1
                                 EXHIBIT 10.12
   2
===============================================================================
                            STOCK PURCHASE AGREEMENT
===============================================================================

                                     Among

                           Larizza Industries, Inc.,
                        an Ohio corporation ("Seller")

                                    - and -

                       General Nuclear Acquisition Corp.,
                     a Pennsylvania corporation ("Buyer")

                                    - and -

                             General Nuclear Corp.,
                       a Pennsylvania corporation ("GNC")

                               As of June 1, 1995


   3
                                     INDEX




SECTION                                                                    PAGE
-------                                                                    ----
                                                                      
1.      SALE AND PURCHASE OF SHARES                                          1

        1.1     Agreement to Purchase and Sell Shares                        1
        1.2     Purchase Price and Payment                                   1
        1.3     The Closing                                                  2

2.      REPRESENTATIONS AND WARRANTIES                                       2

        2.1     Representations and Warranties of Seller                     2
                2.1.1  Organization and Qualification                        2
                2.1.2  Authority Relative to This Agreement                  2
                2.1.3  Consents and Approvals; No Violation                  2
                2.1.4  Capitalization                                        3
                2.1.5  Title to Shares                                       3
                2.1.6  Rights to Acquire Shares                              3
                2.1.7  Tax Liabilities                                       3
                2.1.8  Litigation and Claims                                 3
        2.2     Representations and Warranties of Buyer                      4
                2.2.1  Organization and Qualification                        4
                2.2.2  Authority Relative to This Agreement                  4
                2.2.3  Consents and Approvals; No Violation                  4
                2.2.4  Financial Capacity                                    5
                2.2.5  Investment Intent and Access to Information           5
                2.2.6  Accredited Investor                                   5
                2.2.7  Licenses                                              5
                2.2.8  Litigation and Claims                                 5
                2.2.9  Performance of Obligations                            6
                2.2.10 Access for Audit                                      6
                2.2.11 Disclosure of Material Fact                           6

3.      COVENANTS BEFORE CLOSING                                             6

        3.1     Covenants of Seller
                3.1.1  Approval of Sale of Purchased Assets                  6
                3.1.2  Consents                                              6
                3.1.3  Delivery of Books and Records                         6
        3.2     Covenants of GNC and Buyer                                   7
                3.2.1  Confidentiality                                       7
                3.2.2  Approval of Sale of Purchased Assets                  7
                3.2.3  INTENTIONALLY OMITTED                                 7
                3.2.4  Consents                                              7


                                      (i)
   4


SECTION                                                                                PAGE
-------                                                                                ----
                                                                                 
                3.2.5   Further Assurances                                              7
                3.2.6   Tax Matters                                                     7

4.      CONDITIONS TO CLOSING                                                           8

        4.1     Conditions to Buyer's Obligations                                       8
                4.1.1   Accuracy of Seller's Representations and Warranties             8
                4.1.2   Compliance with Covenants                                       8
                4.1.3   No Material Casualty                                            8
                4.1.4   No Material Litigation                                          8
                4.1.5   No Bankruptcy                                                   8
                4.1.6   Resignations                                                    8
        4.2     Conditions to Seller's Obligations                                      8
                4.2.1   Accuracy of Buyer's Representations and Warranties              8
                4.2.2   Compliance with Covenants                                       8
                4.2.3   Certificate of Buyer and Officers                               8
                4.2.4   No Material Casualty                                            9
                4.2.5   No Material Litigation                                          9
        4.3     Buyer's Remedy for Failure of Condition                                 9
        4.4     Seller's Remedy for Failure of Condition                                9

5.      WARRANTIES; INDEMNIFICATION                                                     9

        5.1     Survival                                                                9
        5.2     Indemnity by Seller                                                     9
        5.3     Indemnity by Buyer                                                      10
        5.4     Defense of Claims                                                       10
        5.5     Limitation of Liability                                                 11
                5.5.1   Seller's Limits                                                 11
                5.5.2   Buyer's Limits                                                  11

6.      OTHER COVENANTS AND AGREEMENTS                                                  11

        6.1     Sale Restriction                                                        11
        6.2     Performance of Obligations                                              11
        6.3     Brokerage                                                               11
        6.4     Expenses                                                                12
        6.5     No Disclosures                                                          12
        6.6     Plant Closing Liability                                                 12
        6.7     Books and Records                                                       12

7.      MISCELLANEOUS                                                                   12

        7.1     Notices                                                                 12


                                     (ii)

   5



Section                                                        Page
-------                                                        ----
                                                              

        7.2   Entire Agreement                                  13
        7.3   Waivers and Amendments                            13
        7.4   Governing Law and Forum                           13
        7.5   Variations in Pronouns                            14
        7.6   Counterparts                                      14
        7.7   Exhibits                                          14
        7.8   Headings                                          14
        7.9   Binding Effect                                    14
        7.10  Severability                                      14
        7.11  Survival of Provision                             14
        7.12  Acknowledgement                                   14

          


                                     (iii)
   6
                            STOCK PURCHASE AGREEMENT


        THIS STOCK PURCHASE AGREEMENT (this "Agreement") is made as of June 
1, 1995, among Larizza Industries, Inc., an Ohio corporation ("Seller") and 
General Nuclear Acquisition Corp, a Pennsylvania corporation ("Buyer").


                                    RECITALS


        A.  Seller is the owner of all of the issued and outstanding capital 
stock of General Nuclear Corp., a Pennsylvania corporation ("GNC").

        B.  GNC is engaged in the business of manufacturing high precision 
valves, valve components and specialized fasteners for the cooling systems of 
nuclear reactors used in the United States Navy Nuclear submarines and air 
craft carriers (the "Business").

        C.  Seller desires to sell to Buyer, and Buyer desires to buy from 
Seller, all of the issued and outstanding shares of GNC's capital stock upon 
the terms and conditions set forth in this Agreement.

