PROLER INTERNATIONAL CORP
8-K, 1996-09-16
STEEL WORKS, BLAST FURNACES & ROLLING MILLS (COKE OVENS)
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                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549


                                   FORM 8-K


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

               Date of Report (Date of earliest event reported)
                              September 15, 1996


                          PROLER INTERNATIONAL CORP.
                         (Exact name of registrant as
                           specified in its charter)


   Delaware                         1-5276                        74-0494529
(State or other                   (Commission                    (IRS Employer
jurisdiction of                  File Number)                  Identification
incorporation)                                                      Number)


                          4265 San Felipe, Suite 900
                             Houston, Texas  77027
                   (Address of principal executive offices)


       Registrant's telephone number, including area code (713) 627-3737

                                      -1-

ITEM 5.  OTHER EVENTS

      On September 15, 1996, Proler International Corp. (the "Registrant")
entered into an Agreement and Plan of Merger, dated as of September 15, 1996, by
and among Schnitzer Steel Industries Inc. ("Schnitzer"), PIC Acquisition
Corporation ("Sub") and the Registrant (the "Merger Agreement"). Pursuant to the
Merger Agreement: (i) Sub will commence within five business days after the date
of the Merger Agreement a cash tender offer (the "Offer") for all issued and
outstanding shares of common stock, $1.00 par value per share, of the Registrant
(the "Common Stock") at a price of $7.50 per share, net to the seller in cash;
and (ii) following consummation of the Offer, (x) Sub will be merged with and
into the Registrant (the "Merger"), with the Registrant surviving as a wholly
owned subsidiary of Schnitzer, and (y) each issued and outstanding share of
Common Stock will be converted into the right to receive $7.50 per share in cash
(or such higher price as may be paid in the Offer). The Offer is subject to,
among other things, the condition that there shall have been tendered and not
withdrawn prior to the expiration date of the Offer a number of shares of Common
Stock which, when added to the number of shares of Common Stock already owned by
Schnitzer and Sub, constitutes a majority of the then-outstanding shares of
Common Stock (determined on a fully diluted basis) (the "Minimum Condition").
The Offer and Merger are subject to, among other things, regulatory approval,
and the Merger is subject to approval by the Registrant's stockholders. Approval
of the Merger by the Registrant's stockholders will be assured if the Minimum
Condition is satisfied.

ITEM 7.  EXHIBITS

      Exhibit 2.        Agreement and Plan of Merger dated September 15, 1996

      Exhibit 4.        Amendment dated September 15, 1996 to Rights Agreement 
                        dated as of February 28, 1996

      Exhibit 99.       Joint News Release dated September 16, 1996.

                                  SIGNATURES

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

                                          PROLER INTERNATIONAL CORP.



Dated:  September 16, 1996                By:   /s/ Bruce W. Wilkinson
                                          Name:  Bruce W. Wilkinson
                                Title: President

                                      -2-

                          PROLER INTERNATIONAL CORP.

                                 EXHIBIT INDEX

                                      to

                            FORM 8-K CURRENT REPORT

                      Date of Report:  September 15, 1996


                Exhibit
                Number                                 Description

                   2                     Agreement and Plan of Merger dated
                                         September 15, 1996

                   4                     Amendment dated September 15, 1996 to
                                         Rights Agreement dated February 28,
                                         1996 (included as Annex B to the
                                         Agreement and Plan of Merger filed as
                                         Exhibit Number 2 hereto)

                  99                     Joint News Release dated September 16,
                                         1996

                                      -3-


                                                                       EXHIBIT 2
                         AGREEMENT AND PLAN OF MERGER

                                     AMONG

                      SCHNITZER STEEL INDUSTRIES, INC.,

                          PROLER INTERNATIONAL CORP.,

                                      AND

                          PIC ACQUISITION CORPORATION
<PAGE>
                         AGREEMENT AND PLAN OF MERGER

      THIS AGREEMENT AND PLAN OF MERGER made as of September 15, 1996 (the
"Agreement") is among Schnitzer Steel Industries, Inc., an Oregon corporation
("Schnitzer"), Proler International Corp., a Delaware corporation ("Proler"),
and PIC Acquisition Corporation, a Delaware corporation ("Sub").

                                   RECITALS

      A. Sub is a direct, wholly-owned subsidiary of Schnitzer, formed solely
for the purposes of the transactions contemplated by this Agreement.

      B. The Boards of Directors of Schnitzer, Sub, and Proler have determined
that it is advisable and in the best interests of their respective stockholders
to enter into a business combination as described in this Agreement.

      C. In furtherance of such combination it is proposed that (i) Sub conduct
a cash tender offer pursuant to the terms and conditions of this Agreement for
all of the outstanding shares of Common Stock, $1.00 par value per share, of
Proler (each, a "Share," and collectively, the "Shares") and the associated
Stock Rights (the "Rights") issued pursuant to the Rights Agreement dated as of
February 28, 1996 between Proler and KeyCorp Shareholder Services, Inc. (the
"Rights Agreement") (such cash tender offer, as described in more detail in
Article 1 below, the "Offer"), and (ii) that upon consummation of the Offer, Sub
merge with and into Proler pursuant to the applicable provisions of the Delaware
General Corporation Law (the "DGCL") and the terms and conditions of this
Agreement (such merger, as described in more detail in Article below, the
"Merger").

                                   AGREEMENT

      NOW, THEREFORE, in consideration of the mutual representations,
warranties, covenants, agreements and conditions contained in this Agreement,
the parties agree as follows:


                                   ARTICLE 1

                                   THE OFFER

      1.1   THE OFFER.

                  (a) Provided that this Agreement has not been terminated in
      accordance with Article of this Agreement and subject to the conditions
      and events set forth in ANNEX A to this Agreement (the "Offer
      Conditions"), as promptly as practicable but in no event later than five
      (5) business days after the execution date of this Agreement, Sub will
      commence (within the meaning of Rule 14d-2(a) under the Securities
      Exchange Act

<PAGE>

      of 1934, as amended (the "Exchange Act")) a cash tender offer to purchase
      all of the Shares (and the associated Rights) for $7.50 per Share (and
      associated Right), net to the seller in cash (less any required
      withholding of taxes) (as such may be increased by Sub from time to time,
      the "Offer Price"). The terms of the Offer will provide that, subject to
      Sub's right to extend the Offer pursuant to Section (b) below, the Offer
      will expire on the date that is twenty (20) business days from the date
      the Offer is commenced (such date, or the date through which the Offer may
      be extended pursuant to Section (b) below, the "Expiration Date").

                  (b) Sub may in its sole discretion increase the Offer Price,
      but Sub may not without the prior written consent of Proler, (i) decrease
      the Offer Price, (ii) change the form of consideration payable in the
      Offer, (iii) decrease the number of Shares sought pursuant to the Offer,
      (iv) add to or modify the Offer Conditions or (v) otherwise amend the
      Offer in any manner adverse to Proler's stockholders. Notwithstanding the
      foregoing, Sub may, without Proler's consent (x) extend the Offer for an
      aggregate total of not more than twenty-five (25) business days from the
      original Expiration Date contemplated by Section (a), if at such original
      Expiration Date any of the Offer Conditions have not been satisfied or
      waived; (y) extend the Offer for any period required by any rule,
      regulation, interpretation or position of the Securities and Exchange
      Commission (the "SEC"); or (z) extend the Offer for no more than five (5)
      business days beyond the original Expiration Date contemplated by Section
      (a) in the event that the Offer Conditions have been satisfied but less
      than ninety percent (90%) of the Shares have been tendered pursuant to the
      Offer.

                  (c) On the date the Offer is commenced, Sub will file with the
      SEC a Tender Offer Statement on Schedule 14D-1 (together with all
      amendments and supplements thereto, the "Schedule 14D-1") with respect to
      the Offer. The Schedule 14D-1 will contain as an exhibit or incorporate by
      reference the Offer to Purchase (or portions thereof) and form of the
      related letter of transmittal and summary advertisement to be used in
      connection with the Offer (the Schedule 14D-1 and such other documents,
      together with any supplements thereto or amendments thereof, being
      referred to herein collectively as the "Offer Documents"). Proler will
      provide to Sub in writing all information regarding Proler necessary for
      the preparation of the Offer Documents, and Proler and its counsel will be
      given a reasonable opportunity to review and comment on the Offer
      Documents before they are filed with the SEC and distributed to Proler's
      stockholders. Sub will provide to Proler and its counsel any comments that
      Sub receives (directly or through its counsel) from the SEC or its staff
      with respect to the Offer Documents promptly after receiving such
      comments. Sub and Proler will each promptly correct any information
      provided by it for use in the Offer Documents if and to the extent that it
      has become false or misleading in any material respect, and Sub will
      promptly amend and supplement the Offer Documents if and to the extent
      that they have become false or misleading in any material respect and will
      promptly cause the Offer Documents as so amended and supplemented to be
      filed with the SEC and to be
                                        2

      disseminated to Proler's stockholders, in each case as and to the extent
      required by applicable federal securities laws.

                  (d) Subject only to the Offer Conditions, in accordance with
      the terms of the Offer, Sub will, and Schnitzer will cause Sub to, accept
      for payment all Shares validly tendered and not withdrawn (the "Tendered
      Shares") as soon as legally permissible after commencement of the Offer,
      and pay for all Tendered Shares as promptly as practicable thereafter.
      Schnitzer will provide or cause to be provided to Sub on a timely basis
      the funds necessary to accept for payment, and pay for, any Shares that
      Sub becomes obligated to accept for payment, and pay for, pursuant to the
      Offer.

      1.2   ACTIONS BY PROLER.

                  (a) Proler hereby consents to the Offer and represents and
      warrants that its Board of Directors (the "Proler Board"), at a meeting
      duly called and held on September 15, 1996 unanimously has (i) determined
      that this Agreement and the transactions contemplated hereby, including
      the Offer, are fair to and in the best interests of Proler's stockholders,
      (ii) approved this Agreement and the transactions contemplated hereby,
      including the Offer, and (iii) resolved to recommend that the stockholders
      of Proler accept the Offer, tender their Shares to Sub and, if required by
      applicable law, approve the transactions contemplated hereby. Proler has
      been advised by each of its directors that each such person intends to
      tender all Shares, if any, that he or she owns pursuant to the Offer.
      Proler further represents and warrants that J.C. Bradford & Co. has
      delivered to the Proler Board its written opinion dated September 15, 1996
      to the effect that, as of the date of such opinion, the amount of the
      Offer Price and the Merger Consideration (as defined in Section below) are
      fair to Proler's stockholders from a financial point of view. J.C.
      Bradford & Co. has agreed to permit the inclusion of its fairness opinion
      in the Offer Documents and the Schedule 14D-9 referred to below and the
      Proxy Statement referred to in Section (b), and Proler consents to the
      inclusion in the Offer Documents of the recommendations of the Proler
      Board described in this Section .

