Document:

<PAGE>

                                                                    EXHIBIT 10.2

                               LOCK UP AGREEMENT
                               -----------------

     This Lock Up Agreement (hereinafter called the "Agreement") is entered into
by and between Retractable Technologies, Inc., a Texas corporation (hereinafter
referred to as "RTI" or the "Company"), and Lillian E. Salerno, effective as of
November 4, 2000. RTI and Ms. Salerno are hereinafter collectively referred to
as the "Parties."

                                    RECITALS
                                    --------

     WHEREAS, the Board of Directors of RTI has determined that it is in the
best interest of the Company to restrict the transfer of large portions of the
Common Stock of RTI; and

     WHEREAS, Ms. Salerno agrees that restrictions on the transfer of large
portions of the Common Stock of RTI are in the best interest of the Company and
the market value of her Common Stock; and

     WHEREAS, Ms. Salerno owns 2,800,000 shares of the Common Stock of RTI, no
par value, as of the date of this Agreement; and

     WHEREAS, Ms. Salerno has agreed to limit her ability to transfer ownership
of her Common Stock of RTI for two (2) years in exchange for $10.00 and other
good and valuable consideration;

                                   AGREEMENT
                                   ---------

     NOW, THEREFORE, in consideration of the premises and other good and
valuable consideration, the receipt, adequacy, and sufficiency of which are
hereby acknowledged, the Parties agree as follows:

     1.  The foregoing recitals are true, correct, and complete and constitute
the basis for this Agreement and are incorporated into this Agreement for all
purposes.

     2.  Ms. Salerno agrees that for a period of one year from the effective
date of this Agreement, she will not offer, pledge, sell, contract to sell,
grant any option for the sale of, or otherwise dispose of, directly or
indirectly, an amount greater than a cumulative 3% of the shares of Common Stock
of the Company now owned by her.

     3.  At the end of the initial one year period from the effective date of
this Agreement, Ms. Salerno further agrees that for a period of one subsequent
year she will not offer, pledge, sell, contract to sell, grant any option for
the sale of, or

LOCK UP AGREEMENT - Page 1 of 3 Pages
-----------------

                                       1
<PAGE>

otherwise dispose of, directly or indirectly, an amount greater than a
cumulative 7% of the shares of Common Stock of the Company owned by her as of
the date of this Agreement. This Agreement shall not apply to shares purchased
by Ms. Salerno subsequent to the effective date of this Agreement.

     4.  RTI agrees to pay Ms. Salerno $10.00 upon receipt of this fully
executed Agreement.

     5.  Ms. Salerno further agrees that she will not, without the prior consent
of the Board of Directors of RTI during the 2-year period beginning on the
effective date of this Agreement, make any demand or exercise any right with
respect to the registration of her shares owned as of the date of this
Agreement.

     6.  Ms. Salerno further agrees that RTI (i) may instruct its transfer agent
not to transfer such securities; (ii) may provide a copy of this Agreement to
RTI's transfer agent for the purpose of instructing the Company's transfer agent
to place a legend on the certificate(s) evidencing the securities subject hereto
and disclosing that any transfer, sale, contract for sale, devise, gift,
assignment, pledge, or hypothecation of such securities is subject to the terms
of this Agreement; and (iii) may issue stop-transfer instructions to its
transfer agent for the period contemplated by this Agreement for such
securities.

     7.  Ms. Salerno agrees that any breach of this Agreement will cause RTI
irreparable damage for which there is no adequate remedy at law. If there is a
breach or threatened breach of this Agreement by Ms. Salerno, Ms. Salerno hereby
agrees that RTI shall be entitled to the issuance of an immediate injunction
without notice to restrain the breach or threatened breach. Ms. Salerno also
agrees that RTI shall be entitled to pursue any other remedies for such a breach
or threatened breach, including a claim for money damages.

     8.  This Agreement is irrevocable and is binding on the undersigned and the
personal representatives and assigns of the undersigned. Notwithstanding
anything contained herein, this Agreement shall immediately terminate upon the
death of the undersigned and shall not be binding upon the heirs or successors
of the undersigned.  Nothing in this Agreement shall constitute an offer to sell
or a solicitation of an offer to buy, and this Agreement shall create no
obligation to purchase Common Stock or securities of the Company.

     9.  Any attempted sale, transfer, or other disposition in violation of this
Agreement shall be null and void.

     10.  THIS AGREEMENT SHALL BE GOVERNED BY, CONSTRUED, AND ENFORCED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS (EXCLUDING ANY CONFLICTS-OF-LAW
RULE OR PRINCIPLE OF TEXAS LAW THAT MIGHT REFER THE GOVERNANCE, CONSTRUCTION, OR

LOCK UP AGREEMENT - Page 2 of 3 Pages
-----------------

                                       2
<PAGE>

INTERPRETATION OF THIS AGREEMENT TO THE LAWS OF ANOTHER STATE).

     11.  This Agreement supersedes any and all other prior understandings and
agreements, either oral or in writing, between the Parties with respect to the
subject matters hereof and constitutes the sole and only agreement between the
Parties with respect to these matters.  Each party to this Agreement
acknowledges that no representations, inducements, promises, or other
agreements, orally or otherwise, have been made by any party hereto or by anyone
acting on behalf of any party hereto, which are not embodied herein, and that
any agreement, statement, or promise that is not contained in this Agreement
shall not be valid or binding or of any force or effect.

     12.  No change or modification of this Agreement shall be valid or binding
without the prior approval of RTI's Board of Directors.

     13.  In the event that any one or more of the terms, provisions, or
agreements that are contained in this Agreement shall be held by a Court of
competent jurisdiction to be invalid, illegal, or unenforceable in any respect
for any reason, the invalid, illegal, or unenforceable term, provision, or
agreement shall not affect any other term, provision, or agreement of this
Agreement and this Agreement shall be construed as if the invalid, illegal, or
unenforceable term, provision, or agreement had never been contained herein.

     14.  The Parties acknowledge that they have carefully read this Agreement
and know the contents hereof.

     IN WITNESS WHEREOF, the Parties have executed this Agreement effective as
of the date above written.

                         RETRACTABLE TECHNOLOGIES, INC.

                         BY:  /s/  THOMAS J. SHAW
                            -------------------------------------
                            THOMAS J. SHAW
                            PRESIDENT

                          /s  LILLIAN E. SALERNO
                         ----------------------------------------
                         LILLIAN E. SALERNO
                         INDIVIDUALLY

LOCK UP AGREEMENT - Page 3 of 3 Pages
-----------------

                                       3<PAGE>

                                                                    Exhibit 10.1

                             SECOND AMENDMENT TO THE
                  SECOND AMENDED AND RESTATED CREDIT AGREEMENT

         THIS SECOND AMENDMENT TO THE SECOND AMENDED AND RESTATED CREDIT
AGREEMENT (the "Amendment") dated as of October 20, 2000, is executed by and
among IMCO Recycling Inc. ("Borrower"), the Subsidiary Guarantors to the Credit
Agreement (hereinafter defined), the Lenders to the Credit Agreement and The
Chase Manhattan Bank (successor by merger to Chase Bank of Texas, National
Association) in its capacity as Administrative Agent under the Credit Agreement
(in such capacity, "Administrative Agent"),

                                    RECITALS

A.       Borrower, Subsidiary Guarantors, Lenders and Administrative Agent are
         parties to that certain Second Amended and Restated Credit Agreement,
         dated as of October 25, 1999, as amended by that certain First
         Amendment to the Second Amended and Restated Credit Agreement dated as
         of January 5, 2000 (the "Credit Agreement"), pursuant to which Lenders
         have made revolving credit commitments to Borrower in the amount of up
         to $250,000,000.

B.       Borrower, Subsidiary Guarantors, Lenders and Administrative Agent
         desire to amend the Credit Agreement in accordance with the terms
         hereinafter set forth pursuant to the amendment procedures specified in
         Section 12.04 of the Credit Agreement.

         NOW, THEREFORE, in consideration of the mutual covenants and agreements
contained herein, and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto hereby agree as
follows:

                                    ARTICLE I

                                   Definitions
                                   -----------

         1.1      Defined  Terms.  All  capitalized  terms used herein and not
otherwise defined herein shall have the respective  meanings given to such terms
in the Credit Agreement.