        THEREFORE, the parties agree as follows:

1.      SALE AND PURCHASE OF SHARES.

        1.1  Agreement to Purchase and Sell Shares. Upon the terms and/ 
subject to the conditions set forth in this Agreement, at the Closing (as 
defined in Section 1.3), Seller shall sell and deliver to Buyer, and Buyer 
shall buy from Seller, 7,544 Common Shares and 11,316 Preferred Shares of GNC 
constituting all of the issued and outstanding capital stock of GNC (the 
"Shares"). The certificates for the Shares shall, when so delivered by 
Seller, be duly endorsed for transfer to Buyer, or have an executed stock power 
endorsed to Buyer attached to the certificate.

        1.2  Purchase Price and Payment.  Subject to the adjustment provisions 
contained in Section 1.2(c), the purchase price (the "Purchase Price") for 
the shares shall be as follows:

             (a)  $1,242,642 payable by wire transfer delivered by Buyer to 
        Seller at the Closing; and

             (b)  Within 30 days after the Closing, Seller will determine 
        the net cash transfer since May 17, 1995 through the Closing (the 
        "Period") from Seller to GNC or from GNC to Seller, as the case 
        may be. If based upon the Seller's calculation, the Seller has 
        contributed to GNC net cash during the Period, the Buyer shall pay 
        the amount of such net cash to Seller immediately in cash. If based 
        upon the Seller's calculation, GNC has paid to Seller net cash 
        during the Period, Seller shall pay Buyer the amount of the net cash 
        immediately in cash.

Buyer acknowledges and agrees that Seller's agreement to sell the Shares to 
Buyer is in reliance upon, and conditioned upon, GNC retaining all of its 
liabilities and obligations, which constitutes

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part of the Purchase Price. The obligations which remain with GNC include the 
performance of ongoing contracts. Buyer also acknowledges and agrees that the 
Purchase Price was based upon and reflects GNC's retention and performance of 
such liabilities and obligations.

        1.3  The Closing.  The sale and purchase of the Shares pursuant to this 
Agreement shall be closed and consummated (the "Closing") at 9:00 a.m. at the 
offices of Seller, 201 W. Big Beaver Road, Suite 1040, Troy, Michigan 48084, on 
June 1, 1995, or at such other time and place as may be mutually agreeable to 
the parties hereto (the "Closing Date"). At the Closing, Seller shall deliver 
the Shares pursuant to Section 1.1, Buyer shall pay $1,242,642 to Seller, and 
Buyer and Seller shall comply with the applicable covenants and conditions to 
closing set forth in Sections 3 and 4.


2.      REPRESENTATIONS AND WARRANTIES.

        2.1  Representations and Warranties of Seller.  Seller represents and 
warrants to Buyer the following as of the date of this Agreement and as of the 
Closing Date.

                2.1.1  Organization and Qualification.  Seller and GNC are
        corporations duly organized, validly existing and in good standing under
        the laws of their respective states of incorporation. GNC has all
        requisite corporate power and authority to own, lease, and operate its
        assets, properties and Business and to carry on its Business as now
        being conducted. GNC is duly qualified and is in good standing in each
        jurisdiction in which the nature or conduct of its Business or the
        character or location of its properties (owned or leased) makes such
        qualification necessary, except where failure to be so qualified would
        not have a material adverse effect on the Business.

                2.1.2  Authority Relative to This Agreement.  Seller has full
        corporate power and authority to enter into and perform this Agreement.
        The execution and performance by Seller of this Agreement have been duly
        and validly authorized on behalf of Seller by its Board of Directors. No
        other corporate action by Seller is necessary to authorize Seller's
        execution and performance of this Agreement. This Agreement has been
        fully and validly executed and delivered by Seller and constitutes a
        valid and binding agreement of Seller, enforceable against Seller in
        accordance with its terms, except as it may be limited by bankruptcy,
        insolvency, reorganization, moratorium or other similar laws relating to
        creditors' rights and except that the remedy of specific performance and
        injunctive and other forms of equitable relief are subject to equitable
        defenses and to the discretion of the court before which any proceedings
        may be brought.

                2.1.3  Consents and Approvals; No Violation.  Except for any
        consents required under customer and supplier purchase orders,
        government contracts, service agreements, software licenses, insurance
        policies, employee benefit plans, employment agreements, agreements with
        sales representatives, licenses and permits and real and personal
        property leases and in connection with any customer-owned tooling,
        designs or drawings (which consents the parties acknowledge are not
        being obtained and which are hereby waived), and except as set forth in
        the attached Exhibit 2.1.3, neither the execution nor the performance by
        Seller of this Agreement, (a) will require any authorization, consent or
        approval of any governmental or regulatory authority or of any other
        person or entity, the absence of which would have a material adverse
        effect on the Business, (b) will conflict 


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        with, or breach any provision of, the Articles of Incorporation, 
        regulations or bylaws of Seller or GNC, (c) will conflict with, 
        in any material respect, violate or breach, in any material respect,
        any provision of, or require the consent of any governmental agency 
        or body or any third party, the absence of which would have a 
        material adverse effect on the Business, under, any of the provisions 
        of any material authorization or order of any governmental agency or 
        body or any third party, or any material note, lease, agreement or 
        other instrument or obligation to which Seller or GNC is a party, 
        or by which either of them or any of GNC's properties or assets 
        may be bound, or (d) will violate, in any material respect, 
        any material order, injunction, or arbitration award, or any 
        statute, rule, regulation or ruling of any court or governmental 
        authority, United States or foreign, applicable to Seller, GNC or 
        the Shares.

                2.1.4  Capitalization.  The authorized capital stock and the 
        outstanding capital stock of GNC are as listed on the attached 
        Exhibit 2.1.4. The shares described on Exhibit 2.1.4 represent all 
        of the issued and outstanding shares of capital stock of GNC of 
        any class or nature whatsoever. All of the outstanding common 
        shares of GNC are validly issued, fully paid, nonassessable, and 
        free of exercisable preemptive rights.

                2.1.5  Title to Shares.  On the date of the Closing, Seller 
        shall have good title to all of the Shares, free and clear of all 
        pledges, liens, encumbrances, security interests, warrants, calls,
        commitments, subscriptions, agreements, voting trusts or agreements,
        proxies, unpaid taxes, claims and options of whatever nature.