                  (b) As soon as practicable following Sub's filing of the
      Schedule 14D-1, Proler will file with the SEC a
      Solicitation/Recommendation Statement on Schedule 14D-9 pertaining to the
      Offer (together with any amendments or supplements thereto, the "Schedule
      14D-9") containing the Proler Board's recommendation described in Section
      (a) and will promptly disseminate the Schedule 14D-9 to Proler's
      stockholders. Sub and its counsel will be given a reasonable opportunity
      to review and comment on the Schedule 14D-9 before it is filed with the
      SEC and disseminated to Proler's stockholders. Proler will provide to Sub
      and its counsel any comments that Proler receives (directly or through its
      counsel) from the SEC or its staff with respect to the Schedule 14D-9
      promptly after receiving such comments.

                                      3

                  (c) Proler will promptly furnish Sub with mailing labels,
      security position listings and any available listing or computer files
      containing the names and addresses of the record holders of the Shares as
      of a recent date and furnish Sub with such additional information and
      assistance (including, without limitation, updated lists of stockholders,
      mailing labels and lists of securities positions) as Sub or its agents may
      reasonably request for the purpose of communicating the Offer to the
      record and beneficial holders of Shares. Subject to the requirements of
      applicable law, and except for such steps as are necessary to disseminate
      the Offer Documents and any other documents necessary to consummate the
      Merger, Schnitzer and Sub and their agents will hold in confidence the
      information contained in any such labels, listings, and files, will use
      such information only in connection with the Offer and the Merger, and if
      this Agreement is terminated, will upon Proler's request deliver and will
      use their best efforts to cause their agents to deliver to Proler all
      copies of and any extracts or summaries from such information then in
      their possession and control.

      1.3   DESIGNATION OF DIRECTORS OF PROLER FOLLOWING COMPLETION OF OFFER.

                  (a) Promptly upon Sub's consummation of the Offer, Sub will be
      entitled, subject to compliance with Section 14(f) of the Exchange Act, to
      designate that number (rounded up to the next greatest whole number) of
      directors on the Proler Board that is equal to the product of the total
      number of directors on the Proler Board multiplied by the percentage that
      the aggregate number of Shares beneficially owned by Sub or any affiliate
      of Sub (including for purposes of this Section such Shares as are accepted
      for payment pursuant to the Offer but excluding Shares held by any Proler
      Entity (as that term is defined in the introduction to Article 3 below))
      bears to the number of Shares outstanding. Proler will cause (i) each
      committee of the Proler Board, (ii) the board of directors of each
      subsidiary of Proler, and (iii) each committee of such board to include
      persons designated by Sub constituting the same percentage of each such
      committee or board as Sub's designees are of the Proler Board. Proler
      will, upon request by Sub, promptly increase the size of the Proler Board
      or exercise its best efforts to secure the resignations of such number of
      directors as is necessary to enable Sub designees to be elected to the
      Proler Board and to cause Sub's designees to be so elected. Nothing in
      this Section will require Proler to elect any person a director if such
      election would violate applicable law. After the time that Sub's designees
      constitute a majority of the Proler Board, any action on the part of
      Proler with respect to this Agreement or any of the transactions
      contemplated hereby will require the vote of a majority of the directors
      who are not designees of Sub.

                  (b) Subject to applicable law, Proler will promptly take all
      action necessary pursuant to Section 14(f) of the Exchange Act and Rule
      14f-1 promulgated thereunder in order to fulfill its obligations under
      this Section and will include in the Schedule 14D-9 disseminated to
      stockholders promptly after the commencement of the Offer (or an amendment
      thereof or an information statement pursuant to Rule 14f-1 if Sub has not
      theretofore designated directors) such information with respect to Proler
      and
                                        4

      its officers and directors as is required under Section 14(f) and Rule
      14f-1 in order to fulfill its obligations under this Section . Schnitzer
      and Sub will supply to Proler and be solely responsible for any
      information with respect to itself and its nominees, officers, directors
      and affiliates required by Section 14(f) and Rule 14f-1.

                                   ARTICLE 2

                                  THE MERGER

      2.1 THE MERGER. Pursuant to the DGCL, and subject to and in accordance
with the terms and conditions of this Agreement, Sub will be merged with and
into Proler as soon as practicable following the satisfaction or waiver of the
conditions set forth in Article of this Agreement.

      2.2   STOCKHOLDERS' MEETING; PROXY STATEMENT.

                  (a) If required by applicable law in order to consummate the
      Merger, Proler will, in accordance with Delaware law and Proler's
      Certificate of Incorporation and Bylaws, call and hold a special meeting
      of its stockholders (the "Stockholders' Meeting") as soon as practicable
      following the date on which the Offer is consummated for the purpose of
      approving the Merger. Subject to Section , the Proler Board will recommend
      to its stockholders that the Merger be approved, and Proler will use its
      reasonable best efforts to solicit from its stockholders proxies in favor
      of the approval of the Merger ("Stockholder Approval"), and will take all
      other action necessary or advisable to secure the vote or consent of
      stockholders required by Delaware law to obtain such consents.

                  (b) Proler will, as soon as practicable following the
      consummation of the Offer, prepare and file a preliminary Proxy Statement
      to solicit Stockholder Approval (the "Proxy Statement") with the SEC and
      will use its best efforts to respond to any comments of the SEC or its
      staff and to cause the Proxy Statement, as finalized, to be mailed to
      Proler's stockholders as promptly as practicable after responding to all
      such comments to the satisfaction of the staff. Sub and Schnitzer will
      provide to Proler in writing all information regarding Sub and Schnitzer
      necessary for the preparation of the Proxy Statement. Proler will notify
      Schnitzer promptly of the receipt of any comments from the SEC or its
      staff and of any request by the SEC or its staff for amendments or
      supplements to the Proxy Statement or for additional information and will
      supply Schnitzer with copies of all correspondence between Proler or any
      of its representatives, on the one hand, and the SEC or its staff, on the
      other hand, with respect to the Proxy Statement or the Merger. If at any
      time before the Stockholders' Meeting there occurs any event that should
      be set forth in an amendment or supplement to the Proxy Statement, Proler
      will promptly prepare and mail to its stockholders such an amendment or
      supplement. Proler will not mail any Proxy Statement, or any amendment or
      supplement thereto, to which Schnitzer reasonably objects. The Proxy
      Statement will
                                        5

      include the Proler Board's recommendation that Proler's stockholders grant
      proxies to approve the Merger; provided, however, that such recommendation
      may be withdrawn, modified, or amended if and to the extent the Proler
      Board determines, in good faith after consultation with outside legal
      counsel, that a failure to do so would be contrary to its fiduciary
      obligations.

      2.3 MERGER WITHOUT STOCKHOLDERS' MEETING. Notwithstanding any other
provision in this Agreement, if Schnitzer, Sub, or any affiliate of either of
them beneficially owns at least 90% of the outstanding Shares, the parties agree
to take all necessary and appropriate action to cause the Merger to become
effective as soon as practicable after the Expiration Date, but in no event
later than ten business days thereafter, without a meeting of stockholders of
Proler in accordance with Section 253 of the Delaware General Corporation Law.

      2.4 EFFECTIVE TIME. As soon as practicable after satisfaction or waiver of
all of the conditions to the Merger set forth in Article of this Agreement, a
Certificate of Merger or Certificate of Ownership and Merger, as the case may
be, prepared in accordance with the applicable provisions of the DGCL (the
"Certificate of Merger") will be executed and filed with the Secretary of State
of the State of Delaware. The Merger will be effective on the date and at the
time (the "Effective Time") when the Certificate of Merger or Certificate of
Ownership and Merger, as the case may be, has been accepted for filing by the
Secretary of State of the State of Delaware.

      2.5 EFFECT OF MERGER. At the Effective Time, Sub will be merged with and
into Proler in the manner and with the effect provided by the DGCL, the separate
corporate existence of Sub will cease and thereupon Sub and Proler will be a
single corporation (the "Surviving Corporation") and will continue to be
governed by the laws of the State of Delaware.

      2.6 CERTIFICATE OF INCORPORATION, ETC. In addition to the effects
identified in Section :

            2.6.1 CERTIFICATE OF INCORPORATION AND BYLAWS. The Certificate of
Incorporation and Bylaws of Proler as in effect at the Effective Time will be
the Certificate of Incorporation and Bylaws of the Surviving Corporation, until
each has been duly amended (subject to Section ) in accordance with the terms
thereof and of the DGCL;

            2.6.2 DIRECTORS. The directors of Sub at the Effective Time will be
the directors of the Surviving Corporation, until their respective successors
have been duly elected or appointed and qualified or until their earlier death,
resignation, or removal in accordance with the Surviving Corporation's
Certificate of Incorporation and Bylaws; and

            2.6.3 OFFICERS. The officers of Sub at the Effective Time will be
the officers of the Surviving Corporation and will hold office from the
Effective Time in accordance with the Bylaws of the Surviving Corporation.

                                        6

      2.7 EFFECT OF MERGER ON CAPITAL STOCK OF CONSTITUENT CORPORATIONS;
EXCHANGE OF CERTIFICATES. The manner and basis of canceling or converting shares
of Proler or Sub will be as follows:

            2.7.1 EFFECT ON CAPITAL STOCK. As of the Effective Time, by virtue
of the Merger and without any action on the part of the holder of any of the
Shares or any shares of capital stock of Sub:

                  2.7.1.1 CAPITAL STOCK OF SUB. Each issued and outstanding
share of capital stock of Sub will be converted into and become one fully paid
and nonassessable share of Proler Common Stock.

