RELATING TO THIS AGREEMENT OR THE NOTES OR ANY OTHER LOAN DOCUMENT AND FOR ANY
COUNTERCLAIM THEREIN.

                  14.19 Confidentiality. (a) Each of the Administrative Agent
and each Lender agrees to keep confidential all non-public information provided
to it by any Borrower pursuant to this Agreement that is designated by such
Borrower as confidential and all copies thereof and extracts therefrom; provided
that nothing herein shall prevent the Administrative Agent or any Lender from
disclosing any such information (i) to the Administrative Agent, any other
Lender or, on a need-to-know basis, any affiliate of any Lender, (ii) to any
Transferee or prospective Transferee which agrees to comply with the provisions
of this Section 14.19, (iii) on a need-to-know basis, to the employees,
directors, agents, attorneys, accountants and other professional advisors of
such Lender or its affiliates, (iv) upon the request or demand of any
Governmental Authority having jurisdiction over the Administrative Agent or such
Lender, (v) in response to any order of any court or other Governmental
Authority or as may otherwise be required pursuant to any Requirement of Law,
(vi) if requested or required to do so in connection with any litigation or
similar proceeding, (vii) which has been publicly disclosed other than in breach
of this Section 14.19, or (viii) in connection with the exercise of any remedy
hereunder or under any other Loan Document.

                  (b) Except as required by Requirements of Law, each of HCNA
and the Borrowers hereby agrees that it will not, and will not permit any one
acting on its behalf, to issue, authorize or release for external publication or
distribution any article, press release, advertisement or other publicity
material in any media disclosing the name of the Administrative Agent, the
Collateral Agent or any of the Lenders, without the prior written consent of the
affected Person.

                  (c) Except as required by Requirements of Law or in connection
with the enforcement or preservation of any rights under this Agreement, the
Notes and the other Loan Documents, each of the Administrative Agent, the
Collateral Agent and each of the Lenders hereby agrees that it will not, and
will not permit any one acting on its behalf, to issue, authorize or release for
external publication or distribution any article, press release, advertisement
or other publicity material in any media disclosing the name of HCNA or any of
its Subsidiaries, without the prior written consent of HCNA.

                                     -120-

<pg$pcn>
                  IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be duly executed and delivered by their proper and duly authorized
officers as of the day and year first above written.

                                        NORTH AMERICAN CHEMICAL
                                        COMPANY, as a Borrower and as a
                                        Guarantor


                                        By:____________________________________
                                           Name:
                                           Title:
                                        
                                        NORTH AMERICAN SALT COMPANY,
                                        as a Borrower and as a Guarantor
                                        
                                        
                                        By:____________________________________
                                           Name:
                                           Title:
                                        
                                        GREAT SALT LAKE MINERALS
                                        CORPORATION, as a Borrower and as a
                                        Guarantor
                                        
                                        
                                        By:____________________________________
                                           Name:
                                           Title:
                                        
                                        HARRIS CHEMICAL NORTH AMERICA,
                                        INC., as a Guarantor
                                        
                                        
                                        By:____________________________________
                                           Name:
                                           Title:
                                        
                                        GENERAL ELECTRIC CAPITAL
                                        CORPORATION, as Administrative Agent,
                                        as Collateral Agent and as a Lender
                                        
                                        
                                        By:____________________________________
                                           Name:  Rick Luck
                                           Title:  Vice President,
                                                  GE Capital Commercial
                                                  Finance, Inc.,
                                                  Being Duly Authorized

                                     -121-

<pg$pcn>
                                        THE FIRST NATIONAL BANK OF
                                        BOSTON, as a Lender
                                        
                                        
                                        By:____________________________________
                                           Name:
                                           Title:
                                        
                                        
                                        THE CIT GROUP/BUSINESS CREDIT,
                                        INC., as a Lender
                                        
                                        
                                        By:____________________________________
                                           Name:
                                           Title:
                                        
                                        
                                        HELLER FINANCIAL, INC., as a Lender
                                        
                                        
                                        By:____________________________________
                                           Name:
                                           Title:


                                        BANKAMERICA, as a Lender


                                        By:____________________________________
                                           Name:
                                           Title:

                                     -122-

<pg$pcn>
                                                                      SCHEDULE I
                                                             to Credit Agreement

                              ADDRESSES FOR NOTICES



<TABLE>
<CAPTION>
GENERAL ELECTRIC CAPITAL CORPORATION

<S>                                         <C>
For Funding Requests:                       Other Notices:                    
                                                                              
201 High Ridge Road                         201 High Ridge Road               
Stamford, CT 06926                          Stamford, CT  06927               
Attention:  Harris Portfolio Analyst        Attention:  Harris Account Manager
Telephone:  (203) 316-7500                  Telephone:  (203) 316-7500        
Telecopier:  (203) 316-7817 or 7816         Telecopier:  (203) 316-7893       
                                            


THE FIRST NATIONAL BANK OF BOSTON

For Funding Requests:                       Other Notices:              
                                                                        
100 Federal Street, 01-09-06                100 Federal Street, 01-09-06
Boston, MA 02110                            Boston, MA 02110            
Attn:  Patricia Griffiths                   Attn:  Jan O'Donnell        
Telephone:  (617) 434-6388                  Telephone:  (617) 434-8890  
Telecopier:  (617) 434-6241                 Telecopier:  (617) 434-2309 
                                                                        
and Attn: Joan Baird                        
Telephone:  (617) 434-6388
Telecopier:  (617) 434-6241



THE CIT GROUP/BUSINESS CREDIT, INC.

For Funding Requests:                       Other Notices              
                                                                       
1211 Avenue of the Americas                 1211 Avenue of the Americas
New York, NY 10036                          New York, NY 10036         
Attn:  Steve Spranger                       Attn:  Nicole Cangelosi    
Telephone:  (212) 536-1291                  Telephone:  (212) 536-1284 
Telecopier: (212) 536-1329                  Telecopier: (212) 536-1295 
                                                                       
                                            and Attn:  James Conheeney 
                                            Telephone:  (212) 536-1265 
</TABLE>

                                     -124-

<pg$pcn>
<TABLE>
<CAPTION>
HELLER FINANCIAL, INC.
<S>                                         <C>
For Funding Requests:                       Other Notices:              
                                                                        
500 West Monroe                             101 Park Avenue, 10th Floor 
Chicago, 60661                              New York, NY 10178          
Attn:  Vicky Geist                          Attn:  Tara Hopkins         
Telephone:  (312) 441-7158                  Telephone:  (212) 880-2014  
Telecopier:  (312) 441-6199                 Telecopier:  (212) 880-7002 
                                                                        
                                            and Attn:  Tom Bukowski     
                                            Telephone:  (212) 880-7169  
                                            

BANK OF AMERICA BUSINESS CREDIT, INC.

For Funding Requests:                       Other Notices:              
                                                                        
231 S. LaSalle, 16th Floor                  231 S. LaSalle, 16th Floor  
Chicago, IL 60697                           Chicago, IL 60697           
                                                                        
Attn:  Melody Vaughan                       Attn:  Beverly Gray         
Telephone:  (312) 974-2443                  Telephone:  (312) 974-2418  
Telecopier:  (312) 974-8780                 Telecopier:  (312) 974-8760 
</TABLE>

                                      -125-

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                                                                  EXECUTION COPY


                                SIFTO CANADA INC.
                                       AND
                            ANY SUBSEQUENT BORROWER,
                                  as Borrowers


                      HARRIS CHEMICAL NORTH AMERICA, INC.,
                                  NAMSCO, INC.
                                       AND
                          NORTH AMERICAN SALT COMPANY,
                                  as Guarantors





                                  US$20,000,000
                                 MULTI-CURRENCY
                         CREDIT AND GUARANTEE AGREEMENT

                          dated as of October 15, 1993,
                 as amended and restated as of February 27, 1997



                      GENERAL ELECTRIC CAPITAL CANADA INC.,
                 as Collateral Agent and as Administrative Agent

<pg$pcn>
                                TABLE OF CONTENTS


<TABLE>
<CAPTION>
                                                                                Page
<S>                                                                             <C>
SECTION 1.  DEFINITIONS.........................................................  2
       1.1  Defined Terms.......................................................  2
       1.2  Other Definitional Provisions....................................... 34

SECTION 2.  AMOUNT AND TERMS OF REVOLVING CREDIT
               COMMITMENTS...................................................... 35
       2.1  Revolving Credit Commitments........................................ 35
       2.2  Revolving Credit Notes.............................................. 35
       2.3  Procedure for Revolving Credit Loan Borrowing....................... 36
       2.4  Use of Proceeds of Revolving Credit Loans........................... 37

SECTION 3.  [INTENTIONALLY OMITTED]............................................. 37

SECTION 4.  AMOUNT AND TERMS OF LETTER OF CREDIT SUB-
               FACILITY......................................................... 37
       4.1  Issuance............................................................ 37
       4.2  Advances Automatic; Participations.................................. 38
       4.3  Cash Collateral..................................................... 39
       4.4  Fees and Expenses................................................... 40
       4.5  Request for Incurrence of L/C Obligations........................... 40
       4.6  Obligations Absolute................................................ 41
       4.7  Nature of Lenders' Duties........................................... 42
       4.8  Application......................................................... 42

SECTION 5.  AMOUNT AND TERMS OF SWING LINE SUB-FACILITY......................... 43
       5.1  Swing Line Commitments.............................................. 43
       5.2  Swing Line Loan Note................................................ 43
       5.3  Procedure for Swing Line Loan Borrowing............................. 43
       5.4  Refunding of Swing Line Loans....................................... 44
       5.5  Unconditional Obligation to Refund Swing Line Loans................. 45
       5.6  Use of Proceeds of Swing Line Loans................................. 45

SECTION 6.  PROVISIONS RELATING TO CERTAIN EXTENSIONS OF
               CREDIT; FEES AND PAYMENTS........................................ 45
       6.1  Commitment Fee...................................................... 45
       6.2  Termination or Reduction of Commitments............................. 46
       6.3  Optional Prepayments................................................ 46
       6.4  Mandatory Prepayments............................................... 46
       6.5  [INTENTIONALLY OMITTED]............................................. 47
       6.6  Conversion and Continuation Options................................. 47
       6.7  Minimum Amounts of Tranches......................................... 49
       6.8  Interest Rates and Payment Dates.................................... 49
</TABLE>
                                     - i -

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<TABLE>
<CAPTION>
                                                                                Page
<S>                                                                             <C>
       6.9  Computation of Interest and Fees.................................... 50
       6.10  Inability to Determine Interest Rate............................... 51
       6.11  Pro Rata Treatment and Payments.................................... 52
       6.12  Illegality......................................................... 53
       6.13  Requirements of Law................................................ 53
       6.14  Taxes.............................................................. 54
       6.15  Replacement of Claimant............................................ 55
       6.16  Indemnity.......................................................... 56
       6.17  Repayment of Obligations........................................... 57

SECTION 7.  REPRESENTATIONS AND WARRANTIES...................................... 57
       7.1  Financial Condition................................................. 57
       7.2  No Change........................................................... 58
       7.3  Corporate Existence; Compliance with Law............................ 58
       7.4  Corporate Power; Authorization; Enforceable Obligations............. 58
       7.5  No Legal Bar........................................................ 59
       7.6  No Material Litigation.............................................. 59
       7.7  No Default.......................................................... 59
       7.8  Ownership of Property; Liens........................................ 59
       7.9  Intellectual Property............................................... 59
       7.10  No Burdensome Restrictions......................................... 60
       7.11  Taxes.............................................................. 60
       7.12  Federal Regulations................................................ 60
       7.13  ERISA.............................................................. 60
       7.14  Investment Company Act; Other Regulations.......................... 61
       7.15  Subsidiaries; Guarantors........................................... 61
       7.16  Environmental Matters.............................................. 61
       7.17  Solvency........................................................... 62
       7.18  Searles Valley Manufacturing Process............................... 62
       7.19  Canadian Pension Plans............................................. 63
       7.20  No Other Restriction............................................... 63

SECTION 8.  CONDITIONS PRECEDENT................................................ 64
       8.1  Conditions to Effectiveness......................................... 64
       8.2  Conditions to Each Extension of Credit.............................. 68

SECTION 9.  AFFIRMATIVE COVENANTS............................................... 69
       9.1  Financial Statements................................................ 69
       9.2  Certificates; Other Information..................................... 70
       9.3  Payment of Obligations.............................................. 72
       9.4  Conduct of Business and Maintenance of Existence.................... 72
       9.5  Maintenance of Property; Insurance.................................. 73
       9.6  Inspection of Property; Books and Records; Discussions.............. 73
       9.7  Notices............................................................. 73
       9.8  Environmental Laws.................................................. 74
</TABLE>


                                     - ii -

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<TABLE>
<CAPTION>
                                                                                Page
<S>                                                                             <C>
       9.9  Canadian Currency Risk.............................................. 75
       9.10    Inventory........................................................ 75
       9.11  Field Analyses..................................................... 75

SECTION 10.  NEGATIVE COVENANTS................................................. 75
       10.1  Financial Condition Covenants...................................... 75
       10.2  Limitation on Indebtedness......................................... 76
       10.3  Limitation on Liens................................................ 77
       10.4  Limitation on Guarantee Obligations................................ 79
       10.5  Limitation on Capital Expenditures................................. 80
       10.6  Limitation on Leases............................................... 81
       10.7  Limitation on Fundamental Changes.................................. 81
       10.8  Limitation on Sale of Assets....................................... 83
       10.9  Limitation on Restricted Payments.................................. 84
       10.10  Limitation on Investments, Loans and Advances..................... 86
       10.11  Limitation on Modifications of Debt Instruments and Other
               Agreements; Optional Payments of Debt Instruments................ 87
       10.12  Limitation on Transactions with Affiliates........................ 88
       10.13  Limitation on Changes in Fiscal Year.............................. 89
       10.14  Limitation on Negative Pledge Clauses............................. 89
       10.15  Limitation on Lines of Business................................... 89
       10.16  Payments in Respect of Accounts................................... 89
       10.17  Maintenance of Bank Accounts...................................... 89
       10.18  Restriction on Cash Balances...................................... 90
       10.19  Subsidiaries...................................................... 90
       10.20  Amendments to Charter and ByLaws.................................. 90
       10.21  Limitation on Dividend Restrictions............................... 90

SECTION 11.  GUARANTEES......................................................... 91
       11.1  Guarantees......................................................... 91
       11.2  No Subrogation, Contribution, Reimbursement or Indemnity........... 91
       11.3  Modification of Obligations........................................ 91
       11.4  Waiver............................................................. 92
       11.5  Reinstatement...................................................... 93
       11.6  Payment of Obligations............................................. 93

SECTION 12.  EVENTS OF DEFAULT.................................................. 93

SECTION 13.  THE ADMINISTRATIVE AGENT AND THE COLLATERAL
               AGENT............................................................ 97
       13.1  Appointment........................................................ 97
       13.2  Delegation of Duties............................................... 98
       13.3  Exculpatory Provisions............................................. 98
       13.4  Reliance by Administrative Agent and Collateral Agent.............. 99
       13.5  Notice of Default.................................................. 99
</TABLE>


                                     - iii -

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<TABLE>
<CAPTION>
                                                                                 Page
<S>          <C>                                                                 <C>
       13.6  Non-Reliance on Administrative Agent, Collateral Agent and Other
               Lenders.......................................................... 100
       13.7  Indemnification.................................................... 100
       13.8  Administrative Agent and Collateral Agent.......................... 101
       13.9  Successor Administrative Agent and Collateral Agent................ 101

SECTION 14.  MISCELLANEOUS...................................................... 101
       14.1  Amendments and Waivers............................................. 101
       14.2  Notices............................................................ 103
       14.3  No Waiver; Cumulative Remedies..................................... 104
       14.4  Survival of Representations and Warranties......................... 104
       14.5  Payment of Expenses and Taxes...................................... 104
       14.6  Successors and Assigns; Participations and Assignments............. 106
       14.7  Adjustments; Set-off............................................... 110
       14.8  Designation Under Senior Subordinated Notes........................ 110
       14.9  Judgment........................................................... 111
       14.10  Counterparts...................................................... 111
       14.11  Severability...................................................... 111
       14.12  Integration....................................................... 111
       14.13  Separate Obligations.............................................. 111
       14.14  Application of Proceeds of Collateral............................. 111
       14.15  GOVERNING LAW..................................................... 113
       14.16  Submission To Jurisdiction; Waivers............................... 113
       14.17  Acknowledgements.................................................. 114
       14.18  WAIVERS OF JURY TRIAL............................................. 114
       14.19  Confidentiality................................................... 114
</TABLE>


                                     - iv -

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SCHEDULES

Schedule I          Addresses for Notices
Schedule II         Commitments
Schedule III        Subsidiaries and Guarantors
Schedule IV         [INTENTIONALLY OMITTED]
Schedule V          Existing Indebtedness
Schedule VI         Existing Liens
Schedule VII        Existing Guarantee Obligations
Schedule VIII       Security Agreements
Schedule IX         Borrower's Accounts
Schedule X          Canadian Administrative Agent's Account

EXHIBITS

Exhibit A-1         Form of US Dollar Revolving Credit Note
Exhibit A-2         Form of Canadian Dollar Revolving Credit Note
Exhibit B-1         Form of US Dollar Swing Line Note
Exhibit B-2         Form of Canadian Dollar Swing Line Note
Exhibit D           Form of Affiliate Guarantee
Exhibit E           Form of Lock Box Agreement
Exhibit F           Form of Assignment and Acceptance
Exhibit G           Form of Joinder Agreement
Exhibit H-1         Form of Landlord's Letter
Exhibit H-2         Form of Warehousemen Letter
Exhibit J           Form of Borrowing Base Certificate
Exhibit K           [INTENTIONALLY OMITTED]
Exhibit L           Form of Stockholders' Agreement
Exhibit M           Form of Tax Sharing Agreement


                                      - v -

<pg$pcn>
                  MULTI-CURRENCY CREDIT AND GUARANTEE AGREEMENT, dated as of
October 15, 1993, as amended and restated as of February 27, 1997, among:

         (a)      SIFTO CANADA INC., a corporation incorporated and existing
                  under the laws of the Province of Ontario, Canada ("Sifto");

         (b)      any Subsequent Borrower (as hereinafter defined; collectively
                  with Sifto, the "Borrowers");

         (c)      HARRIS CHEMICAL NORTH AMERICA, INC., a Delaware corporation
                  ("HCNA"), NAMSCO, INC., a Delaware corporation ("NAMSCO"), and
                  NORTH AMERICAN SALT COMPANY, a Delaware corporation ("NASC"),
                  as guarantors;

         (d)      the several banks and other financial institutions from time
                  to time parties to this Agreement (the "Lenders"); and

         (e)      GENERAL ELECTRIC CAPITAL CANADA INC., a corporation
                  incorporated and organized under the laws of Canada ("GE
                  Capital Canada"), as collateral agent for the Lenders
                  hereunder (in such capacity, the "Collateral Agent") and as
                  administrative agent for the Lenders hereunder (in such
                  capacity, the "Administrative Agent").

                  WHEREAS, the Borrowers have entered into the Multi-Currency
Credit and Guarantee Agreement, dated as of October 15, 1993, as amended prior
to the date hereof (as so amended, the "Existing Credit Agreement") with
Barclays Bank of Canada and GE Capital Canada, as co-agents, GE Capital Canada,
as collateral agent, Bank of America Canada, as administrative agent, and the
several other banks and other financial institutions parties thereto;

                  WHEREAS, the parties hereto have agreed to amend and restate
the Existing Credit Agreement as provided herein on the terms set forth in this
Agreement, which Agreement shall become effective upon the satisfaction of
certain conditions precedent set forth herein; and

                  WHEREAS, it is the intent of the parties hereto that this
Agreement not constitute a novation of the obligations and liabilities existing
under the Existing Credit Agreement or evidence repayment of all or any of such
obligations and liabilities and that this Agreement amend and restate in its
entirety the Existing Credit Agreement and re-evidence the obligations of the
Borrowers outstanding thereunder;

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                  NOW, THEREFORE, in consideration of the above premises, the
parties hereto hereby agree that on the Closing Date (as defined below) the
Existing Credit Agreement shall be amended and restated to read in its entirety
as follows:

         SECTION 1.                 DEFINITIONS

                  1.1 Defined Terms. As used in this Agreement, the following
terms shall have the following meanings:

                  "Acceleration Date": as defined in Section 12.

                  "Accounts":  as defined in "Eligible Receivables".

                  "Adjusted Fixed Charges": for any period, with respect to HCNA
         and its Subsidiaries, the sum of (a) Capital Expenditures made during
         such period (other than Major Project Capital Expenditures, except to
         the extent the same are made with Transferred HCNA Amounts), provided
         that, for purposes of calculating "Adjusted Fixed Charges", the amount
         of Capital Expenditures actually incurred by HCNA and its Subsidiaries
         during HCNA's fiscal year 1997 shall be adjusted by (i) increasing such
         amount by US$3,000,000 in the first fiscal quarter, (ii) increasing
         such amount by US$2,000,000 in the second fiscal quarter, (iii)
         decreasing such amount by US$2,000,000 in the third fiscal quarter, and
         (iv) decreasing such amount by US$3,000,000 in the fourth fiscal
         quarter, and (b) the greater of scheduled and (without duplication of
         payments scheduled for prior periods) actual payments of principal of
         Indebtedness (other than Indebtedness hereunder and under the US Credit
         Agreement and other than any such scheduled or actual payments financed
         with the proceeds of (i) extraordinary asset sales, (ii) the issuance
         of Capital Stock, (iii) the issuance of Indebtedness having no
         scheduled amortization prior to the first anniversary of the incurrence
         thereof and a longer Weighted Average Life to Maturity than the
         Indebtedness being repaid or prepaid or (iv) the issuance of
         Indebtedness incurred in accordance with subsection 10.2(g) in order to
         refinance Indebtedness of NACC with respect to North American
         Terminals, Inc.'s San Diego terminal in a principal amount not
         exceeding US$8,000,000), determined on a consolidated basis in
         accordance with GAAP, for such period.

                  "Adjusted Operating Income": for any period, consolidated
         income before taxes on or measured by net income or gain (as determined
         in accordance with GAAP) for such period:

         (a)      minus, to the extent included in the computation of
                  consolidated income before taxes for such period, the sum of
                  (i) all extraordinary gains of HCNA and its Subsidiaries
                  recorded during such period (as determined


                                      -2-

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                  for HCNA and its Subsidiaries on a consolidated basis in
                  accordance with GAAP) and (ii) all non-cash foreign exchange
                  gains of HCNA and its Subsidiaries recorded during such period
                  (as determined for HCNA and its Subsidiaries on a consolidated
                  basis in accordance with GAAP);

         (b)      minus, to the extent not deducted in the computation of
                  consolidated income before taxes for such period, all taxes on
                  or measured by income (including, without limitation,
                  withholding taxes) paid in cash by HCNA and its
                  Subsidiaries with respect to such period or payable in cash by
                  HCNA and its Subsidiaries within twelve months following the
                  last day of such period with respect thereto;

         (c)      minus, capitalized interest in respect of capital expenditures
                  for such period;

         (d)      plus, to the extent not included in the calculation of
                  consolidated income before taxes, all tax refunds actually
                  received in cash by HCNA and its Subsidiaries during such
                  period (whether or not deducted in such period); and

         (e)      plus, to the extent deducted in the calculation of
                  consolidated income before taxes for such period, the sum of
                  (i) all extraordinary losses of HCNA and its Subsidiaries
                  recorded during such period (as determined for HCNA and its
                  Subsidiaries on a consolidated basis in accordance with GAAP),
                  (ii) depreciation and amortization (including, without
                  limitation, amortization of capitalized financing fees
                  included in interest expense calculated in accordance with
                  GAAP) of HCNA and its Subsidiaries during such period, (iii)
                  all non- cash foreign exchange losses of HCNA and its
                  Subsidiaries recorded during such period (as determined for
                  HCNA and its Subsidiaries on a consolidated basis in
                  accordance with GAAP), (iv) any non-cash interest related to
                  the amortization of the ECMC Transaction and (v) without
                  duplication of any of the foregoing, any other non-cash
                  charges against income.

                  "Administrative Agent":  as defined in the preamble.

                  "Affiliate": as to any Person, (a) any other Person (other
         than a Subsidiary) which, directly or indirectly, is in control of, is
         controlled by, or is under common control with, such Person or (b) any
         other Person (other than a Subsidiary) which is the vehicle for a joint
         venture in which such Person holds Capital Stock (or any Subsidiary of
         such joint venture vehicle). For purposes of this definition, "control"
         of a Person means the power, directly or indirectly, either to (x) vote
         10% or more of the Voting


                                      -3-

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         Stock of such Person or (y) direct or cause the direction of the
         management and policies of such Person, whether by contract or
         otherwise; provided, however, that in no event shall any of Chase
         Manhattan Capital Corporation, The Prudential Insurance Company of
         America or Prudential Reinsurance Company be deemed to be Affiliates of
         HCNA and its Subsidiaries with respect to any transaction occurring in
         the ordinary course of business of HCNA and its Subsidiaries.

                  "Affiliate Guarantee": the Guarantee executed and delivered by
         certain Affiliates of Sifto, substantially in the form of Exhibit D, as
         the same may be amended, restated, supplemented or otherwise modified
         from time to time.

                  "Aggregate Canadian Borrowing Base Availability": at any time,
         the sum of each Borrowing Base then in effect with respect to each
         Borrower.

                  "Aggregate Commitment": US$20,000,000 (or the Equivalent
         Amount thereof), as such amount may be reduced from time to time in
         accordance with this Agreement, provided that for the purposes of (i)
         the definition of "Aggregate Required Lenders" and (ii) the definition
         of "Commitment Percentage" when such definition is used in the
         definition of "Majority Lenders" or "Required Lenders", "Aggregate
         Commitment" shall mean the aggregate amount of the Commitments of all
         Lenders other than Non-Responding Lenders.

                  "Aggregate Outstanding Extensions of Credit": as to any Lender
         with respect to a Borrower at any time, an amount equal to the sum of
         (a) the aggregate principal amount of all then outstanding Revolving
         Credit Loans made by such Lender to such Borrower and (b) such Lender's
         Commitment Percentage of the aggregate amount of L/C Obligations and
         Swing Line Loans then outstanding to such Borrower; provided that, only
         for purposes of calculating the commitment fees owing pursuant to
         subsection , the aggregate amount of Swing Line Loans then outstanding
         shall be deemed to be held entirely by the Swing Line Lender and not by
         any other Lender. For the purpose of calculating the Aggregate
         Outstanding Extensions of Credit at any date, all amounts then
         outstanding shall be deemed to be denominated in US Dollars, with
         outstanding amounts which actually are denominated in Canadian Dollars
         being deemed to be converted into the Equivalent Amount of US Dollars.

                  "Aggregate Required Lenders": at any time, Lenders hereunder
         and Lenders under (and as defined in) the US Credit Agreement which, in
         the aggregate, have Commitments hereunder and Commitments thereunder
         (as defined in the US Credit Agreement) aggregating at least 66-2/3% of
         the sum of 


                                      -4-

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         the Aggregate Commitment hereunder and the Aggregate Commitment
         thereunder (and as defined therein).

                  "Agreement": this Multi-Currency Credit and Guarantee
         Agreement, as amended, restated, supplemented or otherwise modified
         from time to time.

                  "Application": an application, in such form as the relevant
         L/C Issuer may specify from time to time, requesting such L/C Issuer to
         open a Letter of Credit.

                  "Assignee":  as defined in subsection .

                  "Assignment and Acceptance" as defined in subsection 14.6(c).

                  "Available Commitment": as to any Lender, at any time, an
         amount equal to the excess, if any, of (a) such Lender's Commitment
         over (b) such Lender's Aggregate Outstanding Extensions of Credit to
         all Borrowers.

                  "BA Loan Rate": in respect of any Interest Period applicable
         to a BA Rate Loan, the rate per annum determined by the Administrative
         Agent by reference to the average rate quoted on the Reuters Monitor
         Screen (Page CDOR, or such other Page as may replace such Page on such
         Screen for the purpose of displaying Canadian interbank bid rates for
         Canadian Dollar bankers' acceptances) applicable to Canadian Dollar
         bankers' acceptances with a term comparable to such Interest Period as
         of 10:00 A.M., Toronto time, one Business Day before the first day of
         such Interest Period. If for any reason the Reuters Monitor Screen
         rates are unavailable, the "BA Loan Rate" shall mean the rate of
         interest determined by the Administrative Agent which is equal to the
         highest rate quoted by any of the five largest banks (determined on the
         basis of assets) named in Schedule I of the Bank Act (Canada) in
         respect of Canadian Dollar bankers' acceptances with a term comparable
         to such Interest Period as of 10:00 A.M., Toronto time, one Business
         Day before the first day of such Interest Period.

                  "Bank Act (Canada)": the Bank Act (Canada), as amended from
         time to time.

                  "Bank Act Security": security granted by the Borrowers
         pursuant to Sections 426 and 427 of the Bank Act (Canada).

                  "Bank of America":  Bank of America Canada

                  "Bankruptcy and Insolvency Act (Canada)": the Bankruptcy and
         Insolvency Act (Canada), as amended from time to time.


                                      -5-

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                  "BA Rate Loan": a loan denominated in Canadian Dollars which
         bears interest at a rate based on the BA Loan Rate.

                  "Base Rate Loans": Canadian Prime Rate Loans or US Base Rate
         Loans, as the context shall require.

                  "Borrowers": as defined in the preamble to this Agreement;
         each, a "Borrower".

                  "Borrowing Base": with respect to any Borrower at any date,
         the amount equal to the sum of (a) 85% of Eligible Receivables of such
         Borrower and (b) 50% of Eligible Inventory of such Borrower (provided
         that during the period from July 1 of each year to January 31 of the
         next succeeding year, the Borrowing Base with respect to each Borrower
         shall be the sum of (a) 85% of Eligible Receivables of such Borrower
         and (b) 65% of Eligible Inventory (with respect to salt products and
         other equivalent use products) of such Borrower). The Borrowing Base
         shall be determined from time to time by the Collateral Agent by
         reference to the Borrowing Base Certificate then most recently
         delivered to it; provided that the information contained in such
         Borrowing Base Certificate shall not be conclusive in calculating the
         Borrowing Base and, after consultation with the relevant Borrower (and,
         in the case of any change in the method of calculating the Borrowing
         Base, upon reasonable notice to the relevant Borrower), the Collateral
         Agent shall be entitled to adjust (in accordance with the standards set
         forth in the definitions of the terms "Eligible Inventory" and
         "Eligible Receivables") the amounts and other information contained
         therein to the extent that the Collateral Agent believes in its
         reasonable credit judgment that such adjustment is appropriate to
         reflect the then-current amounts of Eligible Inventory and Eligible
         Receivables. Notwithstanding anything to the contrary contained herein,
         the Borrowing Base at any date shall be reduced by the amount of
         Preferred Claims (other than Preferred Claims constituting Preferred
         Sales Tax Claims or Preferred Withholding Tax Claims) outstanding on
         such date.

                  "Borrowing Base Certificate": with respect to each Borrower, a
         certificate, substantially in the form of Exhibit J, delivered pursuant
         to subsection .

                  "Borrowing Date": any Business Day specified as a date on
         which a Borrower requests the Lenders to make Loans hereunder.

                  "Business":  as defined in subsection (ii).

                  "Business Day": a day other than a Saturday, Sunday or other
         day on which commercial banks in Toronto (or, in the case of matters
         relating to Eurodollar Loans, Toronto or London, England) are
         authorized or required by law to close.


                                      -6-

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                  "Canadian Administrative Agent's Account": the account
         specified on Schedule X, or such other account as shall be specified by
         the Administrative Agent in a written notice to the Borrowers and the
         Lenders.

                  "Canadian Dollars" and "C$": dollars in lawful currency of
         Canada.

                  "Canadian Pension Plan": any plan, program, arrangement or
         understanding that is a pension plan for the purposes of any applicable
         pension benefits or tax laws of Canada or a province or territory
         thereof (whether or not registered under any such laws) which is
         maintained, administered or contributed to by (or to which there is or
         may be an obligation to contribute by) any member of the Sifto Group in
         respect to any person's employment in Canada or a province or territory
         thereof with any member of the Sifto Group, all related funding
         agreements and all related agreements, arrangements and understandings
         in respect of, or related to, any benefits to be provided thereunder or
         the effect thereof on any other compensation or remuneration of any
         employee.

                  "Canadian Prime Rate": at any date, the greater on such date
         of (i) the highest annual rate of interest announced from time to time
         by any of Royal Bank of Canada, The Toronto-Dominion Bank and Canadian
         Imperial Bank of Commerce, as being its reference rate then in effect
         for determining interest rates on Canadian Dollar denominated
         commercial loans made by such bank in Canada (that is, its "prime
         rate"), regardless of whether any of such banks charges such rate of
         interest in connection with extensions of credit in Canadian Dollars
         and (ii) 0.75% above the BA Loan Rate which the Administrative Agent
         would quote on such date for BA Rate Loans having an Interest Period of
         30 days.

                  "Canadian Prime Rate Loans": Loans denominated in Canadian
         Dollars which bear interest at a rate based upon the Canadian Prime
         Rate.

                  "Capital Expenditures": of any Person, expenditures by such
         Person in respect of the purchase or other acquisition of fixed or
         capital assets having a useful life of greater than one year (excluding
         (a) any such asset acquired in connection with normal replacement and
         maintenance programs properly charged to current operations as an
         expense deducted in determining Consolidated Net Income, (b) payments
         on account of Financing Leases, (c) to the extent otherwise included
         therein, interest capitalized during such period in accordance with
         GAAP, (d) expenditures of proceeds of insurance, condemnation awards or
         indemnity payments to the extent that such proceeds are expended or
         committed to be expended within 270 days after receipt thereof, or in


                                      -7-

<pg$pcn>
         respect of which expenditures were previously made, for equipment,
         fixed assets, real property or improvements, or for replacements or
         substitutions therefor or additions thereto, in each case as certified
         in reasonable detail to the Administrative Agent by a Responsible
         Officer of HCNA (it being agreed that (x) to the extent such proceeds
         are not expended or committed to be expended within 270 days after
         receipt thereof in accordance with this clause (d) or (y) proceeds are
         not received with respect to expenditures previously made and not
         included in the calculation of "Capital Expenditures" in anticipation
         of receiving such proceeds within 270 days of the initial expenditure,
         in each case, such amount shall be included in the calculation of
         "Capital Expenditures" thereafter) and (e) capital expenditures to the
         extent funded by any investor in any of HCNA's Subsidiaries that is not
         an Affiliate or Subsidiary of HCNA), which would, in accordance with
         GAAP, be set forth as capital expenditures on a consolidated statement
         of cash flows of such Person, including, in any event, investments by
         HCNA and its Subsidiaries in excess of US$10,000,000 (or the Equivalent
         Amount thereof), in the aggregate, made subsequent to December 28, 1996
         by such Person in joint ventures in which HCNA or any of its
         Subsidiaries holds Capital Stock pursuant to subsection 10.10(d). For
         the purposes of clause (d) of this definition, proceeds shall be deemed
         to be committed to be expended only to the extent that a written
         contract or a firm purchase order has been executed and delivered
         requiring expenditure of such proceeds.

                  "Capital Stock": any and all shares, interests, participations
         or other equivalents (however designated) of capital stock of a
         corporation, any and all equivalent ownership interests in a Person
         (other than a corporation) and any and all warrants or options to
         purchase any of the foregoing.

                  "Cash Collateral Account":  as defined in Section 4.3(a).

                  "Cash Equivalents": (a) with respect to HCNA and its
         Subsidiaries (including, without limitation, the members of the Sifto
         Group), (i) securities issued or directly and fully guaranteed or
         insured by the United States Government or any agency or
         instrumentality thereof having maturities of not more than twelve
         months from the date of acquisition, (ii) time deposits and
         certificates of deposit having maturities of not more than six months
         from the date of acquisition of the Administrative Agent or any
         commercial bank having capital and surplus in excess of US$500,000,000
         (or the Equivalent Amount thereof) which has, or the holding company of
         which has, a commercial paper rating meeting the requirements specified
         in clause (iv) below, (iii) repurchase obligations with a term of not
         more than seven


                                      -8-

<pg$pcn>
         days for underlying securities of the types described in clause (i),
         entered into with any bank meeting the qualifications specified in
         clause (ii) above, and (iv) commercial paper rated at least A-1 or the
         equivalent thereof by Standard & Poor's Ratings Services or P-1 or the
         equivalent thereof by Moody's Investors Service, Inc. and in either
         case maturing within three months after the date of acquisition; and

                  (b) with respect to members of the Sifto Group, (i) securities
         issued or directly and fully guaranteed or insured by the Canadian
         Government or any agency or instrumentality thereof having maturities
         of not more than twelve months from the date of acquisition and (ii)
         commercial paper rated at least R1 (high), R1 (middle) or R1 (low) or
         the equivalent by Dominion Bond Rating Service Limited or A1+ or the
         equivalent by CBRS Inc. and in either case maturing within three months
         after the date of acquisition.

                  "Closing Date": the date (which date shall be prior to or on
         February 28, 1997) on which the conditions precedent set forth in
         subsection shall be satisfied.

                  "Code": the Internal Revenue Code of 1986 of the United
         States, as amended from time to time.

                  "Collateral": all assets of the Loan Parties, now owned or
         hereinafter acquired, upon which a Lien is purported to be created by
         any Security Document.

                  "Collateral Agent":  as defined in the preamble.

                  "Collateral Covenant Agreement": the Collateral Covenant
         Agreement, dated as of the Original Closing Date, as amended as of the
         Closing Date, by and among Sifto and the Collateral Agent, as the same
         may be further amended, supplemented or otherwise modified from time to
         time.

                  "Collateral Cash Equivalents": any cash equivalents held in a
         Cash Collateral Account.

                 "Commercial Letter of Credit":  as defined in subsection 4.1
         (b).

                  "Commitment": as to any Lender, the obligation of such Lender
         to make Revolving Credit Loans to and/or issue or participate in
         Letters of Credit, as the case may be, issued on behalf of the
         Borrowers hereunder in an aggregate principal and/or face amount at any
         one time outstanding not to exceed the amount set forth opposite such
         Lender's name on Schedule II; as to all Lenders collectively, the
         "Commitments".


                                      -9-

<pg$pcn>
                  "Commitment Percentage": as to any Lender at any time, the
         percentage which such Lender's Commitment then constitutes of the
         Aggregate Commitment; provided that, at any time after the Commitments
         shall have expired or terminated, the Commitment Percentage of a Lender
         instead shall be the percentage which the Aggregate Outstanding
         Extensions of Credit of such Lender to all Borrowers constitutes of the
         Aggregate Outstanding Extensions of Credit of all Lenders to all
         Borrowers.

                  "Commitment Period": the period from and including the Closing
         Date to but not including the Termination Date or such earlier date on
         which the Commitments shall terminate as provided herein.

                  "Commonly Controlled Entity": an entity, whether or not
         incorporated, which is under common control with a Borrower within the
         meaning of Section 4001 of ERISA or is part of a group which includes a
         Borrower and which is treated as a single employer under Section 414 of
         the Code.

                  "Consolidated EBITDA": for any period, with respect to HCNA
         and its Subsidiaries on a consolidated basis, an amount equal to
         consolidated income before taxes on or measured by net income or gain
         (as determined in accordance with GAAP) for such period:

                  (a)      minus, to the extent included in the computation of
                           consolidated income before taxes, interest income,
                           income or gain from extraordinary items for such
                           period and non-cash foreign exchange gains, all
                           determined on a consolidated basis for HCNA and its
                           Subsidiaries in accordance with GAAP; and

                  (b)      plus, to the extent deducted in the computation of
                           consolidated income before taxes, the sum of (i)
                           Consolidated Interest Expense (including, without
                           limitation, interest expense imputed in respect of
                           any Financing Leases), (ii) expense or loss from
                           extraordinary items for such period, (iii)
                           depreciation and other non-cash charges against
                           income for such period, (iv) amortized debt discount
                           for such period and (v) non-cash foreign exchange
                           losses, all determined on a consolidated basis for
                           HCNA and its Subsidiaries in accordance with GAAP.

                  "Consolidated Free Cash Flow": for any period, Consolidated
         Net Income (a) plus (to the extent deducted in determining Consolidated
         Net Income) the sum of (i) depreciation and other non-cash charges
         against income for such period and (ii) the provision for income taxes
         for such period, and (b) minus the sum of (i) the amount of Permitted


                                      -10-

<pg$pcn>
         Capital Expenditures (other than Major Project Capital Expenditures)
         actually made during such period, (ii) income taxes paid or payable in
         cash for such period and (iii) scheduled principal payments paid or
         payable on a consolidated basis with respect to such period on account
         of Indebtedness.

                  "Consolidated Funded Debt": at any date, the amount of all
         Indebtedness for borrowed money of HCNA and its Subsidiaries,
         determined on a consolidated basis in accordance with GAAP.

                  "Consolidated Interest Expense": for any period, interest
         expense of HCNA and its Subsidiaries for such period (excluding the
         effects of capitalizing interest with respect to capital expenditures,
         any amortization of capitalized finance fees and any non-cash interest
         related to the amortization of the ECMC Transaction), determined on a
         consolidated basis in accordance with GAAP.