                2.1.6  Rights to Acquire Shares. There is no oral or written 
        subscription, option, warrant, call, right, contract, agreement, 
        commitment, understanding or arrangement relating to the issuance, 
        sale, delivery or transfer by GNC or by Seller, of the capital stock 
        of GNC, including any rights of conversion or exchange under any 
        outstanding security or any other instruments.

                2.1.7  Tax Liabilities. GNC has filed all federal tax returns 
        required to be filed by it. All such tax returns are true and correct 
        in all material respects. Except as set forth on the attached 
        Exhibit 2.1.7, GNC has paid all federal taxes that have become due.
        GNC has properly withheld from the salaries, wages or other 
        compensation paid or payable to its officers, employees or other 
        persons, and has paid to the appropriate federal taxing authorities,
        all amounts required to be withheld therefrom under applicable 
        laws, rules or regulations. Seller shall file, at its expense, the 
        federal tax returns due for GNC for the period through the Closing 
        Date as part of the consolidated return being filed for Seller and 
        shall pay all federal taxes that may be due based upon those income 
        tax returns. Buyer shall be responsible for filing any and all 
        federal tax returns for GNC for the period commencing on the Closing
        Date and for filing any and all state and local tax returns which 
        become due after the Closing Date and for the payment of all 
        taxes in respect thereof.

                2.1.8  Litigation and Claims. There is no action, lawsuit, or 
        proceeding pending or threatened, nor is there any claim or 
        investigation against Seller in any court or before any Federal, 
        State, municipal or other governmental department, commission, board,
        bureau, agency or instrumentality, domestic or foreign, or before 
        any arbitrator that would preclude Seller from consummating the 
        transactions contemplated by this Agreement,


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        preclude Seller from performing all of the obligations assumed by it 
        under this Agreement, or materially adversely affect Seller from 
        performing all of the obligations assumed under this Agreement. 
        Seller is not subject to any consent decree, order, writ, decree, 
        injunction, judgment or other finding or determination of any court 
        or before any Federal, State, municipal or other governmental 
        department, commission, board, bureau, agency or instrumentality, 
        domestic or foreign, in connection with any such proceeding to which 
        Seller is an affected party and which is applicable to Seller's 
        consummation of the transactions contemplated by this Agreement or 
        its performance of this Agreement.

        2.2  Representations and Warranties of Buyer.  Buyer and GNC, jointly 
and severally, represent and warrant to Seller the following as of the date of 
this Agreement and as of the Closing Date:

                2.2.1  Organization and Qualification.  Buyer is a corporation 
        duly organized, validly existing and in good standing under the laws
        of its state of incorporation. Buyer has all requisite corporate power
        and authority to own, lease and operate its assets, properties and 
        business and the Shares and the Business and to carry on its business 
        and the Business as now being conducted. Buyer is duly qualified and 
        is in good standing in each jurisdiction in which the nature or 
        conduct of its business or the character or location of its 
        properties (owned or leased) makes such qualification necessary, except 
        where failure to be so qualified would not have a material adverse 
        effect on its business.

                2.2.2  Authority Relative to This Agreement. Buyer and GNC have 
        full corporate power and authority to enter into and perform this 
        Agreement. The execution and performance by Buyer and GNC of this 
        Agreement have been duly and validly authorized on behalf of Buyer 
        and GNC by their respective Boards of Directors and, if necessary, 
        their respective shareholders.  No other corporate action by Buyer or 
        GNC is necessary to authorize Buyer's and GNC's, as applicable, 
        execution and performance of this Agreement. This Agreement has 
        been duly and validly executed and delivered by Buyer and when 
        executed and delivered by Buyer and GNC, as applicable, will 
        constitute, a valid and binding agreement of Buyer and GNC, as 
        applicable, enforceable against Buyer and GNC, as applicable, in 
        accordance with their terms, except as such enforceability may 
        be limited by bankruptcy, insolvency, reorganization, moratorium, 
        fraudulent conveyance laws or other similar laws relating to 
        creditors' rights and except that the remedy of specific performance 
        and injunctive and other forms of equitable relief are subject to 
        equitable defenses and to the discretion of the court before which 
        any proceedings may be brought.

                2.2.3  Consents and Approvals; No Violation. Except as set 
        forth in the attached Exhibit 2.2.3, neither the execution nor the 
        performance by Buyer of this Agreement to which it is a party, (a) 
        will require any authorization, consent or approval of any 
        governmental or regulatory authority or of any other person or 
        entity, the absence of which would have a material adverse effect 
        on Buyer's business, (b) will conflict with, or breach any provision 
        of, the Articles of Incorporation or bylaws of Buyer, (c) will 
        conflict with, in any material respect, violate or breach, in any 
        material respect, any provision of, or require the consent of any 
        governmental agency or body or any third party, the absence of which 
        would have a material adverse effect on Buyer's business, under, 
        any of the provisions of any material authorization or order of any 
        governmental


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        agency or body or any third party, or any material note, lease, 
        agreement or other instrument or obligation to which Buyer is a party,
        or by which it or any of its properties or assets may be bound, or (d) 
        will violate, in any material respect, any material order, injunction,
        or arbitration award, or any statute, rule, regulation or ruling of 
        any court or governmental authority, United States or foreign, 
        applicable to Buyer or to any of its properties or assets.

                2.2.4  Financial Capacity. Buyer has the financial capacity to 
        consummate the transactions contemplated by this Agreement to which 
        it is a party, including those arising after the Closing Date. Buyer 
        is and shall be on and after the Closing, capitalized with at least 
        $150,000 in cash contributed by Buyer's shareholders as equity.