                                   ARTICLE II

                                   Amendments
                                   ----------

         2.1      Amendment  to  Defined  Terms.  The definitions of the
following  defined  terms set forth in Section 1.01 of the Credit  Agreement are
hereby amended to read in their respective entireties as follows:

                  "Applicable Margin" shall mean (i) during the period
                   -----------------
         commencing on October 20, 2000 and continuing until the Delivery Date,
         the greater of 2.25% per annum or the percentage per annum based on the
                                                          ---------
         Leverage Ratio determined from the Interest Rate Certificate and
         Financial Statements delivered under Sections 9.01(a) and (e) for the
         Measurement Period ended September 30, 2000, as specified in the table
         set forth below; and (ii) thereafter a percentage per annum based on
                                                           ---------
         the Leverage Ratio determined from
<PAGE>

         the most recently delivered Interest Rate Certificate and financial
         statements under Sections 9.01(a), (b) and (e), which percentage per
                                                                          ---
         annum shall be equal to the percentage per annum set forth opposite
         -----                                  ---------
         such Leverage Ratio below:

<TABLE>
<CAPTION>
         ======================================================================================
                                               Alternate
                 Leverage Ratio             Base Rate Loans              LIBOR Loans
         --------------------------------------------------------------------------------------
         <S>                                <C>                          <C>
         **4.00:1.00                             1.50%                       2.75%
         --------------------------------------------------------------------------------------
         **3.75:1.00 and *4.00:1.00              1.25%                       2.25%
         --------------------------------------------------------------------------------------
         **3.50:1.00 and *3.75:1.00              1.00%                       2.00%
         --------------------------------------------------------------------------------------
         **3.00:1.00 and *3.50:1.00              0.50%                       1.75%
         --------------------------------------------------------------------------------------
         **2.25:1.00 and *3.00:1.00              0.00%                       1.50%
         --------------------------------------------------------------------------------------
         *2.25:1.00                              0.00%                       1.25%
         ======================================================================================
</TABLE>

         Any change in the Leverage Ratio shall be effective to adjust the
         Applicable Margin as of the date of receipt by the Administrative Agent
         of the Interest Rate Certificate delivered for any period ending on or
         after December 31, 2000, and most recently delivered pursuant to
         Section 9.01(e). If Borrower fails to deliver the Interest Rate
         Certificates and financial statements after December 31, 2000 within
         the times specified in Sections 9.01(a), (b) and (e), such ratio shall
         be deemed to be ** 4.00 to 1.0 until Borrower delivers such Interest
         Rate Certificates and financial statements.

                  "Applicable Revolving Credit Commitment Fee Percentage" shall
                   -----------------------------------------------------
         mean (i) during the period commencing on the date hereof and continuing
         until the Delivery Date, 0.500% per annum, and (ii) thereafter, a
         percentage per annum based on the Leverage Ratio determined from the
                    ---------
         most recently delivered Interest Rate Certificate and financial
         statements under Sections 9.01(a), (b) and (e), which percentage per
                                                                          ---
         annum shall be equal to the percentage per annum set forth opposite
         -----                                  ---------
         such Leverage Ratio below:

<TABLE>
<CAPTION>
         =================================================================================
                                                                   Applicable
                                                                Revolving Credit
                    Leverage Ratio                         Commitment Fee Percentage
         ---------------------------------------------------------------------------------
         <S>                                           <C>
         **3.50:1.00                                   0.500%
         ---------------------------------------------------------------------------------
         **2.25:1.00 and *3.50:1.00                    0.375%
         ---------------------------------------------------------------------------------
         *2.25:1.00                                    0.250%
         =================================================================================
</TABLE>

*  is less than.
** is greater than or equal to.

                                       2
<PAGE>

                  Any change in the Leverage Ratio shall be effective to adjust
         the Applicable Revolving Credit Commitment Fee Percentage as of the
         date of receipt by the Administrative Agent of the Interest Rate
         Certificate delivered for any period ending on or after December 31,
         2000 and most recently delivered pursuant to Section 9.01(e). If
         Borrower fails to deliver the Interest Rate Certificates and financial
         statements after December 31, 2000 within the time specified in
         Sections 9.01(a), (b) and (e), such ratio shall be deemed to be **3.50
         to 1.0 until Borrower delivers such Interest Rate Certificates and
         financial statements.

                  "Collateral Account" is defined in Section 4.01 of the
                   ------------------
Security Agreement.

                  "Consolidated Interest Expense" shall mean, for any period,
                   -----------------------------
         for Borrower and its Consolidated Subsidiaries (determined on a
         consolidated basis without duplication in accordance with GAAP), all
         cash interest expense in respect of Indebtedness during such period
         (whether or not actually paid during such period), including the
         interest component under the Permitted Receivables Financing.

                  "Consolidated Net Worth" shall mean at a particular date, the
                   ----------------------
         sum (without duplication) of all amounts which would be included under
         shareholders' equity on a consolidated balance sheet of Borrower and
         its Consolidated Subsidiaries determined on a consolidated basis in
         accordance with GAAP as at such date.

                  "Delivery Date" shall mean the date an Interest Rate
                   -------------
         Certificate is delivered to the Lenders for the fiscal quarter ended
         December 31, 2000, as required by Section 9.01(e).

                  "Indebtedness" shall mean, for any Person, without
                   ------------
         duplication, (a) all indebtedness for borrowed money of such Person;
         (b) all obligations issued, undertaken or assumed by such Person as the
         deferred purchase price of Property or services (other than trade
         payables and accrued expenses not overdue by more than 60 days incurred
         in the ordinary course of business on ordinary terms); (c) all
         non-contingent reimbursement or payment obligations of such Person with
         respect to Surety Instruments (such as, for example, unpaid
         reimbursement obligations in respect of a drawing under a letter of
         credit); (d) all obligations of such Person evidenced by notes, bonds,
         debentures or similar instruments, including obligations so evidenced
         incurred in connection with the acquisition of Property or businesses;
         (e) all indebtedness of such Person created or arising under any
         conditional sale or other title retention agreement, or incurred as
         financing, in either case with respect to Property acquired by such
         Person (even though the rights and remedies of the seller or lender
         under such agreement in the event of default are limited to
         repossession or sale of such Property); (f) all Capital Lease
         Obligations of such Person; (g) all net obligations of such Person with
         respect to Swap Contracts (such obligations to be equal at any time to
         the aggregate net amount that would have been payable by such Person at
         the most recent fiscal quarter end in connection with the termination
         of such Swap Contracts at such fiscal quarter end); (h) all
         indebtedness of other Persons referred to in clauses (a) through (g)
         above secured by (or for which the holder of such indebtedness has an
         existing right, contingent or otherwise, to be secured by) any Lien
         upon or in Property (including accounts and contracts rights) owned by
         such Person, even though such Person has not assumed or become liable
         for

** is greater than or equal to

                                       3
<PAGE>

         the payment of such indebtedness; (i) the outstanding Attributed
         Principal Amount under the Permitted Receivables Financing; and (j) all
         Contingent Obligations of such Person in respect of indebtedness or
         obligations of others of the kinds referred to in clauses (a) through
         (i) above. Indebtedness shall not include accounts extended by
         suppliers in the ordinary course on normal trade terms in connection
         with the purchase of goods and services. The Indebtedness of any Person
         shall include any Indebtedness of any partnership in which such Person
         is the general partner.

                  "Interest Coverage Ratio" shall mean, for any Measurement
                   -----------------------
         Period, the ratio of (a) the remainder of Consolidated EBITDA for such
         period less Capital Expenditures for such period, except the Saginaw
         Capital Expenditures, to (b) Consolidated Interest Expense for such
         period.

                  "Notes" shall mean the promissory notes provided for by
                   -----
         Section 2.08(a) and all promissory notes delivered in substitution or
         exchange therefor, in each case as the same shall be modified and
         supplemented and in effect from time to time.

                  "Revolving Credit Commitment" shall mean, for each Lender, on
                   ---------------------------
         any date of determination, the obligation of such Lender to make
         Revolving Credit Loans in an aggregate principal amount at any one time
         outstanding up to but not exceeding the amount set forth opposite the
         name of such Lender on Annex A under the caption "Revolving Credit
                                -------
         Commitment" (as the same may be reduced from time to time pursuant to
         Section 2.04(b) or 2.10, or changed pursuant to Section 12.06(b)).

                  "Total Debt" shall mean at any date, the aggregate amount of
                   ----------
         Indebtedness of Borrower and the Subsidiaries determined on a
         consolidated basis in accordance with GAAP.

         2.2      Addition of New Defined Terms. Section 1.01 of the Credit
Agreement is hereby amended by adding definitions of the following defined
terms, such definitions to read in their respective entireties as follows:

                  "Attributed Principal Amount" shall mean, on any day, with
                   ---------------------------
         respect to the Permitted Receivables Financing, the aggregate amount
         (the "Invested Amount") paid to, or borrowed by, the SPS as of such
               ---------------
         date under the Permitted Receivables Financing, minus the aggregate
                                                         -----
         amount received by the Receivables Financier and applied to the
         reduction of the Invested Amount under the Permitted Receivables
         Financing.