                  "Consolidated Lease Expense": for any period, the aggregate
         rental obligations of HCNA and its Subsidiaries taken as a whole
         (determined on a consolidated basis in accordance with GAAP) which are
         payable in respect of such period under leases of real and/or personal
         property (net of income from subleases thereof, but including taxes,
         insurance, maintenance and similar expenses which the lessee is
         obligated to pay under the terms of said leases), whether or not such
         obligations are reflected as liabilities or commitments on a
         consolidated balance sheet of HCNA and its Subsidiaries or in the notes
         thereto, excluding, however, obligations under Financing Leases.

                  "Consolidated Net Income": for any period, the consolidated
         net income (or deficit) of HCNA and its Subsidiaries taken as a whole,
         determined in accordance with GAAP; provided that there shall be
         excluded (a) the income (or deficit) of any Person accrued prior to the
         date it becomes a Subsidiary or is merged into or consolidated with
         HCNA or any Subsidiary, (b) the income (or deficit) of any Person
         (other than a Subsidiary) in which HCNA or any Subsidiary has an
         ownership interest, except to the extent that any such income has been
         actually received by HCNA or such Subsidiary in the form of dividends
         or similar distributions, (c) the undistributed earnings of any
         Subsidiary to the extent that the declaration or payment of dividends
         or similar distributions by such Subsidiary is not at the time
         permitted by the terms of any Contractual Obligation or Requirement of
         Law applicable to such Subsidiary, (d) any restoration to income of any
         contingency reserve, except to the extent that provision for such
         reserve was made out of income accrued during such period, (e) any
         aggregate net gain (but not any aggregate net loss) during such period
         arising from the sale, exchange or other 


                                      -11-

<pg$pcn>
         disposition of capital assets (such term to include all fixed assets,
         whether tangible or intangible, all inventory sold in conjunction with
         the disposition of fixed assets and all securities), (f) any write-up
         of any asset, (g) any net gain from the collection of the proceeds of
         life insurance policies, (h) any net gain arising from the acquisition
         of any securities, or the extinguishment, under GAAP, of any
         Indebtedness of HCNA or any Subsidiary, (i) in the case of a successor
         to HCNA by consolidation or merger or as a transferee of its assets,
         any earnings of the successor corporation prior to such consolidation,
         merger or transfer of assets, and (j) any deferred credit representing
         the excess of equity in any Subsidiary at the date of acquisition over
         the cost of the investment in such Subsidiary.

                  "Contractual Obligation": as to any Person, any provision of
         any security issued by such Person or of any agreement, instrument or
         other undertaking to which such Person is a party or by which it or any
         of its property is bound.

                  "Debt Purchase Conditions": at any date with respect to any
         purchase of Senior Secured Notes or Sifto Notes in reliance upon the
         provisions of subsection 10.11(c), the simultaneous satisfaction of
         each of the following conditions:

                           (a) no Default or Event of Default shall have
                  occurred and be continuing or would result therefrom;

                           (b) HCNA would have been in compliance with the Fixed
                  Charge Coverage Ratio required pursuant to subsection 10.1(b)
                  for the period of four consecutive fiscal quarters ending on
                  the last day of the most recent fiscal period with respect to
                  which HCNA shall have delivered financial statements pursuant
                  to subsection 9.1(a) or 9.1(b) if such purchase had been
                  consummated on the last day of such fiscal period;

                           (c) the amount equal to (i) the average daily
                  aggregate Borrowing Bases of all Borrowers hereunder plus (ii)
                  the average daily aggregate Borrowing Bases of all Borrowers
                  under (and as such terms are defined in) the US Credit
                  Agreement during the period of 90 consecutive days immediately
                  preceding the date of such purchase shall have exceeded by at
                  least US$40,000,000 (or the Equivalent Amount thereof) the
                  amount equal to (x) the average daily Aggregate Outstanding
                  Extensions of Credit to all Borrowers from all Lenders
                  hereunder plus (y) the average daily Aggregate Outstanding
                  Extensions of Credit to all Borrowers from all Lenders under
                  (and as such terms are defined in) the US Credit Agreement
                  during such 90-day period; and


                                      -12-

<pg$pcn>
                           (d) there were no outstanding Loans hereunder and no
                  outstanding Loans under (and as such terms are defined in) the
                  US Credit Agreement immediately prior to and immediately
                  following such purchase.

                  "Default": any of the events specified in Section , whether or
         not any requirement for the giving of notice, the lapse of time, or
         both, or any other condition, has been satisfied.

                  "ECMC Transaction": the amendment of that certain Emission
         Control Maintenance and Construction Agreement, dated as of December
         15, 1988, by and between Kerr-McGee Chemical Corporation and ACE
         Cogeneration Company, as assigned to NACC pursuant to that certain
         Master Agreement, dated November 30, 1990, and as the same has been
         amended from time to time, providing, among other things, for the
         payment by ACE Cogeneration Company of not less than US$22,000,000 in
         1996.

                  "Eligible Inventory": shall mean, with respect to the relevant
         Borrower, an amount equal to the book value of that inventory
         ("Inventory") of such Borrower, determined in accordance with GAAP
         consistently applied, valued on a weighted average cost basis as to
         each Borrower, excluding in each instance capitalized warehouse costs,
         and subject to internal control and management procedures applied in
         accordance with past practice, which conforms to the following
         additional criteria:

                           (a) the Inventory consists of items which are in good
                  saleable condition (taking into account all applicable
                  regulatory standards) and are not deteriorating in quality or
                  obsolete;

                           (b) the Inventory is located at a facility owned or
                  leased by a Borrower, or if the Inventory is stored at any
                  location other than premises owned or leased by such Borrower,
                  such Borrower has complied with all notice, reporting and
                  filing requirements required by the relevant Security
                  Documents, as the case may be, with respect to such Inventory
                  to assure that the Collateral Agent has a perfected security
                  interest in and access to such Inventory; provided that
                  Inventory which is located at any location which is not owned
                  by such Borrower shall be deemed to be Eligible Inventory only
                  if either (i) a Landlord's Waiver has been obtained with
                  respect to such location and remains in full force and effect
                  or (ii) the Borrowing Base for such Borrower has been reduced
                  by a reserve reasonably satisfactory to the Collateral Agent
                  to provide for future obligations of the Borrower which will
                  need to be satisfied in order to remove such Inventory from


                                      -13-

<pg$pcn>
                  such location in an orderly manner over a reasonable
                  period of time;

                           (c) the location at which such Inventory is stored
                  holds Inventory which, in the absence of the provisions of
                  this clause (c), would constitute Eligible Inventory having an
                  aggregate book value of not less than C$60,000 (or the
                  Equivalent Amount thereof;

                           (d) the Inventory is subject to the Collateral
                  Agent's perfected security interest (or the equivalent thereof
                  under applicable law) and no other Lien (other than Liens
                  permitted under the Security Agreements to which such Borrower
                  is a party) (other than any Preferred Claims, the existence of
                  which shall not, in itself, cause Inventory which is subject
                  thereto to cease to be Eligible Inventory) and is either (i)
                  stored in Canada at a location covered by a currently
                  effective Personal Property Security Act filing (for any
                  province in which such legislation applies or by other
                  applicable method of perfecting a security interest (or the
                  equivalent thereof) in Canadian provinces not subject to the
                  Personal Property Security Act) filed by the Collateral Agent
                  for the benefit of the holders of the Obligations or (ii)
                  stored in the United States, at a location covered by a
                  currently effective Uniform Commercial Code filing or other
                  evidence of the Collateral Agent's security interest, for the
                  benefit of the holders of the Obligations, and the Collateral
                  Agent and the Administrative Agent reasonably believe that
                  such financing statement or other evidence of security
                  interest results in a perfected security interest;

                           (e) the Inventory consists of goods at a location
                  with respect to which the relevant Borrower maintains adequate
                  perpetual or periodic records in accordance with past practice
                  and, except to the extent incorporated into the finished
                  product, does not consist of work in process (including,
                  without limitation, bags and minerals), minerals which have
                  not been removed from mines or lakes, returned or rejected
                  goods, goods being returned to suppliers, spare parts,
                  maintenance items, packaging materials, shipping materials,
                  supplies or pallets;

                           (f) the Inventory consists of Inventory in transit
                  which is covered by non-negotiable documents of title which
                  expressly state that such documents are "Non-Negotiable", but
                  only to the extent that (i) such Inventory is in transit from
                  (A) a location within a Canadian province which is owned or
                  leased by the relevant Borrower or any of its Subsidiaries
                  (including                                                    


                                      -14-

<pg$pcn>
                  a Public Warehouse as to which the Collateral Agent has
                  received a Warehousemen Notice) and with respect to which the
                  Collateral Agent holds a perfected security interest (or the
                  applicable equivalent thereof) to (B) a location within a
                  Canadian province which is owned or leased by the relevant
                  Borrower or any of its Subsidiaries (including a Public
                  Warehouse as to which the Collateral Agent has received a
                  Warehousemen Notice) and with respect to which the Collateral
                  Agent holds a perfected security interest (or the applicable
                  equivalent thereof), (ii) such Inventory does not have a book
                  value in excess of US$5,000,000 and (iii) such Inventory which
                  is located at any location which is not owned by such Borrower
                  shall be deemed to be Eligible Inventory only if either (A) a
                  Landlord's Waiver has been obtained with respect to such
                  location and remains in full force and effect or (B) the
                  Borrowing Base for such Borrower has been reduced by a reserve
                  reasonably satisfactory to the Collateral Agent to provide for
                  future obligations of the Borrower which will need to be
                  satisfied in order to remove such Inventory from such location
                  in an orderly manner over a reasonable period of time;

                           (g) the Inventory is not covered by a negotiable
                  document of title;

                           (h)  the Inventory is not placed on consignment;

                           (i) if any of the Inventory consists of special order
                  goods or bill and hold goods, reasonable reserves have been
                  deducted in respect of such Inventory in determining the
                  Borrowing Base;

                           (j) the Inventory is not prepaid and is insured in
                  accordance with the requirements of the Loan Documents; and

                           (k) the Inventory is otherwise satisfactory to the
                  Collateral Agent in its reasonable credit judgment.

         Notwithstanding anything to the contrary in this Agreement, the amount
         of Eligible Inventory of each Borrower shall be reduced by the amount
         of such Borrower's Preferred Withholding Tax Claims.

                  "Eligible Receivables": shall mean, with respect to the
         relevant Borrower, an amount equal to the book value of those accounts
         receivable ("Accounts") of such Borrower, determined in accordance with
         GAAP consistently applied and subject to internal control and
         management procedures applied in accordance with past practice, which
         conform to each of the following additional criteria:


                                      -15-

<pg$pcn>
                           (a) the Account is not evidenced by chattel paper or
                  an instrument or security of any kind, unless such chattel
                  paper or instrument or security has been duly endorsed to and
                  is in the possession of the Collateral Agent for the benefit
                  of the holders of the Obligations;

                           (b) if the chief executive office of the account
                  debtor is located outside Canada, either:

                                    (i) the chief executive office of the
                           account debtor is located in the United States and
                           the Collateral Agent then holds a first priority
                           security interest in the Account and such security
                           interest is perfected under the laws of both the
                           United States and Canada;

                                    (ii) the Account is payable in the full
                           amount of the face value of the Account in Canadian
                           Dollars or US Dollars and is supported by an
                           irrevocable letter of credit issued by a Canadian
                           financial institution (or a foreign financial
                           institution confirmed by a Canadian financial
                           institution) reasonably satisfactory to the
                           Collateral Agent and in form and substance reasonably
                           acceptable to the Collateral Agent and the letter of
                           credit and all documents required to draw thereon
                           have been delivered to (and the rights of the
                           relevant Borrower therein have been assigned to) the
                           Collateral Agent for the benefit of the holders of
                           the Obligations; or

                           (c) the Account is subject to the Collateral Agent's
                  perfected security interest (or the equivalent thereof under
                  applicable law) and no other Lien (other than (i) any
                  Preferred Claims, the existence of which shall not, in itself,
                  cause Accounts which are subject thereto to cease to be
                  Eligible Receivables and (ii) Liens permitted under the
                  Security Agreements to which such Borrower is party), and any
                  filings necessary or reasonably desirable to have been filed
                  by the Collateral Agent against such Borrower in order to
                  perfect the security interest (or the applicable equivalent
                  thereof) of the Collateral Agent and where applicable, the
                  Administrative Agent and the Lenders in such Account during
                  such time as such Account shall be included in the Borrowing
                  Base;

                           (d) the Account arises solely from the sale of goods
                  or the performance of services by such Borrower in the
                  ordinary course of business and is documented by an invoice in
                  a customary form used by such Borrower and reasonably
                  acceptable to the Collateral Agent and (i) is due less than
                  ninety (90) days after the date of


                                      -16-

<pg$pcn>
                  such invoice or (ii) is covered by an irrevocable letter of
                  credit of a type described in clause (b) (ii) above;

                           (e) the Account has not remained unpaid later than
                  the earlier to occur of (i) sixty (60) days past the due date
                  specified in the applicable invoice and (ii) ninety (90) days
                  past the original invoice date;

                           (f) the account debtor is not insolvent or the
                  subject of any bankruptcy or insolvency proceeding of any kind
                  and the Collateral Agent has not notified such Borrower that
                  the creditworthiness of such account debtor is unacceptable to
                  the Collateral Agent in its reasonable business judgment;

                           (g) the Account does not arise out of transactions
                  with any employee, officer, director, stockholder or other
                  Affiliate of HCNA or any of its Subsidiaries;

                           (h) (i) in the case of Accounts due from an account
                  debtor (other than the Ministry of Transportation of Ontario,
                  the City of Montreal, the Ministry of Transport of Quebec and
                  the City of Hamilton) whose total indebtedness to all
                  Borrowers on Accounts then exceeds 10% of the aggregate amount
                  of all Eligible Receivables of all Borrowers, such Accounts
                  shall be deemed to be ineligible (with such ineligibility
                  being applied ratably to the Accounts owing to the Borrowers
                  from such account debtor) to the extent that they exceed such
                  percentage and (ii) in the case of Accounts due from the
                  Ministry of Transportation of Ontario, the City of Montreal,
                  the Ministry of Transport of Quebec and the City of Hamilton,
                  such Accounts shall be deemed to be ineligible (with such
                  ineligibility being applied ratably to the Accounts owing to
                  the Borrowers from such account debtors) to the extent that
                  the total indebtedness to all Borrowers on such Accounts then
                  exceeds 50% of the aggregate amount of all Eligible
                  Receivables of all Borrowers;

                           (i) the Account is not due from an account debtor
                  whose indebtedness to such Borrower on Accounts which are more
                  than 60 days past due (or in the case of Accounts owing from
                  account debtors located outside of Canada or the United
                  States, 30 days past due) exceeds 50% of such account debtor's
                  total indebtedness to such Borrower;

                           (j)  the Account is payable to such Borrower;


                                      -17-

<pg$pcn>
                           (k) the Account does not arise out of a bill and hold
                  sale prior to the shipment thereof and, if the Account arises
                  out of a sale to any Person to which such Borrower is indebted
                  (other than any Governmental Authority with respect to which
                  none of such indebtedness owing by such Borrower is then due
                  and payable), the amount of such indebtedness is deducted in
                  determining the Borrowing Base;

                           (l) the Account is net of any returns, discounts,
                  claims, credits and allowances and net of reserves with
                  respect to Accounts for rebates, billbacks, foreign exchange
                  losses, and net of all other reserves established by such
                  Borrower with respect to Accounts, other than bad debt
                  reserves;

                           (m) the Account is not subject to any defense,
                  counterclaim or setoff, other than with respect to taxes not
                  then due and payable to Governmental Authorities which are
                  account debtors;

                           (n) the Account does not arise with respect to goods
                  which are delivered on a cash-on-delivery basis or placed on
                  consignment, guaranteed sale or other terms by reason of which
                  the payment by the account debtor may be conditional;

                           (o) the Account is one upon which (i) such Borrower's
                  right to receive payment is absolute and is not contingent
                  upon the fulfillment of any condition whatsoever and (ii) such
                  Borrower is able to bring suit or otherwise enforce its
                  remedies against the account debtor through judicial process;
                  and

                           (p) the Account is otherwise satisfactory to the
                  Collateral Agent in its reasonable credit judgment.

         Notwithstanding anything to the contrary in this Agreement, the amount
         of Eligible Receivables of each Borrower shall be reduced by the amount
         of such Borrower's Preferred Sales Tax Claims.

                  "Environmental Compliance Program": as defined in subsection
                   9.2(f).

                  "Environmental Laws": any and all foreign (including, without
         limitation, United States), Federal, state, territorial, provincial,
         local or municipal laws, rules, orders, regulations, statutes,
         ordinances, codes, decrees, guidelines, requirements of any
         Governmental Authority or other Requirements of Law (including common
         law) regulating, relating to or imposing liability or standards of
         conduct concerning health and safety matters or conditions or
         protection of human health or the environment, including


                                      -18-

<pg$pcn>
         without limiting the generality of the foregoing, mining operations,
         rehabilitation, decommissioning and mine closures as are now or may at
         any time hereafter be in effect.

                  "Equivalent Amount":  at any date:

                           (a) with respect to obligations or valuations
                  denominated in Canadian Dollars, the amount of US Dollars
                  which would result from the conversion of the relevant amount
                  of Canadian Dollars into US Dollars at the bid rate for US
                  Dollars determined by the Administrative Agent in accordance
                  with its normal practice at approximately 12:00 Noon, Toronto
                  time, on the date which is most recent to occur of (i) the
                  last day of the first two weeks of each Interim Accounting
                  Period and (ii) the last day of each Interim Accounting Period
                  (or, at all times prior to the first of such dates to occur
                  following the Closing Date, the Business Day immediately
                  preceding the Closing Date); provided, however, that the
                  Equivalent Amount shall be calculated on a daily basis (by
                  reference to the conversion rate determined by the
                  Administrative Agent in accordance with normal practice at
                  approximately 12:00 Noon, Toronto time, on such date) for
                  purposes of determining (i) whether the Aggregate Outstanding
                  Extensions of Credit on such date are in excess of either the
                  Aggregate Commitment or the Borrowing Base then in effect and
                  (ii) the amounts due and payable under the Notes evidencing
                  the Canadian Prime Rate Loans; and

                           (b) with respect to obligations or valuations
                  denominated in U.S. Dollars, the amount of Canadian Dollars
                  which would result from the conversion of the relevant amount
                  of U.S. Dollars into Canadian Dollars at the bid rate for
                  Canadian Dollars determined by the Administrative Agent in
                  accordance with its normal practice at approximately 12:00
                  Noon, Toronto time, on the date which is most recent to occur
                  of (i) the last day of the first two weeks of each Interim
                  Accounting Period and (ii) the last day of each Interim
                  Accounting Period (or, at all times prior to the first of such
                  dates to occur following the Closing Date, the Business Day
                  immediately preceding the Closing Date); provided, however,
                  that the Equivalent Amount shall be calculated on a daily
                  basis (by reference to the conversion rate determined by the
                  Administrative Agent in accordance with normal practice at
                  approximately 12:00 Noon, Toronto time, on such date) for
                  purposes of determining whether the Aggregate Outstanding
                  Extensions of Credit on such date are in excess of either the
                  Aggregate Commitment or the Borrowing Base then in effect.


                                      -19-

<pg$pcn>
                  "ERISA": the Employee Retirement Income Security Act of 1974
         of the United States as amended from time to time.

                  "Eurocurrency Reserve Requirements": for any day as applied to
         a Eurodollar Loan, the aggregate (without duplication) of the rates
         (expressed as a decimal fraction) of reserve requirements in effect on
         such day (including, without limitation, basic, supplemental, marginal
         and emergency reserves under any regulations of the Board of Governors
         of the Federal Reserve System of the United States or of the Office of
         the Superintendent of Financial Institutions in Canada or other
         Governmental Authority having jurisdiction with respect thereto)
         dealing with reserve requirements prescribed for Eurocurrency funding
         (currently referred to as "Eurocurrency Liabilities" in Regulation D of
         such Board, with respect to the Federal Reserve System) maintained by a
         member bank of such System, provided that a Lender shall be deemed to
         be subject to Eurocurrency Reserve Requirements only from and after the
         date that such Lender has certified to the Borrowers that a
         Governmental Authority has imposed any Eurocurrency Reserve
         Requirements subsequent to the Closing Date which increase the cost to
         such Lender of making or maintaining Eurodollar Loans hereunder.

                  "Eurodollar Base Rate": with respect to each day during each
         Interest Period pertaining to a Eurodollar Loan, the rate of interest
         determined on the basis of the rate per annum for deposits in US
         Dollars for a period equal to such Interest Period commencing on the
         first day of such Interest Period appearing on Page 3750 of the
         Telerate Screen as of 11:00 A.M., London time, two Business Days prior
         to the beginning of such Interest Period; provided, that in the event
         that such rate does not appear on Page 3750 of the Telerate Screen (or
         otherwise on the Telerate Service), the Eurodollar Base Rate shall be
         determined by reference to such other publicly available service for
         displaying eurodollar rates as shall be determined by the
         Administrative Agent.

                  "Eurodollar Loans": Loans bearing interest at a rate which is
         based upon the Eurodollar Rate.

                  "Eurodollar Rate": with respect to each day during each
         Interest Period pertaining to a Eurodollar Loan, a rate per annum
         determined for such day in accordance with the following formula
         (rounded upward to the nearest 1/100th of 1%):

                              Eurodollar Base Rate
                    ----------------------------------------
                    1.00 - Eurocurrency Reserve Requirements

                  "Event of Default": any of the events specified in Section ,
         provided that any requirement for the giving of 


                                      -20-

<pg$pcn>
         notice, the lapse of time, or both, or any other condition, has been
         satisfied.

                  "Existing Credit Agreement":  as defined in the preamble.

                  "Financing Lease": any lease of property, real or personal,
         the obligations of the lessee in respect of which are required in
         accordance with GAAP to be capitalized on a balance sheet of the lessee
         or disclosed in a footnote thereto.

                  "Fixed Charge Coverage Ratio": for any Person for any period,
         the ratio of (i) Adjusted Operating Income plus, for purposes of
         subsection 10.1 only, in the case of any period which ends on or prior
         to the date which is twelve months after the Closing Date, the
         aggregate amount of amendment, upfront and other similar fees and
         legal, accounting and other fees and expenses payable in connection
         with the execution and delivery of this Agreement and the US Credit
         Agreement and the consummation of the transactions contemplated hereby
         or thereby to (ii) Adjusted Fixed Charges for such period.

                  "GAAP": generally accepted accounting principles in the United
         States of America in effect from time to time; provided that, to the
         extent that the Administrative Agent determines that a change in GAAP
         materially affects the calculation of any of the covenants contained in
         subsection , GAAP shall mean, solely with respect to the covenants so
         affected, generally accepted accounting principles consistent with
         those utilized in preparing the audited financial statements referred
         to in subsection 6.17, 7.1.

                  "GE Capital Canada": as defined in the preamble to this
         Agreement.

                  "Governmental Authority": any nation or government, any state
         or province or other political subdivision thereof and any entity
         exercising executive, legislative, judicial, regulatory or
         administrative functions of or pertaining to government.

                  "GSLMC ": Great Salt Lake Minerals Corporation, a Delaware
         corporation.

                  "Guarantee Obligation": as to any Person (the "guaranteeing
         person"), any obligation of (a) the guaranteeing person or (b) another
         Person (including, without limitation, any bank under any letter of
         credit) with respect to which the guaranteeing person has issued a
         reimbursement, counterindemnity or similar obligation, in any such case
         guaranteeing or in effect guaranteeing any Indebtedness, leases,
         dividends or other obligations (the


                                      -21-

<pg$pcn>
         "primary obligations") of any other third Person (the "primary
         obligor") in any manner, whether directly or indirectly, including,
         without limitation, any obligation of the guaranteeing person, whether
         or not contingent, (i) to purchase any such primary obligation or any
         property constituting direct or indirect security therefor, (ii) to
         advance or supply funds (1) for the purchase or payment of any such
         primary obligation or (2) to maintain working capital or equity capital
         of the primary obligor or otherwise to maintain the net worth or
         solvency of the primary obligor, (iii) to purchase property, securities
         or services primarily for the purpose of assuring the owner of any such
         primary obligation of the ability of the primary obligor to make
         payment of such primary obligation or (iv) otherwise to assure or hold
         harmless the owner of any such primary obligation against loss in
         respect thereof; provided, however, that the term Guarantee Obligation
         shall not include endorsements of instruments for deposit or collection
         in the ordinary course of business. The amount of any Guarantee
         Obligation of any guaranteeing person shall be deemed to be the lower
         of (a) an amount equal to the stated or determinable amount of the
         primary obligation in respect of which such Guarantee Obligation is
         made and (b) the maximum amount for which such guaranteeing person may
         be liable pursuant to the terms of the instrument embodying such
         Guarantee Obligation, unless such primary obligation and the maximum
         amount for which such guaranteeing person may be liable are not stated
         or determinable, in which case the amount of such Guarantee Obligation
         shall be such guaranteeing person's maximum reasonably anticipated
         liability in respect thereof as determined by the Borrower (and
         reasonably acceptable to the Administrative Agent) in good faith.

                  "Guarantees": the collective reference to the Affiliate
         Guarantee, the guarantees contained in Section and each guarantee
         provided pursuant to subsection .

                  "Guarantor": any Person delivering a Guarantee pursuant to
         this Agreement, including, without limitation, the Parent Guarantors
         and the Guarantors under (and as defined in) the US Credit Agreement.

                  "HCG": Harris Chemical Group, Inc., a Delaware corporation.

                  "HCNA": Harris Chemical North America, Inc., a Delaware
         corporation.

                  "Included Investments": at any date, the amount equal to the
         sum on such date of (i) the aggregate amount of Indebtedness then owing
         pursuant to subsection 10.2(e) to any Guarantor (as 


                                      -22-

<pg$pcn>
         defined in the US Credit Agreement) by Subsidiaries of HCNA which are
         not then Guarantors (as defined in the US Credit Agreement) or members
         of the Sifto Group, (ii) the aggregate amount of Indebtedness then
         owing pursuant to subsection 10.2(e) to any member of the Sifto Group
         by Subsidiaries of HCNA which are not then Guarantors (as defined in
         the US Credit Agreement) or members of the Sifto Group, (iii) the
         aggregate amount of Investments then made pursuant to subsection
         10.10(e) by Guarantors (as defined in the US Credit Agreement) in
         Subsidiaries of HCNA which are not Guarantors (as defined in the US
         Credit Agreement) or members of the Sifto Group, (iv) the aggregate
         amount of Investments then made pursuant to subsection 10.10(e) by
         members of the Sifto Group in Subsidiaries of HCNA which are not
         Guarantors (as defined in the US Credit Agreement) or members of the
         Sifto Group and (v) the aggregate amount of Guarantee Obligations then
         outstanding pursuant to subsection 10.4(h).

                  "Incremental Investment": as defined in "Permitted Investment
         Amount".

                  "Indebtedness": of any Person at any date, (a) all
         indebtedness of such Person for borrowed money or for the deferred
         purchase price of property or services (other than current trade
         liabilities incurred in the ordinary course of business and payable in
         accordance with customary practices), (b) any other indebtedness of
         such Person which is evidenced by a note, bond, debenture or similar
         instrument, (c) all obligations of such Person under Financing Leases
         and (d) all obligations of such Person in respect of letters of credit,
         acceptances and similar obligations issued or created for the account
         of such Person.

                  "Insignificant Subsidiary": at any time, each Subsidiary that,
         for the most recent fiscal year for which the relevant financial
         information is available, had revenues, determined in accordance with
         GAAP, of less than US$1,000,000.

                  "Insolvency": with respect to any Multiemployer Plan, the
         condition that such Plan is insolvent within the meaning of Section
         4245 of ERISA.

                  "Insolvent":  pertaining to a condition of Insolvency.

                  "Intellectual Property":  as defined in subsection 7.9.

                  "Interest Act": the Interest Act (Canada), as amended from
         time to time.

                  "Interest Coverage Ratio": for any period with respect to HCNA
         and its Subsidiaries, the ratio of (i) Consolidated EBITDA to (ii) the
         amount equal to Consolidated Interest Expense for such period.


                                      -23-

<pg$pcn>
                  "Interest Payment Date": (a) as to any Base Rate Loan, the
         last day of each March, June, September and December to occur while
         such Loan is outstanding, (b) as to any Eurodollar Loan having an
         Interest Period of three months or less and any BA Rate Loan, the last
         day of such Interest Period, and (c) as to any Eurodollar Loan having
         an Interest Period longer than three months, the last day of such
         Interest Period and each other day which is three months, or a whole
         multiple thereof, after the first day of such Interest Period.

                  "Interest Period": with respect to any Eurodollar Loan or BA
         Rate Loan:

                           (i) initially, the period commencing on the borrowing
                  or conversion date, as the case may be, with respect to such
                  Loan and ending one, two, three or, in the case of any
                  Eurodollar Loan, six months thereafter, as selected by the
                  relevant Borrower in its notice of borrowing or notice of
                  conversion, as the case may be, given with respect thereto;
                  and

                           (ii) thereafter, each period commencing on the last
                  day of the next preceding Interest Period applicable to such
                  Loan and ending one, two, three or, in the case of any
                  Eurodollar Loan, six months thereafter, as selected by such
                  Borrower by irrevocable notice to the Administrative Agent not
                  less than three Business Days prior to the last day of the
                  then current Interest Period with respect thereto;

         provided that, all of the foregoing provisions relating to Interest
         Periods are subject to the following:

                           (1) if any Interest Period pertaining to a Loan would
                  otherwise end on a day that is not a Business Day, such
                  Interest Period shall be extended to the next succeeding
                  Business Day unless the result of such extension would be to
                  carry such Interest Period into another calendar month in
                  which event such Interest Period shall end on the immediately
                  preceding Business Day;

                           (2) any Interest Period that would otherwise extend
                  beyond the Termination Date shall end on the Termination Date;

                           (3) any Interest Period pertaining to a Loan that
                  begins on the last Business Day of a calendar month (or on a
                  day for which there is no numerically corresponding day in the
                  calendar month at the end of such Interest Period) shall end
                  on the last Business Day of a calendar month; and


                                      -24-

<pg$pcn>
                           (4) each Borrower shall select Interest Periods so as
                  not to require a payment or prepayment of any Loan owing by it
                  during an Interest Period for such Loan.

                  "Interim Accounting Period": with respect to each Borrower,
         each period of four or five weeks into which the fiscal quarter of such
         Borrower is divided, based upon a fiscal year of four thirteen-week
         fiscal quarters and with each such fiscal quarter being divided into
         two four-week periods followed by one five-week period.

                  "Inventory":  as defined in "Eligible Inventory".

                  "Investment Company Act": the Investment Company Act of 1940
         of the United States, as amended from time to time.

                  "Investments":  as defined in subsection 10.10.

                  "Joinder Agreement": the Joinder Agreement to be executed and
         delivered by any Subsequent Borrower, substantially in the form of
         Exhibit G, as the same may be amended, restated, supplemented or
         otherwise modified from time to time.

                  "Landlord's Waiver": a Landlord's Letter, substantially in the
         form of Exhibit H-1, or a Warehousemen Notice, as the context shall
         require.

                  "L/C Commitment": C$3,000,000 (or the Equivalent Amount
         thereof).

                  "L/C Issuer":  as defined in subsection 4.1(a).

                  "L/C Obligations": at any time with respect to a Borrower, an
         amount equal to the sum (without duplication) of (a) the aggregate then
         undrawn and unexpired amount of the then outstanding Letters of Credit
         issued for the account of such Borrower, (b) the aggregate amount of
         drawings under Letters of Credit issued for the account of such
         Borrower which have not then been reimbursed by such Borrower (through
         the incurrence of Revolving Credit Loans) pursuant to subsection 4.2
         and (c) the maximum amount of all other outstanding obligations
         incurred by the Administrative Agent and the Lenders at the request of
         such Borrower, whether direct or indirect, contingent or otherwise, due
         or not due, in connection with the issuance of a reimbursement
         agreement or guaranty by the Administrative Agent with respect to any
         Letter of Credit.

                  "Lenders": as defined in the preamble to this Agreement; each
         a "Lender".

                  "Letters of Credit":  as defined in subsection 4.1.


                                      -25-

<pg$pcn>
                  "Lien": any mortgage, pledge, hypothecation, assignment,
         deposit arrangement, encumbrance, lien (statutory or other), charge or
         other security interest or any preference, priority or other security
         agreement or preferential arrangement of any kind or nature whatsoever
         (including, without limitation, any conditional sale or other title
         retention agreement and any Financing Lease having substantially the
         same economic effect as any of the foregoing).

                  "Loan": any loan (including, without limitation, a Swing Line
         Loan) made by a Lender pursuant to this Agreement to any Borrower.

                  "Loan Documents": this Agreement, the Notes, the Applications,
         the Guarantees, the Security Documents, the Collateral Covenant
         Agreement and the Joinder Agreement and any other agreements or
         documents executed in connection with this Agreement or the
         transactions contemplated hereby, as the same may be amended, restated,
         supplemented or otherwise modified from time to time.

                  "Loan Parties": each Borrower, each Guarantor and each
         Subsidiary of HCNA which is a party to a Loan Document.

                  "Lock Box Agreement": each lock box agreement executed and
         delivered by the Borrowers, substantially in the form of Exhibit E
         (with such revisions thereto as may be negotiated among the Collateral
         Agent, the Administrative Agent, the relevant Borrower and the relevant
         lock box bank), as the same may be amended, restated, supplemented or
         otherwise modified from time to time.

                  "Majority Lenders": at any time, Lenders the Commitment
         Percentages of which aggregate more than 50%.

                  "Major Project Capital Expenditures": Capital Expenditures by
         HCNA or any of its Subsidiaries in respect of the purchase or other
         acquisition of fixed or capital assets comprising (a) up to
         US$9,400,000 with respect to packaging equipment for evaporated salt
         produced as a by-product of an unrelated industrial operation in New
         Johnsville, TN, (b) up to US$5,500,000 with respect to additional
         production capacity of 500,000 tons to the Goderich mine, (c) up to
         US$2,500,000 with respect to Phase II of the West pond Development Plan
         to expand the pond area, increase solar capacity and access an area of
         higher brine concentration in order to reduce the use of higher cost
         raw materials and (d) up to US$5,200,000 by GSL with respect to the
         sulfate of potash ("SOP") expansion plan for the implementation of
         plant cooling processes for improved yields and extended production of
         the Ogden plant and additional loading and storage facilities to
         support expanded potash and magnesium chloride production, or 


                                      -26-

<pg$pcn>
         Capital Expenditures with respect to any other major project which may
         be substituted for any of the foregoing projects in whole or in part
         upon (x) delivery of a certificate of a Responsible Officer of HCNA or
         any Borrower stating that (i) such Responsible Officer has no knowledge
         of any material adverse effect which could reasonably be expected to
         result from such replacement project and (ii) such Responsible Officer
         believes to the best of such Responsible Officer's knowledge that such
         replacement project has economic payback and return characteristics at
         least as favorable as those of the project being replaced and (y)
         approval of the Administrative Agent (which approval shall not be
         unreasonably withheld).

                  "Material Adverse Effect":  a material adverse effect on:

                           (a) the business, operations, property or financial
                  or other condition of either (i) with respect to the use of
                  such term in subsection 10.19, any Borrower and its
                  Subsidiaries taken as a whole and (ii) with respect to any
                  other provision of this Agreement or any other Loan Document,
                  HCNA and its Subsidiaries taken as a whole; or

                           (b) the validity or enforceability of this Agreement,
                  any of the Notes or any Application or any of the other Loan
                  Documents or the rights or remedies of the Administrative
                  Agent, the Collateral Agent or the Lenders hereunder or
                  thereunder.

                  "Materials of Environmental Concern": any gasoline or
         petroleum (including crude oil or any fraction thereof) or petroleum
         products or any hazardous or toxic substances or materials or any
         pollutants, contaminants or wastes, defined or regulated as such in or
         under any Environmental Law, including, without limitation, asbestos,
         polychlorinated biphenyls and urea-formaldehyde insulation.

                  "Maximum Available Credit": an amount equal to (a) the lesser
         of (i) the Aggregate Commitment and (ii) the Aggregate Canadian
         Borrowing Base Availability minus (b) the Sifto Reserve, if any.

                  "Multiemployer Plan": a US Plan which is a multiemployer plan
         as defined in Section 4001(a)(3) of ERISA.

                  "NACC ": North American Chemical Company, a Delaware
         corporation.

                  "NAMSCO": as defined in the preamble of this Agreement.


                                      -27-

<pg$pcn>
                  "NASC":  as defined in the preamble to this Agreement.

                  "Non-Responding Lender": with respect to any proposed
         amendment, restatement, supplement, waiver, consent or other
         modification to this Agreement or any other Loan Document pursuant to
         subsection 14.1 or any other determination to be made by the Majority
         Lenders, the Required Lenders or the Aggregate Required Lenders, as the
         case may be, hereunder or under any other Loan Document (each, a
         "Proposed Determination"), in each case as to which the Lenders have
         been given a Qualified Determination Notice, any Lender which fails to
         provide an affirmative or negative written response to the
         Administrative Agent within 10 Business Days, after receiving such
         Qualified Determination Notice. For the purposes of this definition,
         "Qualified Determination Notice" shall mean any written notice
         delivered to each Lender at least 10 Business Days prior to the
         response deadline for the relevant Proposed Determination.

                  "Notes": the collective reference to the Revolving Credit
         Notes and the Swing Line Notes; each, a "Note".

                  "Obligations": the collective reference to the unpaid
         principal of and interest on the Notes and all other obligations and
         liabilities of the Borrowers to the Administrative Agent, the
         Collateral Agent and the Lenders (including, without limitation,
         interest accruing after the maturity of the Loans and interest accruing
         after the filing of any petition in bankruptcy, or the commencement of
         any insolvency, reorganization or like proceeding, relating to any
         Borrower whether or not a claim for post-filing or post-petition
         interest is allowed in such proceeding), whether direct or indirect,
         absolute or contingent, due or to become due, or now existing or
         hereafter incurred, which may arise under, out of, or in connection
         with, this Agreement, the Notes, the Applications, the other Loan
         Documents or any other document made, delivered or given in connection
         herewith or therewith, in each case whether on account of principal,
         interest, reimbursement obligations (including, without limitation, all
         L/C Obligations), fees, indemnities, costs, expenses or otherwise
         (including, without limitation, all fees and disbursements of counsel
         to the Administrative Agent, to the Collateral Agent or to the Lenders
         that are required to be paid by a Borrower or HCNA pursuant to the
         terms of this Agreement or any other Loan Document).

                  "Original Closing Date":  October 15, 1993.

                  "Parent Guarantors": the collective reference to HCNA, NASC
         and NAMSCO.

                  "Participant":  as defined in subsection 14.6(b).


                                      -28-

<pg$pcn>
                  "PBGC": the Pension Benefit Guaranty Corporation established
         pursuant to Subtitle A of Title IV of ERISA.

                  "Permitted Capital Expenditures": as defined in subsection
         10.5.

                  "Permitted Investment Amount": at any date, (a) for purposes
         of subsection , an amount not to exceed US$10,000,000 (or the
         Equivalent Amount thereof), at any one time outstanding and (b) for
         purposes of subsections , 10.4(h) and in the aggregate, an amount not
         to exceed US$10,000,000 (or the Equivalent Amount thereof) at any one
         time outstanding. For purposes of this definition, the amount of an
         Investment which, at any date, shall be deemed to be "outstanding"
         shall be the amount (to the extent that such amount is not less than
         zero) equal to (x) the aggregate amount (1) invested by HCNA and its
         Subsidiaries after the Closing Date in joint ventures in which HCNA or
         any of its Subsidiaries holds Capital Stock or (2) loaned to, or
         invested in, any Subsidiary of HCNA which is not a Guarantor (as
         defined in the US Credit Agreement) or a member of the Sifto Group, as
         the case may be (such amount invested or loaned after the Closing Date,
         the "Incremental Investment"), minus (y) the aggregate amount of cash
         dividends, principal repayments or other cash distributions (other than
         interest payments) actually received by HCNA and its Subsidiaries
         during the period from the Closing Date to the date of calculation on
         account of such Incremental Investment (as reported on the financial
         statements of HCNA and its Subsidiaries delivered pursuant to
         subsection or 9.1(a), 9.1(b) as the case may be, for such period).

                  "Permitted Refinancing Indebtedness": Indebtedness that
         refunds, refinances or otherwise replaces any other Indebtedness
         ("Refinanced Indebtedness"); provided, that (a) the aggregate principal
         amount (or, if issued with original issue discount, the aggregate issue
         price) of such refinancing Indebtedness is equal to or less than the
         sum of (i) the aggregate principal amount (or, if issued with original
         issue discount, the aggregate accreted value) then outstanding of such
         Refinanced Indebtedness and (ii) any premiums, fees or customary taxes
         payable in connection with such refinancing, (b) no scheduled principal
         payments shall be payable in respect of such refinancing Indebtedness
         prior to February 28, 2003, (c) each obligor, guarantor and item of
         collateral in respect of such refinancing Indebtedness shall also have
         been, to at least the same extent, an obligor, guarantor, or item of
         collateral, as the case may be, in respect of such Refinanced
         Indebtedness, (d) the interest rate and other operating costs shall be
         consistent with current market conditions and other terms and
         conditions of such refinancing Indebtedness (including, without
         limitation, any subordination provisions) shall be 


                                      -29-

<pg$pcn>
         no less favorable to the interests of the relevant obligor and the
         Lenders than the terms and conditions of such Refinanced Indebtedness
         and (e) after giving effect to the incurrence of such Refinancing
         Indebtedness, HCNA shall be in compliance with the covenants set forth
         in subsection 10.1, determined on a pro forma basis as if such
         refinancing had occurred on the first day of the most recent period of
         four consecutive quarters for which the relevant financial information
         is available.