                2.2.5  Investment Intent and Access to Information. Buyer is 
        acquiring the Shares under this Agreement for its own account, for 
        investment, and not with a present intention of, or a view to, or 
        for, the sale or distribution of all or any portion of the Shares, 
        except pursuant to an effective registration statement under the 
        Securities Act of 1933, as amended (the "Act"), pursuant to Rule 144 
        under the Act, or pursuant to an exemption from registration under 
        the Act. Buyer acknowledges that the Shares will not be registered 
        under the Act or under applicable state securities laws and are 
        "restricted securities" with limits on transferability under the Act 
        and applicable state securities laws. Seller may place a legend on 
        the Shares delivered to Buyer setting forth such restrictions. At 
        all times following its initial contract with Seller pertaining to 
        the Shares, Seller has made available to Buyer the opportunity to 
        ask questions of, and receive answers from, Seller, GNC and persons 
        acting on their behalf concerning the terms and conditions of the 
        transactions contemplated by this Agreement and concerning Seller 
        and GNC, and to obtain any additional information, to the extent 
        Seller or GNC possessed such information or could acquire it without 
        unreasonable effort or expense, that was necessary to verify the 
        information furnished about the foregoing to Buyer by Seller or GNC.

                2.2.6  Accredited Investor. Buyer has such knowledge and 
        experience in financial and business matters and of the Business 
        that it is capable of evaluating the merits and risks of the purchase 
        of the Shares.

                2.2.7  Licenses.  Prior to the Closing, Buyer shall have 
        obtained all licenses, permits, bonds, certifications, registrations, 
        authorizations and approvals (collectively "Approvals") necessary to 
        Buyer's ownership of GNC. Buyer has never been denied, and has no 
        reason to believe that it would be denied, any such Approval.

                2.2.8  Litigation and Claims.  There is no action, lawsuit, or 
        proceeding pending or threatened, nor is there any claim or 
        investigation against Buyer in any court or before any Federal, 
        State, municipal or other governmental department, commission, board, 
        bureau, agency or instrumentality, domestic or foreign, or before 
        any arbitrator that would preclude Buyer from consummating the 
        transactions contemplated by this Agreement, preclude Buyer from 
        performing all of the obligations assumed by it under this Agreement,
        or materially adversely affect Buyer from performing all of the 
        obligations assumed under this Agreement. Buyer is not subject to any
        consent decree, order, writ, decree, injunction, judgment or other 
        finding or determination of any court or before any Federal, State, 
        municipal or other governmental department, commission, board, bureau,


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        agency or instrumentality, domestic or foreign, in connection with any
        such proceeding to which Buyer is an affected party and which is
        applicable to Buyer's consummation of the transactions contemplated by
        this Agreement or its performance of this Agreement. 

                2.2.9  Performance of Obligations.  Buyer has all necessary and
        appropriate power, capacity and authority to, and Buyer shall, cause GNC
        to perform all obligations and responsibilities retained by GNC pursuant
        to this Agreement or otherwise. 

                2.2.10  Access for Audit.  Before the date of this Agreement,
        Seller caused, and Buyer acknowledges that Seller caused, its and GNC's
        officers, directors, employees and agents, to give Buyer and its
        officers, employees, counsel, accountants, agents and other authorized
        representatives full access during normal business hours to all of the
        facilities, assets, properties, books of account, leases, agreements,
        commitments, records and personnel of GNC requested by Buyer, and to
        furnish Buyer or its representatives with all such information
        concerning GNC as Buyer requested so that Buyer had a full opportunity
        to make a full business, financial, accounting and legal audit of the
        business and affairs of GNC.  

                2.2.11  Disclosure of Material Fact.  Buyer has disclosed to
        Seller all material facts with respect to its business. The
        representations and warranties of Buyer contained in this Agreement do
        not contain any untrue statement of material fact or omit to state a
        material fact necessary to make the statements contained herein not
        misleading. 

        2.3  Facts Within GNC's and/or Buyer's Knowledge.  Buyer acknowledges 
that, (a) its principals have been operating GNC over the past several years, 
(b) Buyer and its principals are fully knowledgeable of all aspects of GNC's 
financial condition, operations and business, (c) Buyer and its principals are 
not relying on any representation or warranty by Seller or any of its officers 
except those which are expressly made in this Agreement, and (d) Seller shall 
not be required to indemnify Buyer or otherwise be responsible to Buyer for 
breach of any representation, warranty or covenant, which is contrary to facts 
known or which should have been known to GNC and/or Buyer, or to their 
respective officers, directors, shareholders or principals.

3.      COVENANTS BEFORE CLOSING.

        3.1  Covenants of Seller.

                3.1.1  Approval of Sale of Purchased Assets.  Seller shall cause
        its Board of Directors to approve this Agreement and the sale of the
        Shares and other transactions contemplated by this Agreement and shall
        provide evidence of such approvals to Buyer at the Closing. 

                3.1.2  Consents.  On or before the Closing Date, Seller shall
        obtain all of the consents and approvals required to be set forth in
        Exhibit 2.1.3. Seller shall deliver evidence of such consents to Buyer
        on or before the Closing. 

                3.1.3  Delivery of Books and Records.  Seller shall deliver all
        of GNC's books and records to Buyer at the Closing. Buyer shall allow
        Seller access to such books and 

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        records, during Buyer's normal business hours upon reasonable advance
        notice from Seller to Buyer.

        3.2   Covenants of GNC and Buyer. GNC and Buyer, jointly and severally, 
covenant as follows:

                3.2.1  Confidentiality. Between the date of this Agreement and
        the Closing Date, Buyer will, and will require its agents and employees
        to, hold in confidence, and will not disclose or use to compete with
        Seller or GNC, any confidential or proprietary information of Seller or
        GNC disclosed to Buyer in connection with its investigation of Seller
        and GNC or otherwise, subject to any legal requirement that Buyer
        disclose such information. If for any reason the Closing does not occur
        by the Closing Date, Buyer will promptly surrender to Seller all
        information of Seller or GNC disclosed to Buyer in connection with its
        investigation of GNC or otherwise and all copies of the foregoing and
        Buyer shall continue to be bound by the covenant in the previous
        sentence, it being understood that, until the Closing, if any, all such
        confidential information is the property of Seller and GNC and not of
        Buyer.


                3.2.2  Approval of Sale of Purchased Assets. Buyer shall cause
        its Board of Directors and, if necessary, shareholders to approve this
        Agreement and the purchase of the Shares and the purchase of the Shares
        and other transactions contemplated by this Agreement and shall provide
        evidence of such approvals to Seller at the Closing.
 