                  2.7.1.2 CANCELLATION OF TREASURY STOCK AND SCHNITZER OWNED
STOCK. Each Share (and associated Right) that is owned by Proler or by any
subsidiary of Proler and each Share (and associated Right) that is owned by
Schnitzer, Sub, or any other subsidiary of Schnitzer will automatically be
canceled and retired and will cease to exist, and no consideration will be
delivered in exchange therefor.

                  2.7.1.3 CONVERSION OF PROLER SHARES. Subject to Section , each
Share (and associated Right) issued and outstanding (other than shares to be
canceled in accordance with Section ) will be converted into the right to
receive from the Surviving Corporation in cash, without interest, the Offer
Price (such amount referred to in connection with the Merger as the "Merger
Consideration"). As of the Effective Time, all such Shares (and associated
Rights) will no longer be outstanding and will automatically be canceled and
retired and will cease to exist, and each holder of a certificate representing
any such Shares (and Rights) will cease to have any rights with respect thereto,
except the right to receive the Merger Consideration, without interest.

                  2.7.1.4 SHARES OF DISSENTING STOCKHOLDERS. Notwithstanding
anything in this Agreement to the contrary, any issued and outstanding Shares
(and associated Rights) held by any stockholder (a "Dissenting Stockholder") who
has not voted such Shares in favor of or consented to the Merger and who
complies with all the provisions of Section 262 of the DGCL concerning the right
of holders of Shares to dissent from the Merger and require appraisal of their
Shares ("Dissenting Shares") will not be converted as described in Section but
will become the right to receive such consideration as may be determined to be
due to such Dissenting Stockholder pursuant to the laws of the State of
Delaware. If, after the Effective Time, such Dissenting Stockholder withdraws
his or her demand for appraisal or fails to perfect or otherwise loses his or
her right of appraisal, in any case pursuant to DGCL, his or her Shares will be
deemed to be converted as of the Effective Time into the right to receive the
Merger Consideration. Proler will give Schnitzer (i) prompt notice of any
demands for appraisal of Shares received by Proler and (ii) the opportunity to
participate in and direct all negotiations and proceedings with respect to any
such demands. Proler will not, without the prior written consent of Schnitzer,
make any payment with respect to, or settle, offer to settle, or otherwise
negotiate, any such demands.
                                      7

                  2.7.1.5 WITHHOLDING TAX. The right of any stockholder to
receive the Merger Consideration will be subject to and reduced by the amount of
any required tax withholding obligation.

            2.7.2 EXCHANGE OF CERTIFICATES.

                  2.7.2.1 PAYING AGENT. Before the Effective Time, Schnitzer and
Proler will designate a mutually acceptable bank or trust company to act as
paying agent in the Merger (the "Paying Agent"), and, from time to time on,
before or after the Effective Time, Schnitzer will make available, or cause the
Surviving Corporation to make available, to the Paying Agent funds in amounts
and at the times necessary for the payment of the Merger Consideration upon
surrender of certificates representing Shares as part of the Merger pursuant to
Section , it being understood that any and all interest earned on funds made
available to the Paying Agent pursuant to this Agreement will be turned over to
Schnitzer.

                  2.7.2.2 EXCHANGE PROCEDURE. As soon as reasonably practicable
after the Effective Time, the Paying Agent will mail to each holder of record of
a certificate or certificates that immediately before the Effective Time
represented Shares (the "Certificates"), (i) a notice (advising the holders that
the Merger has become effective) and a letter of transmittal in customary and
appropriate form (which will specify that delivery will be effected, and risk of
loss and title to the Certificates will pass, only upon proper delivery of the
Certificates to the Paying Agent) and (ii) instructions for use in effecting the
surrender of the Certificates in exchange for the Merger Consideration. Upon
surrender of a Certificate for cancellation to the Paying Agent or to such other
agent or agents as may be appointed by Schnitzer, together with such letter of
transmittal, properly completed and duly executed, and such other customary
documents as may reasonably be required by the Paying Agent, the holder of such
Certificate will be entitled to receive in exchange therefor the amount of cash
into which the Shares theretofore represented by such Certificate have been
converted pursuant to Section , and the Certificate so surrendered will be
canceled. In the event of a transfer of ownership of Shares that is not
registered in the transfer records of Proler, payment may be made to a Person
(as defined in Section below) other than the Person in whose name the
Certificate so surrendered is registered, if such Certificate is properly
endorsed or otherwise is in proper form for transfer and the Person requesting
such payment pays any transfer or other taxes required by reason of the payment
to a Person other than the registered holder of such Certificate or establishes
to the satisfaction of the Surviving Corporation that such tax has been paid or
is not applicable. Until surrendered as contemplated by this Section , each
Certificate will be deemed at any time after the Effective Time to represent
only the right to receive upon such surrender the amount of cash, without
interest, into which the Shares theretofore represented by such Certificate will
have been converted pursuant to Section . No interest will be paid or will
accrue on the cash payable upon the surrender of any Certificate.

                  2.7.2.3 NO FURTHER OWNERSHIP RIGHTS IN PROLER COMMON STOCK.
All cash paid upon the surrender of Certificates in accordance with the terms of
Section will be deemed to have been paid in full satisfaction of all rights
pertaining to the Shares theretofore

                                        8

represented by such Certificates. At the Effective Time, the stock transfer
books of Proler will be closed, and there will be no further registration of
transfers on the stock transfer books of the Surviving Corporation of the Shares
that were outstanding immediately before the Effective Time. If, after the
Effective Time, Certificates are presented to the Surviving Corporation or the
Paying Agent for any reason, they will be canceled and exchanged as provided in
Section .

                  2.7.2.4 NO LIABILITY. None of Schnitzer, Sub, Proler, or the
Paying Agent will be liable to any Person in respect of any cash delivered to a
public official pursuant to any applicable abandoned property, escheat, or
similar law. As used in this Agreement, the term "Person" means any individual,
corporation, general partnership, limited partnership, limited liability
company, joint venture, trust, cooperative or other association, Governmental
Entity (as defined in Section (b) below), or any other organization.

                  2.7.2.5 LOST, STOLEN, OR DESTROYED CERTIFICATES. In the event
that any Certificate will have been lost, stolen, or destroyed, upon the making
of an affidavit of that fact by the Person claiming such Certificate to be lost,
stolen, or destroyed, Proler will issue in exchange for such lost, stolen, or
destroyed Certificate the Merger Consideration deliverable in respect thereof as
determined in accordance with this Agreement; PROVIDED, HOWEVER, that Proler
may, in its sole discretion and as a condition precedent to the issuance
thereof, require the owner of such lost, stolen, or destroyed Certificate to
give Proler a bond in such sum as it may reasonably direct as indemnity against
any claim that may be made against Proler with respect to the certificate
alleged to have been lost, stolen, or destroyed.

      2.8 CONVERSION OF PROLER STOCK OPTIONS; RESTRICTED STOCK. Before the
Effective Time, Proler will use its best efforts to obtain the cancellation of
all stock options, vested and unvested, outstanding under Proler's 1988 Stock
Option Plan as amended (the "1988 Plan") with an exercise price less than the
amount of the Merger Consideration in exchange for a payment to the optionee of
an amount per option share equal to the difference between the exercise price
for such share and the amount of the Merger Consideration. In accordance with
the 1988 Plan and Proler's 1994 Non-Employee Director Stock Option Plan (the
"1994 Plan"), a holder of any options outstanding as of the Effective Time will
be entitled to receive, upon exercise of such options in accordance with the
1988 Plan or the 1994 Plan, as the case may be, an amount equal to the Merger
Consideration such holder would have been entitled to receive in the Merger if
he had been the holder of the shares of Common Stock that he would otherwise
have received upon exercise of the options, and will have no right to receive
any stock of Proler upon such exercise. Before the Effective Time, Proler will
use its best efforts to obtain the cancellation of all unvested rights to
receive in the future shares of Common Stock pursuant to Proler's 1993 Incentive
Compensation Plan in exchange for payment to the holders of such rights of an
amount per share equal to the amount of the Merger Consideration.

      2.9 CLOSING. Unless this Agreement has been terminated and the
transactions contemplated by it have been abandoned pursuant to Article , the
closing of the Merger (the "Closing") will take place at the offices of Stoel
Rives LLP, 900 SW Fifth Avenue, Suite 2300,

                                        9

Portland, Oregon 97204, at 10:00 a.m. on the date when the last of the
conditions set forth in Article hereof (other than conditions that by their
terms are to occur at Closing) will have been fulfilled or waived or on such
other date as Schnitzer and Proler may agree (the "Closing Date").

                                   ARTICLE 3

                        REPRESENTATIONS AND WARRANTIES

      In this Agreement, any reference to any event, change, effect or agreement
being "material" with respect to any entity or group of entities means any
material event, change, effect or agreement related to the condition (financial
or otherwise), properties, assets, liabilities, businesses, operations or
results of operations of such entity or group of entities taken as a whole. The
term "Material Adverse Effect" used in connection with a party or any of such
party's subsidiaries or joint ventures means any event, change or effect that is
materially adverse to the condition (financial or otherwise), properties,
assets, liabilities, businesses, operations or results of operations of such
party, its subsidiaries and joint ventures taken as a whole, provided that a
Material Adverse Effect will not include any adverse effect resulting from
general economic conditions. As used in this Agreement, the term "Proler Entity"
(and collectively, the "Proler Entities") means (i) Proler, (ii) Hugo Neu Proler
Company together with each of its subsidiaries and any other entity used in
connection with its business in which Proler or any Proler subsidiary has an
interest, (iii) Prolerized New England Company, together with Proleride
Transport Systems, Inc. and any other entity used in connection with the
business of Prolerized New England Company in which Proler or any Proler
subsidiary has an interest, (iv) Prolerized- Schiabo Neu Company together with
each of its subsidiaries and any other entity used in connection with its
business in which Proler or a Proler subsidiary has an interest, (v) Proler's
wholly-owned direct or indirect subsidiaries and (vi) any other entity in which
Proler or any subsidiary has an ownership interest through a joint venture or
other enterprise. The entities described in clauses (ii), (iii) and (iv) of the
preceding sentence are hereinafter referred to as the "Joint Ventures." For
purposes of this Agreement, "to the knowledge of Proler" or words of similar
import mean actual knowledge of any executive officer of Proler.