                  "Person": an individual, partnership, corporation, business
         trust, joint stock company, trust, unincorporated association, joint
         venture, Governmental Authority or other entity of whatever nature.

                  "Personal Property Security Act (Ontario)": the Personal
         Property Security Act (Ontario), as amended or replaced from time to
         time.

                  "Preferred Claims": on any date with respect to a Borrower,
         all encumbrances, claims, liens, deemed trusts and privileges created
         by statute or regulation (in contrast with Liens voluntarily granted)
         which, on such date, secure amounts then overdue and payable and which
         rank prior to or pari passu with the Collateral Agent's Lien or the
         Collateral Agent's, the Administrative Agent's and the Lenders' Liens
         on all or any part of the Collateral of such Borrower, including,
         without limitation:

                           (a) for such amounts which are payable for wages,
                  employee deductions (in respect of income tax, unemployment
                  insurance and pension plan deductions), sales taxes, goods and
                  services taxes, municipal taxes, excise taxes, income taxes,
                  employee health taxes, workers' compensation, vacation pay,
                  government royalties, pension fund obligations and overdue
                  rents; and

                           (b) to the extent that such claims have been asserted
                  against such Borrower, warehousemen's and similar liens;

         provided that with respect to Preferred Claims resulting from
         warehousemen's and similar Liens which encumber Inventory, the amount
         of such Preferred Claim shall be deemed to be the amount which the
         Collateral Agent reasonably determines is sufficient to provide for
         future obligations of the Borrower which will need to be satisfied in
         order to remove such Inventory from such location in an orderly manner
         over a reasonable period of time.

                  "Preferred Sales Tax Claims": on any date with respect to a
         Borrower, all encumbrances, claims, liens, deemed trusts and privileges
         created by statute or regulation (in 


                                      -30-

<pg$pcn>
         contrast with Liens voluntarily granted) which, on such date, rank
         prior to or pari passu with the Collateral Agent's Lien or the
         Collateral Agent's, the Administrative Agent's and the Lenders' Liens
         on all or any part of the Collateral of such Borrower, for the
         aggregate amount of accrued unpaid obligations of such Borrower
         (whether or not overdue) in respect of goods and services and sales
         taxes (including, without limitation, the goods and services tax and
         retail sales tax) as of such date.

                  "Preferred Withholding Tax Claims": on any date with respect
         to a Borrower, all encumbrances, claims, liens, deemed trusts and
         privileges created by statute or regulation (in contrast with Liens
         voluntarily granted) which, on such date, rank prior to or pari passu
         with the Collateral Agent's Lien or the Collateral Agent's, the
         Administrative Agent's and the Lenders' Liens on all or any part of the
         Collateral of such Borrower, for the aggregate amount of accrued unpaid
         obligations of such Borrower (whether or not overdue) in respect of
         withholding deductions (including, without limitation, withholding
         deductions in respect of employee wages, pension obligations and
         unemployment insurance) and health taxes as of such date.

                  "Properties":  as defined in subsection 7.16(i).

                  "Public Debt": the collective reference to the Senior Secured
         Notes, the Senior Subordinated Notes and the Sifto Notes.

                  "Public Warehouse": as to any Borrower, any warehouse other
         than a warehouse which is (a) owned or leased entirely by such Borrower
         or any of its Subsidiaries and (b) under the control and management of
         such Borrower or any of its Subsidiaries.

                  "Qualifying Canadian Institutions": (a) banks incorporated
         under the Bank Act (Canada) and named in Schedule I or Schedule II
         thereof and resident in Canada within the meaning of the Tax Act and
         (b) other financial institutions, commercial banks or near-banks
         incorporated in Canada and resident in Canada within the meaning of the
         Tax Act (including, in any event, GE Capital Canada).

                  "Refunded Swing Line Loans":  as defined in subsection 5.4(a).

                  "Register":  as defined in subsection 14.6(d).

                  "Regulation D": Regulation D of the Board of Governors of the
         Federal Reserve System of the United States as in effect from time to
         time.


                                      -31-

<pg$pcn>
                  "Regulation U": Regulation U of the Board of Governors of the
         Federal Reserve System of the United States as in effect from time to
         time.

                  "Reorganization": with respect to any Multiemployer Plan, the
         condition that such plan is in reorganization within the meaning of
         Section 4241 of ERISA.

                  "Reportable Event": any of the events set forth in Section
         4043(b) of ERISA, other than those events as to which the thirty day
         notice period is waived under subsections .22, .23, .25, .27, .28, .29,
         .30, .31, .32, .34 or .35 of the PBGC Reg. Section 4043.

                  "Required Lenders": at any time, Lenders the Commitment
         Percentages of which aggregate at least 66-2/3%.

                  "Requirement of Law": as to any Person, the Certificate of
         Incorporation and By-Laws or other organizational or governing
         documents of such Person, and any law, treaty, rule or regulation or
         determination of an arbitrator or a court or other Governmental
         Authority, in each case applicable to or binding upon such Person or
         any of its property or to which such Person or any of its property is
         subject.

                  "Responsible Officer": of any Person, the chief executive
         officer and the president of such Person or, with respect to financial
         matters, the chief financial officer and the treasurer of such Person.

                  "Restricted Payment Allowance Condition": with respect to
         permitted Investments and Restricted Payments, the simultaneous
         satisfaction of each of the following conditions:

                           (a) no Default or Event of Default shall have
                  occurred and be continuing or would result therefrom;

                           (b) the Interest Coverage Ratio of HCNA for the
                  period of four consecutive fiscal quarters ending on the date
                  of the financial statements of HCNA then most recently
                  delivered to the Administrative Agent pursuant to subsection
                  or 9.1(a), 9.1(b) as the case may be, shall be not less than 
                  2.25 to 1.0; and

                           (c) the Fixed Charge Coverage Ratio of HCNA for the
                  period of four consecutive fiscal quarters ending on the date
                  of the financial statements of HCNA then most recently
                  delivered to the Administrative Agent pursuant to subsection
                  or 9.1(a), 9.1(b) as the case may be, shall not be less than
                  1.30 to 1.0.

                  "Restricted Payments":  as defined in subsection 10.9.


                                      -32-

<pg$pcn>
                  "Revocation Period":  as defined in subsection 4.1 (f).

                  "Revolving Credit Loans":  as defined in subsection 2.1(a).

                  "Revolving Credit Note":  as defined in subsection 2.2.

                  "Sale/Leaseback Documents": any agreements or documents
         executed in connection with the Sale/Leaseback Transaction.

                  "Sale/Leaseback Transaction": the sale/leaseback transaction
         involving the Argus Utility Plant for US$75,000,000 consummated on July
         15, 1996 and more specifically described in the Sale/Leaseback
         Documents.

                  "SEC":  the United States Securities and Exchange Commission.

                  "Security Agreements": the collective reference to (a)
         instruments, documents and agreements described on Schedule VIII and
         (b) any analogous instruments, documents and agreements from time to
         time delivered by the Subsequent Borrower, as each of the same may be
         amended, restated, supplemented or otherwise modified from time to
         time.

                  "Security Documents": the collective reference to the Security
         Agreements, the Lock Box Agreements, the Collateral Covenant Agreement,
         and all other security documents hereafter delivered to the
         Administrative Agent or the Collateral Agent which grant a Lien on any
         asset or assets of any Person to secure the obligations and liabilities
         of a Borrower hereunder, under the Notes, under the Applications and/or
         under any of the other Loan Documents or to secure any guarantee of any
         such obligations and liabilities (including without limitation, any
         such security documents delivered pursuant to the US Credit Agreement).

                  "Senior Secured Notes": the Senior Secured Notes, due 2001,
         issued by HCNA in an original aggregate principal amount of
         US$200,000,000, and any Permitted Refinancing Indebtedness in respect
         thereof, as the same may be amended, restated, supplemented or
         otherwise modified from time to time in accordance with the provisions
         of subsection 10.11(a).

                  "Senior Subordinated Notes": the Senior Subordinated Notes,
         due 2003, issued by HCNA in an original aggregate principal amount of
         US$335,000,000, and any Permitted Refinancing Indebtedness in respect
         thereof, as the same may be amended, restated, supplemented or
         otherwise modified from time to time in accordance with the provisions
         of subsection 10.11(a).


                                      -33-

<pg$pcn>
                  "Services Agreement": the Services Agreement described in the
         Existing Credit Agreement, as the same may be amended, restated,
         supplemented or otherwise modified from time to time in accordance with
         the provisions of subsection 10.11(b).

                  "Sifto":  as defined in the preamble.

                  "Sifto Group": the collective reference to (i) Sifto, (ii) the
         Subsequent Borrower, (iii) any Subsidiaries of Sifto and the Subsequent
         Borrower which are Guarantors pursuant to this Agreement and (iv) any
         Canadian holding company for Sifto and the Subsequent Borrower which is
         a Guarantor pursuant to this Agreement and which has no material
         liabilities and holds no material assets other than the Capital Stock
         of Sifto and the Subsequent Borrower.

                  "Sifto Notes": the Senior Secured Notes, due July 15, 2000,
         issued by Sifto in an original aggregate principal amount of
         US$100,000,000, and any Permitted Refinancing Indebtedness in respect
         thereof, as the same may be amended, restated, supplemented or
         otherwise modified from time to time in accordance with the provisions
         of subsection 10.11(a).

                  "Sifto Reserve": for any period set forth below during which
         any Sifto Notes (other than any Permitted Refinancing Indebtedness in
         respect thereof) are outstanding, the amount set forth opposite such
         period:

<TABLE>
<CAPTION>
                         Period                      Sifto Reserve
<S>                                                  <C>
                  03/14/00 - 04/13/00                US$2,000,000
                  04/14/00 - 05/13/00                US$3,333,333
                  05/14/00 - 06/13/00                US$4,666,667
                  06/14/00 and thereafter            US$6,000,000
</TABLE>

                  "Single Employer Plan": any United States Pension Plan which
         is covered by Title IV of ERISA, but which is not a Multiemployer Plan.

                  "Soda Ash Subsidiary": any Subsidiary of HCNA (other than a
         Borrower) organized for the purpose of engaging substantially in the
         production or marketing of soda ash.

                  "Solvent":  with respect to any Person, shall mean that:

                           (a) the present value of such Person's assets is in
                  excess of the total amount of such Person's liabilities;

                           (b) such Person is able to pay its debts as they
                  become due; and


                                      -34-

<pg$pcn>
                           (c) such Person does not have unreasonably small
                  capital to carry on its business as theretofore operated and
                  all businesses in which such Person is about to engage.

                  "Standby Letter of Credit":  as defined in subsection 4.1(b).

                  "Stockholders' Agreement": the Stockholders' Agreement, dated
         as of October 15, 1993, as amended, attached hereto as Exhibit L, among
         HCG and the Stockholders (as defined therein), as the same may be
         amended, restated, supplemented or otherwise modified from time to time
         in accordance with the provisions of subsection 10.11(b).

                  "Subsequent Borrower":  a Subsidiary of HCNA which:

                           (a) is incorporated after the date hereof under the
                  laws of a jurisdiction within Canada which (i) is reasonably
                  acceptable to the Administrative Agent and the Collateral
                  Agent and (ii) permits the Guarantees contemplated by this
                  Agreement;

                           (b) holds the assets of the marketing operations of
                  Sifto and the Capital Stock of which is held beneficially and
                  of record by the same Person who holds beneficially and of
                  record the Capital Stock of Sifto;

                           (c) has executed and delivered each of (i) the
                  Joinder Agreement, (ii) Revolving Credit Notes, (iii) Swing
                  Line Notes, (iv) one or more Security Agreements, (v) one or
                  more Lock Box Agreements and (vi) such other documents,
                  instruments and agreements as may be deemed reasonably
                  necessary or appropriate by the Collateral Agent to perfect
                  the security interest (or the applicable equivalent thereof)
                  of the Collateral Agent or the Collateral Agent, the
                  Administrative Agent and the Lenders in the Collateral (as
                  defined in the relevant Security Agreements);

                           (d) has provided to the Collateral Agent and to the
                  Administrative Agent legal opinions, in form and substance
                  reasonably satisfactory to the Administrative Agent and the
                  Collateral Agent, from counsel reasonably acceptable to the
                  Collateral Agent and the Administrative Agent, with respect to
                  the matters covered by the opinions delivered pursuant to
                  subsection 8.1(m) and any other matters reasonably requested
                  by them; and

                           (e) has provided to the Administrative Agent and to
                  the Collateral Agent incumbency certificates and board
                  resolutions, in form and substance reasonably satisfactory to
                  the Administrative Agent and to the 


                                      -35-

<pg$pcn>
                  Collateral Agent, together with such other certificates,
                  documents, instruments and agreements as the Administrative
                  Agent or the Collateral Agent reasonably may request.

                  "Subsidiary": as to any Person, a corporation, partnership or
         other entity of which shares of Voting Stock sufficient to elect a
         majority of the board of directors or other managers of such
         corporation, partnership or other entity are at the time owned, or the
         management of which is otherwise controlled, directly or indirectly
         through one or more intermediaries, or both, by such Person. Unless
         otherwise qualified, all references to a "Subsidiary" or to
         "Subsidiaries" in this Agreement shall refer to a Subsidiary or
         Subsidiaries of a Borrower.

                  "Swing Line Commitment": at any date, the obligation of the
         Swing Line Lender to make Swing Line Loans pursuant to subsection in
         the amount referred to therein.

                  "Swing Line Lender":  GE Capital Canada.

                  "Swing Line Loans":  as defined in subsection 5.1(a).

                  "Swing Line Note":  as defined in subsection 5.2.

                  "Tax Act": the Income Tax Act (Canada), as amended from time
         to time.

                  "Taxes":  as defined in subsection 6.14.

                  "Tax Sharing Agreement": the Tax Sharing Agreement, dated as
         of October 15, 1993, between HCG and HCNA, attached hereto as Exhibit
         M, as the same may be amended, restated, supplemented or otherwise
         modified from time to time in accordance with the provisions of
         subsection 10.11(b).

                  "Termination Date": the earlier of (a) February 28, 2002 and
         (b) February 15, 2001, if any Senior Secured Notes (other than
         Permitted Refinancing Indebtedness in respect thereof) are outstanding
         on such date.

                  "Tranche": at any date, the collective reference to all
         Eurodollar Loans or BA Rate Loans, as the case may be, which then have
         Interest Periods in effect which began on the same date and are
         scheduled to end on the same later date (whether or not such Loans
         shall originally have been made on the same day).

                  "Transferee":  as defined in subsection 14.6(f).

                  "Transferred HCNA Amounts":  as defined in subsection 10.5.


                                      -36-

<pg$pcn>
                  "Type": as to any Loan, its nature as a Base Rate Loan or a
         Eurodollar Loan.

                  "UCC": the Uniform Commercial Code as from time to time in
         effect in the State of New York and, as to perfection and enforcement
         of security interests, the Uniform Commercial Code as from time to time
         in effect in each jurisdiction where, pursuant to the Uniform
         Commercial Code as from time to time in effect in the State of New
         York, perfection and the effect of non-perfection is to be determined.

                  "Uniform Customs": the Uniform Customs and Practice for
         Documentary Credits (1993 Revision), International Chamber of Commerce
         Publication No. 500, as the same may be amended from time to time.

                  "US Administrative Agent": General Electric Capital
         Corporation, administrative agent under the US Credit Agreement.

                  "US Base Rate": for any day, a rate per annum equal to the
         greatest of (a) the Prime Rate in effect on such day, (b) the CP Rate
         in effect on such day and (c) the US Federal Funds Effective Rate in
         effect on such day plus 0.50%. For purposes hereof: "Prime Rate" shall
         mean, for any day, the per annum base rate on corporate loans posted by
         at least 75% of the United States' 30 largest banks as most recently
         reported in the "Money Rates" column (or any comparable successor
         column) of The Wall Street Journal on or prior to such day, provided
         that if The Wall Street Journal changes its method of reporting such
         rate, the Prime Rate shall be the highest rate per annum reported by
         Bank of America National Trust and Savings Association or The First
         National Bank of Boston as its "prime rate" or "reference rate"; "CP
         Rate" shall mean, for any day, the per annum commercial paper rate for
         90-day commercial paper placed directly by General Electric Capital
         Corporation as most recently reported in the "Money Rates" column (or
         any comparable successor column) of The Wall Street Journal on or prior
         to such day, provided that if The Wall Street Journal ceases to publish
         such rate, the CP Rate shall be the published rate for 90-day dealer
         placed commercial paper (sold through dealers by major corporations) as
         determined by the US Administrative Agent; and "US Federal Funds
         Effective Rate" shall mean, for any day, the weighted average of the
         rates on overnight federal funds transactions with members of the
         Federal Reserve System arranged by federal funds brokers, as published
         on the next succeeding Business Day by the Federal Reserve Bank of New
         York, or, if such rate is not so published for any day which is a
         Business Day, the average of the quotations for the day of such
         transactions received by the US Administrative Agent from three federal
         funds brokers of recognized standing selected by it. If for any 


                                      -37-

<pg$pcn>
         reason the US Administrative Agent shall have determined (which
         determination shall be conclusive absent manifest error) that it is
         unable to ascertain the CP Rate or the US Federal Funds Effective Rate
         for any reason, including the inability or failure of the US
         Administrative Agent to obtain sufficient quotations in accordance with
         the terms thereof, the US Base Rate shall be determined without regard
         to clause (b) or (c), as the case may be, of the first sentence of this
         definition, as appropriate, until the circumstances giving rise to such
         inability no longer exist. Any change in the Base Rate due to a change
         in the Prime Rate, the CP Rate or the US Federal Funds Effective Rate
         shall be effective as of the opening of business on the effective day
         of such change in the Prime Rate, the CP Rate or the US Federal Funds
         Effective Rate, respectively.

                  "US Base Rate Loans": Loans denominated in US Dollars which
         bear interest at a rate based upon the US Base Rate.

                  "US Credit Agreement": the Credit and Guarantee Agreement,
         dated as of October 15, 1993, as amended and restated as of February
         27, 1997, among NACC, NASC, GSLMC, HCNA (as guarantor), the banks and
         other financial institutions from time to time parties thereto and
         General Electric Capital Corporation, as collateral agent and as
         administrative agent, as the same may be further amended, restated,
         supplemented or otherwise modified from time to time.

                  "US Dollars" and "US$": dollars in lawful currency of the
         United States of America.

                  "US Federal Funds Effective Rate": as defined in the
         definition of "US Base Rate".

                  "US Plan": at a particular time, any employee benefit plan
         which is covered by ERISA and in respect of which a Borrower or a
         Commonly Controlled Entity is (or, if such plan were terminated at such
         time, would under Section 4069 of ERISA be deemed to be) an "employer"
         as defined in Section 3(5) of ERISA.

                  "Voting Stock": of a Person, Capital Stock of such Person
         having ordinary voting power (other than Capital Stock having such
         power only by reason of the happening of a contingency) to elect
         directors of such Person.

                  "Warehousemen Notice": a Warehousemen Notice, substantially in
         the form of Exhibit H-2.

                  "Weighted Average Life to Maturity": when applied to any
         Indebtedness, at any date, the number of years obtained by dividing (a)
         the sum of the products obtained by multiplying (i) the amount of each
         then remaining 


                                      -38-

<pg$pcn>
         installment, sinking fund, serial maturity or other required payments
         of principal, including payment at final maturity, in respect thereof,
         by (ii) the number of years (calculated to the nearest one-twelfth)
         that will elapse between such date and the making of such payment, by
         (b) the then outstanding principal amount of such Indebtedness.

                  1.2 Other Definitional Provisions. (a) Unless otherwise
specified therein, all terms defined in this Agreement shall have the defined
meanings when used in the Notes or any certificate or other document made or
delivered pursuant hereto.

                  (b) As used herein and in the Notes, and any certificate or
other document made or delivered pursuant hereto, accounting terms relating to
HCNA and its Subsidiaries not defined in subsection and accounting terms partly
defined in subsection , to the extent not defined, shall have the respective
meanings given to them under GAAP.

                  (c) The words "hereof", "herein" and "hereunder" and words of
similar import when used in this Agreement shall refer to this Agreement as a
whole and not to any particular provision of this Agreement, and Section ,
subsection, Schedule and Exhibit references are to this Agreement unless
otherwise specified.

                  (d) The meanings given to terms defined herein shall be
equally applicable to both the singular and plural forms of such terms.

                  (e) Terms defined in the UCC and not otherwise defined herein
shall have the meanings ascribed thereto in the UCC.


         SECTION 2.     AMOUNT AND TERMS OF REVOLVING CREDIT
                        COMMITMENTS

                  2.1 Revolving Credit Commitments. (a) The Borrowers
acknowledge and confirm that the Lenders have made revolving credit loans to the
Borrowers under the Existing Credit Agreement that are outstanding on the date
hereof in the aggregate principal amount of US$ 0.00. The Borrowers hereby
reaffirm their obligations to pay such existing revolving credit loans in
accordance with the terms and provisions of this Agreement and the other Loan
Documents and agree that such revolving credit loans constitute Revolving Credit
Loans for all purposes of this Agreement. Subject to the terms and conditions
hereof, each Lender severally agrees to make revolving credit loans ("Revolving
Credit Loans") to the Borrowers from time to time during the Commitment Period
in an aggregate principal amount at any one time outstanding which, when added
to such Lender's Commitment Percentage of the aggregate amount of L/C
Obligations and Swing Line Loans then outstanding with respect to all Borrowers,
does not exceed the amount of such Lender's Commitment; provided that no
Revolving Credit Loans shall be made 


                                      -39-

<pg$pcn>
to a Borrower if, after giving effect thereto and the use of proceeds thereof,
(x) the Aggregate Outstanding Extensions of Credit then owing by such Borrower
to all Lenders would exceed the Borrowing Base then in effect with respect to
such Borrower or (y) the Aggregate Outstanding Extensions of Credit then owing
by all Borrowers to all Lenders would exceed the Maximum Available Credit.
During the Commitment Period the Borrowers may use the Commitments by borrowing,
prepaying the Revolving Credit Loans in whole or in part, and reborrowing, all
in accordance with the terms and conditions hereof.

                  (b) The Revolving Credit Loans may from time to time be (i)
Eurodollar Loans denominated in US Dollars, (ii) Canadian Prime Rate Loans,
(iii) US Base Rate Loans, (iv) BA Rate Loans or (v) a combination thereof, as
determined by the relevant Borrower and notified to the Administrative Agent in
accordance with subsections and 2.3, 6.6 provided that no Revolving Credit Loan
shall be made as a Eurodollar Loan or a BA Rate Loan after the day that is one
month prior to the Termination Date.

                  2.2 Revolving Credit Notes. The Revolving Credit Loans made by
each Lender to a Borrower shall be evidenced by a promissory note of such
Borrower, substantially in the form of Exhibit A-1 (in the case of Eurodollar
Loans and US Base Rate Loans) or Exhibit A-2 (in the case of Canadian Prime Rate
Loans and BA Rate Loans), with appropriate insertions as to payor, payee, date
and principal amount (each, a "Revolving Credit Note" and collectively, the
"Revolving Credit Notes"), payable to the order of such Lender and in a
principal amount equal to the lesser of (a) the amount of the initial Commitment
of such Lender and (b) the aggregate unpaid principal amount of all Revolving
Credit Loans made by such Lender to such Borrower which are of the Type
contemplated by such Revolving Credit Note. Each Lender is hereby authorized to
record the date, Type and amount of each Revolving Credit Loan made by such
Lender to such Borrower, each continuation thereof, each conversion of all or a
portion thereof to another Type, the date and amount of each payment or
prepayment of principal thereof and, in the case of Eurodollar Loans and BA Rate
Loans, the length of each Interest Period with respect thereto, on its books and
records maintained for such purpose, and any such recordation shall constitute
prima facie evidence of the accuracy of the information so recorded; provided
that the failure of such Lender to make such recordation (or any error in
recordation) shall not affect the obligations of such Borrower hereunder or
under its Revolving Credit Note. Each Revolving Credit Note shall (x) be dated
the Original Closing Date, (y) be stated to mature on the Termination Date and
(z) provide for the payment of interest in accordance with subsection 6.8.

                  2.3 Procedure for Revolving Credit Loan Borrowing. A Borrower
may borrow under the Commitments during the Commitment Period on any Business
Day, provided that such Borrower shall give the Administrative Agent irrevocable
notice (which notice 


                                      -40-

<pg$pcn>
must be received by the Administrative Agent prior to 10:00 A.M., Toronto time,
(a) at least three Business Days prior to the requested Borrowing Date, if all
or any part of the requested Revolving Credit Loans are to be initially
Eurodollar Loans or BA Rate Loans or (b) at least one Business Day prior to the
requested Borrowing Date, otherwise). Such notice shall specify (i) the identity
of the Borrower seeking to borrow on such Borrowing Date, (ii) the amount to be
borrowed, (iii) the requested Borrowing Date, (iv) whether the borrowing is to
be of Eurodollar Loans, Canadian Prime Rate Loans, US Base Rate Loans, BA Rate
Loans or a combination thereof and (v) if the borrowing is to be entirely or
partly of Eurodollar Loans or BA Rate Loans, the respective amounts of each such
type of Loan and the respective lengths of the initial Interest Periods
therefor. Each borrowing by a Borrower under the Commitments (other than any
borrowing of Swing Line Loans or of Revolving Credit Loans the proceeds of which
are used to refund Swing Line Loans) shall be in an amount equal to (x) in the
case of US Base Rate Loans, US$1,000,000 or a whole multiple of US$100,000 in
excess thereof (or, if the then Available Commitments are less than
US$1,000,000, such lesser amount), (y) in the case of Canadian Prime Rate Loans,
C$1,000,000 or a whole multiple of C$100,000 in excess thereof (or, if the then
Available Commitments are less than C$1,000,000, such lesser amount) and (z) in
the case of Eurodollar Loans or BA Rate Loans, US$4,000,000 or C$2,000,000,
respectively, or a whole multiple of US$100,000 or C$100,000, respectively, in
excess thereof. Upon receipt of any such notice from a Borrower, the
Administrative Agent shall promptly notify each Lender thereof. Each Lender will
make the amount of its pro rata share of each borrowing available to the
Administrative Agent for the account of the relevant Borrower at the Canadian
Administrative Agent's Account for value prior to 11:00 A.M., Toronto time, on
the Borrowing Date requested by such Borrower. Such borrowing will then be made
available to such Borrower by the Administrative Agent making a wire transfer
promptly, and, in any event, by 12:00 Noon, Toronto time, of the amount made
available to the Administrative Agent by the Lenders, in like funds as received
by the Administrative Agent, to such Borrower's account listed on Schedule IX or
such other account as may be notified by such Borrower to the Administrative
Agent from time to time in writing.

                  2.4 Use of Proceeds of Revolving Credit Loans. The proceeds of
all Loans shall be used by the Borrowers for working capital and other general
corporate purposes of the Borrowers.

         SECTION 3. [INTENTIONALLY OMITTED]


                                      -41-

<pg$pcn>
         SECTION 4. AMOUNT AND TERMS OF LETTER OF CREDIT SUB-FACILITY

                  4.1 Issuance. (a) Subject to the terms and conditions of this
Agreement, the Administrative Agent and the Lenders agree to incur, from time to
time prior to the Termination Date, upon the request of the applicable Borrower
and for such Borrower's account, L/C Obligations by causing letters of credit
("Letters of Credit") to be issued (by a bank or other legally authorized Person
selected by such Borrower and acceptable to the Administrative Agent in its sole
discretion (each, an "L/C Issuer")) for such Borrower's account and guaranteed
by the Administrative Agent; provided, however, that if the L/C Issuer is a
Lender, then such Letters of Credit shall not be guaranteed by the
Administrative Agent but rather each Lender shall, subject to the terms and
conditions hereinafter set forth, purchase (or be deemed to have purchased) risk
participations in all Letters of Credit issued with the written consent of the
Administrative Agent, as more fully described in subsection 4.2(b). No Letter of
Credit shall be issued if, after giving effect to such issuance, (i) the
aggregate L/C Obligations of all Borrowers would exceed the L/C Commitment, (ii)
the Available Commitment of any Lender would be less than zero, (iii) the
Aggregate Outstanding Extensions of Credit then owing by the relevant Borrower
to all Lenders would exceed the Borrowing Base then in effect for such Borrower
or (iv) the Aggregate Outstanding Extensions of Credit then owing by all
Borrowers to all Lenders would exceed the Maximum Available Credit. No Letter of
Credit shall have an expiry date which is more than one year following the date
of issuance thereof, and neither the Administrative Agent nor Lenders shall be
under any obligation to incur L/C Obligations in respect of, or purchase risk
participations in, any Letter of Credit having an expiry date which is later
than the Termination Date.

                  (b) Each Letter of Credit shall be denominated in US Dollars
or in Canadian Dollars, be issued in a face amount of not less than US$50,000 at
the time of issue (in the case of Letters of Credit denominated in US Dollars)
or C$50,000 at the time of issue (in the case of Letters of Credit denominated
in Canadian Dollars) and (ii) be either (1) a standby letter of credit issued to
support obligations of a Borrower, contingent or otherwise, which are of a type
for which Revolving Credit Loans would be available if the obligations were then
due and payable (a "Standby Letter of Credit"), or (2) a commercial letter of
credit issued in respect of the purchase of goods or services by a Borrower in
the ordinary course of business (a "Commercial Letter of Credit"); and

                  (c)  [INTENTIONALLY OMITTED]

                  (d) Each Letter of Credit (whether denominated in US Dollars
or in Canadian Dollars) shall be subject to the Uniform Customs and, to the
extent not inconsistent therewith, the laws 


                                      -42-

<pg$pcn>
of the Province of Ontario and the laws of Canada applicable therein.

                  (e) No L/C Issuer shall at any time be obligated to issue any
Letter of Credit hereunder if such issuance would conflict with, or cause such
L/C Issuer or any Lender to exceed any limits imposed by, any applicable
Requirement of Law; provided that each L/C Issuer and each Lender hereby agree
to use reasonable efforts to permit such Letter of Credit to be issued within
the restrictions of such applicable Requirement of Law.

                  (f) With respect to each outstanding Letter of Credit issued
for the account of a Borrower hereunder which by its terms is automatically
renewed or extended unless notice to the contrary is received by the beneficiary
thereunder within the time period specified therein (such time period, the
"Revocation Period"), such Letter of Credit automatically shall be renewed or
extended on its then current expiry date unless, not less than 10 Business Days
prior to the end of the Revocation Period, either (i) such Borrower has provided
written notice to the L/C Issuer that it has elected not to extend or renew such
Letter of Credit or (ii) the Required Lenders have provided notice to such L/C
Issuer (notice of which determination such L/C Issuer shall promptly provide to
such Borrower) that they have elected not to permit the renewal or extension of
such Letter of Credit.

                  (g) Any Borrower may cause an L/C Issuer to cease to be an L/C
Issuer for the purposes of this Agreement by delivering a written notice to the
Administrative Agent and such L/C Issuer, provided that at such time, no Letters
of Credit issued by such L/C Issuer or L/C Obligations in respect of such
Letters of Credit shall be outstanding.

                  4.2 Advances Automatic; Participations. (a) In the event that
the Administrative Agent or any Lender shall make any payment on or pursuant to
any L/C Obligation, such payment shall then be deemed automatically to
constitute a Revolving Credit Loan that is a Base Rate Loan (dominated in the
currency of such payment) to the applicable Borrower under subsection 2.3
regardless of whether a Default or Event of Default shall have occurred and be
continuing and notwithstanding any Borrower's failure to satisfy the conditions
precedent set forth in Section 8, and each Lender shall be obligated to pay its
Commitment Percentage thereof in accordance with this Agreement. The failure of
any Lender to make available to the Administrative Agent for the Administrative
Agent's own account its Commitment Percentage of any such Revolving Credit Loan
or payment by the Administrative Agent under or in respect of a Letter of Credit
shall not relieve any other Lender of its obligation hereunder to make available
to the Administrative Agent its Commitment Percentage thereof, but no Lender
shall be responsible for the failure of any other Lender to make available such
other Lender's Commitment Percentage of any such payment.


                                      -43-

<pg$pcn>
                  (b) If the Administrative Agent shall have determined in its
discretion that it is not appropriate for any Borrower to incur Revolving Credit
Loans as contemplated by subsection 4.2(a) because of an Event of Default
described in subsection 12(g) or otherwise or if it shall be illegal or unlawful
for any Lender to be deemed to have assumed a ratable share of the reimbursement
obligations owed to an L/C Issuer, or if the L/C Issuer is a Lender, then (i)
immediately and without further action whatsoever, each Lender shall be deemed
to have irrevocably and unconditionally purchased from the Administrative Agent
(or such L/C Issuer, as the case may be) an undivided interest and participation
equal to such Lender's Commitment Percentage of the L/C Obligations in respect
of all Letters of Credit then outstanding and (ii) thereafter, immediately upon
issuance of any Letter of Credit, each Lender shall be deemed to have
irrevocably and unconditionally purchased from the Administrative Agent (or such
L/C Issuer, as the case may be) an undivided interest and participation equal to
such Lender's Commitment Percentage of the L/C Obligations with respect to such
Letter of Credit on the date of such issuance. Each Lender shall fund its
participation in all payments or disbursements made in respect of the Letters of
Credit in the same manner as provided in this Agreement with respect to
Revolving Credit Loans.

                  4.3 Cash Collateral. (a) If the Borrowers are required to
provide cash collateral for any L/C Obligations pursuant to this Agreement, each
Borrower will pay to the Administrative Agent for the benefit of Lenders cash or
cash equivalents acceptable to the Administrative Agent ("Collateral Cash
Equivalents") in an amount equal to the maximum amount then available to be
drawn under each applicable Letter of Credit outstanding issued for the account
of such Borrower. Such funds or Collateral Cash Equivalents and repayments or
any interest income in respect thereof shall be held by the Administrative Agent
in a cash collateral account (the "Cash Collateral Account") maintained at a
bank or financial institution acceptable to the Administrative Agent and such
funds, repayments and interest income shall be invested in Cash Equivalents to
the extent deemed appropriate by the Administrative Agent. The Cash Collateral
Account shall be in the name of the applicable Borrower and shall be pledged to,
and subject to the control of, the Administrative Agent, for the benefit of the
Administrative Agent, the Collateral Agent and the Lenders, in a manner
satisfactory to the Administrative Agent. Each Borrower hereby pledges and
grants to the Administrative Agent, on its own behalf and on behalf of the
Collateral Agent and the Lenders, a first priority security interest in all such
funds and Collateral Cash Equivalents held in the Cash Collateral Account from
time to time and all proceeds thereof, as security for the payment of all
amounts due in respect of the L/C Obligations and other Obligations (as defined
herein and in the Canadian Credit Agreement), whether or not then due, of such
Borrower. This Agreement shall constitute a security agreement under applicable
law. Each Borrower shall execute and deliver to the 


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Administrative Agent such further documents and instruments as the
Administrative Agent reasonably may request to evidence the creation and
perfection of the security interest in the Cash Collateral Account.

                  (b) If any L/C Obligations, whether or not then due and
payable, shall for any reason be outstanding on the Termination Date or the
Acceleration Date, as the case may be, the Borrowers shall either (i) provide
cash collateral therefor in the manner described above, or (ii) cause all such
Letters of Credit and guaranties thereof to be canceled and returned, or (iii)
deliver a standby letter (or letters) of credit in guaranty of such L/C
Obligations, which standby letter (or letters) of credit shall be of like tenor
and duration as, and in an amount equal to the aggregate maximum amount then
available to be drawn under, the Letters of Credit to which such outstanding L/C
Obligations relate and shall be issued by a Person, and shall be subject to such
terms and conditions, as shall be reasonably satisfactory to the Administrative
Agent in its sole discretion.

                  (c) From time to time after funds are deposited in the Cash
Collateral Account by any Borrower, the Administrative Agent may apply such
funds or Collateral Cash Equivalents and repayments or any interest income in
respect thereof then held in the Cash Collateral Account to the payment of any
amounts, in such order as the Administrative Agent may elect, as shall be or
shall become due and payable by such Borrower to the Lenders with respect to the
L/C Obligations of such Borrower and, upon the satisfaction in full of all L/C
Obligations of such Borrower, to any other Obligations (as defined herein and in
the Canadian Credit Agreement) then due and owing.

                  (d) Neither any Borrower nor any Person claiming on behalf of
or through any Borrower shall have any right to withdraw any of the funds or
Collateral Cash Equivalents held in the Cash Collateral Account, except that
upon the termination of all L/C Obligations and the payment of all amounts
payable by the Borrowers to the Lenders in respect thereof, any funds remaining
in the Cash Collateral Account shall be applied to other Obligations (as defined
herein and in the Canadian Credit Agreement) then due and owing and upon payment
in full of such Obligations, any remaining amount shall be paid to the Borrowers
or as otherwise required by law.

                  4.4 Fees and Expenses. Each Borrower agrees to pay to the
Administrative Agent for the benefit of the Lenders, as compensation to the
Lenders for L/C Obligations incurred by such Borrower hereunder, (a) a letter of
credit commission for the ratable account of the Lenders with respect to each
Commercial Letter of Credit issued for such Borrower's account in an amount
equal to 2.00% per annum times the face amount of such Commercial Letter of
Credit, which fronting fee shall be payable in advance on the date of issuance
of such Commercial Letter of Credit for the number of days until the expiry date
thereof and (b) a letter 


                                      -45-

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of credit commission for the ratable account of the Lenders with respect to each
Standby Letter of Credit issued for such Borrower's account, in arrears, at the
rate of 2.50% per annum of the average daily amount available to be drawn under
such Standby Letter of Credit during the period for which such fee is
calculated, which commission shall be payable on the last day of each March,
June, September and December to occur while such Standby Letter of Credit is
outstanding and upon the expiry of such Standby Letter of Credit. In addition,
each Borrower shall pay to each L/C Issuer, on demand, such normal and customary
fees (including, without limitation, fronting fees), charges and expenses of
such L/C Issuer in respect of the issuance, negotiation, acceptance, amendment,
transfer and payment of each Letter of Credit issued by such L/C Issuer for such
Borrower's account or otherwise payable pursuant to the Application and related
documentation under which such Letter of Credit is issued.

                  4.5 Request for Incurrence of L/C Obligations. The relevant
Borrower shall give the Administrative Agent at least two Business Days prior
written notice requesting the incurrence of any L/C Obligation, specifying the
date such L/C Obligation is to be incurred, identifying the beneficiary and the
Borrower to which such L/C Obligation relates and describing the nature of the
transactions proposed to be supported thereby. The notice shall be accompanied
by the form of the Letter of Credit (which shall be acceptable to the relevant
L/C Issuer) to be guarantied. Notwithstanding anything contained herein to the
contrary, Applications by any Borrower and approvals by the Administrative Agent
may be made and transmitted pursuant to electronic codes and security measures
mutually agreed upon and established by and among such Borrower, the
Administrative Agent and the relevant L/C Issuer. Subject to Section 4.1(a), the
Administrative Agent shall cause the requested Letter of Credit to be issued by
the relevant L/C Issuer on the date specified in such notice, with the original
of the relevant Letter of Credit being delivered to the beneficiary and a copy
thereof being furnished to the relevant Borrower.

                  4.6 Obligations Absolute. The obligation of the Borrowers to
reimburse the Administrative Agent and Lenders for payments made with respect to
any L/C Obligation shall be absolute, unconditional and irrevocable, without
necessity of presentment, demand, protest or other formalities, and the
obligations of each Lender to make payments to the Administrative Agent with
respect to Letters of Credit shall be unconditional and irrevocable. Such
obligations of the Borrowers and the Lenders shall be paid strictly in
accordance with the terms hereof under all circumstances including the following
circumstances:

                         (a) any lack of validity or enforceability of any
         Letter of Credit or this Agreement or the other Loan Documents or any
         other agreement;


                                      -46-

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                  (b) the existence of any claim, set-off, defense or other
         right which any Borrower or any of their respective Affiliates or any
         Lender may at any time have against a beneficiary or any transferee of
         any Letter of Credit (or any Persons or entities for whom any such
         transferee may be acting), the Administrative Agent, any Lender, or any
         other Person, whether in connection with this Agreement, any Letter of
         Credit, the transactions contemplated herein or therein or any
         unrelated transaction (including any underlying transaction between any
         Borrower or any of their respective Affiliates and the beneficiary for
         which any Letter of Credit was procured);

                  (c) any draft, demand, certificate or any other document
         presented under any Letter of Credit proving to be forged, fraudulent,
         invalid or insufficient in any respect or any statement therein being
         untrue or inaccurate in any respect;

                  (d) payment by the Administrative Agent or any L/C Issuer
         under any Letter of Credit or guaranty thereof against presentation of
         a demand, draft or certificate or other document which does not comply
         with the terms of such Letter of Credit or such guaranty;

                  (e) any other circumstance or happening whatsoever, which is
         similar to any of the foregoing; or

                  (f) the fact that a Default or an Event of Default shall have
         occurred and be continuing.