                  "Invested Amount" has the meaning specified in the definition
                   ---------------
of "Attributed Principal Amount."

                  "Permitted Receivables Financing" shall mean the receivables
                   -------------------------------
         financing described in the Indicative Summary of Terms and Conditions
         set forth on Annex C, as such terms may hereafter be amended from time
                      -------
         to time in accordance with clause (d) hereof, pursuant to which the
         Borrower and certain Subsidiaries from time to time sell, convey or
         otherwise contribute certain accounts receivable as more particularly
         described on Annex C (collectively, together with certain property
                      -------
         relating thereto and the right to collections thereon, being the
         "Transferred Assets") to the SPS, which SPS then sells to the
          ------------------

                                       4
<PAGE>

         Receivables Financier an ownership interest in the Transferred Assets,
         provided that (a) the aggregate Attributed Principal Amount for such
         --------
         receivables financing shall not at any time exceed $100,000,000, (b)
         such receivables financing shall not involve any recourse to the
         Borrower or any Subsidiary other than (i) obligations to repurchase
         non-eligible receivables and (ii) indemnification and reimbursement
         obligations for claims, damages, expenses, costs, dilutions,
         liabilities and losses other than credit losses related to the
         receivables sold in such financing, and for breaches of representations
         and warranties under the related documents, (c) the Administrative
         Agent shall be reasonably satisfied with the structure of and
         documentation for such transaction and that the terms of such
         transaction, including the discount at which receivables are sold, the
         term of the commitment of the Receivables Financier thereunder and any
         termination events or liquidations events, shall be (in the good faith
         understanding of the Administrative Agent) consistent with those
         prevailing in the market for similar transactions involving a
         receivables originator/servicer of similar credit quality and a
         receivables pool of similar characteristics, (d) the documentation for
         such transaction shall not be amended or modified without the prior
         written approval of the Majority Lenders if such amendment or
         modification (i) increases the facility amount for such financing, (ii)
         increases or provides for any additional recourse or financial
         obligations of the Borrower or any Subsidiary, other than the SPS,
         beyond those described in clause (b) above, (iii) provides for any
         other obligations of the Borrower or any Subsidiary, other than the
         SPS, that would have a Material Adverse Effect, or (iv) requires that
         the Borrower or any Subsidiary provide cash or other collateral, a
         letter of credit or other credit enhancement for such financing, (e)
         the documentation for such transaction shall not be amended or modified
         without the prior written consent of the Administrative Agent, if such
         amendment or modification (i) reduces the facility amount for such
         financing, (ii) reduces the availability under such financing,
         including by way of increases to the reserves, or (iii) increases the
         financial obligations of the SPS thereunder in any material respect,
         except for changes in pricing consistent with prevailing market terms
         for similar transactions involving a receivables originator/servicer of
         similar credit quality and a receivables pool of similar
         characteristics, and (f) simultaneously with the closing of such
         receivables financing, the Revolving Credit Commitments shall be
         automatically reduced to $175,000,000 in accordance with Section
         2.10(a)(vi) and the outstanding Revolving Credit Loans in excess of
         such reduced Revolving Credit Commitments shall be paid in accordance
         with Section 2.10(c).

                  "Receivables Financier" shall mean Market Street Funding
                   ---------------------
         Corporation, an independently-owned, bankruptcy-remote Delaware
         corporation, its successors and assigns, or such other receivables
         financier as shall be acceptable to the Administrative Agent.

                  "Saginaw Capital Expenditures" shall mean Capital Expenditures
                   ----------------------------
         made during the quarters ending March 31, 2000, June 30, 2000,
         September 30, 2000, December 31, 2000 and March 31, 2001, for the
         construction of the Saginaw County, Michigan facility, in an aggregate
         amount not greater than $14,250,000.

                                       5
<PAGE>

                  "SPS" shall mean IMCO Funding Corporation, a Delaware
                   ---
         corporation and a bankruptcy-remote special purpose Subsidiary of the
         Borrower created for the purpose of entering into the Permitted
         Receivables Financing.

                  "Transferred Assets" has the meaning specified in the
                   ------------------
         definition of "Permitted Receivables Financing."

         2.3      Deletion of Certain Defined Terms. Section 1.01 of the Credit
Agreement is hereby amended by deleting the definitions of the following defined
terms in their respective entireties: "Additional Lender," "Collateral Release
Date," "Commitment Increase," "Increase Amount," "Debt Conversion Event,"
"Increase Request," "Increasing Lender," "Response Date," "Subordinated Debt,"
and "Trust Preferred Securities".

         2.4      Fees. Section 2.05 of the Credit Agreement is hereby amended
to add the following clause (c) to the end thereof, which clause (c) shall read
in its entirety as follows:

                  (c) The Borrower shall pay to the Administrative Agent for the
         account of each Lender that executes and delivers that certain Second
         Amendment to the Amended and Restated Credit Agreement dated as of
         October 20, 2000 (the "Second Amendment"), a fee in an amount equal to
         the Revolving Credit Commitment of each such Lender multiplied by 20
         basis points, such fee to be payable on October 20, 2000. In the event
         the Permitted Receivables Financing does not close on or before
         February 19, 2001, the Borrower shall pay to the Administrative Agent
         for the account of each Lender that executes and delivers the Second
         Amendment an additional fee in an amount equal to each such Lender's
         pro rata share of the $75,000,000 reduction of the Revolving Credit
         Commitments that would have occurred on such closing pursuant to
         Section 2.10(a)(vi), multiplied by 15 basis points, such additional fee
         to be payable on February 19, 2001.

         2.5      Amendment to Mandatory Reductions. Section 2.10 of the Credit
Agreement is hereby amended as follows:

         (a) The phrase "until the Collateral Release Date" is deleted each time
it appears in such Section.

         (b) Clause (a) of such Section 2.10 is hereby amended by adding the
following clause (vi) to the end thereof, which clause shall read in its
entirety as follows:

                  (vi) Permitted Receivables Financing. Simultaneously with the
                       -------------------------------
         closing of the Permitted Receivables Financing, in an aggregate amount
         equal to $75,000,000, so that thereafter the aggregate principal amount
         of the Revolving Credit Commitments shall be $175,000,000 (or such
         applicable lesser amount in the event the Revolving Credit Commitments
         are otherwise reduced on or before such closing).

         (c) The second paragraph of clause (c) of such Section 2.10 is hereby
amended to read in its entirety as follows:

                                       6
<PAGE>

                  Notwithstanding the foregoing, if the amount of any prepayment
         of Revolving Credit Loans required under this Section 2.10, except
         prepayment under clause (a)(vi), shall be in excess of the amount of
         the Alternate Base Rate Loans at the time outstanding, only the portion
         of the amount of such prepayment as is equal to the amount of such
         outstanding Alternate Base Rate Loans shall be immediately prepaid and,
         at the election of Borrower, the balance of such required prepayment
         shall be either (i) deposited in the Collateral Account and applied to
         the prepayment of LIBOR Loans on the last day of the then next-expiring
         Interest Period for LIBOR Loans or (ii) prepaid immediately, together
         with any amounts owing to the Lenders under Section 5.05.
         Notwithstanding any such deposit in the Collateral Account, interest
         shall continue to accrue on such Revolving Credit Loans until
         prepayment. If the amount of any prepayment of Revolving Credit Loans
         required under clause (a)(vi) of this Section 2.10 shall be in excess
         of the amount of the Alternate Base Rate Loans at the time outstanding,
         the portion of such prepayment as is equal to the amount of such
         Alternate Business Rate Loans shall be first prepaid, with the balance
         of such prepayment being made together with any amounts owing to the
         Lenders under Section 5.05.

         (d) Clause (d) of such Section 2.10 is hereby amended by deleting the
last sentence thereof.

         2.6      Amendment to Section 8.16. Section 8.16 of the Credit
Agreement is hereby amended to read in its entirety as follows:

                  8.16 Security Interest. The Security Documents, once executed,
                       -----------------
         delivered, filed and/or recorded will create, in favor of the
         Administrative Agent for the benefit of the Lenders, as security for
         the obligations purported to be secured thereby, a valid and
         enforceable perfected first priority security interest in and Lien upon
         all of the Collateral, superior to and prior to the rights of all third
         persons and subject to no Liens except the Prior Liens applicable to
         such Collateral.