                3.2.3  [INTENTIONALLY OMITTED.]

                3.2.4  Consents. On or before the Closing Date, Buyer shall

        obtain all of the consents and approvals required to be set forth in
        Exhibit 2.2.3. Buyer shall deliver evidence of such consents to Seller
        on or before the Closing.

                3.2.5  Further Assurances. Buyer will promptly prepare, execute
        and deliver to Seller such lists, instruments and documents and
        cooperate with Seller in such other respects as Seller may from time to
        time, before or after the Closing, reasonably request.

                3.2.6  Tax Matters. At Seller's option, Buyer shall join with
        Seller in making an Internal Revenue Code Section 338(h)(10) election to
        treat the purchase and sale of the Shares as a purchase and sale of the
        assets of GNC for federal income tax purposes. At the Closing, Buyer
        shall execute an Internal Revenue Service Form 8023 or such other form
        or document as may be necessary to facilitate a Section 338(h)(10)
        election. If Seller exercises its option to make a Section 338(h)(10)
        election, Buyer agrees to take all actions (and to cause GNC to take all
        actions) which are necessary or proper to effect and implement such
        election including, without limitation, (a) filing all federal income
        tax returns in accordance with purchase price allocations prepared by
        Seller in the manner required by the Internal Revenue Code and the
        Treasury regulations thereunder, (b) attaching a copy of the Form 8023
        (and all other information required by the Treasury regulations) to the
        first federal income tax return of or including GNC due after the
        Closing, and (c) providing Seller all information relating to
        post-closing events which directly or indirectly impact the tax
        consequences of the election.


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   13

4.      CONDITIONS TO CLOSING.

        4.1  Conditions to Buyer's Obligations. The obligations of Buyer under 
this Agreement are subject to the satisfaction of the following conditions at 
or prior to the Closing; provided, that Buyer may waive the satisfaction of any 
such condition:

             4.1.1  Accuracy of Seller's Representations and Warranties.
        Subject to the provisions of Section 2.3, the representations and
        warranties made by Seller in Section 2.1 shall be true, accurate and
        correct, in all material respects, at and as of the Closing Date.

             4.1.2  Compliance with Covenants.  The covenants required to be
        performed by Seller before the Closing pursuant to Section 3.1 shall
        have been so performed, in all material respects, on or before the
        Closing Date.

             4.1.3  No Material Casualty.  There shall have been no material
        loss, damage or casualty to GNC's assets between the date of this
        Agreement and the Closing Date.

             4.1.4  No Material Litigation.  No action or proceeding shall have
        been instituted or adversely concluded by any governmental
        instrumentality, agency, or other person before any court or
        governmental agency which has restrained, prevented, or conditioned the
        consummation of the transactions contemplated by this Agreement.

             4.1.5  No Bankruptcy.  None of GNC, Seller or any of their
        affiliates shall be the subject of any bankruptcy or similar proceeding
        on or before the Closing Date.

             4.1.6  Resignations.  Resignations of all current officers and
        directors of GNC shall have been submitted to Buyer on or before the
        Closing Date.

        4.2  Conditions to Seller's Obligations.  The obligations of Seller
under this Agreement are subject to the satisfaction of the following conditions
at or prior to the Closing; provided, that Seller may waive the satisfaction of
any such condition.

             4.2.1  Accuracy of Buyer's Representations and Warranties.  The
        representations and warranties made by Buyer in Section 2.2 shall be
        true, accurate and correct, in all material respects, at and as of the
        Closing Date.

             4.2.2  Compliance with Covenants.  The covenants required to be
        performed by Buyer before the Closing, pursuant to Section 3.2, shall
        have been performed, in all material respects, on or before the Closing
        Date, and Buyer shall have delivered evidence of such compliance to
        Seller on the Closing Date.

             4.2.3  Certificate of Buyer and Officers.  Buyer shall have
        delivered to Seller a Certificate, dated as of the Closing Date, signed
        by Buyer and the chief executive and principal financial officers of
        Buyer, certifying as to the fulfillment of the conditions specified in
        Sections 4.2.1 and 4.2.2 in the form attached as Exhibit 4.2.3.


                                       8
   14
                4.2.4  No Material Casualty.  There shall have been no material 
        loss, damage, or casualty to GNC's assets between the date of this 
        Agreement and the Closing Date.

                4.2.5  No Material Litigation.  No action or proceeding shall 
        have been instituted or adversely concluded by any governmental 
        instrumentality, agency or other person before any court or governmental
        agency which has restrained, prevented or conditioned the consummation
        of the transactions contemplated by this Agreement.

        4.3  Buyer's Remedy for Failure of Condition.  If any condition to 
Buyer's obligations under this Agreement as set forth in Section 4.1 is not met 
on or before the Closing Date, or if the transactions contemplated by this 
Agreement are not consummated on or before the Closing Date for any other 
reason (except for a failure of a condition to Seller's obligations as set 
forth in Section 4.2), Buyer may terminate this Agreement by written notice to 
Seller. This remedy shall be in addition to, and not in lieu of, any other 
right or remedy of Buyer against Seller for breach of, or for failure to close, 
this Agreement, including, without limitation, Buyer's right to specific 
performance, damages or both. Buyer has and will expend substantial time and 
money based on this Agreement, and Buyer's damages for Seller's failure to 
close this Agreement or for Seller's breach of any term, provision, condition 
or covenant of this Agreement would include any costs or expenses incurred by 
Buyer in connection with the preparation of this Agreement. Buyer may not 
recover in excess of $100,000 in damages from Seller if the transactions 
contemplated by this Agreement are not consummated.