            4.7 Nature of Lenders' Duties. (a) As between the Administrative
Agent and any Lender and the Borrowers, the Borrowers assume all risks of the
acts and omissions of, or misuse of any Letter of Credit by beneficiaries of any
Letter of Credit. In furtherance and not in limitation of the foregoing, to the
fullest extent permitted by law, neither the Administrative Agent nor any Lender
shall be responsible: (i) for the form, validity, sufficiency, accuracy,
genuineness or legal effect of any document issued by any party (other
than the Administrative Agent or such Lender, as the case may be) in connection
with the application for and issuance of any Letter of Credit, even if it should
in fact prove to be in any or all respects invalid, insufficient, inaccurate,
fraudulent or forged; (ii) for the validity or sufficiency of any instrument
transferring or assigning or purporting to transfer or assign any Letter of
Credit or the rights or benefits thereunder or proceeds thereof, in whole or in
part, which may prove to be invalid or ineffective for any reason; (iii) for
failure of the beneficiary of any Letter of Credit to comply fully with
conditions required in order to demand payment under such Letter of Credit,
provided that, in the case of any payment by the Administrative Agent under any
Letter of Credit or guaranty thereof, the Administrative Agent shall be liable
to the extent such payment 


                                      -47-

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was made solely as a result of its gross negligence or willful misconduct (as
finally determined by a court of competent jurisdiction) in determining that the
demand for payment under such Letter of Credit or guaranty thereof complies on
its face with any applicable requirements for a demand for payment under such
Letter of Credit or guaranty thereof; (iv) for errors, omissions, interruptions
or delays in transmission or delivery of any messages, by mail, cable,
telegraph, telex or otherwise, whether or not they be in cipher (other than to
the extent caused by the gross negligence or willful misconduct of the
Administrative Agent or such Lender, as the case may be); (v) for errors in
interpretation of technical terms based on knowledge or lack of knowledge of any
usage of any particular trade; (vi) for any loss or delay in the transmission or
otherwise of any document required in order to make a payment under any Letter
of Credit or guaranty thereof or of the proceeds thereof (other than to the
extent caused by the gross negligence or willful misconduct of the
Administrative Agent or such Lender, as the case may be); (vii) for the credit
of the proceeds of any drawing under any Letter Credit or guaranty thereof; and
(viii) for any consequences arising from causes beyond the control of the
Administrative Agent or any Lender. None of the above shall affect, impair, or
prevent the vesting of any of the Administrative Agent's or any Lender's rights
or powers hereunder or under this Agreement.

            (b) Nothing contained herein shall be deemed to limit or to expand
any waivers, covenants or indemnities made by the Borrowers in favor of any L/C
Issuer in any letter of credit application, reimbursement agreement or similar
document, instrument or agreement between or among the Borrowers and such L/C
Issuer.

            4.8 Application. To the extent that any provision of any Application
related to any Letter of Credit is inconsistent with the provisions of this
Section 4, the provisions of this Section 4 shall apply.


         SECTION 5. AMOUNT AND TERMS OF SWING LINE SUB-FACILITY

            5.1 Swing Line Commitments. (a) Subject to the terms and conditions
hereof, the Swing Line Lender agrees to make swing line loans (the "Swing Line
Loans") in US Dollars or Canadian Dollars (as the relevant Borrower may from
time to time elect) to each Borrower on any Business Day from time to time
during the Commitment Period in an aggregate principal amount at any one time
outstanding not to exceed in the aggregate for all Swing Line Loans then
outstanding to all Borrowers US$2,000,000 (or the Equivalent Amount thereof);
provided that in no event may the amount of any borrowing of Swing Line
Loans by any Borrower (i) exceed the aggregate Available Commitments of all
Lenders (after giving effect to the use of proceeds thereof) or (ii) cause the
Aggregate Outstanding Extensions of Credit owing by such Borrower 


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to all Lenders to exceed the Borrowing Base then in effect with respect to such
Borrower. Amounts borrowed by a Borrower under this subsection 5.1 may be repaid
and, to but excluding the Termination Date, reborrowed.

            (b) All Swing Line Loans shall be made and maintained as Base Rate
Loans, denominated in either US Dollars or Canadian Dollars and, notwithstanding
the provisions of subsection 6.6(a), 6.6 (c) shall not be entitled to be
converted into Eurodollar Loans or BA Rate Loans; provided that nothing
contained in this subsection 5.1(b) shall prohibit the conversion into
Eurodollar Loans or BA Rate Loans, as the case may be, of any Base Rate Loans
the proceeds of which are utilized to refund Swing Line Loans.

            5.2 Swing Line Loan Note. The Swing Line Loans made by the Swing
Line Lender to a Borrower shall be evidenced by a promissory note of such
Borrower, substantially in the form of Exhibit B-1 (in the case of US Base Rate
Loans) or Exhibit B-2 (in the case of Canadian Prime Rate Loans), with
appropriate insertions as to payor and date (each, a "Swing Line Note" and
collectively, the "Swing Line Notes"), payable to the order of the Swing Line
Lender and representing the obligations of such Borrower to pay the aggregate
unpaid principal amount of the Swing Line Loans, with interest thereon, as
prescribed in subsection . The Swing Line Lender is hereby authorized to record
the date and amount of each Swing Line Loan made by the Swing Line Lender to
such Borrower and the date and amount of each payment or prepayment of principal
thereof, on its books and records maintained for such purpose and such
recordation shall constitute prima facie evidence of the accuracy of the
information so recorded; provided that the failure of the Swing Line Lender to
make such recordation (or any error in recordation) shall not affect the
obligations of such Borrower hereunder or under its Swing Line Note. The Swing
Line Note of each Borrower shall (a) be dated the Original Closing Date, (b) be
stated to mature on the Termination Date and (c) provide for the payment of
interest in accordance with subsection 6.8(b).

            5.3 Procedure for Swing Line Loan Borrowing. A Borrower may borrow
under the Swing Line Commitment during the Commitment Period on any Business
Day; provided that such Borrower shall give the Administrative Agent irrevocable
notice (which notice must be received by the Administrative Agent prior to 11:00
A.M., Toronto time), on the requested borrowing date (which shall be a Business
Day) specifying the amount of each requested Swing Line Loan, which shall be in
a minimum amount of US$200,000 or a multiple of US$100,000 in excess thereof (or
the Equivalent Amounts thereof). Upon receipt of any such notice from a
Borrower, the Administrative Agent shall promptly notify the Swing Line Lender
thereof. The Swing Line Lender will make the amount of its Swing Line Loan
available to the Administrative Agent for the account of the relevant Borrower
at the Canadian Administrative Agent's Account for value prior to 2:00 P.M.,


                                      -49-

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Toronto time, on the Borrowing Date requested by such Borrower. The proceeds of
each Swing Line Loan will then be made immediately available to such Borrower by
the Administrative Agent making a wire transfer of the amount made available to
the Administrative Agent by the Swing Line Lender and in like funds as received
by the Administrative Agent, to such Borrower's account listed on Schedule IX or
such other account as may be notified by the Borrower to the Administrative
Agent from time to time in writing.

            5.4 Refunding of Swing Line Loans. (a) The Administrative Agent, at
any time in its sole and absolute discretion, may (or, upon the request of the
Swing Line Lender, shall) on behalf of the relevant Borrower (which hereby
irrevocably directs the Administrative Agent to act on its behalf) request that
each Lender make a Revolving Credit Loan in an amount equal to such Lender's
Commitment Percentage of the then outstanding principal amount of Swing Line
Loans (the "Refunded Swing Line Loans") owing by such Borrower on the date such
notice is given (regardless of whether the Refunded Swing Line Loans comply with
the minimum borrowing provisions of subsection 2.3); provided that, at any time
as there shall be a Swing Line Loan of any Borrower outstanding for more than
seven Business Days, the Administrative Agent shall, on the eighth Business Day
after the making of such Swing Line Loan, request (on behalf of such Borrower,
which hereby irrevocably directs the Administrative Agent to act on its behalf)
that each Lender make a Revolving Credit Loan to such Borrower in an amount
equal to such Lender's Commitment Percentage of the principal amount of such
outstanding Swing Line Loan (regardless of whether Refunded Swing Line Loans
comply with the minimum borrowing provisions of subsection 2.3). In the event
that the Swing Line Lender makes its request for refunding of the Swing Line
Loans, each Lender shall make the proceeds of its Revolving Credit Loan
available to the Administrative Agent, for the benefit of the Swing Line Lender,
at the Canadian Administrative Agent's Account for value prior to 11:00 A.M.,
Toronto time, on the first Business Day following such request (or, if such
request is made prior to 10:00 A.M., Toronto time, on any date, then the
proceeds of such Revolving Credit Loans shall instead be so made available to
the Administrative Agent prior to 2:00 P.M., Toronto time, on the date of such
request); provided, however, that in the event that any of the events described
in Section (i) or (ii) shall have occurred and be continuing, the Lenders shall
not make such Revolving Credit Loans and the provisions of subsection 5.4 (b)
shall apply.

            (b) If, prior to the making of a Revolving Credit Loan pursuant to
subsection , one of the events described in Section 12(g)(i) or (ii) shall have
occurred and be continuing, each Lender will, on the date such Revolving Credit
Loan was to have been made, purchase from the Swing Line Lender an undivided
participating interest in the Swing Line Loan to be refunded in an amount equal
to its Commitment Percentage of such Swing Line 


                                      -50-

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Loan to be refunded. Each Lender will immediately transfer to the Administrative
Agent, for value, the amount of its participation.

         (c) Whenever, at any time after the Swing Line Lender has received from
any Lender such Lender's participating interest in a Swing Line Loan to be
refunded pursuant to subsection 5.4(b), the Swing Line Lender receives any
payment on account thereof, the Swing Line Lender will distribute to such Lender
its participating interest in such amount (appropriately adjusted, in the case
of interest payments, to reflect the period of time during which such Lender's
participating interest was outstanding and funded) in like funds as received;
provided, however, that in the event that such payment received by the Swing
Line Lender is required to be returned, such Lender will return to the Swing
Line Lender any portion thereof previously distributed by the Swing Line Lender
to it in like funds as such payment is required to be returned by the Swing Line
Lender.

         5.5 Unconditional Obligation to Refund Swing Line Loans. Each Lender's
obligation to make Revolving Credit Loans and to purchase participating
interests in accordance with subsections 5.4(a) and 5.4(b) above shall be
absolute and unconditional and shall not be affected by any circumstance,
including, without limitation, (i) any set-off, counterclaim, recoupment,
defense or other right which such Lender may have against the Swing Line Lender,
any Borrower or any other Person for any reason whatsoever; (ii) the occurrence
or continuance of any Default or Event of Default; (iii) any adverse change in
the condition (financial or otherwise) of any Borrower or any other Person; (iv)
any breach of this Agreement by any Borrower or any other Person; (v) any
inability of any Borrower to satisfy the conditions precedent to borrowing set
forth in this Agreement on the date upon which such Revolving Credit Loan is to
be made or participating interest is to be purchased or (vi) any other
circumstance, happening or event whatsoever, whether or not similar to any of
the foregoing. If any Lender does not make available to the Administrative Agent
the amount required pursuant to subsection 5.4(a) or 5.4(b) above, as the case
may be, the Administrative Agent shall be entitled to recover such amount on
demand from such Lender, together with interest thereon for each day from the
date of non-payment until such amount is paid in full at the US Federal Funds
Effective Rate for the first two Business Days and at the US Base Rate (in the
case of Swing Line Loans denominated in US Dollars) or the Canadian Prime Rate
(in the case of Swing Line Loans denominated in Canadian Dollars) thereafter.

         5.6 Use of Proceeds of Swing Line Loans. The proceeds of Swing Line
Loans hereunder shall be used by the Borrowers for any purpose for which the
proceeds of Revolving Credit Loans may be used.


                                      -51-

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      SECTION 6.        PROVISIONS RELATING TO CERTAIN EXTENSIONS OF CREDIT;
                        FEES AND PAYMENTS

            6.1 Commitment Fee. The Borrowers agree to pay to the Administrative
Agent, for the account of each Lender, a commitment fee for the period from and
including the first day of the Commitment Period to the Termination Date,
computed at the rate of 0.375% per annum on the average daily amount of the
Available Commitment of such Lender during the period for which payment is made
(computed (a) as to all Lenders other than the Swing Line Lender, without
reduction for such Lender's Commitment Percentage of any Swing Line Loans
outstanding during such period and (b) as to the Swing Line Lender, with
reduction for the full amount of the Swing Line Loans outstanding during such
period), payable quarterly in arrears on the last day of each March, June,
September and December and on the Termination Date or such earlier date as the
Commitments shall terminate as provided herein, commencing on the first of such
dates to occur after the Closing Date.

            6.2 Termination or Reduction of Commitments. (a) The Borrowers shall
have the right, upon not less than five Business Days' notice to the
Administrative Agent, to terminate (but not reduce) the Commitments, so long as,
on the date of such termination, the Borrowers shall have complied with
subsection 6.4(b). Notwithstanding anything to the contrary contained herein, in
the event that the Aggregate Commitment is for any reason reduced (whether
voluntarily or otherwise) to an amount less than US$20,000,000 (or the
Equivalent Amount thereof), the Commitments immediately shall terminate.

            6.3 Optional Prepayments. (a) Each Borrower may at any time and from
time to time prepay the Loans that are not Swing Line Loans (subject to the
provisions of subsection 6.16, in the case of Eurodollar Loans or BA Rate Loans)
in whole or in part, without premium or penalty, upon at least one Business
Day's irrevocable notice to the Administrative Agent (or, in the case of Base
Rate Loans, on same day notice to the extent that such notice is delivered to
the Administrative Agent prior to 10:00 A.M., Toronto time, on the date of such
prepayment) specifying the date and amount of prepayment. Upon receipt of any
such notice, the Administrative Agent shall promptly notify each Lender thereof.
If any such notice is given by a Borrower, the amount specified in such notice
shall be due and payable from the Borrower which has delivered such notice on
the date specified therein, no later than 2:00 P.M., Toronto time, together with
any amounts payable pursuant to subsection 6.16. Partial prepayments shall be in
an aggregate principal amount equal to the minimum amounts permitted to be
borrowed as set forth in subsection 2.3.

            (b) Each Borrower may at any time and from time to time prepay, in
whole or in part and without premium or penalty, any Swing Line Loans then owing
by it on any Business Day;


                                      -52-

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provided that such Borrower has given irrevocable notice to the Administrative
Agent not later than 1:00 P.M., Toronto time, on the date of such prepayment.

            6.4 Mandatory Prepayments. (a) In the event that the Aggregate
Outstanding Extensions of Credit owing by any Borrower to the Lenders at any
date exceed the Borrowing Base then in effect with respect to such Borrower,
such Borrower shall immediately prepay the Aggregate Outstanding Extensions of
Credit owing by it to the Lenders by the amount of such excess, with such
prepayment being applied, first, to its then outstanding Swing Line Loans,
second, to its then outstanding Revolving Credit Loans, and, third, to cash
collateralize its then outstanding L/C Obligations by the amount of such excess.

         (b) In the event that the Aggregate Outstanding Extensions of Credit
owing by all Borrowers to the Lenders exceeds the Maximum Available Credit, the
Borrowers shall immediately prepay the Aggregate Outstanding Extensions of
Credit of the Lenders by the amount of such excess, with such prepayment being
applied, first, to the then outstanding Swing Line Loans, second, to the then
outstanding Revolving Credit Loans, and, third, to cash collateralize the then
outstanding L/C Obligations by the amount of such excess.

            (c) The Administrative Agent shall prepay the Loans with the
proceeds of amounts received by it pursuant to the Lock Box Agreements, with
such prepayments to be applied in accordance with the provisions of the
applicable Security Agreements and Lock Box Agreements.

            (d) Notwithstanding anything to the contrary contained in this
Agreement, in the event that a Borrower would be required to pay amounts
pursuant to subsection 6.16 as a direct result of any prepayment made pursuant
to this subsection 6.4, then either:

            (i) in the case of Eurodollar Loans or BA Rate Loans, the amount so
      prepaid may be immediately reborrowed by any other Borrower (subject to
      satisfaction by such other Borrower of all conditions to borrowing set
      forth in this Agreement) at the Eurodollar Rate or the BA Loan Rate, as
      the case may be, which was in effect for the amounts so prepaid plus 2.75%
      (and with an Interest Period ending on the date upon which the Interest
      Period for the amounts so prepaid was scheduled to end), and no Lender
      shall be entitled to amounts which otherwise would be owing pursuant to
      said subsection 6.16; or

            (ii) during such time as no Event of Default has occurred and is
      continuing or otherwise with the consent of the Majority Lenders, such
      Borrower may deposit the amount of such payment in a cash collateral
      account maintained by the Administrative Agent (for the benefit of the
      holders of the Obligations) until the earlier of (A) the last day of


                                      -53-

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         the applicable Interest Period, and (B) unless the Majority Lenders
         shall otherwise consent, the date of the occurrence of an Event of
         Default, on which earlier date such prepayment shall be made. Each
         Borrower hereby grants to the Administrative Agent a first priority
         security interest in all amounts from time to time on deposit in the
         cash collateral account maintained with respect to it, as security for
         the payment of the Obligations of such Borrower, and expressly waives
         all rights (which rights each Borrower hereby acknowledges and agrees
         are vested exclusively in the Administrative Agent) to exercise
         dominion or control over any such amounts. Amounts from time to time on
         deposit in such a cash collateral account shall be invested by the
         Administrative Agent in such Cash Equivalents as the relevant Borrower
         may from time to time specify.

            6.5  [INTENTIONALLY OMITTED]

            6.6 Conversion and Continuation Options. (a) Each Borrower may elect
from time to time to convert Eurodollar Loans owing by it to US Base Rate Loans,
by giving the Administrative Agent at least three Business Days' prior
irrevocable notice of such election, provided that any such conversion of
Eurodollar Loans may only be made on the last day of an Interest Period with
respect thereto. Each Borrower may elect from time to time to convert US Base
Rate Loans owing by it to Eurodollar Loans by giving the Administrative Agent at
least three Business Days' prior irrevocable notice of such election. Any such
notice of conversion to Eurodollar Loans shall specify the length of the initial
Interest Period or Interest Periods therefor. Upon receipt of any such notice
the Administrative Agent shall promptly notify each Lender thereof. All or any
part of outstanding Eurodollar Loans and US Base Rate Loans may be converted as
provided herein, provided that (i) no Loan may be converted into a Eurodollar
Loan when any Event of Default has occurred and is continuing and the
Administrative Agent has or the Majority Lenders have determined not to permit
such a conversion in its or their sole discretion and (ii) no Loan may be
converted into a Eurodollar Loan after the date that is one month prior to the
Termination Date.

            (b) Any Eurodollar Loans may be continued as such upon the
expiration of the then current Interest Period with respect thereto by the
relevant Borrower giving notice to the Administrative Agent, in accordance with
the applicable provisions of the term "Interest Period" set forth in subsection
1.1, of the length of the next Interest Period to be applicable to such Loans,
provided that no Eurodollar Loan may be continued as such (i) when any Event of
Default has occurred and is continuing and the Administrative Agent has or the
Majority Lenders have determined that such a continuation is not appropriate or
(ii) after the date that is one month prior to the Termination Date and
provided, further, that if the relevant


                                      -54-

<pg$pcn>
Borrower shall fail to give any required notice as described above in this
subsection 6.6(b) or if such continuation is not permitted pursuant to the
preceding proviso such Loans shall be automatically converted to US Base Rate
Loans on the last day of such then expiring Interest Period.

            (c) Each Borrower may elect from time to time to convert BA Rate
Loans owing by it to Canadian Prime Rate Loans, by giving the Administrative
Agent at least three Business Days' prior irrevocable notice of such election,
provided that any such conversion of BA Rate Loans may only be made on the last
day of an Interest Period with respect thereto. Each Borrower may elect from
time to time to convert Canadian Prime Rate Loans owing by it to BA Rate Loans
by giving the Administrative Agent at least three Business Days' prior
irrevocable notice of such election. Any such notice of conversion to BA Rate
Loans shall specify the length of the initial Interest Period or Interest
Periods therefor. Upon receipt of any such notice the Administrative Agent shall
promptly notify each Lender thereof. All or any part of outstanding BA Rate
Loans and Canadian Prime Rate Loans may be converted as provided herein,
provided that (i) no Loan may be converted into a BA Rate Loan when any Event of
Default has occurred and is continuing and the Administrative Agent has or the
Majority Lenders have determined not to permit such a conversion in its or their
sole discretion and (ii) no Loan may be converted into a BA Rate Loan after the
date that is one month prior to the Termination Date.

         (d) Any BA Rate Loans may be continued as such upon the expiration of
the then current Interest Period with respect thereto by the relevant Borrower
giving notice to the Administrative Agent, in accordance with the applicable
provisions of the term "Interest Period" set forth in subsection , of the length
of the next Interest Period to be applicable to such Loans, provided that no BA
Rate Loans may be continued as such (i) when any Event of Default has occurred
and is continuing and the Administrative Agent has or the Majority Lenders have
determined that such a continuation is not appropriate or (ii) after the date
that is one month prior to the Termination Date and provided, further, that if
the relevant Borrower shall fail to give any required notice as described above
in this subsection 6.6(d) or if such continuation is not permitted pursuant to
the preceding proviso such Loans shall be automatically converted to Canadian
Prime Rate Loans on the last day of such then expiring Interest Period.

         6.7 Minimum Amounts of Tranches. All borrowings, prepayments,
conversions and continuations of Loans hereunder and all selections of Interest
Periods hereunder shall be in such amounts and be made pursuant to such
elections so that, after giving effect thereto, (a) the aggregate principal
amount of the Eurodollar Loans or BA Rate Loans, as the case may be, comprising
each Tranche shall be equal to US$4,000,000 or C$2,000,000, respectively, or a
whole multiple of US$100,000 or C$100,000, 


                                      -55-

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respectively, in excess thereof, (b) there shall not be more than four Tranches
of Eurodollar Loans or four Tranches of BA Rate Loans, as the case may be, at
any one time outstanding from all Borrowers in the aggregate.

            6.8 Interest Rates and Payment Dates. (a) Each Eurodollar Loan and
each BA Rate Loan shall bear interest for each day during each Interest Period
with respect thereto at a rate per annum equal to the Eurodollar Rate or the BA
Loan Rate, as the case may be, determined for such day plus 2.75%.

            (b) Each Base Rate Loan (including, without limitation, each Swing
Line Loan) shall bear interest for each day at a rate per annum equal to the US
Base Rate (in the case of Base Rate Loans denominated in US Dollars) or the
Canadian Prime Rate (in the case of Base Rate Loans denominated in Canadian
Dollars) plus, in either case, 1.50%.

            (c) If all or a portion of (i) the principal amount of any Loan is
not paid when such amount becomes due (whether at the stated maturity, by
acceleration or otherwise) or (ii) any interest payable thereon, any commitment
fee or any fee or commission relating to any Letter of Credit hereunder is not
paid within three days after such interest, commitment fee or other fee or
commission becomes due hereunder (whether at the stated maturity, by
acceleration or otherwise), such overdue amount shall bear interest at a rate
per annum equal to:

                  (x) in the case of overdue principal, the rate otherwise
         applicable thereto plus 2.00% per annum; or

                  (y) in the case of overdue interest, commitment fee or any fee
         or commission relating to any Letter of Credit hereunder, the amount
         equal to the US Base Rate (in the case of amounts denominated in US
         Dollars) or the Canadian Prime Rate (otherwise) plus 2.00% per annum;

in each case from the date upon which such amount becomes due hereunder to the
date upon which such amount is paid in full (as well after as before judgment).

            (d) Interest shall be payable in arrears on each Interest Payment
Date, provided that interest accruing pursuant to subsection shall be payable
from time to time on demand.

            (e) (i) If any provision of this Agreement would oblige any Loan
Party to make any payment of interest or other amount payable to any Lender in
an amount or calculated at a rate which would be prohibited by law or would
result in a receipt by such Lender of interest at a criminal rate (as such terms
are construed under the Criminal Code (Canada)), then notwithstanding such
provision, such amount or rate shall be deemed to have been adjusted with
retroactive effect to the maximum amount or rate of 


                                      -56-

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interest, as the case may be, as would not be so prohibited by law or so result
in a receipt by such Lender of interest at a criminal rate, such adjustment to
be effected, to the extent necessary, as follows:

         (x)      firstly, by reducing the amount or rates of interest required
                  to be paid under this Section 6.8; and

         (y)      thereafter, by reducing any fees, commissions, premiums and
                  other amounts which would constitute interest for purposes of
                  Section 347 of the Criminal Code (Canada).

            (ii) If, notwithstanding the provisions of clause (i) of this
      Section 6.8(e), and after giving effect to all adjustments contemplated
      thereby, any Lender shall have received an amount in excess of the maximum
      permitted by such clause, then the applicable Loan Party shall be
      entitled, by notice in writing to such Lender, to obtain reimbursement
      from such Lender of an amount equal to such excess, and pending such
      reimbursement, such amount shall be deemed to be an amount payable by such
      Lender to such Loan Party.

            (iii) Any amount or rate of interest referred to in this Section 6.8
      shall be determined in accordance with generally accepted actuarial
      practices and principles as an effective annual rate of interest over the
      term of any Loan on the assumption that any charges, fees or expenses that
      fall within the meaning of "interest" (as defined in the Criminal Code
      (Canada)) shall, if they relate to a specific period of time, be prorated
      over that period of time and otherwise be prorated over the period from
      the Closing Date to the Termination Date and, in the event of dispute, a
      certificate of a Fellow of the Canadian Institute of Actuaries appointed
      by the Administrative Agent shall be conclusive for the purposes of such
      determination.

            6.9 Computation of Interest and Fees. (a) All interest payable on
account of Eurodollar Loans and all fees with respect to Letters of Credit
hereunder shall be calculated on the basis of a 360-day year for the actual days
elapsed and all other interest and fees payable hereunder shall be calculated on
the basis of a 365- (or 366- as the case may be) day year for the actual days
elapsed. The Administrative Agent shall as soon as practicable notify the
relevant Borrower and the Lenders of each determination of a Eurodollar Rate or
a BA Loan Rate, as the case may be. Any change in the interest rate on a Loan
resulting from a change in the US Base Rate, the Canadian Prime Rate or the
Eurocurrency Reserve Requirements shall become effective as of the opening of
business on the day upon which such change becomes effective. The Administrative
Agent shall as soon as practicable notify the relevant Borrowers and the Lenders
of the effective 


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date and the amount of each such change in interest rate. In the absence of
specific instructions from such Borrower, all fees and expenses payable by the
Borrowers hereunder shall be allocated among the Borrowers in such proportions
as the Administrative Agent shall from time to time determine.

         (b) For purposes of the Interest Act (Canada), (i) whenever any
interest or fee under this Agreement is calculated using a rate based on a year
of 360 days such rate determined pursuant to such calculation, when expressed as
an annual rate, is equivalent to (x) the applicable rate based on a year of 360
days (y) multiplied by the actual number of days in the calendar year in which
the period for which such interest or fee is payable (or compounded) ends, and
(z) divided by 360 (ii) the principle of deemed reinvestment of interest does
not apply to any interest calculation under this Agreement; and (iii) the rates
of interest stipulated in this Agreement are intended to be nominal rates and
not effective rates or yields.

         (c) Each determination of an interest rate by the Administrative Agent
pursuant to any provision of this Agreement shall be conclusive and binding on
the Borrowers and the Lenders in the absence of manifest error. The
Administrative Agent shall, at the request of a Borrower, deliver to such
Borrower a statement showing the quotations used by the Administrative Agent in
determining any interest rate pursuant to subsection 6.8.

         (d) Principal, interest (including, without limitation, interest on
overdue amounts), reimbursement obligations [and other fees] on Loans and
Letters of Credit denominated in Canadian Dollars shall be payable in Canadian
Dollars, with all other amounts payable under this Agreement, the Notes and the
other Loan Documents to the Administrative Agent, the Collateral Agent and the
Lenders being payable in US Dollars.

         6.10 Inability to Determine Interest Rate. If prior to the first day of
any Interest Period:

                  (a) the Administrative Agent shall have determined (which
         determination shall be conclusive and binding upon the Borrowers) that,
         by reason of circumstances affecting the relevant market, adequate and
         reasonable means do not exist for ascertaining the Eurodollar Rate or
         the BA Loan Rate for such Interest Period, or

                  (b) the Administrative Agent shall have received notice from
         the Majority Lenders that the Eurodollar Rate or the BA Loan Rate
         determined or to be determined for such Interest Period will not
         adequately and fairly reflect the cost to such Lenders (as conclusively
         certified by such Lenders) of making or maintaining their affected
         Eurodollar Loans or BA Rate Loans during such Interest Period,


                                      -58-

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the Administrative Agent shall give telecopy or telephonic notice thereof to the
Borrowers and the Lenders as soon as practicable thereafter. If such notice is
given (x) any Eurodollar Loans or BA Rate Loans, as the case may be, requested
to be made on the first day of such Interest Period shall be made as US Base
Rate Loans or Canadian Prime Rate Loans, as the case may be, (y) any Loans that
were to have been converted on the first day of such Interest Period to
Eurodollar Loans or BA Rate Loans, as the case may be, shall be converted to or
continued as US Base Rate Loans or Canadian Prime Rate Loans, as the case may
be, and (z) any outstanding Eurodollar Loans or BA Rate Loans, as the case may
be, shall be converted, on the first day of such Interest Period, to US Base
Rate Loans or Canadian Prime Rate Loans, as the case may be. Until such notice
has been withdrawn by the Administrative Agent, no further Eurodollar Loans or
BA Rate Loans, as the case may be, shall be made or continued as such, nor shall
any Borrower have the right to convert Loans to Eurodollar Loans or BA Rate
Loans, as the case may be.

            6.11 Pro Rata Treatment and Payments. (a) Each borrowing (other than
of Swing Line Loans) by a Borrower from the Lenders hereunder, any conversion or
continuation pursuant to subsection and any reduction of the Commitments of the
Lenders shall be made pro rata according to the respective Commitment
Percentages of the Lenders. Each payment by a Borrower on account of any
commitment fee hereunder shall be made pro rata according to the respective
Commitment Percentages of all Lenders, except that the commitment fee payable to
the Swing Line Lender shall be calculated in accordance with the provisions of
subsection 6.1. Each payment (including each prepayment) by a Borrower on
account of principal of and interest on the Loans (other than Swing Line Loans)
shall be made pro rata according to the respective outstanding principal amounts
of the Loans then held by the Lenders. All payments (including prepayments) to
be made by a Borrower hereunder and under the Notes, whether on account of
principal, interest, fees or otherwise, shall be made without set off or
counterclaim and shall be made for value prior to 1:00 P.M., Toronto time, on
the due date thereof to the Administrative Agent, for the account of the Lenders
(or Swing Line Lender, as the case may be), to the Canadian Administrative
Agent's Account and in the currency specified in subsection 6.9. The
Administrative Agent shall distribute such payments to the Lenders (or to the
Swing Line Lender, as the case may be) promptly upon receipt in like funds as
received. If any payment hereunder (other than payments on the Eurodollar Loans
and the BA Rate Loans) becomes due and payable on a day other than a Business
Day, such payment shall be extended to the next succeeding Business Day, and,
with respect to payments of principal, interest thereon shall be payable at the
then applicable rate during such extension. If any payment on a Eurodollar Loan
or a BA Rate Loan becomes due and payable on a day other than a Business Day,
the maturity thereof shall be extended to the next succeeding Business Day
unless the result of such extension would be to extend such payment into
another  

                                      -59-

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calendar month, in which event such payment shall be made on the immediately
preceding Business Day.

         (b) Unless the Administrative Agent shall have been notified in writing
by any Lender prior to a borrowing that such Lender will not make the amount
that would constitute its Commitment Percentage of such borrowing available to
the Administrative Agent, the Administrative Agent may assume that such Lender
is making such amount available to the Administrative Agent, and the
Administrative Agent may, in reliance upon such assumption, make available to
the relevant Borrower a corresponding amount. If such amount is not made
available to the Administrative Agent by the required time on the Borrowing Date
therefor, such Lender shall pay to the Administrative Agent, on demand, such
amount with interest thereon at a rate equal to the Administrative Agent's
reasonable estimate of its daily average cost of funds for the period until such
Lender makes such amount immediately available to the Administrative Agent. A
certificate of the Administrative Agent submitted to any Lender with respect to
any amounts owing under this subsection 6.11(b) shall be conclusive in the
absence of manifest error. If such Lender's Commitment Percentage of such
borrowing is not made available to the Administrative Agent by such Lender
within three Business Days of such Borrowing Date, the Administrative Agent
shall also be entitled to recover such amount with interest thereon at the rate
per annum applicable to Base Rate Loans hereunder, on demand, from such Lender.
Notwithstanding anything to the contrary contained herein, the failure of any
Lender to make any Loan to be made by it hereunder on any Borrowing Date shall
not relieve any other Lender of its obligation to make its Loan on such
Borrowing Date, but no Lender shall be responsible for the failure of any other
Lender to make the Loan to be made by such other Lender on such Borrowing Date.

         6.12 Illegality. Notwithstanding any other provision herein, if,
subsequent to the Closing Date, the adoption of or any change in any Requirement
of Law or in the interpretation or application thereof shall make it unlawful
for any Lender to make or maintain Eurodollar Loans or BA Rate Loans, as the
case may be, as contemplated by this Agreement, (a) the commitment of such
Lender hereunder to make Eurodollar Loans or BA Rate Loans, as the case may be,
continue Eurodollar Loans or BA Rate Loans, as the case may be, as such and
convert Base Rate Loans to Eurodollar Loans or BA Rate Loans, as the case may
be, shall forthwith be canceled and (b) such Lender's Loans then outstanding as
Eurodollar Loans or BA Rate Loans, as the case may be, if any, shall be
converted automatically to US Base Rate Loans or Canadian Prime Rate Loans,
respectively, on the respective last days of the then current Interest Periods
with respect to such Loans or within such earlier period as required by law. If
any such conversion of a Eurodollar Loan or a BA Rate Loan occurs on a day which
is not the last day of the then current Interest Period with respect thereto,
each Borrower shall 



                                      -60-

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pay to such Lender such amounts, if any, as may be required pursuant to
subsection 6.16.

            6.13 Requirements of Law. (a) If the adoption of, or any change in,
any Requirement of Law or in the interpretation or application thereof or
compliance by any Lender (or any corporation controlling any Lender) with any
request or directive (whether or not having the force of law) from any central
bank or other Governmental Authority made subsequent to the Closing Date:

                  (i) shall subject any Lender (or controlling corporation) to
         any tax of any kind whatsoever with respect to this Agreement, any
         Note, any Letter of Credit, any Application or any Eurodollar Loan or
         BA Rate Loan made by it, or change the basis of taxation of payments to
         such Lender (or controlling corporation) in respect thereof (except for
         Taxes covered by subsection and changes in the rate of tax on the
         overall taxable income of such Lender (or controlling corporation) or
         franchise tax, if applicable, in lieu thereof);

                  (ii) shall impose, modify or hold applicable any reserve,
         special deposit, compulsory loan or similar requirement against assets
         held by, deposits or other liabilities in or for the account of,
         advances, loans or other extensions of credit by, or any other
         acquisition of funds by, any office of such Lender (or controlling
         corporation) which is not otherwise included in the determination of
         the Eurodollar Rate or the BA Loan Rate; or

                  (iii) shall impose on such Lender (or controlling corporation)
         any other condition;

and the result of any of the foregoing is to increase the cost to such Lender
(or controlling corporation), by an amount which it deems to be material, of
making, converting into, continuing or maintaining Eurodollar Loans or BA Rate
Loans, as the case may be, or issuing or participating in Letters of Credit or
to reduce any amount receivable hereunder in respect thereof, then, in any such
case, the relevant Borrower shall promptly pay such Lender, upon its demand, any
additional amounts necessary to compensate such Lender (or controlling
corporation) for such additional or increased cost or reduced amount receivable.
If any Lender determines that it is entitled to claim any additional amounts
pursuant to this subsection 6.13, then, promptly following such determination,
it shall notify the relevant Borrower, through the Administrative Agent, of the
event by reason of which it has become so entitled. A certificate as to any
additional amounts payable pursuant to this subsection 6.13 submitted by such
Lender, through the Administrative Agent, to such Borrower shall be conclusive
in the absence of manifest error. This covenant shall survive the termination of
this Agreement and the payment of the Notes and all other amounts payable
hereunder.


                                      -61-

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         (b) If any Lender shall have determined that the adoption of or any
change in any Requirement of Law regarding capital adequacy or in the
interpretation or application thereof or compliance by such Lender or any
corporation controlling such Lender with any request or directive regarding
capital adequacy (whether or not having the force of law) from any Governmental
Authority made subsequent to the Closing Date does or shall have the effect of
reducing the rate of return on such Lender's or such corporation's capital as a
consequence of its obligations hereunder or under any Letter of Credit to a
level below that which such Lender or such corporation could have achieved but
for such change or compliance (taking into consideration such Lender's or such
corporation's policies with respect to capital adequacy) by an amount deemed by
such Lender to be material, then from time to time, after submission by such
Lender to the Borrowers (with a copy to the Administrative Agent) of a written
request therefor, the Borrowers shall pay to such Lender such additional amount
or amounts as will compensate such Lender for such reduction.

         6.14 Taxes. All payments made by the Borrowers and Guarantors under
this Agreement and the Notes shall be made free and clear of, and without
reduction or withholding or liability for or on account of, any present or
future income, stamp or other taxes, levies, imposts, duties, charges, fees,
deductions or withholdings (or penalties or interest in respect of any thereof),
now or hereafter imposed, levied, collected, withheld or assessed by any
Governmental Authority excluding, in the case of the Collateral Agent, the
Administrative Agent and each Lender, (i) net income, capital, doing business,
and franchise and similar taxes imposed upon the Collateral Agent, the
Administrative Agent or such Lender by the laws of the jurisdiction in which the
Collateral Agent, the Administrative Agent or such Lender, as the case may be,
is organized or any political subdivision or taxing authority thereof or
therein, or by any jurisdiction in which any Lender's lending office or
Eurodollar lending office, as the case may be, is located or any political
subdivision or taxing authority thereof or therein and (ii) any tax, levy,
impost, duty, charge, fee, deduction or withholding that would not have been
imposed but for the existence of any present or former connection between the
Collateral Agent, the Administrative Agent or such Lender, as relevant (or
between shareholders of the Collateral Agent, the Administrative Agent or such
Lender), and the Governmental Authority imposing such tax, levy, impost, duty,
charge, fee, deduction or withholding including, without limitation, the
Collateral Agent, the Administrative Agent or such Lender (or shareholders
thereof) being or having been a resident thereof, being or having been present
therein, being or having been engaged in a trade or business therein, or having
had a permanent establishment or fixed place of business therein (but excluding
a connection arising from the Collateral Agent's, the Administrative Agent's or
such Lender's execution or enforcement of or performance of its obligations
under or receipt of payment 


                                      -62-

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under the Loan Documents) (all such non-excluded taxes, levies, imposts, duties,
charges, fees, deductions, withholdings, penalties or interest being hereinafter
called "Taxes"). If any Taxes are required to be withheld from any amounts
payable or paid to the Collateral Agent, the Administrative Agent or any Lender
hereunder, or under the Notes the amounts so payable or paid to the Collateral
Agent, the Administrative Agent or such Lender, as the case may be, shall be
increased by any additional amounts ("Additional Amounts") as may be necessary
to yield thereto (after payment of all Taxes, including Taxes on such Additional
Amounts and any tax arising by reason of the payment of such Additional Amounts,
whether or not such tax constitutes a Tax) interest or any such other amounts
payable hereunder at the rates or in the amounts specified in this Agreement and
in the Notes on a net after-tax basis equal to the amount of such interest or
other amounts that the Collateral Agent, Administrative Agent or Lender would
have received if no such Taxes had been withheld. Whenever any Taxes are payable
by any Borrower or Guarantor, as promptly as possible thereafter, such Borrower
or Guarantor shall send to the Administrative Agent for its own account or for
the account of the Collateral Agent or such Lender, as the case may be, a
certified copy of an original official receipt received by such Borrower or
Guarantor showing payment thereof. If any Borrower or Guarantor fails to pay any
Taxes when due to the appropriate taxing authority or fails to remit to the
Administrative Agent any payments due under this subsection 6.14 or the required
receipts or other required documentary evidence, the Borrowers and the
Guarantors shall indemnify the Collateral Agent, the Administrative Agent and
each Lender from any incremental taxes, interest or penalties that may become
payable by the Collateral Agent, the Administrative Agent or any Lender as a
result of any such failure. The agreements in this subsection 6.14 shall survive
the termination of this Agreement and the payment of the Loans and all other
amounts payable hereunder.