      3.1 PROLER'S REPRESENTATIONS AND WARRANTIES. Proler represents and 
warrants to Schnitzer and Sub as follows:

            3.1.1 CORPORATE EXISTENCE AND AUTHORITY. Proler is a corporation
duly organized, validly existing, and in good standing under the laws of the
State of Delaware. Proler has the full corporate power and authority to enter
into this Agreement and carry out its terms. Except for the approval of its
stockholders, if required, Proler has taken all corporate action necessary to
authorize the execution, delivery, and performance of this Agreement. This
Agreement has been duly and validly executed and delivered by Proler and is
binding upon and enforceable against Proler in accordance with its terms, except
as enforceability may be limited or affected by applicable bankruptcy,
insolvency, reorganization, or other laws of general application relating to or
affecting the rights of creditors and except as enforceability may be

                                      10

limited by principles of equity governing specific performance, injunctive
relief, or other equitable remedies.

            3.1.2 NO ADVERSE CONSEQUENCES. Except as set forth on SCHEDULE
3.1.2, neither the execution and delivery of this Agreement by Proler nor the
consummation of the transactions contemplated by this Agreement will:

                  (a) violate or conflict with any provision of Proler's
      certificate of incorporation or bylaws;

                  (b) violate any law, judgment, order, injunction, decree,
      rule, regulation, or ruling of any court, legislature, arbitral tribunal,
      administrative agency or commission or other governmental or other
      regulatory authority or agency (a "Governmental Entity") applicable to any
      Proler Entity, except as such would not have a Material Adverse Effect,
      individually or in the aggregate;

                  (c) either alone or with the giving of notice or the passage
      of time or both, conflict with, constitute grounds for termination or
      acceleration of, result in the breach of the terms, conditions, or
      provisions of, result in the loss of any benefit to any Proler Entity
      under, or constitute a default under any agreement, instrument, license,
      or permit to which any Proler Entity is a party or by which any Proler
      Entity is bound, except as such would not have a Material Adverse Effect,
      individually or in the aggregate; or

                  (d) require any notices to or consent of any third party,
      including without limitation any Governmental Entity.

            3.1.3 CAPITALIZATION. Proler has authorized capital stock consisting
of 15,000,000 shares of Proler Common Stock, of which 4,717,356 shares were
outstanding on September 15, 1996 and 500,000 shares of preferred stock, par
value $1.00, none of which is outstanding. Proler has 6,057 shares of Common
Stock in treasury as of the execution date of this Agreement. Options to
purchase 140,845 shares were outstanding on September 15, 1996 under grants made
pursuant to the 1988 Plan and the 1994 Plan (collectively, the "Proler Stock
Plans"). All of the outstanding shares of capital stock of Proler have been duly
authorized and are validly issued, fully paid, and nonassessable, and no shares
were issued in violation of preemptive or similar rights of any stockholder or
in violation of any applicable securities laws. Except as set forth above, there
are no shares of capital stock of Proler authorized, issued, or outstanding,
and, except for options granted pursuant to the Proler Stock Plans and the
Rights, there are no preemptive rights or any outstanding subscriptions,
options, warrants, rights, convertible securities, or other agreements or
commitments of Proler of any character relating to the issued or unissued
capital stock or other securities of Proler. There are no outstanding
obligations of Proler to repurchase, redeem, or otherwise acquire any of the
Shares.
                                       11

            3.1.4 SUBSIDIARIES AND JOINT VENTURES. Except as disclosed on
SCHEDULE 3.1.4, Proler has no subsidiaries and owns no stock or other interest
in any other corporation or in any partnership or limited liability company, or
other venture or entity. Each subsidiary of Proler and each joint enterprise in
which Proler has an interest is duly organized, validly existing, and in good
standing under the laws of its jurisdiction of incorporation or formation.

            3.1.5 SEC REPORTS AND FINANCIAL STATEMENTS. Proler has filed with
the SEC, and has made available to Schnitzer true and complete copies of, all
forms, reports, schedules, statements, and other documents required to be filed
by it since December 31, 1994 under the Exchange Act or the Securities Act of
1933 (the "Securities Act") (each of such forms, reports, schedules, statements,
and other documents, to the extent filed and publicly available before the date
of this Agreement, other than preliminary filings, is referred to as a "Proler
SEC Document"). Each Proler SEC Document, at the time filed, (a) did not contain
any untrue statement of a material fact or omit to state a material fact
required to be stated therein or necessary in order to make the statements
therein, in light of the circumstances under which they were made, not
misleading and (b) complied in all material respects with the applicable
requirements of the Exchange Act and the Securities Act, as the case may be, and
the applicable rules and regulations of the SEC thereunder. The financial
statements of all Proler Entities included in the Proler SEC Documents comply as
to form in all material respects with applicable accounting requirements and
with the published rules and regulations of the SEC with respect thereto, have
been prepared in accordance with generally accepted accounting principles
applied on a consistent basis during the periods involved (except as may be
indicated in the notes thereto or, in the case of the unaudited statements, as
permitted by Form 10-Q of the SEC) and fairly present (subject, in the case of
the unaudited statements, to normal, recurring audit adjustments) the
consolidated financial position of Proler and its consolidated subsidiaries as
at the dates thereof and the consolidated results of their operations and cash
flows for the periods then ended.

            3.1.6 INFORMATION SUPPLIED. None of the information supplied or to
be supplied by any Proler Entity specifically for inclusion or incorporation by
reference in (i) the Offer Documents; (ii) the Schedule 14D-9; (iii) the
information to be filed by Proler in connection with the Offer pursuant to Rule
14f-1 promulgated under the Exchange Act (the "Information Statement") or (iv)
the Proxy Statement will, in the case of the Offer Documents, the Schedule
14D-9, and the Information Statement, at the respective times the Offer
Documents, the Schedule 14D-9, and the Information Statement are filed with the
SEC or first published, sent, or given to Proler's stockholders, or, in the case
of the Proxy Statement, at the time the Proxy Statement is first mailed to
Proler's stockholders or at the time of the Stockholders' Meeting, contain any
untrue statement of a material fact or omit to state any material fact required
to be stated therein or necessary in order to make the statements therein, in
light of the circumstances under which they are made, not misleading, except
that no representation or warranty is made by Proler with respect to statements
made or incorporated by reference therein based on information supplied by
Schnitzer or Sub in writing specifically for inclusion or incorporation by
reference therein. The Schedule 14D-9, the Information Statement, and the Proxy
Statement
                                      12

will comply as to form in all material respects with the requirements of the
Exchange Act and the rules and regulations thereunder.

            3.1.7 LEGAL PROCEEDINGS. Except as disclosed in SCHEDULE 3.1.7,
there is neither pending nor, to the knowledge of Proler, threatened by or
against any Proler Entity any legal action, claim, arbitration, investigation,
or administrative proceeding before any Governmental Entity that could (i) have
a Material Adverse Effect on the parties following the Closing; or (ii) enjoin
or restrict the right or ability of Proler to perform its obligations under this
Agreement and, to the knowledge of Proler, there is no basis for any such claim,
litigation, proceeding, or investigation.

            3.1.8 CONTRACTS AND ARRANGEMENTS. SCHEDULE 3.1.8, which is organized
by type of agreement, contains a complete and accurate list of all agreements of
the following types to which any Proler Entity is a party or by which it is
bound and which are material to the Proler Entities (the "Contracts"):

                  (a) any mortgage, note, or other instrument or agreement
      relating to the borrowing of money or the incurrence of indebtedness by
      Proler or Proler's guaranty of any obligation for the borrowing of money;

                  (b) contracts, agreements, purchase orders, or acknowledgment
      forms for the purchase, sale, lease or other disposition of any Proler
      Entity's equipment, products, materials, or capital assets, or for the
      performance of services;

                  (c) contracts or agreements for the joint performance of work
      or services and all other joint venture agreements;

                  (d) contracts or agreements with agents, brokers, consignees,
      sales representatives, or distributors relating to the sale of any Proler
      Entity's products or services;

                  (e) contracts or agreements relating to the employment or
      compensation of any Proler Entity's officers, directors, or employees,
      including without limitation any collective bargaining agreements;

                  (f) any other contract, instrument, agreement, or obligation
      not described in any other section of this Agreement to which any Proler
      Entity is a party or by which it is bound and which contains material
      unfulfilled obligations of any Proler Entity.

                                       13

            3.1.9 REAL PROPERTY; MATERIAL ASSETS.

                  (a) SCHEDULE 3.1.9 contains a list of (i) all real property
      owned by any Proler Entity and (ii) all other assets owned by any Proler
      Entity having an original cost of more than $5,000 (together, the
      "Material Properties and Assets"). Except as set forth in SCHEDULE 3.1.9,
      each Proler Entity has good and marketable title to all of its respective
      Material Properties and Assets subject to no encumbrance, lien, charge, or
      other restriction (including, without limitation, any restriction or
      transfer) of any kind or character and there is no condition, restriction,
      or reservation affecting the title to or utility of any of the Material
      Properties and Assets, other than (i) such imperfections or irregularities
      of title, encumbrances, claims, liens, charges or other conditions,
      restrictions or reservations as do not materially affect the use of the
      properties or assets subject thereto or affected thereby or otherwise
      materially impair business operations at such properties, (ii) statutory
      liens securing payments (including taxes) not yet due and (iii) such
      imperfections or irregularities of title, encumbrances, claims, liens,
      charges or other conditions, restrictions or reservations as do not have a
      Material Adverse Effect on the Proler Entities.

                  (b) Except as does not hot have a Material Adverse Effect with
      regard to buildings and improvements listed on SCHEDULE 3.1.9, (i) there
      are no structural or nonstructural defects of a material character, (ii)
      such buildings and improvements are not in violation of the requirements
      of any Governmental Entity, and all necessary final certificates of
      occupancy have been issued for such buildings and improvements, (iii) all
      licenses and permits required by Governmental Entities have been issued
      for such buildings and improvements and the operations conducted in
      connection with them, (iv) the current use of the buildings and
      improvements does not violate such licenses and permits, (v) all such
      licenses and permits have been paid, and (vi) the remainder of the
      Material Properties and Assets are in good working order and condition,
      ordinary wear and tear excepted, and are useable in the ordinary course of
      business.