        4.4  Seller's Remedy for Failure of Condition.  If any condition to 
Seller's obligations under this Agreement as set forth in Section 4.2 is not 
met on or before the Closing Date, or if the transactions contemplated by this 
Agreement are not consummated on or before the Closing Date for any other 
reason (except for a failure of a condition to Buyer's obligations as set forth 
in Section 4.1), Seller may terminate this Agreement by written notice to 
Buyer. This remedy shall be in addition to, and not in lieu of, any other right 
or remedy of Seller against Buyer for breach of, or for failure to close, this 
Agreement, including, without limitation, Seller's right to specific 
performance, damages or both. Seller has and will expend substantial time and 
money based on this Agreement, and Seller's damages for Buyer's failure to 
close this Agreement or for Buyer's breach of any term, provision, condition or 
covenant of this Agreement would include any costs or expenses incurred by 
Seller in connection with the preparation of this Agreement. Seller may not 
recover in excess of $100,000 in damages from Buyer if the transactions 
contemplated by this Agreement are not consummated.

5.      WARRANTIES; INDEMNIFICATION.

        5.1  Survival.  Subject to Section 5.5, all representations, 
warranties, covenants, indemnifications and agreements of Buyer, GNC and Seller 
contained in this Agreement shall survive the execution and delivery of this 
Agreement and the Closing Date:

        5.2  Indemnity by Seller.  Subject to Section 5.5, Seller shall 
indemnify, defend and hold harmless Buyer, its successors and assigns, and any 
parent, subsidiary or affiliate of Buyer and Buyer's officers, directors, 
shareholders, agents, employees and representatives (collectively, "Buyer's 
Affiliates") from and against all demands, claims, actions or causes of 
action, assessments, losses, damages, liabilities, costs and expenses, 
including, without limitation, interest, penalties, reasonable attorneys' fees 
and costs and expenses incident to proceedings, investigations 



                                       9
   15
or the defense of any claims (collectively, "Losses"), incurred by, 
imposed upon or asserted against Buyer or Buyer's Affiliates, 
arising from, or attributable to, a breach of, or failure to 
perform any of Seller's representations, warranties, covenants or 
agreements contained in this Agreement or in any of the documents 
executed in connection with this Agreement, except as otherwise 
provided in Section 2.3.

        5.3 Indemnity by Buyer. Subject to Section 5.5, Buyer and GNC, jointly 
and severally, shall indemnify, defend and hold harmless Seller, its successors 
and assigns, and any parent, subsidiary or affiliate of Seller and any of 
Seller's officers, directors, shareholders, agents, employees and 
representatives (collectively, "Seller's Affiliates") from and against all 
Losses incurred by, imposed upon or asserted against Seller or Seller's 
Affiliates, arising from, or attributable to, any of the following.

          (a) a breach of, or failure to perform any of Buyer's or GNC's
     representations, warranties, covenants or agreements contained in this
     Agreement or in any of the documents executed in connection with this
     Agreement.

          (b) any failure to cause GNC to discharge or perform any obligations
     or covenants retained by GNC pursuant to this Agreement or otherwise.

          (c) any sales, use, transfer, excise, recording or documentary tax or
     similar tax (other than Seller's income taxes) relating to the sale of the
     Shares by Seller to Buyer or otherwise relating to the consummation of the
     transactions contemplated by this Agreement.

          (d) any products or other liability, obligation or claim relating to
     products manufactured or sold in connection with the Business of GNC or
     Buyer prior to, on or after the Closing.

        5.4 Defense of Claims. If any party ("Indemnified Party") receives 
notice of, or discovers, any claim or the commencement of any action for which 
the other party ("Indemnitor") is or may be liable under this Agreement 
("Indemnified Claim"), the Indemnified Party shall promptly notify the 
Indemnitor of such claim or action in writing and shall provide Indemnitor with 
copies of any pleadings or other documents evidencing such Indemnified Claim. 
The Indemnitor shall be entitled to participate in the defense of any 
Indemnified Claim, and, if it so elects, to assume the defense of the 
Indemnified Claim, with counsel reasonably satisfactory to the Indemnified 
Party. After written notice from the Indemnitor to the Indemnified Party of 
such election to assume the defense, the Indemnitor shall not be liable to the 
Indemnified Party for any legal or other expenses subsequently incurred by 
the Indemnified Party in connection with the defense of the Indemnified Claim, 
other than costs and expenses of the Indemnified Party incurred at the request 
of the Indemnitor. The assumption of the defense of any such Indemnified Claim 
shall not be deemed an admission by the Indemnitor that it is liable for any 
such Indemnified Claim. The Indemnitor may, at its election, settle or 
compromise any Indemnified Claim, but the Indemnified Party shall not settle or 
compromise any Indemnified Claim without the prior consent of the Indemnitor, 
unless the Indemnitor shall have failed or refused to assist the Indemnified 
Party in the defense of such Indemnified Claim or shall unreasonably withhold 
its consent to a proposed settlement or compromise of such claim. The parties 
shall use their best efforts to agree on whether indemnifiable damages exist, 
and if so, the amount. Any amounts 


                                       10
   16
determined to be owed shall be paid within 30 days of such determination. The 
parties agree to reasonably cooperate with each other in the defense of claims 
under this Agreement.

        5.5     Limitation of Liability.

                5.5.1  Seller's Limits. Notwithstanding anything in this
        Agreement to the contrary, Seller shall not be liable to indemnify Buyer
        or any of Buyer's Affiliates, (i) for the first $25,000 in the aggregate
        of Buyer's and Buyer's Affiliates' Indemnified Claims; provided that
        this limitation shall not apply if Buyer's and Buyer's Affiliates'
        aggregate Indemnified Claims exceed $25,000, or (ii) with respect to any
        Indemnified Claim of Buyer or any of Buyer's Affiliates for which
        Seller has not received notice on or before the first annual anniversary
        of the Closing Date, or (iii) with respect to Buyer's and Buyer's
        Affiliates' aggregate Indemnified Claims in excess of $1,242,642 or the
        amount of cash actually received by Seller from Buyer pursuant to this
        Agreement, if less, or (iv) if the Closing occurs, for any incidental,
        consequential or lost profits damages (as opposed to out-of-pocket
        expenses), or (v) for any breach of any representation, warranty,
        covenant or agreement of Seller which is contrary to facts known to
        Buyer and/or Buyer's Affiliates on or before the Closing Date. 