         2.7      Amendment to Section 9.01. Clause (j) of Section 9.01 of the
Credit Agreement is hereby amended to read in its entirety as follows:

                  (j) written notice of (i) the incurrence of any material Lien
         (other than Liens permitted pursuant to Section 9.07) on, or claim
         asserted against any of the collateral security in the Security
         Documents or (ii) the occurrence of any other event which could
         reasonably be expected to have a material adverse effect on the
         aggregate value of the collateral under any Security Document;

         2.8      Amendment to Section 9.05. Section 9.05 of the Credit
Agreement is hereby amended to read in its entirety as follows:

                  9.05 Issuance or Disposals of Capital Stock of Subsidiaries.
                       ------------------------------------------------------
         No Subsidiary shall issue, sell, assign, transfer or otherwise dispose
         of any shares (or other ownership interests) of any class of its
         capital stock or equity ownership interests or of any Equity Rights to
         purchase its capital stock or equity ownership interests or of other
         securities exchangeable for or convertible into its capital stock or
         equity ownership interests, except

                                       7
<PAGE>

         (a) to Borrower or a Wholly Owned Subsidiary, and (b) directors'
         qualifying shares as required by law. Neither Borrower nor any
         Subsidiary shall effect the Disposition of any capital stock of any
         Subsidiary unless all capital stock owned by Borrower and the
         Subsidiaries is sold pursuant thereto and such sale is otherwise
         permitted herein.

         2.9      Amendment to Section 9.06. Section 9.06 of the Credit
Agreement is hereby amended to read in its entirety as follows:

                  9.06 Fundamental Changes; Acquisitions; Dispositions. No
                       -----------------------------------------------
         Obligor or Subsidiary shall, directly or indirectly, (1) enter into any
         transaction of merger or consolidation or amalgamation, or liquidate,
         wind up or dissolve itself (or suffer any liquidation or dissolution),
         (2) acquire any business or Property from, or capital stock of, or be a
         party to any acquisition of, any Person, or effect any Acquisition, or
         (3) effect any Disposition or convey, sell, lease, assign, transfer or
         otherwise dispose of, in one transaction or a series of transactions,
         all or a substantial part of its business or Property, whether now
         owned or hereafter acquired, including receivables and leasehold
         interests. Notwithstanding the foregoing provisions of this Section
         9.06, each of the following shall be permitted:

                  (a)  purchases of inventory and other Property to be sold or
         used in the ordinary course of business;

                  (b)  Acquisitions permitted by Section 9.09(k), (u) or (v) and
         other Investments permitted by Section 9.09;

                  (c)  any Subsidiary may be merged or consolidated or dissolved
         or liquidated with or into: (i) Borrower if Borrower shall be the
         continuing or surviving corporation or (ii) any Wholly Owned Subsidiary
         which is an Obligor; provided, however, that a Wholly Owned Subsidiary
                              --------  -------
         which is an Obligor shall be the continuing or surviving corporation;

                  (d)  any Subsidiary may sell, lease, transfer or otherwise
         dispose of any or all of its Property (upon voluntary liquidation or
         otherwise) to Borrower or to any Wholly Owned Subsidiary which is an
         Obligor;

                  (e)  any Wholly Owned Subsidiary that is a Foreign Subsidiary
         may sell, lease, transfer or otherwise dispose of any or all of its
         assets (upon voluntary liquidation or otherwise) to another Wholly
         Owned Subsidiary that is a Foreign Subsidiary;

                  (f)  Dispositions of used, worn out, obsolete or surplus
         equipment or other Property by Borrower or any Subsidiary, all in the
         ordinary course of business; provided, however, that the proceeds
                                      --------  -------
         thereof are reinvested in the business of Borrower or any Subsidiary
         within one year of such Disposition;

                  (g)  any Foreign Subsidiary may be merged or consolidated with
         or into any one or more Wholly Owned Subsidiaries that are Foreign
         Subsidiaries (provided that a Wholly Owned Subsidiary that is a Foreign
         Subsidiary shall be the continuing or surviving corporation);

                                       8
<PAGE>

                  (h)  Borrower or any Subsidiary may sell or discount, in each
         case without recourse, accounts receivable arising in the ordinary
         course of business, but only in connection with the compromise or
         collection thereof;

                  (i)  the sale by any Foreign Subsidiary of its accounts
         receivable; provided, however, that the terms of each such sale are
                     --------  -------
         satisfactory in form and substance to the Administrative Agent;

                  (j)  Dispositions for fair market value not to exceed
         $15,000,000 in the aggregate after the date of this Agreement;
         provided, however, that the Net Available Proceeds therefrom are
         --------  -------
         reinvested as specified in Section 2.10(a)(iii) or applied to the
         prepayment of the Revolving Credit Loans as specified in Section
         2.10(a);

                  (k)  the sale of all or substantially all of the capital stock
         and/or equity interests in or assets of IMCO Recycling of California,
         Inc., a Subsidiary, owned by Borrower or any Subsidiary; provided,
                                                                  --------
         however, that the Net Available Proceeds therefrom are reinvested as
         -------
         specified in Section 2.10(a)(iii) or applied to the prepayment of the
         Revolving Credit Loans as specified in Section 2.10(a);

                  (l)  Dispositions of assets pursuant to the Commonwealth
         Option or the Commonwealth Right of First Refusal; provided, however,
                                                            --------  -------
         that the Net Available Proceeds therefrom are applied to the prepayment
         of the Revolving Credit Loans as specified in Section 2.10(a);

                  (m)  the transfer by Borrower to IMCO International, Inc., and
         subsequent transfer by IMCO International, Inc. to IMCO Recycling
         Holding B.V., of Borrower's share interests in IMCO Recycling (UK) Ltd.
         and its joint venture interests in VAW-IMCO Guss und Recycling GmbH;

                  (n)  the transfer by U.S. Zinc Corporation to IMCO
         International, Inc., and subsequent transfer by IMCO International,
         Inc. to IMCO Recycling Holding B.V., of U.S. Zinc's share interests in
         MetalChem Handel GmbH and in MetalChem Canada Incorporated; and

                  (o)  provided that the initial proceeds of the Permitted
         Receivables Financing shall be applied to pay in full all amounts
         payable under Section 2.10(c) in connection with the simultaneous
         reduction of the Revolving Credit Commitments pursuant to Section 2.10
         (a)(vi), (i) the Borrower and the Subsidiaries shall be permitted to
         sell the Transferred Assets to the SPS in connection with the Permitted
         Receivables Financing, and (ii) the SPS shall be permitted to sell an
         ownership interest in the Transferred Assets to the Receivables
         Financier in connection with the Permitted Receivables Financing.

         To the extent the Majority Lenders waive the provisions of this Section
         9.06 with respect to the sale or other disposition of any Collateral,
         or any Collateral is sold or otherwise disposed of as permitted by this
         Section 9.06 (and such Collateral is released (or permitted to be
         released) from the Liens created by the respective Security Document),
         such Collateral in each case shall be sold or otherwise disposed of
         free and clear of the Liens created by the Security Documents and the
         Administrative Agent shall take such

                                       9
<PAGE>

         actions as are appropriate in connection therewith. Without in any way
         limiting the foregoing, the Administrative Agent shall release its
         security interest in the Transferred Assets concurrently with the
         closing of the Permitted Receivables Financing, provided that the
         initial proceeds of the Permitted Receivables Financing shall be
         applied to pay in full all amounts payable under Section 2.10(c) in
         connection with the simultaneous reduction of the Revolving Credit
         Commitments pursuant to Section 2.10(a)(vi). The Administrative Agent
         and the Obligors shall execute, deliver and file appropriate documents
         to effectuate and reflect such release by the Administrative Agent of
         its security interest in the Transferred Assets, including UCC partial
         releases and an amendment to the Security Agreement.