            3.1.10 LEASES. SCHEDULE 3.1.10 contains a list of all material
leases with terms in excess of one year to which any Proler Entity is a party
(the "Leases"). Except as does not have a Material Adverse Effect, each Proler
Entity enjoys undisturbed possession to each leasehold interest it holds under
the Leases.

            3.1.11  STATUS OF CONTRACTS AND LEASES.

                  (a) Each of the Contracts and Leases is valid, binding, and
      enforceable by the applicable Proler Entity in accordance with its terms
      and is in full force and effect, except as enforceability may be limited
      or affected by applicable bankruptcy, insolvency, reorganization or other
      laws of general application relating to or affecting the rights of
      creditors and except as enforceability may be limited by principles of
      equity governing specific performance, injunctive relief or other
      equitable remedies. There is no existing default or violation by any
      Proler Entity under any Contract or Lease and no

                                      14

      event has occurred which (whether with or without notice, lapse of time,
      or both) would constitute a default of any Proler Entity under any
      Contract or Lease, except for such defaults as would not have a Material
      Adverse Effect.

                  (b) Proler is not aware of any default by any other party to
      any Contract or Lease or of any event which (whether with or without
      notice, lapse of time, or both) would constitute a default by any other
      party with respect to obligations of that party under any Contract or
      Lease, except for such defaults as would not have a Material Adverse
      Effect.

            3.1.12 COMPLIANCE WITH LAWS. Except for those whose absence would
not have a Material Adverse Effect, each Proler Entity possesses all
governmental and other licenses, certificates, consents, permits, and other
authorizations of Governmental Entities (collectively, "Licenses") legally
required to carry on its business as now conducted. No material violation exists
in respect of, and no proceeding is pending or to Proler's knowledge threatened
to revoke or limit, any such License. Except as disclosed in the Proler SEC
Documents, the businesses of the Proler Entities are not being conducted in
violation of any laws, rules, regulations, ordinances, codes, judgments, orders,
writs, or decrees applicable to its business where such violation would have a
Material Adverse Effect. Except as set forth on SCHEDULE 3.1.12 or disclosed in
the Proler SEC Documents, there have been no violations of such laws, rules,
regulations, ordinances, codes, judgments, orders, writs, and decrees since
December 31, 1990 where such violation would have a Material Adverse Effect.

            3.1.13  ENVIRONMENTAL MATTERS.

                  3.1.13.1 DEFINITIONS. As used in this Agreement,
"Environmental Law" means any federal, state, or local statute, regulation, or
ordinance pertaining to the protection of human health or the environment and
any applicable orders, judgments, decrees, permits, licenses, or other
authorizations or mandates under such laws. "Hazardous Substance" means any
hazardous, toxic, radioactive, or infectious substance, material, or waste as
defined, listed, or regulated under any Environmental Law, and includes without
limitation petroleum oil and its fractions. "Contamination" means the existence
(actual or reasonably suspected) in the environment of a Hazardous Substance, if
the existence or suspected existence of such Hazardous Substance requires any
investigatory, remedial, removal, or other response action under any
Environmental Law, if such response action legally could be required by any
Governmental Entity.

                  3.1.13.2  ENVIRONMENTAL COMPLIANCE.  Except as set forth in
SCHEDULE 3.1.13:

                  (a) Each Proler Entity possesses all material governmental and
      other Licenses it is required to carry under any Environmental Law for its
      business as now conducted. No material violation exists in respect of, and
      no proceeding is pending or threatened to revoke or limit, any such
      License. Each Proler Entity is operating its

                                      15

      business in material compliance with all Environmental Laws. No incident
      regarding environmental matters has occurred in connection with the
      business of any Proler Entity that was required to be reported to a
      Governmental Entity under any Environmental Law that was not so reported,
      except where the failure to report would not have a Material Adverse
      Effect.

                  (b) No real property currently or previously owned, leased, or
      occupied by any Proler Entity is or during Proler's ownership or
      occupation was used as a hazardous waste treatment, storage, or disposal
      facility within the meaning of Subtitle C of the Resource Conservation and
      Recovery Act ("RCRA") or any comparable state Environmental Law. No real
      property currently owned, leased, or occupied by any Proler Entity and to
      Proler's knowledge no real property previously owned, leased, or occupied
      by any Proler Entity is listed on the National Priority List or the
      Comprehensive Environmental Response, Compensation and Liability
      Information System list compiled by the Environmental Protection Agency or
      any comparable listing compiled by any state or local Governmental Entity
      having jurisdiction over environmental matters.

                  (c) No Proler Entity has received notice from any Governmental
      Entity or other Person that it has been named as a responsible or
      potentially responsible party with respect to any site listed on the lists
      described in paragraph (b) above or that it otherwise is potentially
      liable for Contamination under any Environmental Law.

                  (d) Except as would not have a Material Adverse Effect, no
      portion of any property currently owned, leased, or occupied by any Proler
      Entity is Contaminated. Except as would not have a Material Adverse
      Effect, with respect to property previously owned, leased, or occupied by
      any Proler Entity, no Contamination occurred during any Proler Entity's
      ownership, lease, or occupancy.

            3.1.14  TAX MATTERS.

                  3.1.14.1 RETURNS. Each Proler Entity has filed on a timely
basis all federal, state, foreign, and other returns, reports, forms,
declarations, and information returns required to be filed by it with respect to
Taxes (as defined below) that relate to the business, results of operations,
financial condition, properties, or assets of the Proler Entities (collectively,
the "Proler Returns") and has paid on a timely basis all Taxes shown to be due
on the Proler Returns. Except as detailed on SCHEDULE 3.1.14, no Proler Entity
is part of an affiliated group of corporations that files or has the privilege
of filing consolidated tax returns pursuant to Section 1501 of the Internal
Revenue Code of 1986, as amended (the "Code") or any similar provisions of
state, local, or foreign law, and no Proler Entity is a party to any tax-sharing
or tax-allocation agreement. No extensions of time have been requested for
Proler Returns that have not been filed except as set forth on SCHEDULE 3.1.14.
Except as set forth on SCHEDULE 3.1.14, no Proler Entity has received any notice
of audit and there are no outstanding agreements or waivers extending the
applicable statutory periods of limitation for such Taxes for

                                       16

any period. All Proler Returns filed are complete and accurate in all material
respects. Proler has provided Schnitzer with complete and accurate copies of
Proler Returns for each of Proler's fiscal years 1991 through 1995 and the Forms
1139 related to any loss or credit or carryback claim for those years.

                  3.1.14.2 TAXES PAID OR RESERVED. The reserves for taxes
reflected in the current balance sheet most recently filed as part of a Proler
SEC Document are adequate for payment of Taxes in respect of periods ending on
or before the Closing Date. All reserves for Taxes have been determined in
accordance with generally accepted accounting principles consistently applied
throughout the periods involved and with prior periods. All Taxes that any
Proler Entity has been required to collect or withhold have been collected or
withheld and, to the extent required, have been paid to the proper taxing
authority except where the failure to do so would not have a Material Adverse
Effect. No Proler Entity has elected to be treated as a consenting corporation
pursuant to Section 341(f) of the Code.

                  3.1.14.3 LOSS CARRYFORWARDS; INVESTMENT TAX CREDIT
CARRYFORWARDS. SCHEDULE 3.1.14 contains a complete and accurate list of net
operating loss ("NOL") carryforwards and investment tax credit ("ITC")
carryforwards available to Proler or one or more other Proler Entities for
federal income tax purposes that originated in taxable years set forth in
SCHEDULE 3.1.14.

                  3.1.14.4 DEFINITION. As used in this Agreement, the term
"Taxes" means all federal, state, local, or foreign taxes, charges, fees,
levies, or other assessments, including without limitation all net income, gross
income, gross receipts, premium, sales, use, ad valorem, transfer, franchise,
profits, license, withholding, payroll, employment, excise, estimated severance,
stamp, occupation, property, or other taxes, fees, assessments, or charges of
any kind whatsoever, together with any interest and any penalties (including
penalties for failure to file in accordance with applicable information
reporting requirements), and additions to tax.

            3.1.15  EMPLOYEES AND LABOR RELATIONS MATTERS.  Except as set forth 
on SCHEDULE 3.1.15 or as provided in this Agreement:

                  (a) To the knowledge of Proler, no Proler Entity employee or
      executive designated by Schnitzer as a key employee and listed as such on
      SCHEDULE 3.1.15 has any plans to terminate employment with the Proler 
      Entity that employs him or her;

                  (b) The Proler Entities have complied in all material respects
      with all labor and employment laws, including provisions thereof relating
      to wages, hours, equal opportunity, collective bargaining, and the payment
      of social security and other taxes, except where the failure to comply
      would not have a Material Adverse Effect;

                  (c) There is no unfair labor practice charge, complaint,
      representation petition, or other action against any Proler Entity pending
      or to Proler's knowledge
                                      17

      threatened before the National Labor Relations Board or any other
      Governmental Entity and no Proler Entity is subject to any order to
      bargain by the National Labor Relations Board;

                  (d) There is no labor strike, request for representation,
      slowdown, or work stoppage actually occurring, pending, or to Proler's
      knowledge threatened against any Proler Entity;

                  (e) To Proler's knowledge no questions concerning
      representation have been raised or are threatened with respect to
      employees of any Proler Entity;

                  (f) No grievance that might have a material adverse effect on
      any Proler Entity and no arbitration proceeding arising out of or under
      any collective bargaining agreement is pending and to Proler's knowledge
      no basis exists for any such grievance or arbitration proceeding; and

                  (g) To Proler's knowledge no employee of any Proler Entity is
      subject to any noncompetition, nondisclosure, confidentiality, employment,
      consulting, or similar agreements with Persons other than a Proler Entity
      relating to the present business activities of the Proler Entities.