                5.5.2  Buyer's Limits. Notwithstanding anything in this
        Agreement to the contrary, Buyer and GNC shall not be liable to
        indemnify Seller or any of Seller's Affiliates, (i) for the first
        $25,000 in the aggregate of Seller's and Seller's Affiliates'
        Indemnified Claims; provided that this limitation shall not apply if
        Seller's and Seller's Affiliates' aggregate Indemnified Claims exceed
        $25,000, or (ii) with respect to Buyer's and Buyer's Affiliates'
        aggregate Indemnified Claims in excess of $1,242,642 or the amount of
        cash actually paid by Buyer to Seller, if less. 

6.      OTHER COVENANTS AND AGREEMENTS.

        6.1  Sale Restrictions. Buyer shall not pledge, hypothecate, sell or 
otherwise transfer any of the Shares except, (i) pursuant to an effective 
registration statement under the Act and appropriate blue sky laws, or (ii) 
pursuant to exemptions from registration under the Act and appropriate blue 
sky laws.

        6.2  Performance of Obligations. Buyer shall cause GNC to perform all 
of its duties and obligations from and after the Closing Date, including, 
without limitation, all duties or obligations imposed pursuant to its existing 
liabilities and contracts or by any governmental body or agency or pursuant to 
any federal, state or local law, rule, regulation or ordinance, including, but 
not limited to, correction of any existing violations of any federal, state or 
local law, rule, regulation or ordinance, whether or not any of such duties, 
obligations or violations existed before the Closing Date.

        6.3  Brokerages. Except as expressly disclosed by Seller, all 
negotiations relative to this Agreement and the transactions contemplated in 
this Agreement have been carried on by the parties to this Agreement directly 
without the intervention of any person; and such negotiations, and the 
consummation of the transactions under this Agreement, will not result in any 
liability by any party for any finder's fee, brokerage commission or other 
similar fee, which will be paid by Seller. Each party (the "Party") shall 
indemnify the other parties and hold them harmless from 

                                       11
   17
and against any claim for brokerage or finder's fees or other commissions 
resulting from actions of the Party which are not in accordance with the 
preceding sentence.

        6.4     Expenses.   Each party to this Agreement shall pay its own 
expenses in connection with the negotiation, execution and performance of this 
Agreement, the transactions contemplated by this Agreement, and all things 
required to be done by them pursuant to this Agreement, including counsel fees, 
brokerage or financial advisor fees, filing fees and accounting fees, except as 
otherwise expressly provided in this Agreement. All sales, use, excise, 
transfer, recording and documentary taxes and similar taxes applicable to the 
conveyance or transfer of the Shares pursuant to this Agreement shall be paid 
by Buyer.

        6.5     No Disclosures.   The parties acknowledge and agree that the 
negotiations and discussions between the parties with respect to this 
transaction have been confidential. Neither Buyer nor Seller shall make any 
public disclosure or publicity release pertaining to the existence or subject 
matter of this Agreement without the consent of the other parties; provided, 
however, that the parties shall be permitted to make such disclosure to the 
public or to governmental agencies as is reasonably deemed necessary to comply 
with the applicable securities laws or the policies of the American Stock 
Exchange or any other governmental agency as required in the recertification 
process or in the Business. Additionally, Buyer and Seller shall keep 
confidential all facts and information learned before the date of this 
Agreement that pertain in any way to any party to this Agreement.

        6.6     Plant Closing Liability.   Buyer and GNC shall take no action 
after the Closing Date that will create any liability on the part of Seller to 
any of GNC's employees or to any unit of local government under the Workers 
Adjustment and Retraining Notification Act.

        6.7     Books and Records.   For a period of eight (8) years after the 
closing, Buyer shall retain the books of account and other accounting and tax 
records relating to the conduct of the Business before the Closing. Seller 
shall have the right to examine such books and records transferred to Buyer, 
or at its own cost, to make extracts or copies therefrom, within such 
eight-year period during reasonable business hours, and during such other 
time as Buyer and Seller may agree. At least 30 days prior to the end of such 
eight-year period, or any subsequent retention period, Seller shall notify 
Buyer in writing whether either of them desires the further retention of any 
such records for any longer period, and, in the event either of them desires 
any of such records to be retained for any longer period, such records, at the 
option of Buyer, shall be either retained by Buyer or be promptly shipped to 
Seller at Seller's expense.

7.      MISCELLANEOUS.

        7.1     Notices.   Any notice or other communication required or which 
may be given under this Agreement shall be in writing and either delivered 
personally to the addressee, telegraphed, telecopied or telexed to the 
addressee or mailed, certified or registered mail, postage prepaid, and shall 
be deemed given when so delivered personally, telegraphed or telexed, or, if 
mailed, three (3) business days after the date of mailing, as follows:

                                       12
   18
                If to Seller:           Larizza Industries, Inc.
                                        201 W. Big Beaver Road
                                        Suite 1040
                                        Troy, MI 48084
                                        Attention: Ronald T. Larizza
                                        Telecopy Number: (810) 524-4996

                With a Copy to:         Honigman Miller Schwartz and Cohn
                                        2290 First National Building
                                        Detroit, MI 48226
                                        Attention: Patrick T. Duerr, Esq.
                                        Telecopy Number: (313) 962-1076

                If to Buyer:            General Nuclear Acquisition Corp.
                                        Shady Creek Road
                                        P.O. Box 400
                                        New Stanton, PA 15672

                With a Copy to:         Dino S. Persio, Esq.
                                        Smorto Persio Zadzilko Webb & McGill
                                        129 South Center Street
                                        Ebensburg, PA 15931

or to such other address as such party shall designate in writing delivered to 
the other parties to this Agreement.

        7.2  Entire Agreement. This Agreement (including the Exhibits to this 
Agreement) contains the entire agreement among the parties with respect to the 
purchase and sale of the Shares and the other transactions contemplated by this 
Agreement and supersedes all prior agreements, commitments and discussions, 
written or oral, with respect to such transactions, which are merged into this 
Agreement and shall be of no further force or effect.