         6.15 Replacement of Claimant. If the Collateral Agent, the
Administrative Agent or any Lender shall make any demand upon any Borrower or
Guarantor for payment under subsection 6.12 or 6.13, or shall give any notice
that it is seeking reimbursement under the provisions of subsection 6.14, then
within 90 days after any such demand or notice, such Borrower or Guarantor may
request that the Collateral Agent, the Administrative Agent or such Lender, as
the case may be, assign at par to one or more financial institutions which is
designated by such Borrower or Guarantor all (but not less than all) of its
obligations, its Commitment and the Loans and other amounts owing to it
hereunder and under the US Credit Agreement (including, without limitation, in
the case of the Collateral Agent and the Administrative Agent, its obligations
as a Lender) no later than the date which is the later to occur of 120 days
following the date of such request and the last day of the latest to expire of
the then current Interest Periods applicable to such Loans. In the event of any
such request, the Collateral Agent, the 


                                      -63-

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Administrative Agent or the relevant Lender, as the case may be, shall
consummate such assignment to such financial institution within such time
period; provided that (a) such assignment can be effected in accordance with the
provisions of subsection 14.6(c), (b) the financial institution designated by
such Borrower or Guarantor is ready, willing and able to become an Assignee
hereunder, (c) such financial institution has paid to the Collateral Agent, the
Administrative Agent or such Lender, as the case may be, for value the principal
of and interest accrued to the date of such payment on the Loans made by it
hereunder and all other amounts owed to it hereunder (including, without
limitation, any amounts owing pursuant to subsection 6.16) and has assumed the
obligations of the Collateral Agent, the Administrative Agent or such Lender, as
the case may be, in respect of outstanding Swing Line Loans and L/C Obligations
and (d) such Borrower or Guarantor has paid to the Collateral Agent, the
Administrative Agent or such Lender, as the case may be, the amounts demanded by
it pursuant to subsection 6.12, 6.13 or 6.14, as the case may be. Upon
consummation of such assignment, the assigning Lender shall be released from all
of its obligations hereunder and shall cease to be a Lender, and such Assignee
shall thereafter be a Lender for all purposes hereunder.

         6.16 Indemnity. Each Borrower agrees to indemnify each Lender and to
hold each Lender harmless from any loss or expense which such Lender may sustain
or incur as a consequence of (a) default (other than as a result of the
operation of subsection 6.10) by such Borrower in making a borrowing of,
conversion into or continuation of Eurodollar Loans after such Borrower has
given a notice requesting the same in accordance with the provisions of this
Agreement, (b) default by such Borrower in making any prepayment after such
Borrower has given a notice thereof in accordance with the provisions of this
Agreement or (c) subject to the provisions of subsection 6.14(d), the making of
a prepayment of Eurodollar Loans on a day which is not the last day of an
Interest Period with respect thereto. For the purpose of calculation of all
amounts payable to a Lender under this subsection 6.16, each Lender shall be
deemed to have actually funded its relevant Eurodollar Loan or BA Rate Loans, as
the case may be, through the purchase of a deposit bearing interest at the
Eurodollar Rate or the BA Loan Rate, as the case may be, in an amount equal to
the amount of such Eurodollar Loan or BA Rate Loan, as the case may be, and
having a maturity comparable to the relevant Interest Period and each Lender
shall be deemed to have redeployed such deposits on the date of such default or
prepayment by the sale of such deposits in an amount equal to the amount
defaulted upon or prepaid and having a maturity comparable to the Interest
Period with respect thereto; provided, however, that each Lender may fund and
redeploy each of its Eurodollar Loans or BA Rate Loans, as the case may be, in
any manner which it sees fit, and the foregoing assumption shall be utilized
only for the calculation of amounts payable under this subsection 6.16. Such
indemnification may include any such loss or expense arising from the
reemployment of funds obtained by it 


                                      -64-

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to maintain its Eurodollar Loans or BA Rate Loans, as the case may be, hereunder
or from fees payable to terminate the deposits from which such funds were
obtained (but, in any event, excluding any loss of profits or margin applicable
to such Loans), with such Lender being deemed to have "match funded" its
Eurodollar Loans or BA Rate Loans, as the case may be, hereunder by purchasing a
contract for the deposits from which such funds were obtained on the first day
of the relevant Interest Period. A certificate of the relevant Lender as to the
amounts owing to it pursuant to this subsection 6.16 shall be conclusive in the
absence of manifest error. This covenant shall survive the termination of this
Agreement and the payment of the Notes and all other amounts payable hereunder.

         6.17 Repayment of Obligations. Each Borrower unconditionally agrees to
pay all outstanding Loans made to it together with accrued interest thereon, and
all other Obligations then owing by it, on the Termination Date.

         SECTION 7. REPRESENTATIONS AND WARRANTIES

            In order to induce the Administrative Agent, the Collateral Agent
and the Lenders to enter into this Agreement and to induce the Lenders to make
the Loans, and issue or participate in the Letters of Credit, each Parent
Guarantor and each Borrower hereby represents and warrants to the Administrative
Agent, the Collateral Agent and each Lender that:

            7.1 Financial Condition. (a) The consolidated balance sheets of HCNA
and its Subsidiaries as at March 30, 1996 and the related consolidated
statements of income and of cash flows for the fiscal year ended on such date,
reported on by Coopers & Lybrand, copies of which have heretofore been furnished
to each Lender, are complete and correct in all material respects and present
fairly, in all material respects, the consolidated financial condition of HCNA
and its Subsidiaries as at such date, and the consolidated results of their
operations and their cash flows for the fiscal year then ended. The unaudited
consolidated balance sheets of HCNA and its Subsidiaries as at December 28, 1996
and the related unaudited consolidated statements of income and of cash flows
for the nine-month period ended on such date, certified by a Responsible Officer
of HCNA, copies of which have heretofore been furnished to each Lender, present
fairly, in all material respects, the consolidated financial condition of HCNA
and its Subsidiaries as at such date, and the consolidated results of their
operations and their cash flows for the nine-month period then ended (subject to
normal year-end audit adjustments).

            (b) All such financial statements described in this subsection 7.1,
including the related schedules and notes thereto, have been prepared in
accordance with GAAP applied consistently throughout the periods involved
(except as approved 


                                      -65-

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by such accountants or Responsible Officer of HCNA, and as disclosed therein).
Neither HCNA nor any of its Subsidiaries had, at the date of the most recent
balance sheet referred to above, any material Guarantee Obligation, contingent
liability or liability for taxes, or any long-term lease or unusual forward or
long-term commitment, including, without limitation, any interest rate or
foreign currency swap or exchange transaction, which is not reflected in the
foregoing statements or in the notes thereto. Except for the Sale/Leaseback
Transaction and the ECMC Transaction, during the period from March 30, 1996 to
and including the Closing Date there has been no sale, transfer or other
disposition by HCNA or any of its Subsidiaries of any material part of its
business or property and no purchase or other acquisition of any business or
property (including any capital stock of any other Person) material in relation
to the combined financial condition of NACC, NAMSCO, Inc. and GSL Corporation
and their Subsidiaries at March 30, 1996.

            7.2 No Change. (a) During the period between March 30, 1996 and the
Closing Date, no dividends or other distributions have been declared, paid or
made upon the Capital Stock of HCNA nor has any of the Capital Stock of HCNA
been redeemed, retired, purchased or otherwise acquired for value by HCNA or any
of its Subsidiaries.

            (b) Since March 30, 1996, there has been no development or event
which has had or could reasonably be expected to have a Material Adverse Effect.

            7.3 Corporate Existence; Compliance with Law. Each of HCNA and its
Subsidiaries (a) is duly organized, validly existing and in good standing under
the laws of the jurisdiction of its organization, (b) has the corporate power
and authority, and the legal right, to own and operate its material property, to
lease the material property it operates as lessee and to conduct the business in
which it is currently engaged, (c) is duly qualified (as a foreign corporation
where applicable) and in good standing under the laws of each jurisdiction where
its ownership, lease or operation of property or the conduct of its business
requires such qualification and where the failure to be so qualified (in the
aggregate with all other failures to be so qualified) could not reasonably be
expected to have a Material Adverse Effect and (d) is in compliance with all
Requirements of Law except to the extent that the failure to comply therewith
could not, in the aggregate, reasonably be expected to have a Material Adverse
Effect.

            7.4 Corporate Power; Authorization; Enforceable Obligations. (a)
Each Parent Guarantor has the corporate power and authority, and the legal
right, to make, deliver and perform the Loan Documents to which it is a party
and has taken all necessary corporate action to authorize the execution,
delivery and performance of the Loan Documents to which it is a party. Each
Borrower has the corporate power and authority, and the 


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legal right, to make, deliver and perform the Loan Documents to which it is a
party and to borrow hereunder and has taken all necessary corporate action to
authorize the borrowings on the terms and conditions of this Agreement and the
Notes and to authorize the execution, delivery and performance of the Loan
Documents to which it is a party.

         (b) No consent or authorization of, filing with, notice to or other act
by or in respect of, any Governmental Authority or any other Person is required
to be obtained, made or accomplished by any Parent Guarantor or any Borrower in
connection with the borrowings hereunder or with the execution, delivery or
performance of the Loan Documents to which such Parent Guarantor or Borrower is
a party, other than (i) such consents, authorizations, filings and notices which
have been obtained or made and remain in full force and effect and (ii) at all
times after the Closing Date, such consents, authorizations, filings or notices
the failure of which to be made could not reasonably be expected to have a
Material Adverse Effect.

         (c) This Agreement has been, and each other Loan Document to which it
is a party has been or will be, duly executed and delivered on behalf of each
Parent Guarantor and each Borrower.

         (d) This Agreement constitutes, and each other Loan Document to which
it is a party when executed and delivered will constitute, a legal, valid and
binding obligation of each Parent Guarantor and each Borrower enforceable
against such Parent Guarantor or such Borrower, as the case may be, in
accordance with its terms, except as may be limited by applicable bankruptcy,
insolvency, reorganization, moratorium or similar laws affecting creditors'
rights generally and by general equitable principles (whether by proceedings in
equity or at law).

         7.5 No Legal Bar. The execution, delivery and performance of the Loan
Documents to which it is a party, the borrowings hereunder and the use of the
proceeds thereof will not violate any Requirement of Law applicable to, or
Contractual Obligation of, HCNA or of any of its Subsidiaries and will not
result in, or require, the creation or imposition of any Lien on any of its or
their respective properties or revenues pursuant to any such Requirement of Law
or Contractual Obligation or otherwise, other than any such Liens which are
permitted pursuant to subsection 10.3 of this Agreement or subsection 10.3 of
the US Credit Agreement.

         7.6 No Material Litigation. No litigation, investigation or proceeding
of or before any arbitrator or Governmental Authority is pending or, to the
knowledge of HCNA or any Borrower, threatened by or against HCNA or any of its
Subsidiaries or against any of its or their respective properties or revenues
(a) with respect to any of the Loan Documents or any 


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of the transactions contemplated hereby or thereby, or (b) which could
reasonably be expected to have a Material Adverse Effect.

         7.7 No Default. Neither HCNA nor any of its Subsidiaries is in default
under or with respect to any of its Contractual Obligations in any respect which
could reasonably be expected to have a Material Adverse Effect. No Default or
Event of Default has occurred and is continuing.

         7.8 Ownership of Property; Liens. Each of HCNA and its Subsidiaries has
good record and marketable title in fee simple to, or a valid leasehold interest
in, all its real property, and good title to, or a valid leasehold interest in,
all its other property, except to the extent that the failure to have such title
or leasehold interest could not (in the aggregate with all other such failures)
reasonably be expected to have a Material Adverse Effect. None of such property
is subject to any Lien except as permitted by subsection 10.3 of this Agreement
and subsection 10.3 of the US Credit Agreement. After the Original Closing Date,
Sifto has not granted any Liens covering any Collateral securing obligations of
Sifto in respect of the Sifto Notes.

         7.9 Intellectual Property. HCNA and its Subsidiaries own, or are
licensed to use, all trademarks, tradenames, copyrights, technology, know-how
and processes necessary for the conduct of their businesses as currently
conducted except for those the failure to own or license which could not
reasonably be expected to have a Material Adverse Effect (the "Intellectual
Property"). No claim has been asserted and is pending by any Person challenging
or questioning the use of any such Intellectual Property or the validity or
effectiveness of any such Intellectual Property, nor does HCNA or any of its
Subsidiaries know of any valid basis for any such claim, except such claims
that, in the aggregate, could not reasonably be expected to have a Material
Adverse Effect. The use of such Intellectual Property by HCNA and its
Subsidiaries does not infringe on the rights of any Person, except for such
claims and infringements that, in the aggregate, could not reasonably be
expected to have a Material Adverse Effect.

         7.10 No Burdensome Restrictions. So far as HCNA and its Subsidiaries
can reasonably foresee, no Requirement of Law or Contractual Obligation of HCNA
or any of its Subsidiaries could reasonably be expected to have a Material
Adverse Effect.

         7.11 Taxes. Each of HCNA and its Subsidiaries has filed or caused to be
filed all material tax returns which, to the knowledge of HCNA, are required to
be filed and has paid all taxes shown to be due and payable on said returns or
on any assessments made against it or any of its property and all other material
taxes, fees or other charges imposed on it or any of its property by any
Governmental Authority (other than any such taxes, fees and other charges the
amount or validity of which are 

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currently being contested in good faith by appropriate proceedings and with
respect to which reserves in conformity with GAAP have been provided on the
books of HCNA or its Subsidiaries, as the case may be); no tax Lien (other than
any such Lien permitted by subsection 10.3 of this Agreement or subsection 10.3
of the US Credit Agreement) has been filed, and, to the knowledge of HCNA and
its Subsidiaries, no material claim is being asserted, with respect to any such
tax, fee or other charge.

         7.12 Federal Regulations. No part of the proceeds of any Loans will be
used for "purchasing" or "carrying" any "margin stock" within the respective
meanings of each of the quoted terms under Regulation U of the Board of
Governors of the Federal Reserve System of the United States as now and from
time to time hereafter in effect or for any purpose which violates the
provisions of the Regulations of such Board of Governors. If requested by any
Lender or the Administrative Agent, the Borrowers will furnish to the
Administrative Agent and each Lender a statement to the foregoing effect in
conformity with the requirements of FR Form U-1 referred to in said Regulation
U.

         7.13 ERISA. Neither a Reportable Event nor an "accumulated funding
deficiency" (within the meaning of Section 412 of the Code or Section 302 of
ERISA) has occurred during the five-year period prior to the date on which this
representation is made or deemed made with respect to any US Plan, and each US
Plan has complied in all material respects with the applicable provisions of
ERISA and the Code. No termination of a Single Employer Plan has occurred, and
no Lien in favor of the PBGC or a US Plan has arisen, during such five-year
period. The present value of all accrued benefits under each Single Employer
Plan (based on those assumptions used to fund such Plans) did not, as of the
last annual valuation date prior to the date on which this representation is
made or deemed made, exceed the value of the assets of such US Plan allocable to
such accrued benefits. Neither any Borrower nor any Commonly Controlled Entity
has had a complete or partial withdrawal from any Multiemployer Plan, and
neither any Borrower nor any Commonly Controlled Entity would become subject to
any liability under ERISA if any Borrower or any such Commonly Controlled Entity
were to withdraw completely from all Multiemployer Plans as of the valuation
date most closely preceding the date on which this representation is made or
deemed made. No such Multiemployer Plan is in Reorganization or Insolvent. The
present value (determined using actuarial and other assumptions which are
reasonable in respect of the benefits provided and the employees participating)
of the liability of any Borrower and each Commonly Controlled Entity for post
retirement benefits to be provided to their current and former employees under
US Plans which are welfare benefit plans (as defined in Section 3(1) of ERISA)
does not, in the aggregate, exceed the assets under all such US Plans allocable
to such benefits. Notwithstanding the foregoing, the representations and
warranties contained in this subsection 7.13 shall be deemed to be true and
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when made or deemed made except to the extent that any one or more failures of
such representations and warranties to be true and correct when made or deemed
made could, in the aggregate, reasonably be expected to have a material adverse
effect on the business, operations, property or financial or other condition of
any Borrower and its Subsidiaries taken as a whole.

         7.14 Investment Company Act; Other Regulations. No Borrower is an
"investment company", or a company "controlled" by an "investment company",
within the meaning of the Investment Company Act of 1940, as amended. No
Borrower is subject to regulation under any Federal or provincial statute or
regulation which limits its ability to incur Indebtedness.

         7.15 Subsidiaries; Guarantors. Schedule III sets forth all of the
Subsidiaries of HCNA and each Borrower as of the Closing Date. HCNA and each
Person designated as a Guarantor on Schedule III constitute all of the
Guarantors as of the Closing Date.

         7.16 Environmental Matters. Except to the extent that all such matters,
circumstances, facts and events could not, in the aggregate, subject HCNA and
its Subsidiaries to liabilities in respect of remedial costs, compliance costs,
compensatory damages, punitive damages, fines, penalties or any combination
thereof which could reasonably be expected to result in the payment by HCNA and
its Subsidiaries (after giving effect to the proceeds of any applicable
insurance owing by a carrier who has acknowledged in writing its liability under
the relevant policy and to any applicable indemnities owing to HCNA and its
Subsidiaries from a Person (other than HCNA or any of its Subsidiaries) which is
reasonably likely to honor its indemnity) of an amount in excess of
US$12,500,000 in the aggregate for any fiscal year of HCNA:

            (i) The facilities and properties owned, leased or operated by HCNA
      or any of its Subsidiaries (the "Properties") do not contain, and have not
      previously contained, any Materials of Environmental Concern in amounts or
      concentrations which (A) constitute or constituted a violation of, or (B)
      could reasonably be expected to give rise to liability under, any
      Environmental Law.

            (ii) HCNA, its Subsidiaries and the Properties, and all operations
      at the Properties, are in compliance, and have during the term of
      ownership or lease thereof by HCNA and its Subsidiaries been in compliance
      with all applicable Environmental Laws including, without limiting the
      generality of the foregoing, environmental permits and requirements
      relating to financial assurances or other security, and there is no
      contamination at, under or about the Properties or violation of any
      Environmental Law with respect to the Properties or the business operated
      by HCNA or any of its Subsidiaries (the "Business").



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            (iii) Neither HCNA nor any of its Subsidiaries has received any
      notice of violation, alleged violation, non-compliance, liability or
      potential liability regarding environmental matters or compliance with
      Environmental Laws with regard to any of the Properties or the Business,
      nor does any Parent Guarantor or any Borrower have knowledge or reason to
      believe that any such notice will be received or is being threatened.

            (iv) Materials of Environmental Concern have not been transported or
      disposed of from the Properties in violation of, or in a manner or to a
      location which could reasonably be expected to give rise to liability
      under, any Environmental Law, nor have any Materials of Environmental
      Concern been generated, treated, stored or disposed of at, on or under any
      of the Properties in violation of, or in a manner that could reasonably be
      expected to give rise to liability under, any applicable Environmental
      Law.

            (v) No judicial proceeding or governmental or administrative action
      is pending or, to the knowledge of any Parent Guarantor or any Borrower,
      threatened, under any Environmental Law to which HCNA or any of its
      Subsidiaries is or will be named as a party with respect to the Properties
      or the Business, nor are there any consent decrees or other decrees,
      consent orders, administrative orders or other orders, or other
      administrative or judicial requirements outstanding under any
      Environmental Law with respect to the Properties or the Business.

            (vi) There has been no release or threat of release of Materials of
      Environmental Concern at or from the Properties, or arising from or
      related to the operations of HCNA or any of its Subsidiaries in connection
      with the Properties or otherwise in connection with the Business, in
      violation of or in amounts or in a manner that could reasonably be
      expected to give rise to liability under Environmental Laws.

            7.17 Solvency. On the Closing Date (after giving effect to the
initial extensions of credit to be made hereunder and the use of proceeds of
each thereof, and the payment of all legal and accounting and other fees and
expenses relating hereto and thereto), each Parent Guarantor, each Borrower and
each other Loan Party will be Solvent.

            7.18 Searles Valley Manufacturing Process. NACC has completed Steps
I and II of Phase I of the plan to significantly alter the manufacturing process
at Searles Valley, California in order to reduce the cost of soda ash, improve
the mining of borax and raw carbonate materials and eliminate marginally
profitable potash and sodium borate production operations of the Trona Plant.


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         7.19 Canadian Pension Plans. (a) Except to the extent that any one or
more failures of the following representations and warranties contained in this
subsection 7.19 to be true and correct could not, in the aggregate, reasonably
be expected to have a material adverse effect on the business, operations,
property or financial or other condition of the Sifto Group: (i) each Canadian
Pension Plan is in compliance in all material respects with all applicable
pension benefits and tax laws; (ii) no Canadian Pension Plan has any unfunded
liabilities (either on a "going concern" or on a "winding up" basis and
determined in accordance with all applicable laws and using assumptions and
methods that are appropriate in the circumstances and in accordance with
generally accepted actuarial principles and practices in Canada); (iii) all
contributions (including any special payments to amortize any unfunded
liabilities and employee contributions made by authorized payroll deductions)
required to be made to the appropriate funding agency in accordance with all
applicable laws and the terms of each Canadian Pension Plan have been made in
accordance with all applicable laws and the terms of each Canadian Pension Plan;
(iv) no event has occurred and no condition exists with respect to any Canadian
Pension Plan that has resulted or could result in any Canadian Pension Plan
being ordered or required to be wound up in whole or in part pursuant to any
applicable pension benefits laws or having its registration revoked or refused
for the purposes of any applicable pension benefits or tax laws or being placed
under the administration of any relevant pension benefits regulatory authority
or being required to pay any taxes or penalties under any applicable pension
benefits or tax laws; (v) no order has been made and no notice has been given
pursuant to any applicable pension benefits or tax laws in respect of any
Canadian Pension Plan requiring (or proposing to require) any Person to take or
to refrain from taking any action in respect thereof or that there has (or there
are circumstances that indicate that there has) been a contravention of any such
applicable laws; (vi) no event has occurred and no condition exists which has
resulted or could result in any Borrower being required to pay, repay or refund
any amount (other than contributions required to be made or benefits or expenses
required to be paid in the ordinary course) to or on account of any Canadian
Pension Plan or a current or former member thereof; and (vii) no event has
occurred and no condition exists that has resulted or could result in a payment
being made out of a guarantee fund established under any applicable pension
benefits laws in respect of a Canadian Pension Plan.

         (b) With respect to any pension, retirement or other deferred
compensation plan maintained by a Borrower which is not a Canadian Pension Plan,
all required contributions have been made and there are no unfunded liabilities
in respect of such plans (either on a "going concern" or on a "winding up" basis
and determined in accordance with all applicable laws and using assumptions and
methods that are appropriate in the circumstances and in accordance with
generally accepted actuarial principles and practices in Canada), except to the
extent that all such 


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unfunded liabilities and failures to make required contributions could not, in
the aggregate, reasonably be expected to have a material adverse effect on the
business, operations, property or financial or other condition of the Sifto
Group.

            7.20 No Other Restriction. The payment of dividends and loans
between and among HCNA, the Borrowers, the Affiliate Guarantors and/or Sifto
will not violate any Requirement of Law (other than any state or provincial
corporate law limiting the ability of any corporation incorporated in such
jurisdiction to pay dividends or any bankruptcy, insolvency, reorganization or
similar law) applicable to, or Contractual Obligation (other than those
contained in this Agreement and the other Loan Documents, the US Credit
Agreement and the other Loan Documents (as defined therein) and the
documentation under which the Public Debt is outstanding) of HCNA, the Borrower,
any of the Affiliate Guarantors and/or Sifto.

      SECTION 8.        CONDITIONS PRECEDENT

            8.1 Conditions to Effectiveness. The effectiveness of this Agreement
is subject to the satisfaction on or prior to February 28, 1997 of the following
conditions precedent:

                  (a) Loan Documents, etc. The Administrative Agent and the
         Collateral Agent shall have received:

                           (i) this Agreement, executed and delivered by a duly
                  authorized officer of Sifto and each Parent Guarantor;

                           (ii) the US Credit Agreement, executed and delivered
                  by a duly authorized officer of each Borrower and HCNA and by
                  the Lenders (as defined therein);

                           (iii) an assignment agreement, in form and substance
                  satisfactory to the Administrative Agent, pursuant to which
                  the lenders ("Existing Lenders") under the Existing Credit
                  Agreement shall assign their commitments thereunder to the
                  Lenders, and the Lenders shall purchase the outstanding loans
                  under the Existing Credit Agreement from the Existing Lenders;

                           (iv) an amendment to each of the Security Agreement
                  and the Collateral Covenant Agreement, and a replacement Lock
                  Box Agreement, in each case having terms satisfactory to the
                  Administrative Agent and the Lenders, (and each Lender by
                  executing and delivering this Agreement shall be deemed to
                  have consented to such amendment and replacement Lock Box
                  Agreement in the form distributed to such Lender prior to the
                  Closing Date);


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                           (v) an agreement in form and substance satisfactory
                  to the Administrative Agent regarding Loans and Advances and
                  Security Therefor Under Section 426 of the Bank Act dated
                  February 25, 1997 in favor of Bank of America;

                           (vi) Security Under Section 426 on Minerals,
                  Hydrocarbons and Other Property dated February 25, 1997 in
                  favor of Bank of America ;

                           (vii) Notice of Special Security in Minerals dated
                  February 25, 1997 in favor of Bank of America registered in
                  the Land Registry Office for the Registry Division of Huron
                  (No. 22) on February 26, 1997 as instrument number __;

                           (viii) Notice of Intention dated February 24, 1997 in
                  favor of Bank of America;

                           (ix) Application for Credit and Promise to Give
                  Security Under Section 427 of the Bank Act dated February 25,
                  1997 in favor of Bank of America;

                           (x) an agreement in form and substance satisfactory
                  to the Administrative Agent regarding Loans and Advances and
                  Security Therefor dated February 25, 1997 in favor of Bank of
                  America;

                           (xi) General Assignment Under Section 427 of the Bank
                  Act dated February 26, 1997 in favor of Bank of America;

                           (xii) each Borrower shall have executed and delivered
                  a Note to each Lender;

                           (xiii) each Borrower shall have executed and filed a
                  Deed of Hypothec in the province of Quebec; and

                           (xiv) each other document or instrument as may be
                  reasonably requested by the Administrative Agent or the
                  Collateral Agent, including, without limitation, (x) a copy of
                  any debt instrument, security agreement or other material
                  contract to which HCNA or any of its Subsidiaries may be a
                  party, (y) reaffirmations of the Guarantees and (z) any
                  instruments or other documents reasonably deemed necessary by
                  the Collateral Agent to maintain the security interests and
                  other applicable Liens created by the Security Documents.

            (b) Borrowing Base Certificate. The Administrative Agent, the
      Collateral Agent and the Lenders shall have received a Borrowing Base
      Certificate as of February 8, 1997 from Sifto, dated the Closing Date,
      certified by a Responsible Officer of Sifto.


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            (c) Corporate Proceedings of Sifto. The Administrative Agent shall
      have received a copy of the resolutions, in form and substance reasonably
      satisfactory to the Administrative Agent, of the Board of Directors of
      Sifto authorizing (i) the execution, delivery and performance of this
      Agreement, the Notes and the other Loan Documents to which it is a party,
      (ii) the borrowings contemplated hereunder and (iii) the granting by it of
      the Liens created pursuant to the Security Agreements, certified by the
      Secretary or an Assistant Secretary of Sifto as of the Closing Date, which
      certificate shall be in form and substance reasonably satisfactory to the
      Administrative Agent and shall state that the resolutions thereby
      certified have not been amended, modified, revoked or rescinded.

            (d) Sifto Incumbency Certificate. The Administrative Agent shall
      have received, with a conformed copy for each Lender, a certificate of
      Sifto, dated the Closing Date, as to the incumbency and signatures of the
      officers of Sifto executing any Loan Document reasonably satisfactory in
      form and substance to the Administrative Agent, executed by the President
      or any Vice President and the Secretary or any Assistant Secretary of
      Sifto.

            (e) Sifto Officer's Certificate. The Administrative Agent shall have
      received, with a conformed copy for each Lender, a certificate of Sifto,
      dated the Closing Date, as to the collateral locations, head or registered
      office, chief executive office, principal place of business and domicile
      reasonably satisfactory in form and substance to the Administrative Agent,
      executed by the President or any Vice President and the Secretary or any
      Assistant Secretary of Sifto.

            (f) Sifto Officer's Certificate. The Administrative Agent shall have
      received, with a conformed for each Lender, a certificate of Sifto, dated
      the Closing Date, as to the accuracy of the Description of Lands regarding
      Sifto's salt mine and salt mine production facility located in Goderich,
      Ontario which is attached as a Schedule to the security delivered under
      Section 426 of the Bank Act in favor of Bank of America Canada reasonably
      satisfactory in form and substance to the Administrative Agent, executed
      by the President or any Vice President and the Secretary or any Assistant
      Secretary of Sifto.

            (g) Corporate Proceedings of HCNA. The Administrative Agent shall
      have received a copy of the resolutions, in form and substance reasonably
      satisfactory to the Administrative Agent, of the Board of Directors of
      HCNA authorizing the execution, delivery and performance of this
      Agreement, certified by the Secretary or an Assistant Secretary of HCNA as
      of the Closing Date, which certificate shall be in form and substance
      reasonably satisfactory to the Administrative 


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         Agent and shall state that the resolutions thereby certified have not
         been amended, modified, revoked or rescinded.

                  (h) HCNA Incumbency Certificate. The Administrative Agent
         shall have received a certificate of HCNA, dated the Closing Date, as
         to the incumbency and signatures of the officers of HCNA executing any
         Loan Document reasonably satisfactory in form and substance to the
         Administrative Agent, executed by the President or any Vice President
         and the Secretary or any Assistant Secretary of HCNA.

                  (i) Corporate Proceedings of Other Guarantors. The
         Administrative Agent shall have received a copy of the resolutions, in
         form and substance reasonably satisfactory to the Administrative Agent,
         of the Board of Directors of each Guarantor (other than HCNA and Sifto)
         authorizing the execution, delivery and performance of the Loan
         Documents to which it is a party, certified by the Secretary or an
         Assistant Secretary of each such Guarantor as of the Closing Date,
         which certificate shall be in form and substance reasonably
         satisfactory to the Administrative Agent and shall state that the
         resolutions thereby certified have not been amended, modified, revoked
         or rescinded.

                  (j) Guarantor Incumbency Certificates. The Administrative
         Agent shall have received a certificate of each Guarantor (other than
         HCNA and Sifto), dated the Closing Date, as to the incumbency and
         signatures of the officers of such Guarantors executing any Loan
         Document, reasonably satisfactory in form and substance to the
         Administrative Agent, executed by the President or any Vice President
         and the Secretary or any Assistant Secretary of each such Guarantor.

                  (k) Corporate Documents. The Administrative Agent shall have
         received from each Loan Party the certificate of incorporation and
         by-laws of such Loan Party, certified as of the Closing Date as
         complete and correct copies thereof by the Secretary or an Assistant
         Secretary of such Loan Party.

                  (l) Consents, Licenses and Approvals. The Administrative Agent
         shall have received a certificate of a Responsible Officer of Sifto (i)
         attaching copies of all consents, authorizations and filings referred
         to in subsection 7.4(b), and (ii) stating that such consents, licenses
         and filings are in full force and effect, and each such consent,
         authorization and filing shall be in form and substance reasonably
         satisfactory to the Administrative Agent.

                  (m) Fees. The Administrative Agent shall have received all
         fees to be received by it on the Closing Date for its own account and
         for the accounts of the Lenders. 


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         The Collateral Agent shall have received all fees to be received by it
         on the Closing Date for its own account.

                  (n) Legal Opinions. The Administrative Agent shall have
         received, with a counterpart for the Collateral Agent and each Lender,
         the following signed legal opinions:

                           (i) the signed legal opinion of Winthrop, Stimson,
                  Putnam & Roberts, counsel to Sifto and the other Loan Parties,
                  in form and substance reasonably satisfactory to the
                  Collateral Agent and the Administrative Agent;

                           (ii) the signed legal opinion of Fasken Campbell
                  Godfrey, special Canadian counsel to Sifto and the other Loan
                  Parties, in form and substance reasonably satisfactory to the
                  Collateral Agent and the Administrative Agent; and

                           (iii) the signed legal opinion of Martineau Walker,
                  special Quebec counsel to Sifto.

      Each such legal opinion shall cover such other matters incident to the
      transactions contemplated by this Agreement as the Administrative Agent or
      the Collateral Agent may reasonably require.

Each of the documents listed in clauses (c) through (n) above shall be
reasonably satisfactory in form and substance to the Administrative Agent and
the Collateral Agent. Promptly following the Closing Date, the Administrative
Agent shall deliver to each Lender a copy of each of the documents, instruments
and agreements described in this subsection 8.1.


            8.2 Conditions to Each Extension of Credit. Except to the extent
expressly set forth in this Agreement, the agreement of each Lender to make any
extension of credit requested to be made by it to a Borrower on any date
(including, without limitation, its initial extension of credit) is subject to
the satisfaction of the following conditions precedent:

            (a) Representations and Warranties. Each of the representations and
      warranties made by the Loan Parties in or pursuant to the Loan Documents
      (other than the representations and warranties contained in the second
      sentence of Section 7.7) shall be true and correct in all material
      respects on and as of such date as if made on and as of such date.

            (b) No Undisclosed Default or Event of Default. No Default (other
      than Defaults that have been disclosed in writing to the Lenders) or Event
      of Default shall have occurred and be continuing on such date or after
      giving 


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         effect to the extension of credit requested to be made on such date.

                  (c) No Undisclosed Default or Event of Default under US Credit
         Agreement. No Default under (and as defined in) the US Credit Agreement
         (other than any such Defaults that have been disclosed in writing to
         the Lenders) and no Event of Default under (and as defined in) the US
         Credit Agreement shall have occurred and be continuing on such date.

                  (d) No Default. No Default hereunder or under (and as defined
         in) the US Credit Agreement shall have occurred and be continuing on
         such date, in each case as to which the Aggregate Required Lenders have
         delivered to the Administrative Agent a written notice specifying that
         no extensions of credit hereunder may be made as a result thereof.

                  (e) Borrowing Base. After giving effect to the extension of
         credit requested to be made on such date, the Aggregate Outstanding
         Extensions of Credit owing by such Borrower to all Lenders will not
         exceed the Borrowing Base then applicable to such Borrower.

                  (f) Additional Matters. All corporate and other proceedings,
         and all documents, instruments and other legal matters in connection
         with the transactions contemplated by this Agreement and the other Loan
         Documents shall be reasonably satisfactory in form and substance to the
         Administrative Agent and (to the extent that such proceedings,
         documents, instruments and other matters relate to the Collateral or
         the Collateral Agent) the Collateral Agent, and each of the
         Administrative Agent and (with respect to matters relating to the
         Collateral or the Collateral Agent) the Collateral Agent shall have
         received such other documents and legal opinions in respect of any
         aspect or consequence of the transactions contemplated hereby or
         thereby as it shall reasonably request.

Each borrowing by, and Letter of Credit issued, extended or renewed on behalf
of, a Borrower hereunder shall constitute a representation and warranty by the
Borrowers as of the date of such extension of credit that the conditions
contained in subsections 8.2(a), 8.2(b), 8.2(c), 8.2(d) and 8.2(e) have been
satisfied.


      SECTION 9.        AFFIRMATIVE COVENANTS

            HCNA hereby agrees that, so long as the Commitments remain in
effect, any Note or any Letter of Credit remains outstanding and unpaid or any
other amount is owing to any Lender, the Collateral Agent or the Administrative
Agent hereunder, HCNA shall and shall cause each of its Subsidiaries to 


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(except in the case of delivery of financial information, reports and notices,
in which case the Persons described in the relevant provisions of this Section 9
shall):

            9.1  Financial Statements.  Furnish to each Lender:

            (a) as soon as available, but in any event within 90 days after the
      end of each fiscal year of HCNA, a copy of the audited consolidated and
      consolidating balance sheets of HCNA and its consolidated Subsidiaries as
      at the end of such year and the related audited consolidated and
      consolidating statements of income and retained earnings and of cash flows
      for such year, setting forth, in comparative form the figures for the
      previous year, reported on without a "going concern" explanatory paragraph
      or like qualification or exception, or qualification arising out of the
      scope of the audit, by Coopers & Lybrand or other independent certified
      public accountants of nationally recognized standing;

            (b) as soon as available, but in any event not later than 45 days
      after the end of each of the first three quarterly periods of each fiscal
      year of HCNA, the unaudited consolidated and consolidating balance sheets
      of HCNA and its consolidated Subsidiaries as at the end of such quarter
      and the related unaudited consolidated and consolidating statements of
      income and retained earnings and of cash flows of HCNA and its
      consolidated Subsidiaries for such quarter and the portion of the fiscal
      year through the end of such quarter, setting forth in comparative form
      the budget for such period and the figures for the same period of the
      previous year, certified by a Responsible Officer of HCNA as being fairly
      stated in all material respects (subject to normal year-end audit
      adjustments);

            (c) as soon as available, but in any event within 30 days after the
      end of each Interim Accounting Period in a fiscal year of HCNA (other than
      any such Interim Accounting Period which ends on the last day of a fiscal
      quarter of HCNA), the unaudited consolidated and consolidating balance
      sheet, income statement and cash flow statement of HCNA and its
      consolidated Subsidiaries, in each case for such Interim Accounting
      Period, setting forth in comparative form the budget for such period and
      the figures for the same period of the previous year, certified by a
      Responsible Officer of HCNA (subject to normal year-end audit
      adjustments);

            (d) as soon as available (and to the extent not provided pursuant to
      subsection 9.1(b)), but in any event not later than 45 days after the end
      of each of the first three quarterly periods of each fiscal year of each
      Borrower, the unaudited combined balance sheet of such Borrower and its
      Subsidiaries at the end of such quarter and the related unaudited combined
      statements of income and retained earnings and of cash flows of such
      Borrower and its


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         Subsidiaries for such quarter and the portion of the fiscal year
         through the end of such quarter, setting forth in each case in
         comparative form the budget for such period and the figures for the
         same period of the previous year, certified by a Responsible Officer of
         such Borrower as being fairly stated in all material respects (subject
         to normal year-end audit adjustments);

                  (e) as soon as available (and to the extent not provided
         pursuant to subsection 9.1(c)), but in any event within 30 days after
         the end of each Interim Accounting Period in a fiscal year of each
         Borrower (other than any such Interim Accounting Period which ends on
         the last day of a fiscal quarter of such Borrower), unaudited combined
         balance sheets, income statements and cash flow statements of such
         Borrower and its Subsidiaries, in each case for such Interim Accounting
         Period, setting forth in comparative form the budget for such period
         and the figures for the same period of the previous year certified by a
         Responsible Officer of such Borrower (subject to normal year-end audit
         adjustments);

all such financial statements shall be complete and correct in all material
respects and shall be prepared in reasonable detail and in accordance with GAAP
applied consistently throughout the periods reflected therein and with prior
periods (except as approved by such accountants or officer, as the case may be,
and disclosed therein).