            3.1.16 EMPLOYEE BENEFITS. SCHEDULE 3.1.16 lists all pension,
retirement, profit sharing, deferred compensation, bonus, commission, incentive,
life insurance, health and disability insurance, hospitalization, and all other
employee benefit plans or arrangements (including, without limitation, any
contracts or agreements with trustees, insurance companies or others relating to
any such employee benefit plans or arrangements) established, maintained, or
contributed to by any Proler Entity, and complete and accurate copies of all
those plans or arrangements have been provided to Schnitzer. The employee
pension benefit plans (within the meaning of Section 3(2) of the Employee
Retirement Income Security Act of 1974, as amended ("ERISA")) established and
maintained by Proler Entities that are subject to ERISA are listed separately as
ERISA Plans on SCHEDULE 3.1.16 (the "ERISA Plans"). The ERISA Plans (to the
knowledge of Proler with respect to the ERISA Plans of the Joint Ventures)
comply in all material respects with the applicable requirements of ERISA and
any other applicable laws and regulations. With respect to ERISA Plans intended
to qualify under Section 401(a) of the Code, each applicable Proler Entity has
received from the Internal Revenue Service a favorable determination for each of
the ERISA Plans and their related trusts that each of the ERISA Plans is
qualified and the related trust is tax-exempt under Section 501(a) of the Code.
There has been no event subsequent to that determination that has adversely
affected the tax qualified status of the ERISA Plans (to the knowledge of Proler
with respect to the ERISA Plans of the Joint Ventures) or the exemption of the
related trusts other than changes in the Code that are not effective as of the
Closing Date. No "accumulated funding deficiency" as defined in Section
302(a)(2) of ERISA or Section 412(a) of the Code exists, or has existed, with
respect to any of the ERISA Plans. The present value of all accrued benefits
under each of the funded ERISA Plans does not exceed by more than $1,000,000 the
value of such ERISA Plan's assets, less all

                                       18

liabilities other than those attributable to accrued benefits. None of the
Proler Entities nor a controlled group of corporations of which any Proler
Entity is a member have any "potential withdrawal liability," as defined in
Section 4201 of ERISA. None of the ERISA Plans (to the knowledge of Proler with
respect to the ERISA Plans of the Joint Ventures), its related trusts or any
trustee, investment manager or administrator thereof has engaged in a nonexempt
"prohibited transaction," as such term is defined in Section 406 of ERISA and
Section 4975 of the Code. To the knowledge of Proler, there are not and have not
been any excess deferrals or excess contributions under any ERISA Plan that have
not been corrected. Each ERISA Plan is and has been operated and administered in
all material respects in conformance with the requirements of all applicable
laws and regulations, whether or not the ERISA Plan documents have been amended
to reflect such requirements. Except as set forth in SCHEDULE 3.1.16, no Proler
Entity has any obligation of any kind (whether under the terms of the ERISA
Plans or under any understanding with employees) to make payments under, or to
pay contributions to, any plan, agreement, or other arrangement for deferred
compensation of employees, whether or not tax qualified, including, without
limitation, a single employer tax qualified plan, a tax qualified plan of a
controlled group of corporations, a multi-employer pension plan, a nonqualified
deferred compensation plan, an individual employment or compensation agreement,
or a commitment to provide medical benefits to retirees.

            3.1.17 ABSENCE OF CERTAIN CHANGES OR EVENTS. Except as disclosed in
SCHEDULE 3.1.17, since July 31, 1996, there has not been:

                  (a) Any event, occurrence, development, or state of
      circumstances or facts which could reasonably be expected to result in a
      Material Adverse Effect on the business, results of operations, financial
      position, assets, or properties of the Proler Entities;

                  (b) Any damage, destruction, or casualty loss, whether insured
      against or not, to the assets or properties of the Proler Entities that
      would result in a Material Adverse Effect;

                  (c) Any increase in the rate or terms of compensation payable
      or to become payable by Proler to its directors, officers, or key
      employees; any increase in the rate or terms of any bonus, insurance,
      pension, or other employee benefit plan, payment, or arrangement made to,
      for or with any such directors, officers, or key employees; any special
      bonus or remuneration paid; or any written employment contract executed or
      amended;

                  (d) Any amendment to Proler's Certificate of Incorporation or
      Bylaws or any entry into any material agreement, commitment, or
      transaction (including, without limitation, any borrowing, capital
      expenditure or capital financing or any amendment, modification, or
      termination of any existing agreement, commitment, or transaction) by the
      Proler Entities, except agreements, commitments, or transactions in the
      ordinary
                                       19

      course of business and consistent with past practices or as expressly 
      contemplated in this Agreement;

                  (e) Any direct or indirect declaration, setting aside, or
      payment of any dividend or other distribution (whether in cash, stock,
      property, or any combination thereof) in respect of the common stock of
      Proler, or any direct or indirect repurchase, redemption, or other
      acquisition by Proler of any shares of its stock;

                  (f) Any issuance or sale of any stock of Proler (other than
      issuances pursuant to the exercise of options outstanding on April 30,
      1996) or any issuance or granting of any option, warrant, or right to
      purchase any stock of Proler (other than options granted under the Proler
      Stock Plans on or before August 22, 1996) or any commitment to do any of
      the foregoing;

                  (g) Any conduct of business that is outside the ordinary
      course of business or not substantially in the manner that the Proler
      Entities have previously conducted its business;

                  (h) Any material purchase or other acquisition of property by
      any Proler Entity, any sale, lease, or other disposition of property by
      any Proler Entity, or any expenditure by any Proler Entity, except in the
      ordinary course of business;

                  (i) Any incurrence of any noncontract liability which, either
      singly or in the aggregate is material to the business, results of
      operations, financial condition, or prospects of the Proler Entities; or

                  (j) Any encumbrance or consent to encumbrance of any material
      property or assets of the Proler Entities except in the ordinary course of
      business and except for the types of encumbrances listed in Section 
      3.1.19.

            3.1.18 UNDISCLOSED LIABILITIES. Except for liabilities or
obligations described in the Proler SEC Documents, SCHEDULE 3.1.18, or in
another Schedule to this Agreement, neither the Proler Entities nor any of the
property of the Proler Entities are subject to any material liability or
obligation, whether absolute, contingent, known, or unknown, that was not
included or adequately reserved against in the financial statements contained in
the Proler SEC Documents.

            3.1.19 INSURANCE. All material property (fire and extended coverage
perils), business interruption, public liability, workers' compensation,
directors' and officers' liability, and other insurance policies and fidelity
and surety bonds of any Proler Entity in Proler's possession are identified on
SCHEDULE 3.1.19(the "Policies"), and all such Policies are currently in full
force and effect. Copies of the Policies have been provided to Schnitzer. To
Proler's knowledge, there are no disputes with insurers under the Policies, and
all premiums due and payable thereto have been paid. To Proler's knowledge,
there are no pending or threatened
                                      20

cancellations or nonrenewals or premium increases with respect to any of the
Policies, and each Proler Entity is in compliance with all material conditions
contained in its Policies.

            3.1.20  INTELLECTUAL PROPERTY.

                  (a)   The term "Intellectual Property Assets" means
                        collectively:

                        (i) all registered and unregistered trademarks, service
            marks, and applications (collectively, "Marks");

                        (ii) all patents and patent applications (collectively,
            "Patents");

                        (iii) all copyrights in both published works and
            unpublished works that are material to any Proler Entity's
            businesses (collectively, "Copyrights"); and

                        (iv) all trade secrets used in the conduct of the
            businesses of the Proler Entities. SCHEDULE 3.1.20 contains a list
            and summary description of all Marks, Patents and Copyrights.

                  (b) Each Proler Entity owns, has the right to use, sell,
      license, dispose of, and to bring actions for the misappropriation of all
      of Intellectual Property Assets, material to the conduct of its business
      without any conflict with or infringement of the rights of others, free
      and clear of all liens, charges, encumbrances, or other restrictions of
      any kind.

                  (c) SCHEDULE 3.1.20 contains a list of all material agreements
      relating to the Intellectual Property Assets material to the conduct of
      its business to which any Proler Entity is a party.

                  (d) To Proler's knowledge, no Intellectual Property Asset
      material to the conduct of business of any Proler Entity is infringed or
      has been challenged.

                  (e) There is no action, suit, proceeding, judgment, order, or
      writ pending or to Proler's knowledge, threatened against any Proler
      Entity contesting the validity, ownership, or right to use, sell, license,
      dispose of, or to bring actions for the misappropriation of the
      Intellectual Property Assets material to the conduct of its business.

            3.1.21 GUARANTIES; POWERS OF ATTORNEY. Except as set forth on
SCHEDULE 3.1.21, no Proler Entity is a guarantor or otherwise liable for any
liability or material obligation (including without limitation any indebtedness)
of any other Person. To Proler's knowledge, there are no outstanding powers of
attorney executed on behalf of any Proler Entity.

                                       21

            3.1.22 BROKERS. No broker, investment banker, financial advisor, or
other Person, other than J.C. Bradford & Co. and Chase Securities, Inc., the
fees and expenses of which will be paid by Proler, is entitled to any broker's,
finder's, financial advisor's, or other similar fee or commission in connection
with the transactions contemplated by this Agreement based upon arrangements
made by or on behalf of Proler. Proler has provided Schnitzer true and correct
copies of all agreements between any Proler Entity and each of J.C. Bradford &
Co. and Chase Securities, Inc.

            3.1.23 RIGHTS AGREEMENT. Proler has provided Schnitzer with a
complete and correct copy of the Rights Agreement, including all amendments and
exhibits thereto. The amendment to the Rights Agreement attached to this
Agreement as Annex B has been duly authorized by the Board of Directors of
Proler and has been duly executed by Proler, and, accordingly, the execution of
this Agreement, the announcement or making of the Offer, the acquisition of
Shares pursuant to the Offer, and the Merger and the other transactions
contemplated in this Agreement will not cause the Rights to become exercisable
or result in either Schnitzer or Sub or any of their Affiliates being considered
to be an "Acquiring Person" (as defined in the Rights Agreement) or the
occurrence of a "Distribution Date", a "Section 11(a)(ii) Event" or a "Section
13 Event" (as such terms are defined in the Rights Agreement).

            3.1.24 STATE TAKEOVER STATUTES AND OTHER TAKEOVER PROVISIONS. The
Board of Directors of Proler has approved the Offer, the Merger, and this
Agreement and such approval is sufficient to render inapplicable to the Offer,
the Merger, and this Agreement and the transactions contemplated by this
Agreement the provisions of Section 203 of the DGCL and the provisions of
Article Fifteenth of Proler's Certificate of Incorporation. To the best of
Proler's knowledge, no other state takeover statute or similar statute or
regulation applies or purports to apply to the Offer, the Merger, this
Agreement, or any of the transactions contemplated by this Agreement.