        7.3  Waivers and Amendments. This Agreement may be amended, modified, 
superseded, cancelled, renewed or extended, and the terms and conditions of 
this Agreement may be waived, only by a written instrument signed by the 
parties, or in the case of a waiver, by the party waiving compliance. No delay 
on the part of any party in exercising any right, power or privilege under this 
Agreement shall operate as a waiver of such right, power or privilege, nor 
shall any waiver on the part of any party of any right, power or privilege 
under this Agreement, nor any single or partial exercise of any right, power or 
privilege under this Agreement, preclude any other or further exercise of such 
right, power or privilege or the exercise of any other right, power or 
privilege under this Agreement.

        7.4  Governing Law and Forum. This Agreement is being executed in the 
State of Michigan and shall be governed by and construed in accordance with the 
laws of the State of Michigan, except that if any provision of this Agreement 
would be illegal, void, invalid or unenforceable under such laws, in connection 
with a suit or proceeding validly instituted in another jurisdiction, then the 
laws of such other jurisdiction shall govern insofar as is necessary to sustain 
the validity or enforceability of the terms of this Agreement. Any action or
proceeding


                                       13

   19
in connection with this Agreement shall only be brought in a court of record of 
the State of Michigan, County of Oakland, Southern Division, or in the United 
States District Court for the Eastern District of Michigan, and Buyer, GNC and 
Seller consent to be subject to the personal jurisdiction of such courts.

        7.5   Variations in Pronouns.  All pronouns and any variations thereof 
refer to the masculine, feminine or neuter, singular or plural, as the identity 
of the person or persons may require.

        7.6   Counterparts.  This Agreement may be executed in two or more 
counterparts, each of which shall be deemed an original, but all of which 
together shall constitute one and the same instrument.

        7.7   Exhibits.  The Exhibits to this Agreement are a part of this 
Agreement as if set forth in full in this Agreement.

        7.8   Headings.  The headings in this Agreement are for reference 
purposes only and shall not in any way affect the meaning or interpretation of 
this Agreement.

        7.9   Binding Effect.  This Agreement shall be binding upon and inure 
to the benefit of the parties to this Agreement and their respective permitted 
successors and assigns; provided that the parties may not assign or transfer 
any of their rights or delegate any of their obligations under this Agreement 
without the prior written consent of the other parties, and any purported 
assignment or transfer by any party that is not in compliance with the 
foregoing is void.

        7.10  Severability.  The provisions of this Agreement shall be deemed 
severable, and if any provision of this Agreement is determined to be illegal 
or invalid under applicable law, such provision may be changed to the extent 
reasonably necessary to make the provision, as so changed, legal, valid and 
binding. If any provision of this Agreement is determined to be illegal or 
invalid in its entirety, such illegality or invalidity shall have no effect on 
the other provisions of this Agreement, which shall remain valid, operative 
and enforceable.

        7.11  Survival of Provisions.  The provisions and the rights and 
obligations of the parties set forth in Sections 5 and 6 shall survive the 
Closing and shall be binding upon and fully enforceable against the parties and 
their respective successors and assigns as applicable at all times on or after 
the Closing, in accordance with their terms, except as otherwise expressly 
provided by this Agreement.

        7.12  Acknowledgement.  THE PARTIES TO THIS AGREEMENT ACKNOWLEDGE AND 
AGREE THAT THEY ARE SOPHISTICATED BUSINESS PEOPLE, THAT THEY HAVE SUFFICIENT 
KNOWLEDGE AND EXPERTISE IN BUSINESS AND FINANCIAL MATTERS TO EVALUATE THE 
MERITS AND RISKS ASSOCIATED WITH THE EXECUTION AND PERFORMANCE OF THIS 
AGREEMENT, INCLUDING THE EXHIBITS AND ALL RELATED DOCUMENTS AND AGREEMENTS (THE 
"RELATED AGREEMENTS"), THAT THEY HAVE FULLY READ AND FULLY UNDERSTAND ALL OF 
THE TERMS AND PROVISIONS OF THIS AGREEMENT, THE ATTACHED EXHIBITS AND THE 
RELATED AGREEMENTS, THAT THEY HAVE BEEN REPRESENTED BY COMPETENT LEGAL COUNSEL 
OF THEIR OWN CHOOSING AND THAT THEY


                                       14
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EXECUTE THIS AGREEMENT, THE EXHIBITS AND ALL RELATED AGREEMENTS, FREELY, 
WITHOUT DURESS OR COERCION AND WITH FULL KNOWLEDGE OF THE SIGNIFICANCE AND 
CONSEQUENCES.

        IN WITNESS WHEREOF, the parties have executed this Agreement as of the 
date first above written.

LARIZZA INDUSTRIES, INC.
                                            Subscribed to and sworn to me
By: /s/ TERENCE C. SEIKEL                   this 1st day of June, 1995, at
   ---------------------------------        Oakland County, Michigan.
Its: CFO
    --------------------------------

                        "Seller"            /s/ JANICE K. HAGEN
                                            ---------------------------------
                                            My commission expires 4-8-96.

GENERAL NUCLEAR ACQUISITION CORP.           GENERAL NUCLEAR CORP.

By: /s/ RICKY LANG                          By: /s/ RICKY LANG
   ---------------------------------           ------------------------------
Its:  President                             Its:  President
    --------------------------------            -----------------------------

                        "Buyer"                                    "GNC"

Subscribed to and sworn to me               Subscribed to and sworn to me
this 1st day of June, 1995, at              this 1st day of June, 1995, at
Oakland County, Michigan.                   Oakland County, Michigan.


/s/ JANICE K. HAGEN                         /s/ JANICE K. HAGEN
------------------------------------        ---------------------------------
My commission expires 4-8-96.               My commission expires 4-8-96.


 
          JANICE K. HAGEN
 NOTARY PUBLIC-OAKLAND COUNTY, MICH.
   MY COMMISSION EXPIRES 04-08-96


                                       15
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                             EXHIBITS TO AGREEMENT




PAGE      SECTION
----      -------
                 
2, 6      2.1.3         Consents and Approvals--Seller
3         2.1.4         Capitalization
3         2.1.7         Tax Liabilities
4, 7      2.2.3         Consents and Approvals--Buyer
8         4.2.3         Certificate of Buyer and Officers