         9.2 Certificates; Other Information. Furnish to each Lender (and, in
the case of the Borrowing Base Certificate described in subsection 9.2(e), to
the Collateral Agent and the Administrative Agent):

            (a) concurrently with the delivery of the financial statements
      referred to in subsections 9.1(a) and (b), a letter from the independent
      certified public accountants reporting on such financial statements
      stating that in making the examination necessary therefor no knowledge was
      obtained of any Default or Event of Default, except as specified in such
      letter;

            (b) concurrently with the delivery of the financial statements
      referred to in subsection 9.1, a certificate of a Responsible Officer of
      HCNA (i) stating that, to the best of such Responsible Officer's
      knowledge, HCNA or the relevant Borrower, as the case may be, during such
      period has observed or performed all of its covenants and other
      agreements, and satisfied every condition, contained in this Agreement and
      in the Notes and the other Loan Documents to which it is a party to be
      observed, performed or satisfied by it, and that such Officer has obtained
      no knowledge of any Default or Event of Default except as specified in
      such certificate, (ii) showing in detail the calculations 


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         supporting such statement in respect of subsection 10.1 and (iii) in
         the case of financial statements referred to in subsection 9.1(a) or
         9.1(b), describing in reasonable detail the status of each project
         referred to in the definition of "Major Project Capital Expenditure",
         including the aggregate amount so expended in connection therewith,
         together with the amount remaining to be expended, through the date of
         such financial statements;

                  (c) not later than 45 days following the last day of each
         fiscal year of each Borrower, a copy of the annual business plan of
         such Borrower (prepared on a month- by-month basis) for the next
         succeeding fiscal year (incorporating an operating budget and
         projections of cash flow of its Subsidiaries), accompanied by an
         outline of the assumptions upon which such business plan was based and
         a certificate of a Responsible Officer of such Borrower to the effect
         that such Responsible Officer (i) believes that such business plan is
         based upon reasonable assumptions and (ii) has no reason to believe
         that such business plan is incorrect or misleading in any material
         respect (it being recognized by the Lenders that such projections as to
         future events are not to be viewed as facts and that actual results
         during the period covered may differ from the projected results);

                  (d) within five days after the same are sent, copies of all
         financial statements and reports relating to HCNA and its Subsidiaries
         which HCG sends to its stockholders, and within five days after the
         same are filed, copies of all financial statements and reports which
         HCNA or any of its Subsidiaries may make to, or file with, the SEC, the
         Ontario Securities Commission and any other provincial securities
         commissions in Canada or any successor or analogous Governmental
         Authority;

                  (e) within five Business Days after each of (i) the end of the
         first two weeks of each Interim Accounting Period and (ii) the last day
         of each Interim Accounting Period, each of (x) a Borrowing Base
         Certificate for each Borrower, certified by a Responsible Officer of
         such Borrower as being true and accurate in all material respects as of
         such end of the first two weeks or last day of each Interim Accounting
         Period, as the case may be, and (y) a certificate of a Responsible
         Officer of such Borrower stating that such Borrower was in compliance
         with the Borrowing Base applicable to it during the period subsequent
         to the most recent certification;

                  (f) as soon as available, but in any event prior to May 31 of
         each year, a report prepared by the environmental compliance officer of
         HCNA and its Subsidiaries (i) reviewing all material developments
         relating to compliance by NAMSCO and each Subsidiary thereof and their
         respective tenants with all Environmental Laws applicable to NAMSCO and


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         its Subsidiaries and their respective tenants, including without
         limitation a schedule setting forth any discharges, emissions, or other
         activities of NAMSCO and its Subsidiaries and their respective tenants,
         reported or required to be reported to any government agency, that are
         in excess of any standard in any permits issued pursuant to any
         Environmental Laws, setting forth the amount by which the permit was
         exceeded, and setting forth the number of days the discharges,
         emissions, or other activities occurred in excess of the applicable
         standard; (ii) attaching all material reports from environmental
         consultants working for or hired by NAMSCO or any of its Subsidiaries,
         including without limitation, any annual report of an independent
         environmental consultant to NAMSCO and its Subsidiaries (which
         consultant shall be reasonably acceptable to the Administrative Agent)
         concerning any property or facility owned, operated or leased by, or a
         source of potential liability to, NAMSCO or any of its Subsidiaries;
         (iii) discussing the progress in the implementation of the
         environmental compliance program of NAMSCO and its Subsidiaries (the
         "Environmental Compliance Program") including, but not limited to, a
         facility-by-facility review of, where applicable, ground water
         remediation, installation of equipment to control air emissions or
         water discharges, disposal of equipment containing polychlorinated
         biphenyls, removal of asbestos-containing materials, investigation or
         removal of any equipment in connection with environmental concerns,
         storage containers or other property, remediation of landfills or other
         contaminated land, changes in procedures in the handling or disposal of
         any hazardous materials, and any other significant matters addressed in
         the Environmental Compliance Program; (iv) reporting on the extent to
         which ongoing maintenance and oversight procedures implemented under
         the Environmental Compliance Program were followed by NAMSCO and its
         Subsidiaries during the preceding fiscal year; (v) setting forth any
         changes to the Environmental Compliance Program implemented during the
         preceding fiscal year; (vi) listing all material correspondence with,
         and all notices of any kind received from, any Governmental Authority
         having jurisdiction over any Environmental Laws and attaching copies
         thereof and (vii) reporting on the status of any pending or threatened
         litigation against NAMSCO or any of its Subsidiaries pertaining to any
         Environmental Laws; and (viii) certified as true and correct by such
         environmental compliance officer; and

                  (g) promptly, such additional financial and other information
         as any Lender may from time to time reasonably request.

            9.3 Payment of Obligations. Pay, discharge or otherwise satisfy at
or before maturity or before they become delinquent, as the case may be, all its
material obligations of 


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whatever nature (including, without limitation, all royalty and lease payments
with respect to mines and mining rights), except where the amount or validity
thereof is currently being contested in good faith by appropriate proceedings
and reserves in conformity with GAAP with respect thereto have been provided on
the books of HCNA or its Subsidiaries, as the case may be.

            9.4 Conduct of Business and Maintenance of Existence. Continue to
engage in business of the same general type as now conducted by it and preserve,
renew and keep in full force and effect its corporate existence and take all
reasonable action to maintain all material rights, privileges and franchises
necessary or desirable in the normal conduct of its business except as otherwise
permitted pursuant to subsection 10.7; comply with all Contractual Obligations
and Requirements of Law except to the extent that failure to comply therewith
could not, in the aggregate, be reasonably expected to have a Material Adverse
Effect.

         9.5 Maintenance of Property; Insurance. (a) Keep all property useful
and necessary in its business in good working order and condition, except to the
extent that all failures to do so could not, in the aggregate, reasonably be
expected to have a Material Adverse Effect.

            (b) Except to the extent that such insurance is not available upon
commercially reasonable terms and HCNA and its Subsidiaries have agreed with the
Administrative Agent and the Collateral Agent upon commercially reasonably
alternatives thereto, maintain with financially sound and reputable insurance
companies insurance on all its property in at least such amounts and against at
least such risks (but including in any event public liability, product liability
and business interruption) as were in effect at the time of the insurance review
delivered pursuant to the closing of the Existing Credit Agreement, with the
Collateral Agent named as additional loss payee with respect to proceeds under
any such policies derived from Collateral.

            (c) Furnish to each Lender, no later than fifteen days following
each renewal date with respect thereto and at such other times as the
Administrative Agent or the Collateral Agent reasonably may request, full
information as to the insurance carried (including, without limitation, evidence
reasonably acceptable to the Collateral Agent demonstrating that it has been
named as additional loss payee thereunder with respect to insurance proceeds
derived from Collateral). All such loss payee endorsements shall comply with the
terms and provisions of the Security Agreements and shall, in any event, provide
that no such policy shall be cancelled, materially reduced in amount or
materially changed in coverage until at least 30 days after receipt by the
Collateral Agent of written notice of such cancellation, reduction or change.


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            9.6 Inspection of Property; Books and Records; Discussions. Keep
proper books of record and accounts containing entries with respect to all
dealings and transactions in relation to its business and activities which are
full, true and correct in all material respects in accordance with GAAP and all
Requirements of Law; and permit representatives of any Lender to visit and
inspect any of its properties and examine and make abstracts from any of its
books and records at any reasonable time upon reasonable advance notice and as
often as may reasonably be desired and to discuss the business, operations,
properties and financial and other condition of the Borrowers and their
Subsidiaries with officers of the Borrowers and their Subsidiaries; and, upon
reasonable notice to such Borrower, to permit representatives of the
Administrative Agent and the Collateral Agent to discuss the business,
operations, properties and financial and other condition of the Borrower and its
Subsidiaries with officers and employees of the Borrowers and their Subsidiaries
and with their respective independent certified public accountants or
independent chartered accountants, as applicable.

            9.7 Notices. To the extent that a Responsible Officer of HCNA, any
Borrower (as defined in the US Credit Agreement), Sifto, the Subsequent Borrower
or any Guarantor knows or should reasonably be expected to know thereof,
promptly give notice to the Administrative Agent and each Lender of:

            (a)  the occurrence of any Default or Event of Default;


            (b) any (i) default or event of default under any Contractual
      Obligation of HCNA or any of its Subsidiaries or (ii) litigation,
      investigation or proceeding which may exist at any time between HCNA or
      any of its Subsidiaries and any Governmental Authority, which in either
      case, if not cured or if adversely determined, as the case may be, could
      (in the responsible judgment of such Responsible Officer) reasonably be
      expected to have a Material Adverse Effect;

            (c) any litigation or proceeding affecting HCNA or any of its
      Subsidiaries (including, without limitation, with respect to compliance
      with Environmental Laws) in which the amount involved is US$500,000 (or
      the Equivalent Amount thereof) or more and not covered by insurance issued
      by an insurer who has acknowledged in writing its liability under the
      relevant policy or in which injunctive or similar relief is sought;

            (d) the following events, as soon as possible and in any event
      within 30 days after a Responsible Officer of HCNA knows or should
      reasonably be expected to know thereof: (i) the occurrence or expected
      occurrence of any Reportable Event with respect to any US Plan, a failure
      to make any required contribution to a US Plan, the creation of any Lien
      in favor of the PBGC or a US Plan or any withdrawal from, or


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         the termination, Reorganization or Insolvency of, any Multiemployer
         Plan, (ii) the institution of proceedings or the taking of any other
         action by the PBGC or any Borrower or any Commonly Controlled Entity or
         any Multiemployer Plan with respect to the withdrawal from, or the
         termination, Reorganization or Insolvency of, any US Plan or (iii) the
         occurrence of any event or the existence of any condition which would
         not be in accordance with the provisions of subsection 7.19; and

                  (e) any development or event which could (in the reasonable
         judgment of such Responsible Officer) reasonably be expected to have a
         Material Adverse Effect.

Each notice pursuant to this subsection 9.7 shall be accompanied by a statement
of a Responsible Officer of HCNA setting forth details of the occurrence
referred to therein and stating what action HCNA or the relevant Subsidiary
proposes to take with respect thereto.

            9.8 Environmental Laws. (a) Give, and use its diligent efforts to
cause its tenants and its Subsidiaries' respective tenants to give, timely and
proper notice, and undertake any other measures necessary to ensure that it
obtains any indemnification, defense, contribution or reimbursement that may be
available for, any material liability or alleged material liability arising
under any Environmental Law.

            (b) Diligently plan for and implement all measures reasonably
necessary and appropriate to eliminate any act, operation, omission or condition
that may be out of compliance with, in violation of, or otherwise giving rise to
material liability or potential material liability under, any Environmental Law.

         9.9 Canadian Currency Risk. Maintain prudent business practices in
respect of currency risk with respect to the Canadian operations of the Sifto
Group.

         9.10 Inventory. Use diligent efforts to cause each Public Warehouse and
landlord for any facility in which Inventory of any Borrower is located to
deliver to the Collateral Agent an acknowledgement copy of a Landlord's Waiver
(which may incorporate changes in form and substance reasonably satisfactory to
the Collateral Agent).

         9.11 Field Analyses. Permit the Collateral Agent, at any reasonable
time upon reasonable advance notice and as often as may reasonably be required
to conduct a field analysis and examination of the Collateral, provided that
each Lender shall have the right to accompany the Collateral Agent on any such
field analysis and examination at such Lender's sole expense. The Collateral
Agent hereby agrees to provide promptly to each 



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Lender and each Borrower a copy (or summary thereof) of any field analysis and
examination of the Collateral conducted by it.


    SECTION 10.   NEGATIVE COVENANTS

            HCNA hereby agrees that, so long as the Commitments remain in
effect, any Note or any Letter of Credit remains outstanding and unpaid or any
other amount is owing to any Lender, the Collateral Agent or the Administrative
Agent hereunder, HCNA shall not, and (except with respect to subsection 10.1)
shall not permit any of its Subsidiaries to, directly or indirectly:

            10.1  Financial Condition Covenants.

            (a) Interest Coverage. Permit the Interest Coverage Ratio of HCNA
      and its Subsidiaries for any period of four consecutive fiscal quarters
      ending during any "Test Period" set forth below to be less than the ratio
      set forth opposite such period below:

                                                    Interest
                  Test Period                   Coverage Ratio

          Closing Date  -   12/31/97               1.20 to 1.0
              01/01/98  -   12/31/98               1.40 to 1.0
              01/01/99  -   12/31/99               1.50 to 1.0
              01/01/00  -   thereafter             1.75 to 1.0


            (b) Fixed Charge Coverage. Permit for any period of four consecutive
      fiscal quarters ending during any "Test Period" set forth below the Fixed
      Charge Coverage Ratio of HCNA and its Subsidiaries to be less than the
      ratio set forth opposite such period below:

                                                  Fixed Charge
                  Test Period                   Coverage Ratio

          Closing Date  -   12/31/98               1.00 to 1.0
              01/01/99  -   thereafter             1.10 to 1.0


            (c) Net Funded Debt Coverage. Permit on the last day of any fiscal
      year set forth below the ratio of (i) the amount equal to Consolidated
      Funded Debt of HCNA and its Subsidiaries on such date minus cash and Cash
      Equivalents owned by HCNA and its Subsidiaries on such date to (ii)
      Consolidated EBITDA of HCNA and its Subsidiaries for the fiscal year then
      ended to be greater than the ratio set forth opposite such fiscal year
      below:


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                  Fiscal Year                   Ratio

                      1997                    6.25 to 1.0
                      1998                    6.00 to 1.0
                      1999                    4.85 to 1.0
                      2000                    4.25 to 1.0
                      2001 and each fiscal    3.60 to 1.0
                      year thereafter


         10.2 Limitation on Indebtedness. Create, incur, assume or suffer to
exist any Indebtedness, except:

                  (a) Indebtedness of HCNA and its Subsidiaries under the Loan
         Documents;

                  (b) Indebtedness of HCNA and its Subsidiaries under the Public
         Debt;

                  (c) Indebtedness of HCNA and its Subsidiaries under the US
         Credit Agreement;

                  (d) unsecured Indebtedness of a corporation which becomes a
         Subsidiary of HCNA after the Closing Date, provided that (i) such
         Indebtedness existed at the time such corporation became a Subsidiary
         and was not created in anticipation thereof and (ii) immediately after
         giving effect to the acquisition of such corporation by HCNA and its
         Subsidiaries, no Default or Event of Default shall have occurred and be
         continuing;

                  (e) Indebtedness of HCNA to any of its Subsidiaries and of any
         Subsidiary of HCNA to HCNA or any other Subsidiary; provided that,
         after giving effect to the incurrence of such Indebtedness, the
         Included Investments do not exceed the Permitted Investment Amount;

                  (f) Indebtedness of HCNA and its Subsidiaries in respect of
         Financing Leases (in addition to those permitted pursuant to subsection
         10.2(g)) and in respect of all or a part of the purchase price of
         property, plant and equipment in the ordinary course of business having
         aggregate imputed principal amounts and aggregate principal amounts not
         to exceed as to HCNA and its Subsidiaries US$28,500,000 (or the
         Equivalent Amount thereof) in the aggregate at any time outstanding (of
         which not more than US$5,000,000 (or the Equivalent Amount thereof)
         shall be on account of the Sifto Group);

                  (g) Indebtedness (including, without limitation, in respect of
         Financing Leases) in existence on the Closing Date and listed on
         Schedule V and any refinancings, refundings, renewals or extensions
         thereof, provided that the terms applicable to such refinanced, renewed
         or extended 

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         Indebtedness, as the case may be, are no more burdensome to the
         applicable borrower thereof than the terms applicable to the original
         Indebtedness;

                  (h) additional Indebtedness of HCNA and its Subsidiaries not
         exceeding US$2,000,000 (or the Equivalent Amount thereof) in aggregate
         principal amount at any one time outstanding.

            10.3 Limitation on Liens. Create, incur, assume or suffer to exist
any Lien upon any of its or any of its Subsidiaries' property, assets or
revenues, whether now owned or hereafter acquired, except for:

                  (a) Liens for taxes and other statutory obligations not more
         than 45 days overdue or which are being contested in good faith by
         appropriate proceedings (including, without limitation, those in
         respect of wages, employee deductions, sales taxes, goods and services
         taxes, excise taxes, workers' compensation, pension fund obligations
         and overdue rents), provided that, in any such case, adequate reserves
         with respect thereto are maintained on the books of HCNA or its
         Subsidiaries, as the case may be, in conformity with GAAP (or, in the
         case of Subsidiaries incorporated under the laws of a jurisdiction
         outside of the United States, generally accepted accounting principles
         in effect from time to time in their respective jurisdictions of
         incorporation);

                  (b) carriers', warehousemen's, mechanics', materialmen's,
         repairmen's or other like Liens arising in the ordinary course of
         business in respect of amounts which are not overdue for a period of
         more than 60 days or which are being contested in good faith by
         appropriate proceedings;

                  (c) pledges or deposits in connection with workers'
         compensation, unemployment insurance and other social security
         legislation and deposits securing liability to insurance carriers under
         insurance arrangements;

                  (d) deposits to secure the performance of bids, trade
         contracts (other than for borrowed money), leases, statutory
         obligations, surety and appeal bonds, performance bonds and other
         obligations of a like nature incurred in the ordinary course of
         business;

                  (e) easements, rights-of-way, restrictions and other similar
         encumbrances with respect to real property incurred in the ordinary
         course of business which, in the aggregate, are not substantial in
         amount and which do not in any case materially detract from the value
         of the property subject thereto or materially interfere with the
         ordinary conduct of the business of HCNA or such Subsidiary;


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                  (f) Liens in existence on the Closing Date and listed on
         Schedule VI, securing Indebtedness permitted by subsection 10.2(g),
         provided that no such Lien is spread to cover any additional property
         after the Closing Date and that the amount of Indebtedness secured
         thereby is not increased;

                  (g) Liens securing Indebtedness permitted by subsection
         10.2(g); provided that (i) such Liens shall be created substantially
         simultaneously with the incurrence of such Indebtedness, (ii) such
         Liens do not at any time encumber any property other than the property
         (and, in the case of real property, the improvements thereon) financed
         by such Indebtedness, (iii) the amount of Indebtedness secured thereby
         is not increased and (iv) the principal amount of Indebtedness secured
         by any such Lien shall at no time exceed 100% of the original purchase
         price of, and the cost of construction of or improvement to, such
         property at the time it was acquired, constructed or improved;

                  (h) Liens on Capital Stock of Subsidiaries of HCNA securing
         the obligations of HCNA in respect of the Senior Secured Notes and
         securing Guarantee Obligations permitted pursuant to subsection
         10.4(c);

                  (i) Liens on assets of Sifto and its Subsidiaries securing the
         obligations of Sifto in respect of the Sifto Notes;

                  (j) Liens (not otherwise permitted hereunder) which secure
         obligations not exceeding (as to HCNA and its Subsidiaries in the
         aggregate) US$2,000,000 (or the Equivalent Amount thereof) in aggregate
         amount at any time outstanding;

                  (k) Liens permitted under the US Credit Agreement;

                  (l) Liens for unpaid royalties not then due and payable
         pursuant to mineral leases running in favor of Governmental Authorities
         which Liens, in the aggregate, are not substantial in amount and do
         not, in any case, materially detract from the value of the property
         subject thereto or materially interfere with the ordinary conduct of
         the business of HCNA and its Subsidiaries; provided that such Liens do
         not encumber any Collateral;

                  (m) Liens in respect of judgments and decrees not constituting
         an Event of Default under Section 12;

                  (n) reservations or exceptions contained in the original
         grants from the Crown and minor discrepancies in the legal description
         of any real property which would be disclosed in an up-to-date survey;


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                  (o) zoning by-laws, ordinances or other restrictions as to the
         use of real property, and agreements with other persons registered
         against title to any real property, which do not in the aggregate
         materially detract from the value of the property subject thereto or
         materially interfere with the ordinary conduct of the business of HCNA
         or any of its Subsidiaries; and

            (p)  Liens created pursuant to the Security Documents.

         10.4 Limitation on Guarantee Obligations. Create, incur, assume or
suffer to exist any Guarantee Obligation except:

                  (a) Guarantee Obligations outstanding on the Closing Date and
         listed on Schedule VII;

                  (b) Guarantee Obligations incurred by HCNA and its
         Subsidiaries in respect of unsecured interest rate and currency hedges
         on market terms; provided that the aggregate notional amount of such
         Guarantee Obligations pursuant to this subsection 10.4(b) does not
         exceed (i) in the case of interest rate hedges, the amount of principal
         due from HCNA and its Subsidiaries with respect to Indebtedness
         permitted pursuant to subsection 10.2 which is reasonably subject to
         interest rate fluctuations and (ii) in the case of currency hedges, the
         amount of the relevant currency reasonably subject to exchange rate
         fluctuations which is owing to, or held by, HCNA and its Subsidiaries
         in the ordinary course of business;

                  (c) Guarantee Obligations in respect of the Public Debt;

                  (d) Guarantee Obligations permitted pursuant to the US Credit
         Agreement;

                  (e) the Guarantees;

                  (f) Guarantee Obligations incurred by HCNA and its
         Subsidiaries in respect of obligations of any Guarantor (as defined in
         the US Credit Agreement) which are otherwise permitted hereunder;

                  (g) Guarantee Obligations incurred by any Guarantor (as
         defined in the US Credit Agreement) in respect of obligations of the
         Sifto Group under Financing Leases and operating leases (with the
         amount of such Guarantee Obligations under operating leases being
         deemed to be the present value of the annual lease payments during the
         life of such lease) in an aggregate amount not to exceed US$5,000,000
         at any one time outstanding;

                  (h) Guarantee Obligations incurred by HCNA and its
         Subsidiaries in respect of obligations under operating 


                                      -90-

<pg$pcn>
         leases which are not otherwise permitted pursuant to this subsection
         10.4; provided that, after giving effect to the incurrence of such
         Guarantee Obligations, the Included Investments do not exceed the
         Permitted Investment Amount; and

                  (i) Guarantee Obligations incurred by HCNA and its
         Subsidiaries in respect of the obligation of Searles Domestic Water
         Company to provide water to the residents of Searles Valley,
         California; provided that any payments on account of such Guarantee
         Obligations shall be deemed to be Investments in a Subsidiary of HCNA
         which is not a Guarantor (as defined in the US Credit Agreement) or a
         member of the Sifto Group for purposes of subsection 10.10(e).

            10.5 Limitation on Capital Expenditures. Make or commit to make (by
way of the acquisition of securities of a Person or otherwise) any Capital
Expenditures, other than Capital Expenditures in the ordinary course of business
not exceeding (excluding any capitalized interest which otherwise would be
included therein), (a) in the aggregate for HCNA and its Subsidiaries (excluding
Major Project Capital Expenditures and including Capital Expenditures made by
the Subsidiaries described in clause (b) below) during any of the fiscal years
of HCNA set forth below, the "HCNA Amount" set forth opposite such fiscal year
below, (b) in the aggregate for the Sifto Group (excluding Major Project Capital
Expenditures) during any of the fiscal years of HCNA set forth below, the "Sifto
Amount" set forth opposite such fiscal year below or (c) in the aggregate with
respect to Major Project Capital Expenditures during any of the fiscal years of
HCNA set forth below, the "Major Project Amount" set forth opposite such fiscal
year below (collectively, the "Permitted Capital Expenditures"):

<TABLE>
<CAPTION>
                              HCNA                 Sifto          Major Project
 Fiscal Year                 Amount               Amount              Amount
 -----------                 ------               ------              ------
<S>                     <C>                  <C>                  <C>
     1997               US$27,400,000        US$ 8,000,000        US$ 8,200,000
     1998                  27,000,000            8,000,000         13,000,000
     1999                  37,900,000            8,000,000            800,000
     2000                  29,900,000            8,000,000            300,000
     2001                  30,300,000            8,000,000            300,000
     2002                  30,300,000            8,000,000            300,000
</TABLE>


provided, that (a) any portion of any such HCNA Amount for any fiscal year may
instead be added ("Transferred HCNA Amounts") to the Major Project Amount
available for Major Project Capital Expenditures in such fiscal year (which
Transferred HCNA Amounts shall also be deemed usage of any such HCNA Amount for
the purposes of this subsection), (b) any portion of any such HCNA Amount (not
to exceed 50% of the HCNA Amount set forth above for that fiscal year) which is
not expended in the fiscal year for which it is permitted above may be carried
over and added to the 

                                      -91-

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HCNA Amount which is to be available for expenditure by HCNA and its
Subsidiaries in the next following fiscal year and shall be deemed to be the
first such HCNA Amount so expended in such next following fiscal year (provided,
however, that the HCNA Amount so available in such next following year (as
adjusted by the amounts so carried over) shall not be increased by the portion
of the Sifto Amount carried over pursuant to clause (c) below), (c) any portion
of any such Sifto Amount (not to exceed 50% of the Sifto Amount set forth above
for that fiscal year) which is not expended in the fiscal year for which it is
permitted above may be carried over and added to the Sifto Amount which is to be
available for expenditure by the Sifto Group in the next following fiscal year
and shall be deemed to be the first such Sifto Amount so expended in such next
following fiscal year and (d) any portion of any such Major Project Amount which
is not expended in the fiscal year for which it is permitted above may be
carried over and added to the Major Project Amount which is available for
expenditure by HCNA and its Subsidiaries in the next following fiscal year and
shall be deemed to be the first such Major Project Amount so expended in such
next following fiscal year.

         10.6 Limitation on Leases. Permit Consolidated Lease Expense for any
fiscal year of HCNA and its Subsidiaries to exceed US$22,000,000 (or the
Equivalent Amount thereof) in the aggregate.

         10.7 Limitation on Fundamental Changes. Enter into any merger,
consolidation or amalgamation, or liquidate, wind up or dissolve itself (or
suffer any liquidation or dissolution), or convey, sell, lease, assign, transfer
or otherwise dispose of, all or substantially all of its property, business or
assets, or make any material change in its present method of conducting
business, except:

            (a) any Borrower (as defined herein and in the US Credit Agreement)
      may be merged or consolidated or amalgamated with or into another Borrower
      (as defined herein and in the US Credit Agreement); provided that (i) the
      relevant Administrative Agent and Collateral Agent have received 30 days'
      prior written notice of such merger, consolidation or amalgamation, (ii)
      after giving effect to such merger, consolidation or amalgamation, the
      relevant Collateral Agent or the relevant Collateral Agent, the
      Administrative Agent and the Lenders, as applicable, shall have a first
      priority, perfected security interest (or the applicable equivalent
      thereof) in all Collateral in which it possessed a perfected security
      interest (or the applicable equivalent thereof) immediately prior to
      giving effect to such merger, consolidation or amalgamation and (iii) the
      relevant Administrative Agent and the Collateral Agent shall have received
      such other documents, instruments, agreements, legal opinions and
      certificates as may reasonably be requested by them in connection with
      such transaction;


                                      -92-

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                  (b) any wholly owned Subsidiary of a Borrower (as defined
         herein and in the US Credit Agreement) may be amalgamated with or into
         (i) such Borrower or (ii) any other Borrower (as defined herein and in
         the US Credit Agreement) or (iii) in the case of any such Subsidiary
         which is not a member of the Sifto Group, any one or more other
         Guarantors (as defined in the US Credit Agreement) or (iv) in the case
         of any such Subsidiary which is a member of the Sifto Group, any one or
         more other Guarantors; provided that the Administrative Agent and the
         Collateral Agent shall have received such other documents, instruments,
         agreements, legal opinions and certificates as may reasonably be
         requested by them in connection with such amalgamation; and provided
         further, that the aggregate book value of all assets which are to
         become (and, immediately prior to such event, were not) held by a
         member of the Sifto Group in any fiscal year of HCNA pursuant to
         subsections 10.7(c), 10.8(l) and this subsection 10.7(b) shall not
         exceed US$3,000,000 and in the case of any such disposition under this
         subsection 10.7(b) to any member of the Sifto Group by any Person who
         is not a member of the Sifto Group, such disposition shall be made for
         fair value and shall be made in accordance with past business practice;

                  (c) any wholly owned Subsidiary of HCNA may convey, sell,
         lease, assign, transfer or otherwise dispose of any or all of its
         business, property or assets (upon voluntary liquidation or otherwise)
         to a Borrower (as defined in the US Credit Agreement), any other
         Guarantor (as defined in the US Credit Agreement) or any member of the
         Sifto Group and in the case of any such disposition under this
         subsection 10.7(c) to any member of the Sifto Group by any Person who
         is not a member of the Sifto Group, such disposition shall be made for
         fair value and shall be made in accordance with past business practice;
         provided that the aggregate book value of all assets so conveyed, sold,
         leased, assigned, transferred or otherwise disposed of pursuant to
         subsections 10.7(b), 10.8(l) and this subsection 10.7(c) to members of
         the Sifto Group by a Person who is not a member of the Sifto Group in
         any fiscal year of HCNA shall not exceed US$3,000,000;

                  (d) subject to any applicable restrictions contained in the
         Security Documents (as defined herein and in the US Credit Agreement),
         any Borrower (as defined herein and in the US Credit Agreement) or any
         Subsidiary of a Borrower (as defined herein and in the US Credit
         Agreement) may sell or otherwise dispose of all or substantially all of
         its assets pursuant to a transaction permitted by subsection 10.8(b);
         and

                  (e) HCNA and its Subsidiaries may enter into transactions
         which are otherwise prohibited by this subsection 10.7 to the extent
         that such transactions are 


                                      -93-

<pg$pcn>
         permitted pursuant to subsection 10.7 of the US Credit Agreement;

provided, however, that in the case of any transaction permitted by subsection
10.7(a) or 10.7(b) the Person which is the continuing or surviving corporation
of such amalgamation, merger or consolidation shall provide to the relevant
Collateral Agent and Administrative Agent such other documents, instruments,
agreements, legal opinions and certificates as may reasonably be deemed
necessary or appropriate by such Collateral Agent or the Collateral Agent, the
Administrative Agent and the Lenders, as applicable, and Administrative Agent to
perfect the security interest (or the applicable equivalent thereof) of such
Collateral Agent in the Collateral (as defined in the relevant Security
Agreements, with such term being used as defined herein and in the US Credit
Agreement).

            10.8 Limitation on Sale of Assets. Convey, sell, lease, assign,
transfer or otherwise dispose of any of its property, business or assets
(including, without limitation, receivables, leasehold interests, Capital Stock
and all Collateral), whether now owned or hereafter acquired, except:

                  (a) the sale or other disposition of obsolete or worn out
         equipment, fixtures or real property in the ordinary course of
         business;

                  (b) the sale or other disposition of all or any portion of the
         Capital Stock of a Subsidiary of HCNA which was not a Subsidiary of
         HCNA on December 28, 1996 or of any equipment, fixtures or real
         property of HCNA or any of its Subsidiaries for fair market value;
         provided that (i) after giving effect to such sale or other
         disposition, the aggregate book value of all assets so sold or disposed
         of subsequent to December 28, 1996 (other than inventory sold in the
         ordinary course of business) does not exceed US$30,000,000 (or the
         Equivalent Amount thereof) in the aggregate and not more than
         US$10,000,000 (or the Equivalent Amount thereof) in the aggregate of
         such US$30,000,000 (or the Equivalent Amount thereof) shall be in
         respect of the sale or other disposition of any property of members of
         the Sifto Group and (ii) such sale or other disposition could not
         reasonably be expected to have a Material Adverse Effect;

                  (c) the sale of inventory in the ordinary course of business;

                  (d) in the case of any Subsidiary of HCNA, the issuance or
         sale of shares of such Subsidiary's Capital Stock to any Borrower (as
         defined in the US Credit Agreement) or any wholly owned Subsidiary of
         HCNA;


                                      -94-

<pg$pcn>
                  (e) the transfer or relinquishment of mineral lease acreage to
         the extent required to stay within maximum allowable acreage or in
         exchange for Public Land Act leases; provided that such transfer or
         relinquishment could not reasonably be expected to have a Material
         Adverse Effect;

                  (f) the extension or renewal of existing leases or new leases
         covering nonindustrial commercial or residential property owned by HCNA
         or its Subsidiaries; provided that any such new leases shall be on
         commercially reasonable terms and could not reasonably be expected to
         have a Material Adverse Effect;

                  (g) relinquishment for no consideration of federal rights of
         way or portions thereof not needed for the operation of the business of
         HCNA or any of its Subsidiaries;

                  (h) extension or renewal of existing leases or new leases with
         public utilities serving HCNA or its Subsidiaries; provided that the
         terms of such leases could not reasonably be expected to have a
         Material Adverse Effect;

                  (i) the issuance or sale for cash of not more than
         US$25,000,000 (or the Equivalent Amount thereof) in the aggregate of
         preferred Capital Stock of HCNA the rights, designations and
         preferences for which are in form and substance reasonably satisfactory
         to the Aggregate Majority Lenders;

                  (j) the sale, transfer or other disposition by Sifto of all or
         any part of its assets to the Subsequent Borrower;

                  (k) the making of any Restricted Payment permitted under
         subsection 10.9 or Investment permitted under subsection 10.10;

                  (l) the conveyance, sale, lease, assignment, transfer or other
         disposition of any or all of its business, property or assets (upon
         voluntary liquidation or otherwise) by any wholly owned Subsidiary of
         HCNA to any Borrower (as defined in the US Credit Agreement), Guarantor
         (as defined in the US Credit Agreement) or member of the Sifto Group;
         provided that the aggregate book value of all assets so disposed of
         pursuant to subsections 10.7(b), 10.7(c) and this subsection 10.8(l) to
         members of the Sifto Group by any Person who is not a member of the
         Sifto Group in any fiscal year of HCNA shall not exceed US$3,000,000
         and in the case of any such disposition under this subsection 10.8(l)
         to any member of the Sifto Group by any Person who is not a member of
         the Sifto Group, such disposition shall be made for fair value and
         shall be made in accordance with past business practice; and


                                      -95-

<pg$pcn>
                  (m) in the case of any Soda Ash Subsidiary, the issuance or
         sale of up to 49% of the Capital Stock of such Soda Ash Subsidiary to
         one or more Persons that are not Affiliates of HCNA in connection with
         a joint venture arrangement with such Persons.

            10.9 Limitation on Restricted Payments. Declare or pay any dividend
(other than dividends payable solely in common stock of a Borrower, as such term
is defined in the US Credit Agreement) on, or make any payment on account of, or
set apart assets for a sinking or other analogous fund for, the purchase,
redemption, defeasance, retirement or other acquisition of, any shares of any
class of Capital Stock of HCNA or any warrants or options to purchase any such
Stock, whether now or hereafter outstanding, or make any other distribution in
respect thereof, either directly or indirectly, whether in cash or property or
in obligations of HCNA or any of its Subsidiaries (such declarations, payments,
setting apart, purchases, redemptions, defeasances, retirements, acquisitions
and distributions being herein called "Restricted Payments"), except:

            (a) Restricted Payments made by Subsidiaries of HCNA to HCNA or any
      Guarantor (as defined in the US Credit Agreement) and Restricted Payments
      made by any member of the Sifto Group to another member of the Sifto
      Group;

            (b) during such time as no Default or Event of Default has occurred
      and is continuing or would result therefrom, Restricted Payments made by
      HCNA to HCG for the purpose of enabling HCG to pay its actual operating
      expenses in the ordinary course of business in an aggregate amount not to
      exceed, in any fiscal year of HCNA set forth below, the amount set forth
      opposite such fiscal year:

<TABLE>
<CAPTION>
                    Fiscal Year               Amount
                    -----------               ------
<S>                 <C>                      <C>
                       1997                   US$850,000
                       1998                      892,500
                       1999                      937,125
                       2000                      984,000
                       2001                    1,033,200
                       2002                    1,084,900
</TABLE>


provided that, in the event that any amounts otherwise available to be paid to
HCG pursuant to this subsection 10.9(b) may not be so paid because of the
occurrence and continuance of a Default or an Event of Default, such amounts
shall accrue (with such accrued amounts being subordinated in right of payment
to amounts owing hereunder and under the Guarantees) and may be paid on a
cumulative basis (without interest thereon) at such later date when no Default
or Event of Default has occurred and is continuing or would result therefrom;


                                      -96-

<pg$pcn>

                  (c) Restricted Payments to HCG (in addition to those permitted
         pursuant to subsection 10.9(b)) in an aggregate amount not to exceed at
         any time the amount equal to (i) 25% of the cumulative Consolidated
         Free Cash Flow of HCNA from December 28, 1996 through the date of the
         then most recent financial statements of HCNA provided to the
         Administrative Agent pursuant to subsection 9.1(a) or 9.1(b), as the
         case may be, minus (ii) the amount of investments made during such
         period pursuant to subsection 10.10(c); provided that the Restricted
         Payment Allowance Condition shall be satisfied before and after giving
         effect to the making of such Restricted Payment;

                  (d) during such time as no Default or Event of Default has
         occurred and is continuing, Restricted Payments by HCNA in an aggregate
         amount not to exceed US$2,000,000 (or the Equivalent Amount thereof)
         subsequent to December 28, 1996 in respect of the purchase by HCNA of
         Capital Stock of HCG from management of HCNA and its Subsidiaries to
         the extent that such repurchases are required pursuant to an employee
         stock plan of HCNA, which plan shall be in form and substance
         reasonably satisfactory to the Collateral Agent and Administrative
         Agent under the US Credit Agreement;

                  (e) Restricted Payments pursuant to the Tax Sharing Agreement,
         which Restricted Payments (i) shall be made not earlier than three
         Business Days prior to the date upon which HCG's related liability to
         the relevant Governmental Authority for tax (including, without
         limitation, estimated taxes) is paid (or, if no such taxes are payable,
         ordinarily would have been due) and (ii) shall not exceed the amount of
         income taxes which is to be paid by HCNA to HCG pursuant to such Tax
         Sharing Agreement; and

                  (f) Restricted Payments in respect of the purchase by HCNA of
         common stock of HCNA, which Restricted Payments may be made in any
         combination of (i) cash constituting the proceeds of the sale (after
         the Closing Date) of common stock of HCNA or (ii) common stock of HCNA.

                  10.10 Limitation on Investments, Loans and Advances. Make any
advance, loan, extension of credit or capital contribution to, or purchase any
stock, bonds, notes, debentures or other securities of or any assets
constituting all or substantially all of the assets of a business unit of, or
make any other investment in, any Person (such advances, loans, extensions of
credit, capital contributions, purchases and other investments being herein
called "Investments"), except:

                  (a) Investments in the form of extensions of trade credit in
         the ordinary course of business;

                  (b) Investments in Cash Equivalents;




                                      -97-

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                  (c) Investments by HCNA and its Subsidiaries not otherwise
         permitted hereunder in Capital Stock and assets of Persons other than
         Guarantors (as defined in the US Credit Agreement) in an amount not to
         exceed at any time, in the aggregate with all other Investments made by
         HCNA and its Subsidiaries permitted by this subsection 10.10(c), the
         amount equal to (i) 25% of the cumulative Consolidated Free Cash Flow
         of HCNA from December 28, 1996 through the date of the then most recent
         financial statements of HCNA provided to the Administrative Agent
         pursuant to subsection 9.1(a) or 9.1(b), as the case may be, minus (ii)
         the amount of Restricted Payments made during such period pursuant to
         subsection 10.9(c); provided that (w) the business being acquired is
         substantially the same as, or directly related to, that in which HCNA
         or any of its Subsidiaries presently is engaged, (x) for purposes of
         this subsection 10.10(c), the aggregate amount of any such Investment
         (i) shall include, without limitation, the amount of Indebtedness
         (including, without limitation, Guarantee Obligations) and other
         liabilities assumed or forgiven (and, in the case of any acquisition of
         more than 50% of the issued and outstanding Capital Stock of a Person
         (including, without limitation, acquisitions by merger or
         amalgamation), with any Indebtedness and other liabilities which remain
         on the consolidated balance sheet of such acquired Person and its
         consolidated Subsidiaries after giving effect to such acquisition being
         deemed to be assumed) and the fair market value of any non-cash
         consideration and (ii) shall not exceed 10% of the book value of the
         assets of HCNA and its Subsidiaries on a consolidated basis (as
         reflected on the most recent consolidated balance sheet of HCNA and its
         Subsidiaries delivered pursuant to subsection 9.1(a) or 9.1(b), as the
         case may be, prior to the date upon which such acquisition was
         consummated), (y) the Restricted Payment Allowance Condition shall be
         satisfied before and after giving effect to the making of such
         Investment and (z) HCNA and its Subsidiaries shall have made available
         to the Administrative Agent and the Lenders at least 30 days prior to
         the consummation of such Investment all material due diligence
         information provided to or prepared by HCNA and its Subsidiaries in
         connection therewith;

                  (d) (i) Investments in joint ventures in which HCNA or any of
         its Subsidiaries holds (after giving effect to such Investment) Capital
         Stock, which investments shall not, in the aggregate, exceed the amount
         equal to (i) the Permitted Investment Amount immediately prior to the
         making of such Investment plus (ii) the aggregate amount of any
         additional Investments in such joint ventures which is treated as a
         Capital Expenditure for purposes of this Agreement (and is made in
         compliance with the provisions of subsection 10.5);

                  (e) Investments by HCNA or any of its Subsidiaries in HCNA or
         any of its Subsidiaries (including, without 



                                      -98-

<pg$pcn>
         limitation, the Borrowers hereunder and under, and as defined in, the
         US Credit Agreement); provided that, after giving effect to the making
         of such Investments, the Included Investments do not exceed the
         Permitted Investment Amount;

                  (f) Investments in the form of loans and advances to employees
         of HCNA and its Subsidiaries for travel, entertainment and relocation
         expenses in the ordinary course of business in an aggregate amount for
         HCNA and its Subsidiaries not to exceed US$1,000,000 (or the Equivalent
         Amount thereof) at any one time outstanding;

                  (g) Investments permitted pursuant to subsection 10.11(c); and

                  (h) Investments by NACC of all or part of its soda ash
         business in a Soda Ash Subsidiary.

                  10.11 Limitation on Modifications of Debt Instruments and
Other Agreements; Optional Payments of Debt Instruments. (a) Amend, modify,
restate, supplement or change any of the terms of the Public Debt or of the
indentures governing the Public Debt, other than any such amendment,
modification or change which, (i) pursuant to clause (4), (5) or (6) of Section
901 of any indenture governing the Public Debt (or any comparable clauses of any
indenture governing Permitted Refinancing Indebtedness in respect of the Public
Debt) could be effected by the Trustee thereunder (and as defined therein)
without a vote of the holders of such Public Debt and (ii) could not reasonably
be expected to materially adversely affect the Administrative Agent, the
Collateral Agent or the Lenders.