         2.10     Amendment to Section 9.07. Section 9.07 of the Credit
Agreement is hereby amended to read in its entirety as follows:

                  9.07 Liens and Related Matters. No Obligor or Subsidiary
                       -------------------------
         shall, directly or indirectly, create, incur, assume or suffer to exist
         any Lien upon or with respect to any of their respective Property
         (including Collateral), whether now owned or hereafter acquired, or
         sell any such property or assets subject to an understanding or
         agreement, contingent or otherwise, to repurchase such property or
         assets or assign any right to receive income, or file or permit the
         filing of any financing statement under the UCC or any other similar
         notice of Lien under any similar recording or notice statute, except
         the following, which are herein collectively referred to as "Permitted
                                                                      ---------
         Liens":
         -----

                       (a)   Liens created pursuant to or permitted by the
         Security Documents;

                       (b)   Liens in existence on the date hereof and
         identified in Schedule 9.07;
                       -------------

                       (c)   Liens imposed by any Governmental Authority for
         taxes, assessments or charges not yet due or which are being contested
         in good faith and by appropriate proceedings if adequate reserves with
         respect thereto are maintained on the books of Borrower or the affected
         Subsidiary, as the case may be, in accordance with GAAP;

                       (d)   Liens in respect of Property of Borrower or any
         Subsidiary imposed by law which were incurred in the ordinary course of
         business, such as carriers', warehousemen's, landlords' and mechanics'
         Liens and other similar Liens arising in the ordinary course of
         business, in each case for sums the payment of which is not required by
         Section 9.03;

                       (e)   Pledges or deposits under worker's compensation,
         unemployment insurance and other social security legislation or the
         deposits securing the liability to insurance carriers;

                       (f)   Pledges or 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;

                                       10
<PAGE>

                       (g)   Easements, rights-of-way, restrictions or minor
         defects or irregularities in title incurred in the ordinary course of
         business and encumbrances consisting of zoning restrictions, easements,
         licenses, restrictions on the use of Real Property or minor
         imperfections in title thereto which, in the aggregate, are not
         material in amount, and which do not in any case materially detract
         from the value of the Real Property subject thereto or interfere with
         the ordinary conduct of the business of Borrower or any Subsidiary;

                       (h)   Liens upon tangible personal Property acquired
         after the Original Closing Date by Borrower or any Subsidiary, each of
         which Liens either (A) existed on such Property before the time of its
         acquisition and was not created in anticipation thereof, or (B) was
         created solely for the purpose of securing Indebtedness representing,
         or incurred to finance, refinance or refund, the cost of such Property
         or improvements thereon; provided, however, that (x) no such Lien shall
                                  --------  -------
         extend to or cover any Property of Borrower or such Subsidiary other
         than the Property so acquired and improvements thereon and (y) the
         principal amount of Indebtedness secured by any such Lien shall at no
         time exceed 100% of the fair market value of such Property at the time
         it was acquired;

                       (i)   Liens existing on any Property of any Person at the
         time such Person becomes a Subsidiary or is merged or consolidated with
         or into a Subsidiary and, in each case, not created in contemplation of
         or in connection with such event; provided, however, that such Liens do
                                           --------  -------
         not extend to any other Property of Borrower or the Subsidiaries;

                       (j)   Liens (excluding Liens on Collateral) not otherwise
         permitted hereunder securing obligations not at any time exceeding in
         the aggregate $15,000,000;

                       (k)   Liens securing obligations under Swap Contracts
         with any Lender or any Affiliate of any Lender;

                       (l)   Liens consisting of judgment or judicial attachment
         Liens (including prejudgment attachment) the enforcement of which is
         effectively stayed or payment of which is covered in full (subject to a
         customary deductible) by insurance or which do not otherwise result in
         an Event of Default under Section 10(h);

                       (m)   Liens securing obligations in respect of Capital
         Leases solely on Property subject to such Capital Leases;

                       (n)   The Commonwealth Option and the Commonwealth Right
         of First Refusal;

                       (o)   Any extension, renewal or replacement of the
         foregoing; provided, however, that the Liens permitted hereunder shall
                    --------  -------
         not cover any additional Indebtedness (other than Indebtedness
         permitted to be secured hereunder) or

                                       11
<PAGE>

          Property (other than like Property substituted for Property covered by
          such Lien); and

               (p)  Liens in favor of the SPS or the Receivables Financier
          created or deemed to exist in connection with the Permitted
          Receivables Financing (including any related filings of any financing
          statements), but only to the extent that any such Lien relates to the
          applicable Transferred Assets actually sold, contributed, financed or
          otherwise conveyed or pledged pursuant to such transaction.

     Except with respect to (i) specific Property encumbered pursuant to a Lien
     permitted to be incurred pursuant to this Section 9.07, (ii) specific
     Property to be sold pursuant to an executed agreement with respect to a
     Disposition consummated in accordance with this Agreement, or (iii) the
     documents and instruments executed in connection with the Permitted
     Receivables Financing (but only to the extent that the related prohibitions
     against other Liens pertain to the applicable Transferred Assets actually
     sold, contributed, financed or otherwise conveyed or pledged pursuant to
     the Permitted Receivables Financing), no Obligor will, nor will any of them
     permit any of their respective Subsidiaries to, directly or indirectly,
     enter into any agreement (other than the Basic Documents) prohibiting or
     restricting in any manner (directly or indirectly and including by way of
     covenant, representation or warranty or event of default) the creation or
     assumption of any Lien upon its Property, whether now owned or hereafter
     acquired.

     2.11 Amendment to Section 9.08. Section 9.08 of the Credit Agreement is
hereby amended to read in its entirety as follows:

          9.08 Indebtedness. No Obligor or Subsidiary shall, directly or
               ------------
     indirectly, create, incur or suffer to exist or be or become liable for any
     Indebtedness, except (each of which shall be given independent effect):

          (a)  Indebtedness under the Basic Documents;

          (b)  Indebtedness outstanding on the date hereof and specified on
     Schedule 9.08 to remain outstanding after the date hereof, and any
     -------------
     refinancings, refundings, renewals or extensions thereof on financial and
     other terms, in the reasonable judgment of Borrower, no more onerous to
     Borrower or any Subsidiary in the aggregate than the financial and other
     terms of such Indebtedness; provided, however, that the amount of such
                                 --------  -------
     Indebtedness is not increased at the time of such refinancing, refunding,
     renewal or extension and such Indebtedness shall not have a stated maturity
     or an average life shorter than that of the Indebtedness being refinanced;

          (c)  Indebtedness of Borrower or any Wholly Owned Subsidiary owing to
     Borrower or any Wholly Owned Subsidiary which is an Obligor; provided,
                                                                  --------
     however, that such Indebtedness shall not be held by any Person other than
     -------
     Borrower or a Wholly Owned Subsidiary which is an Obligor and shall not be
     subordinate to any other Indebtedness or other obligation of the Obligor
     other than the Revolving Credit Loans;

                                       12
<PAGE>

          (d)  Indebtedness of Borrower and the Subsidiaries secured by Liens
     permitted under Section 9.07(h) or (m) not exceeding in the aggregate
     $15,000,000 at any one time outstanding;

          (e)  Indebtedness arising from honoring a check, draft or similar
     instrument against insufficient funds; provided, however, that such
                                            --------  -------
     Indebtedness is extinguished within two Business Days of its incurrence;

          (f)  Obligations under operating leases permitted by Section 9.22 and
     Contingent Obligations permitted by Section 9.24;

          (g)  Unsecured Indebtedness incurred by any Foreign Subsidiary not to
     exceed $15,000,000 in the aggregate for all Foreign Subsidiaries at any
     time outstanding;

          (h)  Unsecured Indebtedness of Borrower or any Subsidiary, which is an
     Obligor in an aggregate principal amount not to exceed, together with
     Contingent Obligations (without duplication) under Section 9.24(d),
     $15,000,000 for Borrower and the Subsidiaries collectively at any time
     outstanding;

          (i)  Unsecured Indebtedness in an amount not to exceed $10,000,000
     incurred pursuant to certain solid waste disposal bonds or industrial
     revenue bonds issued after the date hereof by the City of Morgantown,
     Kentucky or any other governmental entity in a location in which Borrower
     or any Subsidiary owns any equipment, property, or other assets ;

          (j)  Indebtedness represented by amounts declared, payable as, or set
     apart for, Dividends permitted by Section 9.10 and Swap Contracts entered
     into in the ordinary course of business and designed to protect the
     Obligors against fluctuations in interest rates, currency exchange rates,
     commodity prices or similar risks; and

          (k)  Obligations in connection with the Permitted Receivables
     Financing.

          All intercompany debt shall be unsecured and subordinate in
right of payment to the Obligations.

     2.12 Amendment to Section 9.09. Section 9.09 of the Credit Agreement is
hereby amended as follows:

         (a)  Clauses (p) and (s) are hereby amended by deleting the phrase
    "until the Collateral Release Date," each time it appears therein.

         (b)  Clause (r) is amended to read in its entirety as follows:

                     (r) Investments by Borrower or any Subsidiary in the SPS
              in connection with the Permitted Receivables Financing;

         2.13  Amendment to Section 9.10. Clause (b) of Section 9.10 of the
Credit Agreement is hereby amended to read in its entirety as follows:

                                       13
<PAGE>

               (b)  The following Dividend Payments shall be permitted so long
          as no Default or Event of Default shall have occurred and be
          continuing at the time of such Dividend Payment nor would result
          therefrom: (i) purchases by Borrower of shares of its common stock
          pursuant to an existing equity forward contract, provided that the sum
          of the aggregate amount expended by Borrower for such purchases shall
          not exceed the principal amount of $5,000,000, and (ii) Borrower may
          declare and make cash Dividend Payments on its capital stock (other
          than purchases of its common stock permitted by clause (i) above) not
          to exceed in the aggregate $6,000,000 in each of fiscal 1999 and
          fiscal 2000, and $8,000,000 in any fiscal year thereafter.