            3.1.25 DEFERRED COMPENSATION OBLIGATIONS. Proler's aggregate
discounted (at 9%) deferred compensation obligations, both vested and unvested,
to all current and former employees of any Proler Entity, net of related
insurance benefits, is (or, as of the consummation of the Offer and as of the
Effective Time, will be) not more than $1,650,000.

            3.1.26 DISCLOSURE. None of representations and warranties made by
Proler in this Agreement contains any untrue statement of a material fact or
omits a material fact necessary to make each statement contained therein not
misleading. To Proler's knowledge, neither Proler nor any responsible officer or
director of Proler has intentionally concealed any fact known by such Person to
have a material adverse effect upon the existing or expected financial
condition, operating results, assets, customer relations, employee relations, or
business prospects of any Proler Entity.

      3.2 SCHNITZER'S REPRESENTATIONS AND WARRANTIES. Schnitzer represents and
warrants to Proler as follows:
                                      22

            3.2.1 CORPORATE EXISTENCE AND AUTHORITY. Schnitzer is a corporation
duly organized, validly existing, and in good standing under the laws of the
State of Oregon. Schnitzer has the full corporate power and authority to enter
into this Agreement and carry out its terms. Schnitzer has taken all corporate
action necessary to authorize the execution, delivery, and performance of this
Agreement. This Agreement has been duly and validly executed and delivered by
Schnitzer and is binding upon and enforceable against Schnitzer in accordance
with its terms, except as enforceability may be limited or affected by
applicable bankruptcy, insolvency, reorganization, or other laws of general
application relating to or affecting the rights of creditors and except as
enforceability may be limited by rules of law governing specific performance,
injunctive relief, or other equitable remedies.

            3.2.2 CORPORATE EXISTENCE AND AUTHORITY OF SUB. Sub is a corporation
duly organized, validly existing, and in good standing under the laws of the
State of Delaware. Sub has the full corporate power and authority to enter into
this Agreement and carry out its terms. Sub has taken all corporate action
necessary to authorize the execution, delivery, and performance of this
Agreement. This Agreement has been duly and validly executed and delivered by
Sub and is binding upon and enforceable against Sub in accordance with its
terms, except as enforceability may be limited or affected by applicable
bankruptcy, insolvency, reorganization, or other laws of general application
relating to or affecting the rights of creditors and except as enforceability
may be limited by rules of law governing specific performance, injunctive
relief, or other equitable remedies. All of the issued and outstanding voting
capital stock of Sub is owned by Schnitzer.

            3.2.3 NO ADVERSE CONSEQUENCES.  Neither the execution and delivery 
of this Agreement by Schnitzer and by Sub nor the consummation of the
transactions contemplated by this Agreement will:

                  (a) violate or conflict with any provision of Schnitzer's
      Articles of Incorporation or Bylaws or Sub's certificate of incorporation
      or bylaws;

                  (b) violate any law, judgment, order, injunction, decree,
      rule, regulation, or ruling of any Governmental Entity applicable to
      Schnitzer or Sub, except such as would not have a Material Adverse Effect,
      individually or in the aggregate;

                  (c) either alone or with the giving of notice or the passage
      of time or both, conflict with, constitute grounds for termination or
      acceleration of, result in the breach of the terms conditions or
      provisions of, result in the loss of any benefit to Schnitzer under, or
      constitute a default under any agreement, instruction, license, or permit
      to which Schnitzer or Sub is a party or by which it is bound, except such
      as would not have a Material Adverse Effect, individually or in the
      aggregate; or

                  (d) except as to HSR Act (as defined in Section below)
      compliance, require any notices to or consent of any third party,
      including without limitation any Governmental Entity.

                                      23

            3.2.4 LEGAL PROCEEDINGS. There is neither pending nor, to the
knowledge of Schnitzer or Sub, threatened by or against Schnitzer or Sub any
legal action, claim, arbitration, investigation, or administrative proceeding
before any Governmental Entity that could enjoin or restrict either Schnitzer's
or Sub's right or ability to perform its obligations under this Agreement and,
to the knowledge of Schnitzer, there is no basis for any such claim, litigation,
proceeding or investigation.

            3.2.5 BROKERS. No broker, investment banker, financial advisor, or
other Person is entitled to any broker's, finder's, financial advisor's or other
similar fee or commission in connection with the transactions contemplated by
this Agreement based upon arrangements made by or on behalf of Schnitzer.

            3.2.6 INFORMATION SUPPLIED. None of the information supplied or to
be supplied by Schnitzer or Sub specifically for inclusion or incorporation by
reference in the Proxy Statement or Schedule 14D-9 will, at the time they are
first filed with the SEC, contain any untrue statement of a material fact or
omit to state any material fact required to be stated therein or necessary in
order to make the statements therein, in light of the circumstances under which
they were made, not misleading, except that no representation is made by
Schnitzer or Sub with respect to statements made or information supplied by
Proler in writing specifically for inclusion or incorporation by reference
therein.

            3.2.7 FINANCIAL CAPABILITY. As of the date hereof, Schnitzer has
sufficient financial resources to consummate the transactions contemplated by
this Agreement. None of Sub's or Schnitzer's obligations pursuant to this
Agreement are subject to Schnitzer's or Sub's obtaining or securing any
financing or credit support for the transactions contemplated hereby.

                                   ARTICLE 4

                                   COVENANTS

      4.1 CONTINUATION OF BUSINESS. From and after the execution date of this
Agreement until Closing, Proler will use its commercially reasonable best
efforts to, and to cause each Proler Entity other than Proler, to: (i) keep the
business and organization of each Proler Entity intact until the Closing; and
(ii) carry on the business of each Proler Entity in its usual manner until
Closing. Without limiting the generality of the foregoing, except as expressly
provided to the contrary in this Agreement or with the prior written consent of
Schnitzer, until the Closing, Proler agrees that:

                  (a) Proler will not declare, pay, or set aside for payment any
      dividend or other distribution of money or property in respect of its
      capital stock;

                  (b) Proler will not issue any shares of its capital stock
      (except upon the valid exercise of currently outstanding Options under the
      Proler Stock Plans), or issue or sell any securities convertible into, or
      exchangeable for, or options, warrants to

                                      24

      purchase, or rights to subscribe to, any shares of its capital stock or
      subdivide or in any way reclassify any shares of its capital stock, or
      repurchase, reacquire, cancel, or redeem any such shares;

                  (c) Proler will use its commercially reasonable best efforts
      to ensure that (i) the assets, property and rights now owned by each
      Proler Entity will be used, preserved, and maintained, as far as
      practicable, in the ordinary course of business, to the same extent and in
      the same condition as said assets, property, and rights are on the date of
      this Agreement, and no unusual or novel methods of manufacture, purchase,
      sale, management, or operation of said properties or business or
      accumulation, disposition, or valuation of inventory will be made or
      instituted; (ii) no Proler Entity will encumber any of its material assets
      other than in connection with Proler's credit arrangements with Texas
      Commerce Bank, N.A. or make any material commitments relating to such
      assets, property, or business, except in the ordinary course of its
      business. Proler will use its commercially reasonable best efforts to
      ensure that each Proler Entity will pay all debts when due in the usual
      course of business;

                  (d) Proler will, and Proler will use its commercially
      reasonable best efforts to ensure that each Proler Entity will, comply in
      all material respects with all statutes, laws, ordinances, rules, and
      regulations applicable to it in the ordinary course of business;

                  (e) Proler will, and Proler will use its commercially
      reasonable best efforts to ensure that each Proler Entity will, use its
      commercially reasonable best efforts to keep or cause to be kept the
      Policies (or substantial equivalents) in such amounts duly in force until
      the Closing Date and will give Schnitzer notice of any material change in
      the Policies;

                  (f) Proler will not incur additional debt (including without
      limitation obligations under leases for real or personal property whether
      or not required to be capitalized under generally accepted accounting
      principles), incur or increase any obligation or liability (fixed,
      contingent, or other, including without limitation liabilities as a
      guarantor or otherwise with respect to obligations of others) except in
      the ordinary and usual course of its business and consistent with past
      practices, forgive or release any material debt or claim, give any waiver
      of any right of material value, or voluntarily suffer any extraordinary
      loss;

                  (g) Proler will not make any payment to discharge or satisfy
      any lien or encumbrance or pay any obligation or liability (fixed or
      contingent) other than (i) current liabilities (including the current
      portion of any long-term liabilities) included in the financial statements
      contained in the Proler SEC Documents and (ii) current liabilities
      incurred or maturing in the ordinary course of business since the date of
      the current balance sheet most recently filed as part of a Proler SEC
      Document or
                                      25

      (iii) payments under its revolving credit facility with Texas Commerce
      Bank, N.A. made in the ordinary course of business and consistent with 
      past practices;

                  (h) Proler will not, and without prior consultation with
      Schnitzer Proler will take no action to, cause any Proler Entity to
      acquire any assets other than assets acquired in the ordinary and usual
      course of its business and consistent with past practices;

                  (i) Proler will not, and without prior consultation with
      Schnitzer Proler will take no action to cause any Proler Entity to,
      purchase or otherwise acquire, or agree to purchase or otherwise acquire,
      any debt or equity securities of any Person other than equity securities
      issued by a money market fund registered as an investment company under
      the Investment Company Act of 1940;

                  (j) Proler will not, and without prior consultation with
      Schnitzer Proler will take no action to cause any Proler Entity to, enter
      into any transaction or contract or make any commitment to do the same,
      except (i) as set forth on SCHEDULE 4.1, or (ii) in the ordinary and usual
      course of business and not requiring the payment in any case of an amount
      in excess of $25,000 annually;

                  (k) Except as set forth on SCHEDULE 4.1, Proler will not, and
      without prior consultation with Schnitzer Proler will take no action to
      cause any Proler Entity to, increase the wages, salaries, compensation,
      pension, or other benefits payable, or to become payable by it, to any of
      its officers, employees, or agents, including without limitation any bonus
      payments or severance or termination pay, other than increases in wages
      and salaries required by employment arrangements existing on the execution
      date of this Agreement or otherwise in the ordinary and usual course of
      its business;

                  (l) Proler will not, and without prior consultation with
      Schnitzer Proler will take no action to cause any Proler Entity to,
      implement or agree to any implementation of or amendment or supplement to
      any employee profit sharing, stock option, stock purchase, pension, bonus,
      commission, incentive, retirement, medical reimbursement, life insurance,
      deferred compensation, or any other employee benefit plan or arrangement;

                  (m) Proler will not, and without prior consultation with
      Schnitzer Proler will take no action to cause any Proler Entity to, change
      its accounting methods, policies or practices;

                  (n) When the consent of any third party to the transactions
      contemplated by this Agreement is required under the terms of any Contract
      to which any Proler Entity is a party or by which it is bound, Proler will
      use its commercially reasonable best efforts to, and to cause any affected
      Proler Entity to use its commercially

                                       26

      reasonable best efforts to, obtain such consent on terms and conditions
      not materially less favorable than those in effect on the execution date
      of this Agreement;

                  (o) Proler will, and will use its commercially reasonable best
      efforts to cause each Proler Entity to, maintain its books and records in
      accordance with past practices;

                  (p) Proler will, and will use its commercially reasonable best
      efforts to cause each Proler Entity to, pay and discharge all taxes,
      assessments, governmental charges, and levies imposed upon it, its income
      or profits, or upon any property belonging to it, in all cases before the
      date on which penalties attach thereto; and

                  (q) Proler will not amend its Certificate of Incorporation or 
      Bylaws.