                  (b) Amend, modify, restate, supplement or change (i) any of
         the terms of the Tax Sharing Agreement or Services Agreement or (ii)
         any of the terms of the Stockholders' Agreement in any respect which
         (in the case of this clause (ii) only) could be adverse to the
         interests of the Administrative Agent, the Collateral Agent or the
         Lenders or (in the case of clause (i) or (ii)), could reasonably be
         expected to increase the obligations of HCNA or any of its Subsidiaries
         thereunder.

                  (c) Make any optional payment or prepayment on, or redemption
         or repurchase of, the Public Debt (including, without limitation, by
         way of an "Offer to Purchase" pursuant to, and as defined in, the
         indentures governing the Public Debt), in each case other than pursuant
         to the incurrence of Permitted Refinancing Indebtedness; provided that,
         so long as no Default or Event of Default has occurred and is
         continuing or would result therefrom, HCNA and Sifto may collectively
         repurchase (other than with the proceeds of Loans hereunder):




                                      -99-

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                           (i) not more than US$30,000,000 (or the Equivalent
                  Amount thereof) in aggregate principal amount of the Senior
                  Secured Notes and the Sifto Notes;

                           (ii) an additional amount of Senior Secured Notes and
                  Sifto Notes, provided that (A) the Debt Purchase Conditions
                  are then satisfied and (B) the aggregate consideration paid by
                  HCNA and its Subsidiaries for such Senior Secured Notes and
                  Sifto Notes does not exceed US$25,000,000 (or the Equivalent
                  Amount thereof); and

                           (iii) an additional amount of Public Debt (including,
                  without limitation, Senior Subordinated Notes) not to exceed
                  the amount of net cash proceeds received subsequent to the
                  Closing Date by HCNA (by way of capital contribution in the
                  event of a public offering of the Capital Stock of HCG) from
                  public offerings of the Capital Stock of HCG or HCNA.

                  (d) Amend, modify, restate, supplement or change any material
         terms of the Sale/Leaseback Documents.

                  10.12 Limitation on Transactions with Affiliates. Enter into
any transaction (other than the transactions contemplated by the Tax Sharing
Agreement, the Services Agreement and the Stockholders' Agreement), including,
without limitation, any purchase, sale, lease or exchange of property or the
rendering of any service, with any Affiliate unless such transaction (a) is
otherwise permitted under this Agreement, (b) is in the ordinary course of
HCNA's or such Subsidiary's business, (c) is upon terms no less favorable to
HCNA or such Subsidiary, as the case may be, than it would obtain in a
comparable arm's-length transaction with a Person which is not an Affiliate (it
being understood that the approval by the independent directors of HCNA of a
transaction shall be presumptive evidence that such transaction is no less
favorable than such an arm's-length transaction) and (d) could not reasonably be
expected to have a detrimental effect upon HCNA or any of its Subsidiaries.
Notwithstanding the foregoing, any Affiliate of HCNA who is an individual may
serve as a director, officer, employee or consultant of HCNA or any of its
Subsidiaries and receive reasonable compensation or indemnification in
connection with his or her services in such capacity, plus reimbursement of
reasonable expenses, including travel and entertainment expenses, directly
relating to the business of HCNA or any of its Subsidiaries, provided, that
compensation per annum and indemnification to any such individual in excess of
US$250,000 (i) shall be approved by the compensation committee of the Board of
Directors of HCNA or a majority of the directors of the Board of Directors of
HCNA and (ii) may only be paid to individuals holding the title of Chairman or
Vice Chairman.



                                     -100-

<pg$pcn>
                  10.13 Limitation on Changes in Fiscal Year. Permit the fiscal
year of HCNA or of any Borrower (as defined herein and in the US Credit
Agreement) to end on a day other than the last Saturday in March.

                  10.14 Limitation on Negative Pledge Clauses. Enter into with
any Person any agreement which prohibits or limits the ability of any Borrower
(as defined in the US Credit Agreement) or any of its Subsidiaries to create,
incur, assume or suffer to exist any Lien upon any of its property, assets or
revenues, whether now owned or hereafter acquired; provided that nothing
contained in this subsection 10.14 shall prohibit HCNA or any of its
Subsidiaries from entering into this Agreement, any other Loan Document, the US
Credit Agreement, any other Loan Document (as defined in the US Credit
Agreement) or any industrial revenue bonds, purchase money mortgages or
Financing Leases permitted by this Agreement (in which cases, any prohibition or
limitation on Liens contained therein shall only be effective against the assets
financed thereby) or the Public Debt or the Sale/Leaseback Documents.

                  10.15 Limitation on Lines of Business. Enter into any
business, either directly or through any Subsidiary, except for those businesses
in which the Borrowers (as defined in the US Credit Agreement) and their
Subsidiaries are engaged on the date of this Agreement or which are directly
related thereto.

                  10.16 Payments in Respect of Accounts. (a) Instruct or
otherwise permit any Person obligated under any of the Accounts (as defined in
the Security Agreements) or Claims (as defined in the Security Agreements) to
remit any payment whether by check, wire transfer or otherwise) to any account
or address other than a lock box, concentration or similar account established
by the Collateral Agent pursuant to a Lock Box Agreement.

                  (b) Request any withdrawals from any concentration account
(including, without limitation, any Accumulation Account established pursuant
to, and as defined in, a Lock Box Agreement) in an amount which is in excess of
the amount reasonably estimated by the relevant Borrower as being necessary to
finance its immediate cash requirements in the ordinary course of business, with
each request for a withdrawal from any such concentration account by any
Borrower being deemed to be a representation and warranty by such Borrower that
such request complies with the provisions of this subsection 10.16(b).

                  10.17 Maintenance of Bank Accounts. (a) Maintain any material
bank accounts (other than the Master Concentration Account created pursuant to
(and defined in) the Security Agreements) in Canada (including, without
limitation, any such accounts which could reasonably be deemed to be "principal
operating accounts") with a Person other than a Canadian "Schedule I" bank or a
Lender.



                                     -101-

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                  (b) Maintain any material bank accounts outside of Canada
(including, without limitation, any such accounts which could reasonably be
deemed to be "principal operating accounts") with a Person other than a Lender
(as defined herein and in the US Credit Agreement); provided, however, that HCNA
and its Subsidiaries may maintain bank accounts in the United States with The
Chase Manhattan Bank, the Lock Box Accounts maintained pursuant to (and as
defined in) the Lock Box Agreement (as defined herein and in the US Credit
Agreement) and the Master Concentration Account created pursuant to (and defined
in) the Security Agreements referred to in the US Credit Agreement.

                  (c) During such time as any Loans or L/C Obligations which are
not cash collateralized are owing hereunder, maintain any material balances in
any deposit account with a bank or other financial institution in excess of the
amounts required to finance immediate cash requirements in the ordinary course
of business, except to the extent that such balances are directly attributable
to any conveyance, sale, lease, assignment, transfer or other disposal of any of
the property, business or assets (other than property, business or assets
constituting Collateral) of HCNA or any of its Subsidiaries permitted pursuant
to subsection 10.8.

                  10.18 Restriction on Cash Balances. Except to the extent that
(a) the indentures governing the Public Debt specifically otherwise require or
(b) no Loans are then outstanding hereunder or under (and as defined in) the US
Credit Agreement, permit any member of the Sifto Group to hold any cash or Cash
Equivalents in excess of the amounts required to finance immediate cash
requirements in the ordinary course of business.

                  10.19 Subsidiaries. (a) Create, acquire or otherwise suffer to
exist any Subsidiary of HCNA (other than Subsidiaries of HCNA existing on the
date hereof, Searles Domestic Water Company, the Sifto Group, any Soda Ash
Subsidiary and any Insignificant Subsidiary), unless either (i) such Subsidiary
has executed and delivered to the Collateral Agent a guarantee, substantially in
the form of Exhibit D, together with such certificates, approvals, legal
opinions and other documents as the Administrative Agent or the Collateral Agent
reasonably may request or (ii) the Borrowers (as defined in the US Credit
Agreement) present evidence to the Lenders that the making of such guarantee by
such Subsidiary could reasonably be expected to have a Material Adverse Effect,
and the holders of at least 75% of the Commitments (in their sole discretion)
agree in writing that such guarantee shall not be required.

                  (b) Create, acquire or otherwise suffer to exist any member of
the Sifto Group (other than Sifto and any Insignificant Subsidiary), unless all
members of the Sifto Group (including, without limitation, Sifto, but excluding
any Insignificant Subsidiary) have duly executed and delivered to the Collateral
Agent (i) an unlimited guarantee, in form and substance 



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reasonably satisfactory to the Collateral Agent, of the obligations of Sifto and
the Subsequent Borrower hereunder and (ii) such certificates, approvals, legal
opinions and other documents as the Administrative Agent or the Collateral Agent
reasonably may request.

                  10.20 Amendments to Charter and By-Laws. Amend, supplement or
otherwise modify its Certificate of Incorporation or by-laws.

                  10.21 Limitation on Dividend Restrictions. Enter into with any
Person any agreement which prohibits or limits the ability of any member of the
Sifto Group to make Restricted Payments in respect of its Capital Stock.


       SECTION 11.     GUARANTEES

                  11.1 Guarantees. To induce the Administrative Agent, the
Collateral Agent and the Lenders to execute and deliver this Agreement and to
make the extensions of credit hereunder, and in consideration thereof, each
Parent Guarantor hereby, jointly and severally and unconditionally and
irrevocably, guarantee to the Administrative Agent, the Collateral Agent and
each Lender (and their respective successors and assigns) the prompt and
complete payment when due (whether at the stated maturity, by acceleration or
otherwise, but subject to applicable grace periods contained herein) of the
Obligations.

                  11.2 No Subrogation, Contribution, Reimbursement or Indemnity.
(a) Notwithstanding anything to the contrary contained in this Agreement,
neither any Parent Guarantor nor any Borrower shall be entitled to be subrogated
to any of the rights of the Administrative Agent, the Collateral Agent or any
Lender against any other Borrower or any other Guarantor or any collateral
security or guarantee or right of offset held by the Administrative Agent, the
Collateral Agent or any Lender for the payment of the Obligations, nor shall any
Borrower seek or be entitled to seek any contribution or reimbursement from any
other Borrower or any other guarantor (including, without limitation, any other
Parent Guarantor) in respect of payments made by such Borrower hereunder, until
all amounts owing to the Administrative Agent, the Collateral Agent and the
Lenders by each Borrower on account of the Obligations are paid in full and the
Commitments are terminated.

                  (b) So long as the Obligations remain outstanding, if any
amount shall be paid by or on behalf of any Borrower to any Parent Guarantor on
account of any of the rights waived in this subsection 11.2, such amount shall
be held by such Parent Guarantor in trust, segregated from other funds of such
Parent Guarantor, and shall, forthwith upon receipt by such Parent Guarantor, be
turned over to the Collateral Agent in the exact form received by such Parent
Guarantor (duly indorsed by such 



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Parent Guarantor to the Collateral Agent, if required), to be applied against
the Obligations, whether matured or unmatured, as provided in subsection 6.11.

                  (c) The provisions of this subsection 11.2 shall survive the
termination of the guarantees contained in this Section 11, the payment in full
of the Obligations and the termination of the Commitments.

                  11.3 Modification of Obligations. Each Parent Guarantor hereby
consents that, without the necessity of any reservation of rights against it and
without notice to or further assent by it, any demand for payment of any of the
Obligations made by the Administrative Agent, the Collateral Agent or any Lender
may be rescinded by the Administrative Agent, the Collateral Agent or such
Lender, respectively, and any of the Obligations continued, and the Obligations,
or the liability of any other party upon or for any part thereof, or any
collateral security or guarantee therefor or right of offset with respect
thereto, may, from time to time, in whole or in part, be renewed, extended,
amended, modified, accelerated, compromised, waived, surrendered or released by
the Administrative Agent, the Collateral Agent or such Lender and this Agreement
(other than the obligations specifically incurred by the Parent Guarantors under
this Section 11), any Note, any Application, any Letter of Credit, any
collateral security document or other guarantee or document in connection
therewith may (in accordance with the provisions of this Agreement, including,
without limitation, subsection 14.1) be amended, modified, supplemented or
terminated, in whole or in part, as any such Administrative Agent, the
Collateral Agent or such Lender may deem advisable from time to time, and any
collateral security or guarantee or right of offset at any time held by the
Administrative Agent, the Collateral Agent or any Lender for the payment of the
Obligations may be sold, exchanged, waived, surrendered or released, all without
the necessity of any reservations of rights against any Parent Guarantor and
without notice to or further assent by any Parent Guarantor, each of which will
remain bound hereunder notwithstanding any such renewal, extension, supplement,
termination, sale, exchange, waiver, surrender or release. None of the
Administrative Agent, the Collateral Agent nor any Lender shall have any
obligation to protect, secure, perfect or insure any collateral security
document or property subject thereto at any time held as security for the
Obligations. When making any demand hereunder against any Parent Guarantor, the
Administrative Agent, the Collateral Agent or any Lender may, but shall be under
no obligation to, make a similar demand on the relevant Borrower or upon any
other guarantor, and any failure by the Administrative Agent, the Collateral
Agent or such Lender to make any such demand or to collect any payments from any
other Parent Guarantor or any such other guarantor or any release of a Borrower
or such other guarantor shall not relieve such Parent Guarantor, of its
obligations and liabilities hereunder, and shall not impair or affect the rights
and remedies, express or 



                                     -104-

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implied, or as a matter of law, of the Administrative Agent, the Collateral
Agent or any Lender against any Parent Guarantor. For purposes of this
subsection 11.3, the term "demand" shall include the commencement and
continuance of any legal proceedings.

                  11.4 Waiver. Each Parent Guarantor hereby waives any and all
notice of the creation, renewal, extension or accrual of any of the Obligations
and notice of or proof of reliance by the Administrative Agent, the Collateral
Agent or any Lender upon the guarantees contained in this Section 11 or
acceptance of the guarantees contained in this Section 11, and the Obligations,
and any of them, shall conclusively be deemed to have been created, contracted
or incurred in reliance upon the guarantees contained in this Section 11, and
all dealings between the Parent Guarantors and the Administrative Agent, the
Collateral Agent or the Lenders shall likewise be conclusively presumed to have
been had or consummated in reliance upon the guarantees contained in this
Section 11. Each Parent Guarantor hereby waives diligence, presentment, protest,
demand for payment and notice of default or nonpayment to or upon any Parent
Guarantor with respect to the Obligations. This Section 11 shall be construed as
continuing, absolute and unconditional guarantees of payment without regard to
the validity, regularity or enforceability of this Agreement, the Notes, any
Application, any Letter of Credit, any other Loan Document, any of the
Obligations, or any collateral security or guarantee therefor or right of offset
with respect thereto at any time or from time to time held by the Administrative
Agent, the Collateral Agent or any Lender and without regard to any defense,
set-off or counterclaim which may at any time be available to or be asserted by
any Parent Guarantor or any Borrower against the Administrative Agent, the
Collateral Agent or any Lender, or by any other circumstance whatsoever (with or
without notice to or knowledge of any Parent Guarantor) (other than payment in
full of the Obligations) which constitutes, or might be construed to constitute,
an equitable or legal discharge of any Borrower for the Obligations or of such
Parent Guarantor under the guarantees contained in this Section 11 in bankruptcy
or in any other instance, and the obligations and liabilities of such Parent
Guarantor hereunder shall not be conditioned or contingent upon the pursuit by
the Administrative Agent, the Collateral Agent or any Lender at any time of any
right or remedy against any Borrower or any other Person which may be or become
liable in respect of all or any part of the Obligations or against any
collateral security or guarantee therefor or right of offset with respect
thereto. The guarantees contained in this Section 11 shall remain in full force
and effect and be binding in accordance with and to the extent of their terms
upon each Parent Guarantor (and any successors and assigns of either thereof)
and shall inure to the benefit of the Administrative Agent, the Collateral Agent
and the Lenders and their respective successors and assigns, until (subject to
subsection 11.5) all of the Obligations and the obligations of the Parent
Guarantors under this Section 11 shall have been satisfied by payment in full,




                                     -105-

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notwithstanding that from time to time during the term of this Agreement the
Borrowers may be free from any Obligations.

                  11.5 Reinstatement. Each of the guarantees contained in this
Section 11 shall continue to be effective, or be reinstated, as the case may be,
if at any time payment, or any part thereof, of any of the Obligations is
rescinded or must otherwise be restored or returned by the Administrative Agent,
the Collateral Agent or any Lender upon the insolvency, bankruptcy, dissolution,
liquidation or reorganization of a Borrower, or upon or as a result of the
appointment of a receiver, intervenor or conservator of, or trustee or similar
officer for, a Borrower or any substantial part of its property or otherwise,
all as though such payments had not been made.

                  11.6 Payment of Obligations. Each Parent Guarantor hereby
guarantees that the Obligations will be paid to the Collateral Agent for the
account of the Lenders, the Collateral Agent or the Administrative Agent
entitled thereto without set-off or counterclaim at the office of the Collateral
Agent specified in subsection 14.2.


       SECTION 12.         EVENTS OF DEFAULT

                  If any of the following events shall occur and be continuing:

                  (a) Any Borrower shall fail to pay (i) any principal of any
         Loan or any L/C Obligation when due in accordance with the terms
         thereof or hereof or (ii) any interest on any Loan, any commitment fee
         or any fee or commission relating to any Letter of Credit hereunder
         within three days (in the case of this clause (ii) only) after any such
         interest or other amount becomes due in accordance with the terms
         thereof or hereof; or

                  (b) Any representation or warranty made or deemed made by any
         Borrower or any other Loan Party herein or in any other Loan Document
         or which is contained in any certificate, document or financial or
         other statement furnished by it at any time under or in connection with
         this Agreement or any such other Loan Document shall prove to have been
         incorrect in any material respect on or as of the date made or deemed
         made; or

                  (c) Any Borrower or any other Loan Party shall default in the
         observance or performance of any agreement contained in Section 10 of
         this Agreement or any negative covenant contained in any Security
         Agreement or the Collateral Covenant Agreement; or

                  (d) Any Borrower or any other Loan Party shall default in the
         observance or performance of any other agreement 



                                     -106-

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         contained in this Agreement or any other Loan Document (other than as
         provided in clauses (a) through (c) of this Section 12), and such
         default shall continue unremedied for a period of 30 days; or

                  (e) Any Event of Default shall have occurred and be continuing
         under the US Credit Agreement; or

                  (f) (i)(A) HCNA or any of its Subsidiaries shall default in
         any payment of principal of or interest on any Indebtedness (other than
         Indebtedness owing under this Agreement or the US Credit Agreement) or
         in the payment of any Guarantee Obligation (other than Guarantee
         Obligations under this Agreement or the US Credit Agreement), beyond
         the period of grace, if any, provided in the instrument or agreement
         under which such Indebtedness or Guarantee Obligation was created; or
         (B) HCNA or any of its Subsidiaries shall default in the observance or
         performance of any other agreement or condition relating to any such
         Indebtedness or Guarantee Obligation or contained in any instrument or
         agreement evidencing, securing or relating thereto; or (C) any other
         event shall occur or condition exist, and (ii) the effect of such
         default or other event or condition is to immediately cause, or to
         permit the holder or holders of such Indebtedness or beneficiary or
         beneficiaries of such Guarantee Obligation (or a trustee or agent on
         behalf of such holder or holders or beneficiary or beneficiaries) to
         immediately cause such Indebtedness to become due prior to its stated
         maturity or such Guarantee Obligation to become payable (regardless of
         whether any such holder or beneficiary, as the case may be, has so
         caused such Indebtedness to become due or such Guarantee Obligation to
         become payable); provided that such default or other event or condition
         shall not constitute an Event of Default hereunder unless the sum of
         (x) the aggregate amount of all such Indebtedness which has or could
         become due prior to its stated maturity and (y) the aggregate amount of
         such Guarantee Obligations which have or could become payable as a
         result of all such defaults or other events or conditions which are
         then outstanding exceeds US$5,000,000 (or the Equivalent Amount
         thereof); or

                  (g) (i) HCNA or any of its Subsidiaries shall commence any
         case, proceeding or action, or (in the case of any Canadian Subsidiary)
         file a notice of intention to commence any of the foregoing, (A) under
         any existing or future law of any jurisdiction, domestic or foreign,
         relating to bankruptcy, insolvency, reorganization or relief of
         debtors, seeking to have an order for relief entered with respect to
         it, or seeking to adjudicate it a bankrupt or insolvent, or seeking
         reorganization, arrangement, adjustment, winding-up, liquidation,
         dissolution, composition or other relief with respect to it or its
         debts, or (B) seeking appointment of a receiver, trustee, custodian,
         conservator or other similar 



                                     -107-

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         official for it or for all or any substantial part of its assets, or
         HCNA or any of its Subsidiaries shall make a general assignment for the
         benefit of its creditors; or (ii) there shall be commenced against HCNA
         or any of its Subsidiaries any case, proceeding or action of a nature
         referred to in clause (i) above which (A) results in the entry of an
         order for relief or any such adjudication or appointment or (B) remains
         undismissed, undischarged or unbonded for a period of 60 days; or (iii)
         there shall be commenced against HCNA or any of its Subsidiaries any
         case, proceeding or other action seeking issuance of a warrant of
         attachment, execution, distraint or similar process against all or any
         substantial part of its assets which results in the entry of an order
         for any such relief which shall not have been vacated, discharged, or
         stayed or bonded pending appeal within 60 days from the entry thereof;
         or (iv) HCNA or any of its Subsidiaries shall take any action in
         furtherance of, or indicating its consent to, approval of, or
         acquiescence in, any of the acts set forth in clause (i), (ii), or
         (iii) above; or (v) HCNA or any of its Subsidiaries shall generally
         not, or shall be unable to, or shall admit in writing its inability to,
         pay its debts as they become due or otherwise be insolvent under
         applicable law of any jurisdiction; or

                  (h) (i) Any Person shall engage in any "prohibited
         transaction" (as defined in Section 406 of ERISA or Section 4975 of the
         Code) involving any US Plan, (ii) any "accumulated funding deficiency"
         (as defined in Section 302 of ERISA), whether or not waived, shall
         exist with respect to any US Plan or any Lien in favor of the PBGC or a
         US Plan shall arise on the assets of any Borrower or any Commonly
         Controlled Entity, (iii) a Reportable Event shall occur with respect
         to, or proceedings shall commence to have a trustee appointed, or a
         trustee shall be appointed, to administer or to terminate, any Single
         Employer Plan, which Reportable Event or commencement of proceedings or
         appointment of a trustee is, in the reasonable opinion of the Aggregate
         Required Lenders, likely to result in the termination of such US Plan
         for purposes of Title IV of ERISA, (iv) any Single Employer Plan shall
         terminate for purposes of Title IV of ERISA, (v) any Borrower or any
         Commonly Controlled Entity shall, or in the reasonable opinion of the
         Aggregate Required Lenders is likely to, incur any liability in
         connection with a withdrawal from, or the Insolvency or Reorganization
         of, a Multiemployer Plan or (vi) any other event or condition shall
         occur or exist with respect to a US Plan; and in each case in clauses
         (i) through (vi) above, such event or condition, together with all
         other such events or conditions, if any, could reasonably be expected
         to have a Material Adverse Effect; or

                  (i) One or more judgments or decrees shall be entered against
         HCNA or any of its Subsidiaries involving in the 



                                     -108-

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         aggregate a liability (to the extent not paid or fully covered by
         insurance provided by a carrier who has acknowledged in writing its
         liability under the relevant policy) of HCNA and its Subsidiaries of
         US$1,000,000 (or the Equivalent Amount thereof) or more, and all such
         judgments or decrees shall not have been vacated, discharged, stayed or
         bonded pending appeal within 60 days from the entry thereof; or

                  (j) (i) Any of the Security Documents shall cease, for any
         reason, to be in full force and effect, or any Borrower or any other
         Loan Party which is a party to any of the Security Documents shall so
         assert or (ii) the Lien created by any of the Security Documents shall
         cease to be enforceable and of the same effect and priority purported
         to be created thereby; or

                  (k) Any Guarantee (including, without limitation, any
         Guarantee pursuant to Section 11 of this Agreement) shall cease, for
         any reason, to be in full force and effect or any Guarantor shall so
         assert or the Collateral Covenant Agreement shall cease, for any
         reason, to be in full force and effect or any party thereto shall so
         assert; or

                  (l) (i) A "Change of Control" under (and as defined in) any
         indenture governing the Public Debt shall have occurred or (ii) members
         of the senior management of HCNA and the Guarantors shall own, in the
         aggregate, less than 30% (or such higher percentage as may then be
         necessary to elect a majority of the directors of HCNA) of the issued
         and outstanding Voting Stock of HCG or (iii) any Person or "group"
         (within the meaning of Section 13(d) or 14(d) of the Securities
         Exchange Act of 1934, as amended) shall have acquired beneficial
         ownership of a larger percentage of the Voting Stock of HCG than is
         then beneficially owned by the members of senior management of HCNA and
         the Guarantors; or

                  (m) (i) HCG shall cease to own, beneficially or of record, 80%
         of the issued and outstanding Capital Stock of HCNA or (ii) HCNA or any
         of its wholly owned Subsidiaries shall cease to own, beneficially and
         of record, 100% of the issued and outstanding Capital Stock of each
         Borrower and each Guarantor existing on the Closing Date (other than
         HCNA); or

                  (n) any of the following events, circumstances or conditions
         shall have occurred which, in the aggregate with all other such events,
         circumstances and conditions then outstanding, could reasonably be
         expected to have a Material Adverse Effect and (except to the extent
         that such event, circumstance or condition, as the case may be, is not
         reasonably susceptible to cure by a means which could not reasonably be
         expected to have a Material Adverse Effect) such events, circumstances
         and conditions continue for a 



                                     -109-

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         period of 30 days: (A) a Canadian Pension Plan is not in substantial
         compliance with all applicable pension benefits and tax laws; or (B) a
         Canadian Pension Plan has unfunded liabilities (either on a "going
         concern" or on a "winding up" basis and determined in accordance with
         all applicable laws and using assumptions and methods that are
         appropriate in the circumstances and in accordance with generally
         accepted actuarial principles and practices in Canada); or (C) any
         contribution (including any special payment to amortize any unfunded
         liability) required to be made in accordance with any applicable law or
         the terms of a Canadian Pension Plan has not been made; or (D) an event
         has occurred or a condition exists with respect to any Canadian Pension
         Plan that has resulted or could result in any Canadian Pension Plan
         being ordered or required to be wound up in whole or in part pursuant
         to any applicable laws or having its registration revoked or refused
         for the purposes of any applicable pension benefits or tax laws or
         being placed under the administration of any relevant pension benefits
         required to pay any taxes or penalties under the applicable pension
         benefits and tax laws; or (E) an order has been made or notice has been
         given pursuant to any applicable pension benefits or tax laws in
         respect of any Canadian Pension Plan requiring (or proposing to
         require) any Person to take or refrain from taking any action in
         respect thereof or that there has (or there are circumstances that
         indicate that there has) been a contravention of any such applicable
         laws; or (F) an event has occurred or a condition exists which has
         resulted or could result in any Borrower being required to pay, repay
         or refund any amount (other than contributions required to be made or
         benefits or expenses required to be paid in the ordinary course) to or
         on account of any Canadian Pension Plan or a current or former member
         thereof; or (G) an event has occurred or a condition exists that has
         resulted or could result in a payment being made out of a guarantee
         fund established under the applicable pension benefits laws in respect
         of a Canadian Pension Plan;

then, and in any such event, (A) if such event is an Event of Default specified
in clause (i) or (ii) of Section 12(g) above with respect to any Borrower,
automatically the Commitments shall immediately terminate and the Loans
hereunder (with accrued interest thereon) and all other amounts owing under this
Agreement and all amounts of L/C Obligations, whether or not the beneficiaries
of the then outstanding Letters of Credit shall have presented the documents
required thereunder) and the Loans shall immediately become due and payable, and
(B) if such event is any other Event of Default, either or both of the following
actions may be taken: (i) with the consent of the Aggregate Required Lenders,
the Administrative Agent may, or upon the request of the Aggregate Required
Lenders, the Administrative Agent shall, by notice to the Borrowers declare the
Commitments to be limited, restricted or terminated forthwith, whereupon the




                                     -110-

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Commitments shall immediately so be limited, restricted or terminated; and (ii)
with the consent of the Aggregate Required Lenders, the Administrative Agent
may, or upon the request of the Aggregate Required Lenders, the Administrative
Agent shall, by notice to the Borrowers, declare the Loans hereunder (with
accrued interest thereon) and all other amounts owing under this Agreement and
all amounts of L/C Obligations, whether or not the beneficiaries of the then
outstanding Letters of Credit shall have presented the documents required
thereunder) and the Loans to be due and payable forthwith, whereupon the same
shall immediately become due and payable (the date of any termination or
declaration referred to in this paragraph, the "Acceleration Date").

                  Except as expressly provided above in this Section 12,
presentment, demand, protest and all other notices of any kind are hereby
expressly waived.


       SECTION 13.         THE ADMINISTRATIVE AGENT AND THE COLLATERAL AGENT

                  13.1 Appointment. Each Lender hereby irrevocably designates
and appoints GE Capital Canada as its Administrative Agent and its Collateral
Agent under this Agreement and the other Loan Documents. Each such Lender
irrevocably authorizes GE Capital Canada (as its Administrative Agent or its
Collateral Agent, as the case may be), to take such action on its behalf under
the provisions of this Agreement and the other Loan Documents and to exercise
such powers and perform such duties as are expressly delegated to the
Administrative Agent or the Collateral Agent, as the case may be, by the terms
of this Agreement and the other Loan Documents, together with such other powers
as are reasonably incidental thereto. Notwithstanding any provision to the
contrary elsewhere in this Agreement, neither the Administrative Agent nor the
Collateral Agent shall have any duties or responsibilities, except those
expressly set forth herein, nor any fiduciary relationship with any Lender, and
no implied covenants, functions, responsibilities, duties, obligations or
liabilities shall be read into this Agreement or any other Loan Document or
otherwise exist against the Administrative Agent or the Collateral Agent.

                  13.2 Delegation of Duties. (a) Each of the Administrative
Agent and the Collateral Agent may execute any of its duties under this
Agreement and the other Loan Documents by or through agents or attorneys-in-fact
and shall be entitled to advice of counsel concerning all matters pertaining to
such duties. Neither the Administrative Agent nor the Collateral Agent shall be
responsible for the negligence or misconduct of any agents or attorneys in-fact
selected by it with reasonable care.



                                     -111-

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                  (b) The Lenders hereby designate the Collateral Agent to act,
and the Collateral Agent hereby accepts such designation to act, as the Lenders'
nominee and agent to hold for the Lenders' benefit all Collateral that may from
time to time be in the possession or control of the Collateral Agent, including
(to the extent authorized under the Security Documents), without limitation, all
lock box, cash collateral and regular or special deposit or collateral accounts
containing from time to time proceeds of, or otherwise constituting, Collateral.

                  (c) Subject to the provisions of subsections and 14.14 and the
other terms hereof, each of the Lenders hereby irrevocably authorizes the
Collateral Agent to take such action for the benefit of the Lenders under the
provisions of the Security Documents and to exercise such powers and remedies
and to perform such duties hereunder and thereunder as are specifically provided
or delegated to or required of the Collateral Agent by the terms hereof and
thereof and such other powers as are reasonably incidental thereto, and
undertakes not to take any action on its own with respect to the Security
Documents or the Collateral.

                  13.3 Exculpatory Provisions. Neither the Administrative Agent
nor the Collateral Agent (nor any of the officers, directors, employees, agents,
attorneys-in-fact or Affiliates of either) shall be (i) liable for any action
taken or omitted to be taken by it or such Person under or in connection with
this Agreement or any other Loan Document (except for its or such Person's own
gross negligence or willful misconduct) or (ii) responsible in any manner to any
of the Lenders for any recitals, statements, representations or warranties made
by any Guarantor, any Borrower or any officer thereof contained in this
Agreement or any other Loan Document or in any certificate, report, statement or
other document referred to or provided for in, or received by the Administrative
Agent or the Collateral Agent under or in connection with, this Agreement or any
other Loan Document or for the value, validity, effectiveness, genuineness,
enforceability or sufficiency of this Agreement or the Notes or any other Loan
Document or for any failure of any Guarantor or any Borrower to perform its
obligations hereunder or thereunder. Neither the Administrative Agent nor the
Collateral Agent shall be under any obligation to any Lender to ascertain or to
inquire as to the observance or performance of any of the agreements contained
in, or conditions of, this Agreement or any other Loan Document, or to inspect
the properties, books or records of any Guarantor or any Borrower.

                  13.4 Reliance by Administrative Agent and Collateral Agent.
Each of the Administrative Agent and the Collateral Agent shall be entitled to
rely, and shall be fully protected in relying, upon any Note, writing,
resolution, notice, consent, certificate, affidavit, letter, telecopy, telex or
teletype message, statement, order or other document or conversation believed by
it to be genuine and correct and to have been signed, 



                                     -112-

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sent or made by the proper Person or Persons and upon advice and statements of
legal counsel (including, without limitation, counsel to any Guarantor or any of
the Borrowers), independent accountants and other experts selected by the
Administrative Agent or the Collateral Agent, as the case may be. Each of the
Administrative Agent and the Collateral Agent may deem and treat the payee of
any Note as the owner thereof for all purposes unless a written notice of
assignment, negotiation or transfer thereof shall have been filed with the
Administrative Agent (with a copy delivered to the Collateral Agent). Each of
the Administrative Agent and the Collateral Agent shall be fully justified in
failing or refusing to take any action under this Agreement or any other Loan
Document unless it shall first receive such advice or concurrence of the
Aggregate Required Lenders, the Required Lenders or the Majority Lenders, as the
case may be, as it deems appropriate or it shall first be indemnified to its
satisfaction by the Lenders against any and all liability and expense which may
be incurred by it by reason of taking or continuing to take any such action.
Each of the Administrative Agent and the Collateral Agent shall in all cases be
fully protected in acting, or in refraining from acting, under this Agreement
and the Notes and the other Loan Documents in accordance with a request of the
Required Lenders (or such other number of Lenders as may be required pursuant to
the Loan Documents), and such request and any action taken or failure to act
pursuant thereto shall be binding upon all the Lenders and all future holders of
the Notes.

                  13.5 Notice of Default. Neither the Administrative Agent nor
the Collateral Agent shall be deemed to have knowledge or notice of the
occurrence of any Default or Event of Default hereunder unless the
Administrative Agent or the Collateral Agent, as the case may be, has received
notice from a Lender or a Borrower referring to this Agreement, describing such
Default or Event of Default and stating that such notice is a "notice of
default". In the event that the Administrative Agent receives such a notice, the
Administrative Agent shall give notice thereof to the Lenders and the Collateral
Agent. The Administrative Agent shall take such action with respect to such
Default or Event of Default as shall be reasonably directed by the requisite
number of Lenders hereunder and, to the extent required hereby, the requisite
number of Lenders under (and as defined in) the US Credit Agreement and the
Collateral Agent shall take such action with respect to such Default or Event of
Default as shall be reasonably directed by the requisite number of Lenders
hereunder and, to the extent required hereby, the requisite number of Lenders
under (and as defined in) the US Credit Agreement (which, to the extent provided
herein or in the relevant Security Document, may be no Lenders); provided that
unless and until it shall have received such directions, the Administrative
Agent or the Collateral Agent, as the case may be, may (but shall not be
obligated to) take such action, or refrain from taking such action, with
respect to such Default or Event of Default as it shall deem advisable in the
best interests of the Lenders.



                                     -113-

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                  13.6 Non-Reliance on Administrative Agent, Collateral Agent
and Other Lenders. Each Lender expressly acknowledges that neither the
Administrative Agent nor the Collateral Agent (nor any of the officers,
directors, employees, agents, attorneys-in-fact or Affiliates of either) has
made any representations or warranties to it and that no act by the
Administrative Agent or the Collateral Agent hereinafter taken, including any
review of the affairs of any of the Guarantors or any of the Borrowers, shall be
deemed to constitute any representation or warranty by the Administrative Agent
or the Collateral Agent to any Lender. Each Lender represents to the
Administrative Agent and the Collateral Agent that it has, independently and
without reliance upon the Administrative Agent, the Collateral Agent or any
other Lender, and based on such documents and information as it has deemed
appropriate, made its own appraisal of and investigation into the business,
operations, property, financial and other condition and creditworthiness of each
Guarantor and made its own decision to make its extensions of credit hereunder
and enter into this Agreement. Each Lender also represents that it will,
independently and without reliance upon the Administrative Agent, the Collateral
Agent or any other Lender, and based on such documents and information as it
shall deem appropriate at the time, continue to make its own credit analysis,
appraisals and decisions in taking or not taking action under this Agreement and
the other Loan Documents, and to make such investigation as it deems necessary
to inform itself as to the business, operations, property, financial and other
condition and creditworthiness of the Guarantors and of the Borrowers. Except
for notices, reports and other documents expressly required to be furnished to
the Lenders by the Administrative Agent or the Collateral Agent hereunder,
neither the Administrative Agent nor the Collateral Agent, as the case may be,
shall have any duty or responsibility to provide any Lender with any credit or
other information concerning the business, operations, property, condition
(financial or otherwise), prospects or creditworthiness of any Guarantor or any
Borrower which may come into the possession of the Administrative Agent or the
Collateral Agent (or any of the officers, directors, employees, agents,
attorneys-in-fact or Affiliates of either).

                  13.7 Indemnification. The Lenders agree to indemnify each of
the Administrative Agent and the Collateral Agent in its respective capacity as
such (to the extent not reimbursed by the Borrowers and without limiting the
obligation of the Borrowers to do so), ratably according to their respective
Commitment Percentages in effect on the date on which indemnification is sought
under this subsection 13.7 (or, if indemnification is sought after the date upon
which the Commitments shall have terminated and the Loans shall have been paid
in full, ratably in accordance with their Commitment Percentages immediately
prior to such date), from and against any and all liabilities, obligations,
losses, damages, penalties, actions, judgments, suits, costs, expenses or
disbursements of any kind whatsoever which may at any time (including, without
limitation, at any time 




                                     -114-

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following the payment of the Notes) be imposed on, incurred by or asserted
against the Administrative Agent or the Collateral Agent, as the case may be, in
any way relating to or arising out of this Agreement, any of the other Loan
Documents or any documents contemplated by or referred to herein or therein or
the transactions contemplated hereby or thereby or any action taken or omitted
by the Administrative Agent or the Collateral Agent under or in connection with
any of the foregoing; provided that no Lender shall be liable for the payment of
any portion of such liabilities, obligations, losses, damages, penalties,
actions, judgments, suits, costs, expenses or disbursements resulting solely
from the Administrative Agent's or the Collateral Agent's, as the case may be,
gross negligence or willful misconduct. The agreements in this subsection 13.7
shall survive the payment of the Notes and all other amounts payable hereunder.

                  13.8 Administrative Agent and Collateral Agent. Each of the
Administrative Agent and the Collateral Agent in its individual capacity (and
the Affiliates of each) may make loans to, accept deposits from and generally
engage in any kind of business with the Borrowers as though it were not the
Administrative Agent or the Collateral Agent, as the case may be, hereunder and
under the other Loan Documents. With respect to its Loans made or renewed by it
and any Note issued to it and with respect to any Letter of Credit issued or
participated in by it, each of the Administrative Agent and the Collateral Agent
shall have the same rights and powers under this Agreement and the other Loan
Documents as any Lender and may exercise the same as though it were not the
Administrative Agent or the Collateral Agent, as the case may be, and the terms
"Lender" and "Lenders" shall include each of the Administrative Agent and the
Collateral Agent.

                  13.9 Successor Administrative Agent and Collateral Agent. Each
of the Administrative Agent and the Collateral Agent may resign as
Administrative Agent or Collateral Agent, as the case may be, upon 10 days'
notice to the Lenders and the Borrowers. If the Administrative Agent or the
Collateral Agent shall so resign, then the Majority Lenders shall appoint from
among the Lenders a successor administrative agent or collateral agent, as the
case may be, for the Lenders, which successor administrative agent or collateral
agent shall be subject to the approval of the Borrowers (which approval shall
not be unreasonably withheld), whereupon such successor administrative agent or
collateral agent shall succeed to the rights, powers and duties of the
Administrative Agent or the Collateral Agent, as the case may be, and the term
"Administrative Agent" or "Collateral Agent" shall mean such successor
administrative agent or collateral agent effective upon such appointment and
approval, and the rights, powers and duties of the former Administrative Agent
or Collateral Agent (in its capacity as such), as the case may be, shall be
terminated, without any other or further act or deed on the part of such former
Administrative Agent or Collateral Agent or any of the parties to this Agreement
or any 



                                     -115-

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holders of the Notes. The resignation of the Administrative Agent or the
Collateral Agent shall not be effective until a successor administrative agent
or a successor collateral agent, as the case may be, shall have been so
appointed and approved. After any retiring Administrative Agent's or Collateral
Agent's resignation as such, the provisions of this Section 13 shall inure to
its benefit as to any actions taken or omitted to be taken by it while it was
Administrative Agent or Collateral Agent, as the case may be, under this
Agreement and the other Loan Documents.