     2.14 Amendment to Section 9.11. Section 9.11 of the Credit Agreement is
hereby amended to read in its entirety as follows:

     9.11 Financial Covenants.
          -------------------

          (a)  Maximum Debt to Capitalization Ratio. Borrower shall not permit
               ------------------------------------
          the Debt to Capitalization Ratio for any Measurement Period ending
          during any period set forth in the table below to be more than the
          ratio set forth opposite such period in the table below:

     ==========================================================================
                          Period                               Ratio
     --------------------------------------------------------------------------
     Date of this Agreement through 12/31/2001               0.60:1.00
     --------------------------------------------------------------------------
     1/1/2002 and thereafter                                 0.50:1.00
     ==========================================================================

          (b)  Minimum Interest Coverage Ratio. Borrower shall not permit the
               -------------------------------
          Interest Coverage Ratio for each Measurement Period specified below to
          be less than the ratio set forth opposite such Measurement Period in
          the table below:

     ===========================================================================
                Measurement Period Ending                          Ratio
     ---------------------------------------------------------------------------
     9/30/2000                                                   1.50:1.00
     ---------------------------------------------------------------------------
     12/31/2000, 3/31/2001 and 6/30/2001                         1.75:1.00
     ---------------------------------------------------------------------------
     9/30/2001                                                   2.00:1.00
     ---------------------------------------------------------------------------
     12/31/2001                                                  2.25:1.00
     ---------------------------------------------------------------------------
     3/31/2002, 6/30/2002, 9/30/2002 and
     12/31/2002                                                  2.50:1.00
     ---------------------------------------------------------------------------
     3/31/2003 and thereafter                                    2.75:1.00
     ===========================================================================

          (c)  Minimum Consolidated Net Worth. Borrower shall not permit
               ------------------------------
          Consolidated Net Worth at any time to be less than $154,600,000 plus
                                                                          ----
          the sum of

                                       14
<PAGE>

          (x) 50% of consolidated net income of Borrower determined in
          accordance with GAAP for each such fiscal quarter (if positive)
          occurring after June 30, 1999 and (y) 100% of the net proceeds of all
          Equity Issuances occurring after the date hereof.

               (d)  Leverage Ratio.  Borrower shall not permit the Leverage
                    --------------
          Ratio for each Measurement Period specified below to exceed the ratio
          set forth opposite such Measurement Period in the table below:

================================================================================
            Measurement Period Ending                             Ratio

--------------------------------------------------------------------------------
9/30/2000, 12/31/2000, 3/31/2001 and 6/30/2001                  4.25:1.00
--------------------------------------------------------------------------------
9/30/2001                                                       4.00:1.00
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
12/31/2001                                                      3.50:1.00
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
3/31/2002 and thereafter                                        3.00:1.00
================================================================================

               (e)  Measurement Dates.  The covenants in clauses (a), (b), (c)
                    -----------------
          and (d) of this Section 9.11 shall be measured as of the end of each
          fiscal quarter, beginning with September 30, 2000.

     2.15 Amendment to Section 9.12. Section 9.12 of the Credit Agreement is
hereby amended to read in its entirety as follows:

          9.12  Pledge of Additional Collateral. Promptly, and in any event
                -------------------------------
         within 30 days, after the acquisition of any Property of the type that
         would have constituted Collateral at the Original Closing Date
         (including the capital stock of any Subsidiary hereafter created or
         acquired) other than Real Property (the "Additional Collateral"), each
                                                  ---------------------
         Obligor and each Wholly Owned Subsidiary (other than the SPS and any
         Foreign Subsidiary) shall take all action necessary or desirable,
         including the execution and delivery of all such agreements,
         assignments, documents and instruments (including amendments to the
         Basic Documents) and the filing of appropriate financing statements
         under the provisions of the UCC or applicable governmental requirements
         in each of the offices where such filing is necessary or appropriate,
         to grant the Administrative Agent for the benefit of the Lenders a duly
         perfected first priority Lien on such Property pursuant to and to the
         full extent required by the Security Documents and this Agreement;
         provided, however, that not more than 65% of the capital stock of any
         --------  -------
         "first tier" Foreign Subsidiary need be pledged, no capital stock of
         any Foreign Subsidiary which is not a "first tier" Foreign Subsidiary
         need be pledged, and no capital stock of the SPS need be pledged. The
         costs of all actions taken by the parties in connection with the pledge
         of Additional Collateral or in connection with any Mortgage, including
         reasonable costs of counsel for the Administrative Agent, shall be paid
         by the Obligors promptly following written demand.

                                       15
<PAGE>

         2.16  Amendment to Section 9.13. Section 9.13 of the Credit Agreement
  is hereby amended to read in its entirety as follows:

                  9.13     Security Interests.
                           ------------------

         (a)   Each Obligor and each Subsidiary shall, promptly, upon the
         reasonable request of any Lender, at Borrower's expense, execute,
         acknowledge and deliver, or cause the execution, acknowledgment and
         delivery of, and thereafter register, file or record, or cause to be
         registered, filed or recorded, in an appropriate governmental office,
         any document or instrument supplemental to or confirmatory of the
         Security Documents or otherwise deemed by the Administrative Agent
         necessary or desirable for the continued validity, perfection and
         priority of the Liens on the collateral covered thereby.

         (b)   Each Obligor and each Subsidiary shall deliver or cause to be
         delivered to the Administrative Agent from time to time such other
         documentation, consents, authorizations, approvals and orders in form
         and substance reasonably satisfactory to the Administrative Agent as
         the Administrative Agent shall reasonably deem necessary to perfect or
         maintain the Liens on the Collateral.

         2.17  Amendment to Section 9.20. Section 9.20 of the Credit Agreement
is hereby amended to read in its entirety as follows:

               Section 9.20 Limitation on Certain Restrictions Affecting
                            --------------------------------------------
         Subsidiaries. No Obligor or Subsidiary shall, directly or indirectly,
         ------------
         create or otherwise cause or suffer to exist or become effective any
         encumbrance or restriction on the ability of any such Subsidiary to (a)
         pay dividends or make any other distributions on such Subsidiary's
         capital stock or any other interest or participation in its profits
         owned by Borrower or any Subsidiary, or pay any Indebtedness or any
         other obligation owed to Borrower or any Subsidiary, (b) make
         Investments in or to Borrower or any Subsidiary or (c) transfer any of
         its Property to Borrower or any Subsidiary, except for (i) such
         encumbrances or restrictions existing under or by reason of applicable
         law, (ii) such encumbrances or restrictions existing by, under or by
         reason of the Basic Documents, (iii) such restrictions with respect to
         the transfer of those assets subject to a Lien permitted under Section
         9.07, (iv) customary provisions restricting subletting or assignment of
         any lease governing a leasehold interest of Borrower or any Subsidiary,
         (v) with respect to restrictions described in clause (c) only,
         restrictions in any agreement relating to any Disposition which is
         permitted under this Agreement, (vi) the Commonwealth Option and the
         Commonwealth Right of First Refusal, and (vii) such encumbrances or
         restrictions in respect of the SPS under the documents executed in
         connection with the Permitted Receivables Financing.

         2.18  Amendment to Section 9.21. Section 9.21 of the Credit Agreement
is hereby amended to read in its entirety as follows:

               9.21 Additional Obligors. Upon Borrower or any Wholly Owned
                    -------------------
         Subsidiary creating or acquiring a Wholly Owned Subsidiary (other than
         the SPS or a Foreign Subsidiary) after the Original Closing Date (each
         such Subsidiary referred to herein as an

                                       16
<PAGE>

         "Additional Obligor" and collectively as the "Additional Obligors"),
          ------------------                           -------------------
         Borrower shall cause such Wholly Owned Subsidiary to execute and
         deliver a Joinder Agreement substantially in the Form of Exhibit K and
                                                                  ---------
         all such other agreements, guarantees, documents and certificates
         (including any amendments to the Basic Documents) as the Administrative
         Agent may reasonably request and do such other acts and things as the
         Administrative Agent may reasonably request in order to have such
         Wholly Owned Subsidiary guarantee the Obligations in accordance with
         the terms of the Basic Documents and pledge all Property (other than
         Real Property and stock of the SPS) pursuant to the Security Agreement.

         2.19  Amendment to Section 9.23. Section 9.23 of the Credit Agreement
is hereby amended to read in its entirety as follows:

               9.23 Sale or Discount of Receivables. No Obligor or Subsidiary
                    -------------------------------
         shall, directly or indirectly, sell, with or without recourse, or
         discount, or otherwise sell for less than the face value thereof, notes
         or accounts receivables, other than in connection with trade discounts
         in the ordinary course of business or consistent with past practice and
         other than as permitted by Section 9.06(h), (i) or (o).

         2.20  Amendment to Events of Default. Section 10 of the Credit
Agreement is hereby amended as follows:

               (a)  Clause (d) is amended by deleting the phrase ", until the
         Collateral Release Date," and the parenthetical phrase "(until the
         Collateral Release Date)" therefrom.

               (b)  Clause (k) is hereby deleted in its entirety.

               (c)  Clause (l) is hereby amended to read in its entirety as
         follows:

                    (l)  Any Security Document after delivery thereof at any
               time shall cease to be in full force and effect or shall for any
               reason fail to create or cease to maintain a valid and duly
               perfected first priority security interest in and Lien upon a
               material portion of the Collateral; or

               (d)  Clauses (j) and (m) are each amended by adding the word "or"
          immediately following the semicolon at the end of each such clause.

               (e)  The following clause (n) is added immediately following
         clause (m), such clause (n) to read in its entirety as follows:

               (n)  The occurrence of any event of default, termination event,
         liquidation event, or other event however designated that causes or
         permits the liquidation or termination of the Permitted Receivables
         Financing or the termination of availability of advances under the
         Permitted Receivables Financing prior to the scheduled liquidation
         period.

                                       17
<PAGE>

         2.21  Deletion of Certain Sections. The Credit Agreement is hereby
amended by deleting Sections 2.12, 9.19 and 12.16 in their respective
entireties.

         2.22  Corrections. The Credit Agreement is hereby amended to make the
following corrections:

         (a)   Each reference to the word "subsidiary" or "subsidiaries" is
hereby amended to read "Subsidiary" or "Subsidiaries", as the case may be, each
time such word appears in (a) the definitions of "ERISA Group," "Net Cash
Payments," "Net Proceeds" and "Taking" in Section 1.01 of the Credit Agreement,
and (b) Sections 8.14, 9.03, 9.09(g) and (m), and 11.06 of the Credit Agreement.

         (b)   Each reference to the word "obligor" or "obligors" is hereby
amended to read "Obligor" or "Obligors", as the case may be, each time such word
appears in (a) the definitions of "Net Award," "Net Proceeds" and "Taking" in
Section 1.01 of the Credit Agreement, and (b) Sections 7.02(i)(b), 9.09(k),
9.22, 9.24 and 10(d) of the Credit Agreement.

         (c)   Clause (ii) of Section 1.04(c) is hereby amended to read "(ii) a
Section or other subdivision is to a Section or other subdivision of this
Agreement."

         (d)   Each reference to the phrase "wholly Owned Subsidiary" or "wholly
owned Subsidiary" appearing in Section 9.09(c), (k) and (v) of the Credit
Agreement is hereby amended to read "Wholly Owned Subsidiary".

         (e)   Section 9.09(u) of the Credit Agreement is amended to delete the
phrase "pursuant to Section 9.11(d)(2)" therefrom.

         2.23  Amendment to Annex C. Annex C to the Credit Agreement is hereby
amended to read in its entirety as set forth on Exhibit 1 hereto.

         2.24  Amendment to Exhibit C. Exhibit C to the Credit Agreement is
hereby amended to read in its entirety as set forth on Exhibit 2 hereto.

         2.25  Amendment to Security Agreement. The Lenders hereby consent to
the Administrative Agent entering into an appropriate amendment to the Security
Agreement, concurrently with the closing of the Permitted Receivables Financing,
(a) to amend the definition of "Pledged Collateral" therein to exclude the
Transferred Assets released pursuant to Section 9.06 of the Credit Agreement, as
amended hereby, and (b) to amend Schedule 2 to the Security Agreement to reflect
the correct information regarding the Chief Executive Offices of certain
Subsidiaries, as specified in Section 4.2 hereof.

                                       18
<PAGE>

                                  ARTICLE III

                             Conditions Precedent
                             --------------------

     3.1  Conditions. The effectiveness of this Amendment is subject to the
satisfaction of the following conditions precedent:

          (a)  Representations and Warranties. The representations and
               ------------------------------
          warranties contained herein and in all other Basic Documents, as
          amended hereby, shall be true and correct as of the date hereof as if
          made on the date hereof.

          (b)  No Default. No Default or Event of Default shall have occurred
               ----------
          and be continuing.

          (c)  Corporate Matters. All corporate proceedings taken in connection
               -----------------
          with the transactions contemplated by this Amendment and all
          documents, instruments, and other legal matters incident thereto shall
          be satisfactory to the Administrative Agent and its legal counsel,
          Locke Liddell & Sapp LLP.

          (d)  Additional Documentation.  The Administrative Agent shall have
               ------------------------
          received such additional approvals, opinions, or documents as the
          Administrative Agent or its legal counsel, Locke Liddell & Sapp LLP,
          may reasonably request.

          (e)  Additional Fixture Filings. Borrower shall have executed and
               --------------------------
          delivered to Administrative Agent, UCC financing statements in form
          and substance satisfactory to Administrative Agent for filing in the
          real property records in each jurisdiction where any Collateral is
          located and fixture filings have not been filed in favor of
          Administrative Agent.

          (f)  Fees. Borrower shall have paid any and all fees payable to any
               ----
          Lender, the Administrative Agent or any of its Affiliates pursuant to
          the Credit Agreement or any fee letter or agreement entered into by
          such parties.

                                   ARTICLE IV

                  Ratifications, Representations and Warranties
                  ---------------------------------------------

         4.1 Ratifications. The terms and provisions set forth in this Amendment
shall modify and supersede all inconsistent terms and provisions set forth in
the Credit Agreement and except as expressly modified and superseded by this
Amendment, the terms and provisions of the Credit Agreement and the other Basic
Documents are ratified and confirmed and shall continue in full force and
effect. The Obligors agree that the Credit Agreement, as amended hereby, and the
other Basic Documents shall continue to be legal, valid, binding and enforceable
in accordance with their respective terms. The Obligors ratify and confirm that
all guaranties, assurances and Liens granted, conveyed or assigned to
Administrative Agent under the Basic Documents (as they may have been renewed,
extended and amended) are not released, reduced

                                       19
<PAGE>

or otherwise adversely affected by this Amendment and continue to guarantee,
assure and secure full payment and performance of the present and future
Obligations, and agree to perform such acts and duly authorize, execute,
acknowledge, deliver, file and record such additional documents and certificates
as Administrative Agent may reasonably request in order to create, perfect,
preserve and protect those guaranties, assurances and Liens.

         4.2 Representations and Warranties. Each Obligor hereby represents and
warrants to the Administrative Agent and the Lenders that (a) the execution,
delivery, and performance by the Obligors of this Amendment and compliance with
the terms and provisions hereof have been duly authorized by all requisite
action on the part of each such Person and do not and will not violate or
conflict with, or result in a breach of, or require any consent under (i) the
articles of incorporation, certificate of incorporation, bylaws, partnership
agreement, regulations or other organizational documents of any such Person,
(ii) any applicable law, rule, or regulation or any order, writ, injunction, or
decree of any Governmental Authority, or (iii) any material agreement or
instrument to which any such Person is a party or by which any of them or any of
their property is bound or subject, (b) the representations and warranties
contained in the Credit Agreement, as amended hereby, and any other Basic
Document are true and correct on and as of the date hereof as though made on and
as of the date hereof, except that the chief executive office of each Subsidiary
specified on Exhibit 3 hereto is located at the address specified for such
Subsidiary on Exhibit 3 hereto, rather than the address specified on Schedule 2
to the Security Agreement, (c) appropriate UCC financing statements have been
filed in all appropriate filing offices and jurisdictions so as to perfect the
security interests granted to the Administrative Agent under the Security
Agreement, and (d) no Default or Event of Default has occurred and is
continuing.

                                    ARTICLE V

                                  Miscellaneous
                                  -------------

         5.1 Survival of Representations and Warranties. All representations and
warranties made in this Amendment shall survive the execution and delivery of
this Amendment, and no investigation by the Administrative Agent or any Lender
or any closing shall affect the representations and warranties or the right of
the Administrative Agent or any Lender to rely upon them.

         5.2 Reference to Credit Agreement. Each of the Basic Documents,
including the Credit Agreement and any and all other agreements, documents, or
instruments now or hereafter executed and delivered pursuant to the terms hereof
or pursuant to the terms of the Credit Agreement as amended hereby, are hereby
amended so that any reference in such Basic Documents to the Credit Agreement
shall mean a reference to the Credit Agreement as amended hereby.