       SECTION 14.         MISCELLANEOUS

                  14.1 Amendments and Waivers. Neither this Agreement, any
Revolving Credit Note or any other Loan Document, nor any terms hereof or
thereof may be amended, restated, supplemented or modified except in accordance
with the provisions of this subsection 14.1. The Aggregate Required Lenders may,
or, with the written consent of the Aggregate Required Lenders, the
Administrative Agent may, from time to time, (a) enter into with the Borrowers
written amendments, supplements or modifications hereto and to the Revolving
Credit Notes and the other Loan Documents for the purpose of adding any
provisions to this Agreement, the Revolving Credit Notes or the other Loan
Documents or changing in any manner the rights of the Lenders or of any Borrower
hereunder or thereunder or (b) waive, on such terms and conditions as the
Aggregate Required Lenders or the Administrative Agent, as the case may be, may
specify in such instrument, any of the requirements of this Agreement, the
Revolving Credit Notes or the other Loan Documents or any Default or Event of
Default and its consequences; provided, however, that no such waiver and no such
amendment, supplement or modification shall:

                  (i) reduce the amount or extend the scheduled date of maturity
         of any Revolving Credit Note or of any installment thereof, or reduce
         the stated rate of any interest or fee payable hereunder or extend the
         scheduled date of any payment thereof or extend the expiration date of
         any Lender's Commitment, in each case without the consent of each
         Lender directly affected thereby; or

                  (ii) amend, modify or waive any provision of this subsection
         14.1 or reduce the percentage specified in the definition of Aggregate
         Required Lenders, Required Lenders or Majority Lenders, or consent to
         the assignment or transfer by any Borrower of any of its rights and
         obligations under this Agreement and the other Loan Documents or
         release all or substantially all of the Collateral or increase the
         amount of any Lender's Commitment or increase the percentages set forth
         as the advance rates in the definition of "Borrowing Base" contained in




                                     -116-

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         subsection 1.1, in each case without the written consent of all the
         Lenders; or

                  (iii) amend, modify or waive any provision of Section 13 or
         any other provision of this Agreement governing the rights or
         obligations of the Administrative Agent or the Collateral Agent without
         the written consent of the then Administrative Agent or the then
         Collateral Agent, as the case may be; or

                  (iv) amend, modify or waive any provision of Section 4 or any
         other provision of this Agreement governing the rights or obligations
         of any L/C Issuer without the written consent of each L/C Issuer that
         (1) is a Lender and (2) is adversely affected by such amendment,
         modification or waiver; or

                  (v) amend, modify or waive any provision of Section 5 or any
         other provision of this Agreement governing the rights or obligations
         of the Swing Line Lender without the written consent of the Swing Line
         Lender.

Any such waiver and any such amendment, supplement or modification shall apply
equally to each of the Lenders and shall be binding upon the Borrowers, the
Lenders, the Administrative Agent, the Collateral Agent and all future holders
of the Loans. In the case of any waiver, the Borrowers, the Lenders, the
Collateral Agent and the Administrative Agent shall be restored to their former
position and rights hereunder and under the outstanding Revolving Credit Notes
and any other Loan Documents, and any Default or Event of Default waived shall
be deemed to be cured and not continuing; but no such waiver shall extend to any
subsequent or other Default or Event of Default, or impair any right consequent
thereon.

                  14.2 Notices. All notices, requests, demands and other
communications provided for hereunder to or upon the respective parties hereto
to be effective shall be in writing (including by telecopy), and, unless
otherwise expressly provided herein, shall be deemed to have been duly given or
made when delivered by hand or by overnight courier or 7 days after being
deposited in the mail, postage prepaid, or, in the case of telecopy notice, when
received, addressed as follows in the case of Sifto, the Collateral Agent, the
Administrative Agent and the Parent Guarantors, and as set forth in the Joinder
Agreement in the case of the Subsequent Borrower and as set forth in Schedule I
in the case of the other parties hereto, or to such other address as may be
hereafter notified by the respective parties hereto and any future holders of
the Notes:



                                     -117-

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         Sifto:                Sifto Canada Inc.
                               c/o Harris Chemical North America, Inc.
                               399 Park Avenue
                               New York, New York  10022
                               Attention: Senior Vice President - Treasurer
                               Telecopy: (212) 207-6440

         with a copy to:

                               Winthrop, Stimson, Putnam & Roberts
                               One Battery Park Plaza
                               New York, New York  10004
                               Attention:  F. Joseph Owens, Jr., Esq.
                               Telecopy:  (212) 858-1500


         The Collateral
            Agent:             General Electric Capital Canada Inc.
                               2300 Meadowvale Boulevard
                               Mississauga, Ontario
                               Canada  L5N 5P9
                               Attention:  Vice President and Counsel
                               Telecopy:  (905) 858-5456

         with a copy to:

                               General Electric Capital Corporation
                               201 High Ridge Road
                               Stamford, Connecticut  06927-5100
                               Attention:  Regional Counsel - Commercial Finance
                               Telecopy:  (203) 316-7893



         The Administrative
             Agent:            General Electric Capital Canada Inc.
                               2300 Meadowvale Boulevard
                               Mississauga, Ontario
                               Canada  L5N 5P9
                               Attention:  Vice President and Counsel
                               Telecopy:  (905) 858-5456

          with a copy to:

                               General Electric Capital Corporation
                               201 High Ridge Road
                               Stamford, Connecticut  06927-5100
                               Attention:  Regional Counsel - Commercial Finance
                               Telecopy:  (203) 316-7893

 

                                     -118-

<pg$pcn>
        The Parent
             Guarantors:   c/o Harris Chemical North America, Inc.
                           399 Park Avenue
                           New York, New York  10022
                           Attention: Senior Vice President-Treasurer
                           Telecopy: (212) 207-6440

provided that any notice, request or demand to or upon the Administrative Agent,
the Collateral Agent or the Lenders pursuant to subsections 2.3, 3.2, 3.3, 3.5,
3.6, 4.2, 4.5, 5.3, 6.2, 6.3, 6.6, 6.11(b), 6.15 or 6.16 shall not be effective
until received.

                  14.3 No Waiver; Cumulative Remedies. No failure to exercise
and no delay in exercising, on the part of the Collateral Agent, the
Administrative Agent or any Lender, any right, remedy, power or privilege
hereunder or under the other Loan Documents shall operate as a waiver thereof;
nor shall any single or partial exercise of any right, remedy, power or
privilege hereunder preclude any other or further exercise thereof or the
exercise of any other right, remedy, power or privilege. The rights, remedies,
powers and privileges herein provided are cumulative and not exclusive of any
rights, remedies, powers and privileges provided by law.

                  14.4 Survival of Representations and Warranties. All
representations and warranties made hereunder, in the other Loan Documents and
in any document, certificate or statement delivered pursuant hereto or in
connection herewith shall survive the execution and delivery of this Agreement
and the Notes and the making of the Loans hereunder.

                  14.5  Payment of Expenses and Taxes.  The Borrowers agree to:

                  (a) pay or reimburse each of the Administrative Agent and the
         Collateral Agent for all of their reasonable out-of-pocket costs and
         expenses incurred in connection with the development, preparation and
         execution of this Agreement, the Notes and the other Loan Documents and
         any other documents prepared in connection herewith or therewith, and
         the consummation of the transactions contemplated hereby and thereby,
         including, without limitation, the reasonable fees and disbursements of
         the several counsel to the Administrative Agent and the Collateral
         Agent;

                  (b) pay or reimburse the Administrative Agent and (only to the
         extent that such amendment, supplement, modification or administration
         directly relates to (x) the Collateral, (y) the responsibilities of the
         Collateral Agent in its capacity as such or (z) the occurrence and
         continuance of a Default or an Event of Default) the 



                                     -119-

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         Collateral Agent for all of their reasonable out-of-pocket costs and
         expenses incurred in connection with any amendment, supplement or
         modification to, and the administration of, this Agreement, the Notes
         and the other Loan Documents and any other documents prepared in
         connection herewith or therewith, and the transactions contemplated
         hereby and thereby, including, without limitation, the reasonable fees
         and disbursements of counsel to the Administrative Agent and (only to
         the extent that such amendment, supplement, modification or
         administration directly relates to (x) the Collateral, (y) the
         responsibilities of the Collateral Agent in its capacity as such or (z)
         the occurrence and continuance of a Default or an Event of Default)
         counsel to the Collateral Agent;

                  (c) pay or reimburse each Lender, the Collateral Agent and the
         Administrative Agent for all of their reasonable costs and expenses
         incurred in connection with the enforcement or preservation of any
         rights under this Agreement, the Notes, the other Loan Documents and
         any such other documents, and for any reasonable costs and expenses
         incurred in connection with any proceedings under any bankruptcy,
         reorganization, compromise, arrangement, insolvency, restructuring,
         debt, dissolution or liquidation or similar law; provided that, in the
         case of fees and expenses of counsel to the Lenders, the Collateral
         Agent and the Administrative Agent, the Borrowers shall be obligated
         under this subsection 14.5(c) to pay only the reasonable fees and
         disbursements of a single special counsel and any necessary local
         counsel to the Administrative Agent, the Collateral Agent and the
         Lenders collectively (or in the event that any such enforcement or
         preservation of rights involves matters in which the interests of the
         Administrative Agent, the Collateral Agent and the Lenders are
         materially distinct, a single special counsel and any necessary local
         counsel to the Administrative Agent, a single special counsel and any
         necessary local counsel to the Collateral Agent and a single special
         counsel and any necessary local counsel to the Lenders taken as a
         whole); provided that in each case the foregoing obligations shall
         apply to no more than one local counsel per jurisdiction;

                  (d) pay, indemnify, and hold each Lender, the Collateral Agent
         and the Administrative Agent harmless from, any and all recording and
         filing fees and any and all liabilities with respect to, or resulting
         from any delay in paying, stamp, excise and other taxes (other than
         income taxes), if any, which may be payable or determined to be payable
         in connection with the execution and delivery of, or consummation or
         administration of any of the transactions contemplated by, or any
         amendment, supplement or modification of, or any waiver or consent
         under or in respect of, this Agreement, the Notes, the other Loan



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         Documents and any such other documents prepared in connection herewith 
         or therewith;

                  (e) subject to the foregoing provisions of this subsection
         14.5 with respect to the payment of costs, expenses and disbursements
         for the matters expressly specified therein, pay, indemnify, and hold
         each Lender, the Collateral Agent and the Administrative Agent harmless
         from and against any and all other liabilities, obligations, losses,
         damages, penalties, actions, judgments, suits, and related reasonable
         costs, expenses or disbursements of any kind or nature whatsoever with
         respect to the execution, delivery, enforcement, performance and
         administration of this Agreement, the Notes, the other Loan Documents
         and any such other documents prepared in connection herewith or
         therewith, including, without limitation, any of the foregoing relating
         to the violation of, noncompliance with or liability under, any
         Environmental Law applicable to the operations of any Borrower, any of
         its Subsidiaries or any of the Properties (all the foregoing in this
         clause (e), collectively, the "indemnified liabilities"), provided,
         that no Borrower shall have any obligation hereunder to the
         Administrative Agent, the Collateral Agent or any Lender with respect
         to indemnified liabilities arising from (i) the gross negligence or
         willful misconduct of the Administrative Agent, the Collateral Agent or
         any such Lender or (ii) legal proceedings commenced against the
         Administrative Agent, the Collateral Agent or any such Lender by any
         security holder or creditor thereof arising out of and based upon
         rights afforded any such security holder or creditor solely in its
         capacity as such;

                  (f) subject to the foregoing provisions of this subsection
         14.5 with respect to the payment of costs, expenses and disbursements
         for the matters expressly specified therein, pay, indemnify and hold
         the Administrative Agent and each Lender harmless from and against any
         and all other liabilities, obligations, losses, damages, penalties,
         actions, judgments, suits, and related reasonable costs, expenses or
         disbursements of any kind or nature whatsoever with respect to the
         failure of the Administrative Agent or any Lender seeking
         indemnification or of any L/C Issuer to honor a demand for payment
         under any Letter of Credit or guaranty thereof as a result of
         compliance by the Administrative Agent or any such Lender or L/C Issuer
         (or any corporation controlling such Person) with any request or
         directive (whether or not having the force of law) from any present or
         future de jure or de facto government or Governmental Authority,
         provided, that no Borrower shall have an obligation hereunder to the
         Administrative Agent or any Lender with respect to any such indemnified
         liabilities arising from the gross negligence or willful misconduct of
         the Administrative Agent or such Lender, as the case may be; and



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                  (g) the agreements in this subsection 14.5 shall survive
         repayment of the Notes and all other amounts payable hereunder.

                  14.6 Successors and Assigns; Participations and Assignments.
(a) This Agreement shall be binding upon and inure to the benefit of the
Borrowers, the Lenders, the Administrative Agent, the Collateral Agent, all
other parties to this Agreement, all future holders of the Notes and their
respective successors and assigns, except that no Borrower may
assign or transfer any of its rights or obligations under this Agreement without
the prior written consent of each Lender.

                  (b) Any Lender may, in the ordinary course of its business and
in accordance with applicable law, at any time sell to one or more banks or
other entities ("Participants") participating interests in any Loan owing to
such Lender, any Note held by such Lender, any Commitment of such Lender or any
other interest of such Lender hereunder and under the other Loan Documents
provided, that such Participant shall be a Qualifying Canadian Institution. In
the event of any such sale by a Lender of a participating interest to a
Participant:

                  (i) such Lender's obligations under this Agreement to the
         other parties to this Agreement shall remain unchanged, such Lender
         shall remain solely responsible for the performance thereof;

                  (ii) such Lender shall remain the holder of any such Note for
         all purposes under this Agreement and the other Loan Documents;

                  (iii) the Borrowers and the Administrative Agent shall
         continue to deal solely and directly with such Lender in connection
         with such Lender's rights and obligations under this Agreement and the
         other Loan Documents; and

                  (iv) such Participant shall have no right to enforce the
         obligations of any Borrower or any other Loan Party relating to the
         Obligations or to approve any amendment, modification or waiver of any
         provision of this Agreement, other than any amendment, modification,
         supplement or waiver decreasing any fees payable hereunder or the
         amount of principal of or the rate at which interest is payable on the
         Loans and L/C Obligations, extending the scheduled final maturity of
         the Loans or any date scheduled for payment of interest on the Loans or
         any fees, extending the Commitments or releasing any material
         Collateral or Guarantee; provided in the case of any of the foregoing,
         that the interests held by such Participant are directly affected by
         such amendment, modification, supplement or waiver.

Each Borrower agrees that if amounts outstanding under this Agreement and the
Notes are due or unpaid, or shall have been 




                                     -122-

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declared or shall have become due and payable upon the occurrence of an Event of
Default, each Participant shall be deemed to have the right of setoff in respect
of its participating interest in amounts owing under this Agreement and any Note
to the same extent as if the amount of its participating interest were owing
directly to it as a Lender under this Agreement or any Note, provided that, in
purchasing such participating interest, such Participant shall be deemed to have
agreed to share with the Lenders the proceeds thereof as provided in subsection
14.7(a) as fully as if it were a Lender hereunder. Each Borrower also agrees
that each Participant shall be entitled to the benefits of subsections 6.13,
6.14 and 6.16 with respect to its participation in the Commitments and the Loans
outstanding from time to time as if it was a Lender; provided that, in the case
of subsection 6.14, such Participant shall have complied with the requirements
of said subsection 6.14 and provided, further, that no Participant shall be
entitled to receive any greater amount pursuant to any such subsection than the
transferor Lender would have been entitled to receive in respect of the amount
of the participation transferred by such transferor Lender to such Participant
had no such transfer occurred.

                  (c) Any Lender may, in the ordinary course of its business and
in accordance with applicable law, at any time and from time to time assign to
(an "Assignee"):

                  (i) any Lender or any affiliate thereof, with the consent of
         the Administrative Agent (which shall not be unreasonably withheld); or

                  (ii) to an additional bank, financial institution, commercial
         bank or near-bank, with the consent of the Administrative Agent and the
         Borrowers (which shall not be unreasonably withheld) and, except as set
         forth in subsection 14.6(e), shall not require the making of any
         additional payment to the Administrative Agent or any Borrower),
         provided that such consent of the Borrowers shall not be required at
         any time when an Event of Default has occurred and is continuing;

all or any part of its rights and obligations under this Agreement and the Notes
pursuant to an assignment and acceptance, substantially in the form of Exhibit F
(an "Assignment and Acceptance"), executed by such Assignee, such assigning
Lender and the Administrative Agent (and, in the case of an Assignee that is not
then a Lender or an affiliate thereof, by the Borrowers) and delivered to the
Administrative Agent for its acceptance and recording in the Register; provided
that:

                  (x)  such Assignee is a Qualifying Canadian Institution;

                  (y) in the case of any such assignment to an Assignee which is
         not a Lender or an Affiliate thereof (before giving 



                                     -123-

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         effect to such assignment), (i) the sum of the portion of the Aggregate
         Commitment hereunder and the portion of the Aggregate Commitment under
         (and as defined in) the US Credit Agreement which are so assigned to
         such Assignee shall be not less than US$5,000,000 (or the Equivalent
         Amount thereof) and (ii) unless such assignment is of all of such
         assigning Lender's Commitment, such assigning Lender shall (after
         giving effect to such assignment) have a Commitment under the US Credit
         Agreement and a Commitment under (and as defined in) this Agreement of
         not less than US$5,000,000 (or the Equivalent Amount thereof) in the
         aggregate; and

                  (z) Notwithstanding the provisions of clause (y)(ii) above, no
         such assignment shall be permitted hereunder if such assigning Lender
         (or any Affiliate thereof) (1) holds any Commitment, or other rights or
         obligations, under (and as defined in) this Agreement and (2) will,
         after giving effect to such assignment hereunder, have a Commitment
         under the US Credit Agreement (and as defined therein) of less than
         US$5,000,000 (or the Equivalent Amount thereof).

Upon such execution, delivery, acceptance and recording, from and after the
effective date determined pursuant to such Assignment and Acceptance, (x) the
Assignee thereunder shall be a party hereto and, to the extent provided in such
Assignment and Acceptance, have the rights and obligations of a Lender hereunder
with a Commitment as set forth therein, and (y) the assigning Lender thereunder
shall, to the extent provided in such Assignment and Acceptance, be released
from its obligations under this Agreement (and, in the case of an Assignment and
Acceptance covering all or the remaining portion of an assigning Lender's rights
and obligations under this Agreement, such assigning Lender shall cease to be a
party hereto).

                  (d) The Administrative Agent shall maintain at its address
referred to in subsection 14.2 a copy of each Assignment and Acceptance
delivered to it and a register (the "Register") for the recordation of the names
and addresses of the Lenders and the Commitment of, and principal amount of the
Loans owing to, each Lender from time to time. The entries in the Register shall
be conclusive, in the absence of manifest error, and the Borrowers, the
Administrative Agent, the Collateral Agent and the Lenders may treat each Person
whose name is recorded in the Register as the owner of the Loan recorded therein
for all purposes of this Agreement. The Register shall be available for
inspection by any Borrower or any Lender at any reasonable time and from time to
time upon reasonable prior notice.

                  (e) Upon its receipt of an Assignment and Acceptance executed
by an assigning Lender, an Assignee and the Administrative Agent (and, in the
case of an Assignee that is not then a Lender or an affiliate thereof, by the
Borrowers), together with payment to the Administrative Agent of a registration
and processing fee of US$3,000 (or the Equivalent 



                                     -124-

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Amount thereunder) (or, in the case of an Assignee which is then a Lender or an
affiliate thereof, US$500) (or the Equivalent Amount thereunder), the
Administrative Agent shall (i) promptly accept such Assignment and Acceptance
and (ii) on the effective date determined pursuant thereto record the
information contained therein in the Register and give notice of such acceptance
and recordation to the Lenders and the Borrowers. Promptly following receipt of
such notice, each Borrower, at its own expense, shall execute and deliver to the
Administrative Agent (in exchange for the Revolving Credit Note of the assigning
Lender) a new Revolving Credit Note to the order of such Assignee in an amount
equal to the Commitment assumed by it pursuant to such Assignment and Acceptance
and, if the assigning Lender has retained a Commitment hereunder, a new
Revolving Credit Note to the order of the assigning Lender in an amount equal to
the Commitment retained by it hereunder. Such new Notes shall be dated the
Original Closing Date and shall otherwise be in the form of the Note replaced
thereby.

                  (f) Each Parent Guarantor and each Borrower authorizes each
Lender to disclose to any Participant or Assignee (each, a "Transferee") and any
prospective Transferee any and all financial information in such Lender's
possession concerning the Parent Guarantors, the Borrowers, their Subsidiaries
and their Affiliates which has been delivered to such Lender by or on behalf of
any Parent Guarantor or any Borrower pursuant to this Agreement or which has
been delivered to such Lender by or on behalf of any Parent Guarantor or any
Borrower in connection with such Lender's credit evaluation of the Borrowers and
their Affiliates prior to becoming a party to this Agreement; provided that each
such Transferee or prospective Transferee, as the case may be, agrees to be
bound by the same standard of confidentiality as is required of such Lender
hereunder and under the other Loan Documents.

                  14.7 Adjustments; Set-off. (a) If any Lender (a "benefitted
Lender") shall at any time receive any payment of all or part of its Loans or
the L/C Obligations owing to it, or interest thereon, or receive any collateral
(including, without limitation, any "security" (as defined under Section 426 or
427 of the Bank Act (Canada)) provided to it pursuant hereto) in respect thereof
(whether voluntarily or involuntarily, by set-off, pursuant to events or
proceedings of the nature referred to in Section 12(g) or otherwise), in a
greater proportion than any such payment to or collateral received by any other
Lender, if any, in respect of such other Lender's Loans or the L/C Obligations
owing to it, or interest thereon, such benefitted Lender shall purchase for cash
from the other Lenders a participating interest (except that, in the case of any
Bank Act Security, such benefitted Lenders shall instead so purchase an
assignment) in such portion of each such other Lender's Loan or the L/C
Obligations owing to it, or (other than with respect to Bank Act Security
provided to it hereunder) shall provide such other Lenders with the benefits of
any such collateral, or the 



                                     -125-

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proceeds thereof, as shall be necessary to cause such benefitted Lender to share
the excess payment or benefits of such collateral or proceeds ratably with each
of the Lenders; provided, however, that if all or any portion of such excess
payment or benefits is thereafter recovered from such benefitted Lender, such
purchase shall be rescinded, and the purchase price and benefits returned, to
the extent of such recovery, but without interest.

                  (b) In addition to any rights and remedies of the Lenders
provided by law, each Lender shall have the right, without prior notice to any
Borrower, any such notice being expressly waived by each Borrower to the extent
permitted by applicable law, upon any amount becoming due and payable by any
Borrower hereunder or under the Notes (whether at the stated maturity, by
acceleration or otherwise) to set-off and appropriate and apply against such
amount any and all deposits (general or special, time or demand, provisional or
final), in any currency, and any other credits, indebtedness or claims, in any
currency, in each case whether direct or indirect, absolute or contingent,
matured or unmatured, at any time held or owing by such Lender or any branch or
agency thereof to or for the credit or the account of any Borrower. Each Lender
agrees promptly to notify the relevant Borrower and the Administrative Agent
after any such set-off and application made by such Lender, provided that the
failure to give such notice shall not affect the validity of such set-off and
application.

                  14.8 Designation Under Senior Subordinated Notes. HCNA hereby
irrevocably agrees that all amounts from time to time outstanding under this
Agreement, the Applications and the Notes and all other Obligations, and any
refinancing, refunding or renewal thereof, shall be deemed to be and shall be
"Designated Senior Debt" for purposes of (and as defined in) the Senior
Subordinated Notes. HCNA hereby represents and warrants that it has provided
written notice of such designation to IBJ Schroder Bank & Trust Company, as
trustee under the indenture governing the Senior Subordinated Notes and hereby
covenants promptly to take any such action as may be necessary or as otherwise
reasonably may be requested by the Administrative Agent in order to maintain
such designation.

                  14.9 Judgment. The Obligations of each Borrower and Guarantor
in respect of any amount expressed by this Agreement to be payable in US Dollars
which is owing to any party pursuant to this Agreement, any Note, any
Application or any other Loan Document shall, notwithstanding any judgment in a
currency (the "judgment currency") other than US Dollars, be discharged only to
the extent that on the Business Day following receipt by such party or such
holder (as the case may be) of any sum adjudged to be so due in the judgment
currency such party or such holder (as the case may be) may in accordance with
normal banking procedures purchase US Dollars with the judgment currency; if the
amount of US Dollars so purchased is less than the sum originally due to such
party or such holder (as the case may be) in US Dollars, the 



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Borrower agrees, as a separate obligation and notwithstanding any such judgment,
to indemnify such party or such holder (as the case may be) against such loss,
and if the amount of US Dollars so purchased exceeds the sum originally due to
any party to this Agreement or any holder of Notes (as the case may be), such
party or such holder (as the case may be), agrees to remit to the Borrower, such
excess.

                  14.10 Counterparts. This Agreement may be executed by one or
more of the parties to this Agreement on any number of separate counterparts
(including by telecopy), and all of said counterparts taken together shall be
deemed to constitute one and the same instrument. A set of the copies of this
Agreement signed by all the parties shall be lodged with the Borrowers and the
Administrative Agent.

                  14.11 Severability. Any provision of this Agreement which is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

                  14.12 Integration. This Agreement and the other Loan Documents
represent the agreement of the Parent Guarantors, the Borrowers, the
Administrative Agent, the Collateral Agent and the Lenders with respect to the
subject matter hereof, and there are no promises, undertakings, representations
or warranties by the Administrative Agent, the Collateral Agent or any Lender
relative to subject matter hereof not expressly set forth or referred to herein
or in the other Loan Documents.

                  14.13 Separate Obligations. Notwithstanding anything to the
contrary contained herein, each representation, warranty, covenant or other
undertaking made by HCNA or any of its Subsidiaries hereunder shall apply to or
be binding upon HCNA or such Subsidiary, as the case may be, and any of its
respective Subsidiaries, but shall not apply to or be binding upon any other
Person which is not a party hereto.

                  14.14 Application of Proceeds of Collateral. (a) Each of the
Administrative Agent, the Collateral Agent and each Lender hereby acknowledges
and agrees that it shall not be entitled to receive the proceeds of any
Collateral provided pursuant to the Security Documents under (and as defined in)
the US Credit Agreement or any Guarantee under (and as defined in) the US Credit
Agreement until it has used its diligent efforts to realize upon the Collateral
under (and as defined in) this Agreement; provided that the restrictions
contained in this subsection 14.14 shall terminate immediately upon notice from
the Majority Lenders hereunder to the Administrative Agent and the Collateral
Agent under (and as defined in) the US Credit Agreement that such diligent
efforts have been used. Following 



                                     -127-

<pg$pcn>
receipt by the Administrative Agent and the Collateral Agent (as defined in the
US Credit Agreement) of any such notice, any proceeds from the realization of
Collateral (as defined in the US Credit Agreement) shall be applied to the
Obligations hereunder and the Obligations under (and as defined in) the US
Credit Agreement in such a manner so that the holders of the Obligations
hereunder shall have received (to the extent that such proceeds are sufficient
to do so) payment on the same percentage of the aggregate amount of the
Obligations hereunder as the holders of the Obligations under (and as defined
in) the US Credit Agreement shall have received of the Obligations (as defined
in the US Credit Agreement) thereunder.

                  (b) Each of the Administrative Agent, the Collateral Agent and
each Lender hereby agrees that it shall not be entitled to receive the proceeds
of any Collateral provided pursuant to the Security Documents under (and as
defined in) the US Credit Agreement or any Guarantee under (and as defined in)
the US Credit Agreement to the extent that the Administrative Agent, the
Collateral Agent and the Lenders have received any payment of all or part of the
amounts owing to it hereunder and under the other Loan Documents, or have
received any collateral in respect thereof (whether voluntarily or
involuntarily, by set-off, pursuant to events or proceedings of the nature
referred to in Subsection 12(g) or otherwise), in a greater proportion than any
such payment to or collateral received by the Administrative Agent, the
Collateral Agent and the Lenders under (and as defined in) the US Credit
Agreement in respect of amounts owing to them thereunder and under the Loan
Documents (as defined therein).

                  Notwithstanding anything to the contrary contained herein or
in any other Loan Document, each Lender agrees that it will not exercise any
rights available to it under the Bank Act Security until such time as the Loans
hereunder and all other amounts owing under this Agreement and the Notes have
been declared to be due and payable in accordance with the provisions of Section
12, unless the existence of any statutory Liens in favor of third parties
ranking prior to the Lien of the Collateral Agent and the Lenders under the
Security Agreements (other than the Bank Act Security) would substantially
reduce the proceeds of realization under such Security Agreements (as determined
by the Collateral Agent based upon advice from Canadian legal counsel), in which
event the Lenders shall enforce the Bank Act Security prior to the enforcement
of the Security under the Security Documents generally.

                  (c) Notwithstanding anything to the contrary contained herein,
the foregoing provisions of this subsection 14.14 and subsection 14.14 of the US
Credit Agreement are intended to constitute an inter-creditor agreement between
the Lenders and the Lenders under (and as defined in) the US Credit Agreement.
The provisions of this subsection 14.14 are not intended to inure to the benefit
of any third party beneficiaries and nothing contained herein shall be deemed to
impair the perfection and/or 



                                     -128-

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priority of security interests (and the applicable equivalents thereof) and
other rights of the Lenders hereunder and Lenders under (and as defined in) the
US Credit Agreement in the Collateral hereunder or thereunder (and as defined in
therein).

                  14.15 GOVERNING LAW. THIS AGREEMENT AND THE NOTES, AND THE
RIGHTS AND OBLIGATIONS OF THE PARTIES UNDER THIS AGREEMENT AND THE NOTES, SHALL
BE GOVERNED BY, AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAWS OF
THE PROVINCE OF ONTARIO, CANADA, EXCEPT THAT THE PROVISIONS CONTAINED IN
SECTIONS 7, 9, 10 AND 11 OF THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED
AND INTERPRETED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, UNITED
STATES OF AMERICA.

                  14.16 Submission To Jurisdiction; Waivers. The Parent
Guarantors and the Borrowers hereby irrevocably and unconditionally:

                  (a) submit for themselves and their property in any legal
         action or proceeding relating to this Agreement and the other Loan
         Documents to which either of them is a party, or for recognition and
         enforcement of any judgement in respect thereof, to the non-exclusive
         general jurisdiction of the Courts of the State of New York, the courts
         of the United States of America for the Southern District of New York,
         and appellate courts from any thereof and to the Courts of the Province
         of Ontario and appellate courts from any thereof;

                  (b) consent that any such action or proceeding may be brought
         in such courts and waive any objection that they may now or hereafter
         have to the venue of any such action or proceeding in any such court or
         that such action or proceeding was brought in an inconvenient court and
         agrees not to plead or claim the same;

                  (c) agree that service of process in any such action or
         proceeding may be effected by mailing a copy thereof by registered or
         certified mail (or any substantially similar form of mail), postage
         prepaid, to such Parent Guarantor or such Borrower at its address set
         forth in subsection 14.2 or at such other address of which the
         Administrative Agent shall have been notified pursuant thereto;

                  (d) agree that nothing herein shall affect the right to effect
         service of process in any other manner permitted by law or shall limit
         the right to sue in any other jurisdiction; and

                  (e) waives, to the maximum extent not prohibited by law and in
         the absence of bad faith on the part of the Administrative Agent, the
         Collateral Agent or a Lender (with such waiver, in the case of any such
         bad faith, ceasing to be effective only as to the Administrative Agent,
         the 



                                     -129-

<pg$pcn>
         Collateral Agent or such Lender, as the case may be), any right it may
         have to claim or recover in any legal action or proceeding referred to
         in this subsection 14.16 any special, exemplary, punitive or
         consequential damages.

                  14.17 Acknowledgements. Each Parent Guarantor and each
Borrower hereby acknowledges that:

                  (a) it has been advised by counsel in the negotiation,
         execution and delivery of this Agreement and the Notes and the other
         Loan Documents;

                  (b) none of the Administrative Agent, the Collateral Agent nor
         any Lender has any fiduciary relationship with or duty to any Parent
         Guarantor or any Borrower arising out of or in connection with this
         Agreement or any of the other Loan Documents, and the relationship
         between Administrative Agent, the Collateral Agent and the Lenders, on
         one hand, and the Parent Guarantors and the Borrowers, on the other
         hand, in connection herewith or therewith is solely that of debtor and
         creditor; and

                  (c) no joint venture is created hereby or by the other Loan
         Documents or otherwise exists by virtue of the transactions
         contemplated hereby among the Lenders or among any Parent Guarantor or
         any Borrower and the Lenders.

                  14.18  WAIVERS OF JURY TRIAL.  THE PARENT GUARANTORS,
THE BORROWERS, THE ADMINISTRATIVE AGENT, THE COLLATERAL AGENT AND THE LENDERS
HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVE TRIAL BY JURY IN ANY LEGAL ACTION
OR PROCEEDING RELATING TO THIS AGREEMENT OR THE NOTES OR ANY OTHER LOAN DOCUMENT
AND FOR ANY COUNTERCLAIM THEREIN.

                  14.19 Confidentiality. (a) Each of the Administrative Agent
and each Lender agrees to keep confidential all non-public information provided
to it by any Borrower pursuant to this Agreement that is designated by such
Borrower as confidential and all copies thereof and extracts therefrom; provided
that nothing herein shall prevent the Administrative Agent or any Lender from
disclosing any such information (i) to the Administrative Agent, any other
Lender or, on a need-to-know basis, any affiliate of any Lender, (ii) to any
Transferee or prospective Transferee which agrees to comply with the provisions
of this Section 14.19, (iii) on a need-to-know basis, to the employees,
directors, agents, attorneys, accountants and other professional advisors of
such Lender or its affiliates, (iv) upon the request or demand of any
Governmental Authority having jurisdiction over the Administrative Agent or such
Lender, (v) in response to any order of any court or other Governmental
Authority or as may otherwise be required pursuant to any Requirement of Law,
(vi) if requested or required to do so in connection with any litigation or
similar proceeding, (vii) which has been publicly disclosed other than in breach
of this Section 14.19, or (viii) in connection with the



                                     -130-

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exercise of any remedy hereunder or under any other Loan Document.

                  (b) Except as required by Requirements of Law, each of HCNA
and the Borrowers hereby agrees that it will not, and will not permit anyone
acting on its behalf, to issue, authorize or release for external publication or
distribution any article, press release, advertisement or other publicity
material in any media disclosing the name of the Administrative Agent, the
Collateral Agent or any of the Lenders, without the prior written consent of the
affected Person.

                  (c) Except as required by Requirements of Law or in connection
with the enforcement or preservation of any rights under this Agreement, the
Notes and the other Loan Documents, each of the Administrative Agent, the
Collateral Agent and each of the Lenders hereby agrees that it will not, and
will not permit any one acting on its behalf, to issue, authorize or release for
external publication or distribution any article, press release, advertisement
or other publicity material in any media disclosing the name of HCNA or any of
its Subsidiaries, without the prior written consent of HCNA.




                                     -131-

<pg$pcn>
                  IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be duly executed and delivered by their proper and duly authorized
officers as of the day and year first above written.


                                 SIFTO CANADA INC., as a Borrower



                                 By:                                          
                                    ------------------------------------
                                    Title:                                    
                                                                              
                                                                              
                                 HARRIS CHEMICAL NORTH AMERICA,               
                                 INC., as a Guarantor                         
                                                                              
                                                                              
                                 By:                                          
                                    ------------------------------------
                                    Title:                                    

                                                                              
                                                                              
                                 NAMSCO, INC., as a Guarantor                 
                                                                              
                                                                              
                                                                              
                                 By:                                          
                                    ------------------------------------
                                    Title:                                    
                                                                              
                                                                              
                                 NORTH AMERICAN SALT COMPANY, as a            
                                 Guarantor                                    
                                                                              
                                                                              
                                                                              
                                 By:                                          
                                    ------------------------------------
                                    Title:                                    
                                                                              
                                                                              
                                                                              
                                 GENERAL ELECTRIC CAPITAL CANADA              
                                 INC., as Administrative Agent, as Collateral 
                                 Agent and as a Lender                        
                                                                              
                                                                              
                                 By:                                          
                                    ------------------------------------
                                    Name:  Bruce Hetherington                 
                                    Title:  Vice President, 
                                 Commercial Finance
                                                                              
                                 



                                     -132-

<pg$pcn>
                                         BANK OF AMERICA CANADA, as a Lender 
                                                                             
                                                                             
                                         By:                                 
                                            ----------------------------------
                                            Name:                            
                                            Title:                           
                                         




                                     -133-

<pg$pcn>
                                                       SCHEDULE III to
                                                      Credit Agreement




                           SUBSIDIARIES AND GUARANTORS
                        [TO BE PROVIDED BY THE BORROWER]



                                      -1-

<pg$pcn>
                                                                  SCHEDULE V to
                                                               Credit Agreement




                              EXISTING INDEBTEDNESS


                        [TO BE PROVIDED BY THE BORROWER]




                                      -2-

<pg$pcn>
                                                          SCHEDULE VI to
                                                       Credit Agreement




                                 EXISTING LIENS


                        [TO BE PROVIDED BY THE BORROWER]



                                      -3-

<pg$pcn>
                                                     SCHEDULE VII to
                                                   Credit Agreement





                         EXISTING GUARANTEE OBLIGATIONS


                        [TO BE PROVIDED BY THE BORROWER]




                                      -4-

<pg$pcn>
                                                          SCHEDULE VIII to
                                                          Credit Agreement

                               SECURITY AGREEMENTS


         (a) a first ranking general assignment of Accounts in favor of the
Collateral Agent on behalf of the Lenders, to be registered in the Provinces of
New Brunswick, Nova Scotia and Newfoundland wherever it is necessary or useful
to do so in order to perfect or enforce the same;

         (b) a first ranking general assignment of Accounts in favor of the
Collateral Agent on behalf of the Lenders to be registered in the Province of
Quebec wherever it is necessary of useful to do so in order to perfect or
enforce the same;

         (c) a general security agreement charging all the Inventory and
Accounts of the Borrowers in favor of the Collateral Agent on behalf of the
Lenders together with appropriate financing statements to be registered under
the Personal Property Security Acts of each of the Provinces of New Brunswick,
Ontario, Manitoba, Saskatchewan, Alberta and British Columbia;

         (d) a first ranking floating charge debenture charging all of the
Inventory to be registered in the Provinces of Nova Scotia, New Brunswick and
Newfoundland wherever it is necessary or useful to do so in order to perfect or
enforce the same and a delivery agreement under which such debenture shall be
delivered;

         (e) transfer of property in stock in favor of the Collateral Agent on
behalf of the Lenders transferring to the Collateral Agent the Inventory to be
registered in the Province of Quebec wherever it is necessary or useful to do so
in order to perfect or enforce the same;

         (f) "security" as defined under Sections 426 and 427 of the Bank Act
(Canada) in favor of each of the Lenders which is a Canadian bank (pursuant to
the Bank Act (Canada)) to be registered in the office of the Bank of Canada in
Toronto, Ontario and in the Provinces of Saskatchewan, Ontario and Nova Scotia
wherever it is necessary or useful to do so in order to perfect or enforce the
same; and

         (g) deed of hypothec creating a hypothec on all the Inventory and
Accounts of the Borrowers in favor of the Collateral Agent, the Administrative
Agent and the Lenders to be registered in the Register of Real and Moveable
rights in Quebec.


                                      -1-

<pg$pcn>
                                                                   SCHEDULE I
                                                             to Credit Agreement

                              ADDRESSES FOR NOTICES

GENERAL ELECTRIC CAPITAL CANADA, INC.

For Funding Requests:                        Other Notices:                     
                                                                                
2300 Meadowvale Blvd.                        2300 Meadowvale Blvd.              
Mississauga, Ontario L5N 5P9                 Mississauga, Ontario L5N 5P9       
Attention:  VP and Counsel                   Attention:  VP and Counsel         
Telecopier:  (905) 858-5456                  Telecopier:  (905) 858-5456        
                                                                                
WITH A COPY TO:                                                                 
                                                                                
GENERAL ELECTRIC CAPITAL CORPORATION                                            
                                                                                
For Funding Requests:                        Other Notices                      
                                                                                
201 High Ridge Road                          201 High Ridge Road                
Stamford, CT 06926                           Stamford, CT 06926                 
Attention:  Harris Portfolio Analyst         Attention:  Harris Account Manager 
Telephone:  (203) 316-7500                   Telephone:  (203) 316-7500         
Telecopier:  (203) 316-7817 or 7816          Telecopier:  (203) 316-7893        
                                                                                
                                                                                
BANK OF AMERICA CANADA, INC.                                                    
                                                                                
For Funding Requests:                                                           
                                                                                
Canadian $ Fundings                                                            
                                                                                
200 Front Street West, Suite 2700            200 Front Street West, Suite 2700  
Toronto Branch                               Toronto Branch                     
Toronto, Ontario M5V 3L2                     Toronto, Ontario M5V 3L2           
Attention:  Medina Sales de Andrade          Attention:  Ribert Kizell          
Telephone:  (416) 349-5464                   Telephone:  (416) 349-5349         
Telecopier:  (416) 349-4282                  Telecopier:  (416) 349-4295        
                                             
US $ Fundings

231 S. LaSalle, 16th Floor
Chicago, IL 60697
Attn:  Melody Vaughan
Telephone:  (312) 974-2443
Telecopier:  (312) 974-8780




                                       -3-




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