         5.3 Expenses of the Administrative Agent. Borrower agrees to pay on
demand all costs and expenses incurred by the Administrative Agent in connection
with the preparation, negotiation, and execution of this Amendment and any and
all amendments, modifications, and supplements thereto, including without
limitation the costs and fees of the Administrative

                                       20
<PAGE>

Agent's legal counsel, and all costs and expenses incurred by the Administrative
Agent in connection with the enforcement or preservation of any rights under the
Credit Agreement, as amended hereby, or any other Basic Document, including
without limitation the costs and fees of the Administrative Agent's legal
counsel.

         5.4 Severability. Any provision of this Amendment held by a court of
competent jurisdiction to be invalid or unenforceable shall not impair or
invalidate the remainder of this Amendment and the effect thereof shall be
confined to the provision so held to be invalid or unenforceable.

         5.5 APPLICABLE LAW. THIS AMENDMENT SHALL BE DEEMED TO HAVE BEEN MADE
AND TO BE PERFORMABLE IN DALLAS, DALLAS COUNTY, TEXAS AND SHALL BE GOVERNED BY
AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS.

         5.6 Successors and Assigns. This Amendment is binding upon and shall
inure to the benefit of the Obligors, Lenders, the Syndication Agent, the
Documentation Agent, the Administrative Agent and their respective successors
and assigns, except Obligors shall not assign or transfer any of their
respective rights or obligations hereunder without the prior written consent of
the Administrative Agent.

         5.7 Counterparts. This Amendment may be executed in one or more
counterparts, each of which when so executed shall be deemed to be an original,
but all of which when taken together shall constitute one and the same
instrument. This Amendment shall not be effective unless and until the
Administrative Agent, the Lenders which constitute "Majority Lenders" as defined
in the Credit Agreement and the Obligors have each executed and delivered a
counterpart hereof and all conditions to the effectiveness hereof have been
satisfied in full, whereupon this Amendment shall become a binding agreement,
enforceable in accordance with its terms and the amendments effectuated hereby
shall become effective as of the date first above written.

         5.8 Headings. The headings, captions, and arrangements used in this
Amendment are for convenience only and shall not affect the interpretation of
this Amendment.

         5.9 Release of Claims. The Obligors each hereby acknowledge and agree
that none of them has any and there are no claims or offsets against or defenses
or counterclaims to the terms and provisions of or the obligations of any
Obligor created or evidenced by the Credit Agreement or any of the other Basic
Documents, and to the extent any such claims, offsets, defenses or counterclaims
exist, each Obligor hereby waives, and hereby releases the Administrative Agent,
the Syndication Agent, the Documentation Agent and each of the Lenders from, any
and all claims, offsets, defenses and counterclaims, whether known or unknown,
such waiver and release being with full knowledge and understanding of the
circumstances and effects of such waiver and release and after having consulted
legal counsel with respect thereto.

         5.10 ENTIRE AGREEMENT. THIS AMENDMENT, THE OTHER BASIC DOCUMENTS AND
ALL OTHER INSTRUMENTS, DOCUMENTS AND AGREEMENTS EXECUTED AND DELIVERED IN
CONNECTION WITH THIS AMENDMENT EMBODY

                                       21
<PAGE>

THE FINAL, ENTIRE AGREEMENT AMONG THE PARTIES HERETO AND SUPERSEDE ANY AND ALL
PRIOR COMMITMENTS, AGREEMENTS, REPRESENTATIONS AND UNDERSTANDINGS, WHETHER
WRITTEN OR ORAL AND MAY NOT BE CONTRADICTED OR VARIED BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OR DISCUSSIONS OF THE PARTIES
HERETO. THERE ARE NO ORAL AGREEMENTS AMONG THE PARTIES HERETO.

                    [REMAINDER OF PAGE INTENTIONALLY BLANK]

                                       22
<PAGE>

         EXECUTED as of the date first written above.

                                  OBLIGORS:

                                  IMCO RECYCLING INC.

                                  By:___________________________________________
                                     Name:  James B. Walburg
                                     Title: Senior Vice President

                                  IMCO INVESTMENT COMPANY
                                  IMCO RECYCLING OF INDIANA INC.
                                  IMCO ENERGY CORP.
                                  IMCO RECYCLING OF ILLINOIS INC.
                                  ALCHEM ALUMINUM, INC.
                                  IMCO RECYCLING OF MICHIGAN, L.L.C.
                                  PITTSBURG ALUMINUM, INC.
                                  INTERAMERICAN ZINC, INC.
                                  IMCO RECYCLING OF CALIFORNIA, INC.
                                  IMCO INTERNATIONAL, INC.
                                  IMCO RECYCLING OF OHIO INC.
                                  IMSAMET, INC.
                                  IMCO RECYCLING OF IDAHO INC.
                                  IMCO RECYCLING OF UTAH INC.
                                  ROCK CREEK ALUMINUM, INC.
                                  U.S. ZINC CORPORATION
                                  GULF REDUCTION CORPORATION
                                  MIDWEST ZINC CORPORATION
                                  WESTERN ZINC CORPORATION
                                  METALCHEM, INC.
                                  U.S. ZINC EXPORT CORPORATION
                                  ALCHEM ALUMINUM SHELBYVILLE INC.
                                  INDIANA ALUMINUM INC.

                                  By:___________________________________________
                                     Name:  James B. Walburg
                                     Title: Vice President of each of the above-
                                     named entities

                                       23
<PAGE>

                                    IMCO INDIANA PARTNERSHIP L.P.

                                    By IMCO Energy Corp., its General Partner

                                    By:_________________________________________
                                       Name:  James B. Walburg
                                       Title: Vice President

                                    IMCO MANAGEMENT PARTNERSHIP, L.P.

                                    By IMCO Recycling Inc., its General Partner

                                    By:_________________________________________
                                       Name:  James B. Walburg
                                       Title: Senior Vice President

                                    LENDERS:

                                    THE CHASE MANHATTAN BANK
                                    (successor by merger to Chase Bank of Texas,
                                    National Association),
                                    as Administrative Agent and a Lender

                                    By:
                                       _________________________________________
                                       Buddy Wuthrich
                                       Vice President

                                    BANK OF AMERICA, N.A.,
                                       as Syndication Agent and a Lender

                                    By:_________________________________________
                                       Name:  Suzanne B. Smith
                                       Title: Managing Director

                                       24
<PAGE>

                                MERRILL LYNCH CAPITAL CORPORATION
                                as a Lender

                                By:____________________________________________
                                   Name:_______________________________________
                                   Title:______________________________________

                                BANK OF TOKYO-MITSUBISHI, LTD.,
                                as a Lender

                                By:____________________________________________
                                   Name:  Douglas M. Barnell
                                   Title: Vice President

                                By:____________________________________________
                                   Name:_______________________________________
                                   Title:______________________________________

                                BANK ONE, NA (formerly known as The First
                                National Bank of Chicago) (Main Office
                                Chicago),
                                as a Lender

                                By:____________________________________________
                                   Name:  Thomas R. Freas
                                   Title: Managing Director

                                PNC BANK, NATIONAL ASSOCIATION,
                                as Documentation Agent and a Lender

                                By:____________________________________________
                                   Name:  Lynn Koncz
                                   Title: Vice President

                                       25
<PAGE>

                                DG BANK DEUTSCHE
                                GENOSSENSCHAFTSBANK, AG, as a Lender

                                By:____________________________________________
                                   Name:  Mark K. Connelly
                                   Title: Vice President

                                By:____________________________________________
                                   Name:_______________________________________
                                   Title:______________________________________

                                   Title:______________________________________

                                AMSOUTH BANK  (successor  in interest by
                                merger to First American National Bank), as a
                                Lender

                                By:____________________________________________
                                   Name:  Seth Butler
                                   Title: Corporate Bank Officer

                                NATIONAL CITY BANK, as a Lender

                                By:____________________________________________
                                   Name:  Wilmer J. Jacobs
                                   Title: Assistant Vice President

                                COMERICA BANK, as a Lender

                                By:____________________________________________
                                   Name:_______________________________________
                                   Title:______________________________________

                                       26
<PAGE>

                                WELLS FARGO BANK TEXAS, NATIONAL
                                ASSOCIATION, as a Lender

                                By:_______________________________________
                                   Name:  Zachary S. Johnson
                                   Title: Assistant Vice President

                                BANK HAPOALIM, SAN FRANCISCO
                                BRANCH, as a Lender

                                By:_______________________________________
                                   Name:__________________________________
                                   Title:_________________________________

                                       27

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00017-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00017-of-00352.parquet"}]]