      4.2   NO SOLICITATION.

            4.2.1 Proler and its officers, directors, employees,
representatives, and agents will immediately cease any discussions or
negotiations with any parties that may be ongoing with respect to a Takeover
Proposal (as defined below). Unless this Agreement has been terminated in
accordance with its terms, and provided that neither Schnitzer nor Sub is in
material violation of this Agreement, Proler will not authorize or permit any of
its officers, directors, or employees or any investment banker, financial
advisor, attorney, accountant, or other representative retained by it or any
subsidiary to (i) solicit, initiate, or encourage (including by way of
furnishing non-public information about the Proler Entities), or take any other
action to facilitate, any inquiries or the making of any proposal that
constitutes, or may reasonably be expected to lead to, any Takeover Proposal or
(ii) participate in any discussions or negotiations regarding any Takeover
Proposal; PROVIDED, HOWEVER, that, if at any time before the acceptance for
payment of Shares pursuant to the Offer, the Board of Directors of Proler
determines in good faith, after consultation with counsel, that it is necessary
to do so in order to comply with its fiduciary duties to Proler's stockholders
under applicable law, Proler may, in response to an unsolicited Takeover
Proposal, and subject to compliance with Section , (x) furnish information with
respect to Proler to any Person pursuant to a confidentiality agreement in
substantially the same form entered into between Proler and Schnitzer and (y)
participate in discussions and negotiations regarding such Takeover Proposal.
Without limiting the foregoing, it is understood that any violation of the
restrictions set forth in the preceding sentence by any director or executive
officer of Proler or any other Proler Entity or any investment banker, financial
advisor, attorney, accountant, or other representative of Proler or any other
Proler Entity will be deemed to be a breach of this Section by Proler. For
purposes of this Agreement, "Takeover Proposal" means any inquiry, proposal, or
offer from any Person relating to any direct or indirect acquisition or purchase
of a substantial amount of assets of Proler or any other Proler Entity or of
over 20 percent of any class of equity securities of Proler or any other Proler
Entity, any tender offer or exchange offer that if consummated would result in
any Person beneficially owning 20 percent or more of any class of equity
securities of Proler or any other Proler Entity, any merger, consolidation,
business combination, sale of substantially

                                      27

all the assets, recapitalization, liquidation, dissolution or similar
transaction involving Proler or any other Proler Entity, other than the
transactions contemplated by this Agreement, or any other transaction the
consummation of which could reasonably be expected to impede, interfere with,
prevent, or materially delay the Offer or the Merger or that could reasonably be
expected to dilute materially the benefits to Schnitzer of the transactions
contemplated by this Agreement.

            4.2.2 Except as set forth in this Section , and unless this
Agreement has been terminated in accordance with its terms, and provided that
neither Schnitzer nor Sub is in material violation of this Agreement, neither
the Board of Directors of Proler nor any committee thereof will (i) withdraw or
modify, or propose to withdraw or modify, in a manner adverse to Schnitzer, the
approval or recommendation by such Board of Directors or such committee of the
Offer, this Agreement, or the Merger; (ii) approve or recommend, or propose to
approve or recommend, any Takeover Proposal; or (iii) cause Proler to enter into
any agreement with respect to any Takeover Proposal. Notwithstanding the
foregoing, in the event that before the time of acceptance for payment of Shares
in the Offer the Board of Directors of Proler determines in good faith, after
consultation with counsel, that it is necessary to do so in order to comply with
its fiduciary duties to Proler's stockholders under applicable law, the Board of
Directors of Proler may withdraw or modify its approval or recommendation of the
Offer, this Agreement, and the Merger, approve or recommend a Superior Proposal
(as defined below), or cause Proler to enter into an agreement with respect to a
Superior Proposal, but in each case only at a time that is after the second
business day following Schnitzer's receipt of written notice (a "Notice of
Superior Proposal") advising Schnitzer that the Board of Directors of Proler has
received a Superior Proposal, specifying the material terms and conditions of
such Superior Proposal and identifying the Person making such Superior Proposal.
In addition, if Proler proposes to enter into an agreement with respect to any
Takeover Proposal, it will concurrently with entering into such an agreement
pay, or cause to be paid, to Schnitzer the Expenses and the Termination Fee (as
such terms are defined in Section ). For purposes of this Agreement, a "Superior
Proposal" means any bona fide Takeover Proposal to acquire, directly or
indirectly, for consideration consisting of cash and/or securities, more than 50
percent of the shares of Proler Common Stock then outstanding or all or
substantially all the assets of Proler and otherwise on terms which the Board of
Directors of Proler determines in its good faith judgment (after consultation
with J.C. Bradford & Co. or another financial advisor of nationally recognized
reputation) to be more favorable to Proler's stockholders than the Offer and the
Merger.

            4.2.3 In addition to the obligations of Proler set forth in Sections
4.2.1 and 4.2.3, Proler will immediately advise Schnitzer orally and in writing
of any request for information or of any Takeover Proposal, or any inquiry with
respect to or that could lead to any Takeover Proposal, the material terms and
conditions of such request, Takeover Proposal, or inquiry and the identity of
the Person making such request, Takeover Proposal, or inquiry. Proler will keep
Schnitzer fully informed of the status and details (including amendments or
proposed amendments) of any such request, Takeover Proposal or inquiry.

                                       28

            4.2.4 Nothing contained in Section will prohibit Proler from making
any disclosure to Proler's stockholders if, in the opinion of the Board of
Directors of Proler, after consultation with counsel, failure so to disclose
would be inconsistent with its fiduciary duties to Proler's stockholders under
applicable law; PROVIDED, HOWEVER, neither Proler nor its Board of Directors nor
any committee thereof will (except as permitted by Section ), withdraw or
modify, or propose to withdraw or modify, its position with respect to the Offer
or the Merger or approve or recommend, or propose to approve or recommend, a
Takeover Proposal.

      4.3 DUE DILIGENCE. For the period up to and including the Closing Date,
Proler will provide, and cause each Proler Entity other than Proler to provide,
to Schnitzer and its authorized agents access to all of each Proler Entity's
physical assets, facilities, financial information, production records,
contracts and other corporate records and documents as Schnitzer deems necessary
to conduct its due diligence into each Proler Entity's business operations.
Schnitzer will have reasonable access during normal working hours to all Proler
Entity's premises, properties, and facilities and will be allowed to meet with
each Proler Entity's management personnel, employees, and any outside
consultants of the Proler Entities, including without limitation auditors and
accountants, investment and other bankers, tax and financial advisors, and
environmental consultants. No later than 10 days after the execution date of
this Agreement, Proler will provide to Schnitzer copies of all documents listed
or referred to in any Schedule to this Agreement. In addition, Proler will
exercise its best efforts to make available to Schnitzer any items and materials
reasonably requested by Schnitzer in connection with its due diligence efforts.
No investigation by Schnitzer or any of its authorized representatives pursuant
to this Section will effect any representation, warranty, or closing condition
of any party to this Agreement.

      4.4 HART SCOTT RODINO. Each of Proler and Schnitzer will within five days
after executing this Agreement prepare and file with the Federal Trade
Commission (the "FTC") and the Department of Justice (the "DOJ") the premerger
notification form required under the Hart Scott Rodino Antitrust Improvements
Act (the "HSR Act") and a request for early termination of the waiting period.
The parties will further (i) discuss with each other any comments the reviewing
party may have; (ii) cooperate with each other in connection with such filings,
which cooperation will include, but not be limited to, furnishing the other with
such information or documents as may be reasonably required in connection with
such filings; (iii) promptly file after any request by the FTC or the DOJ any
appropriate information or documents so requested by the FTC or the DOJ; and
(iv) notify each other of any other communications with the FTC or the DOJ that
relate to the transactions contemplated by this Agreement and, to the extent
appropriate, permit the other to participate in any conferences with the FTC or
the DOJ. The parties will use best efforts to accelerate and obtain HSR Act
clearance. Each of Proler and Schnitzer will pay its own expenses in connection
with the preparation of the premerger notification form. The parties will each
pay one-half of the filing fee required by the HSR Act and one-half of the fees
of any experts or advisers mutually retained to assist the parties to obtain HSR
Act clearance.
                                       29

      4.5 OTHER GOVERNMENT CONSENTS. Promptly following the execution of this
Agreement, the parties will proceed to prepare and file with the appropriate
Governmental Entities any requests for approval or waiver (in addition to those
specifically described above), if any, that are required from Governmental
Entities in connection with the transactions contemplated by this Agreement, and
the parties will diligently and expeditiously prosecute and cooperate fully in
the prosecution of such requests for approval or waiver and all proceedings
necessary to secure such approvals and waivers.

      4.6 COMMERCIALLY REASONABLE BEST EFFORTS; NO INCONSISTENT ACTION. Subject
to the terms and conditions hereof, and to the fiduciary duties of the Proler
Board under applicable law as advised by counsel, each party will use its
commercially reasonable best efforts to effect the transactions contemplated by
this Agreement and to fulfill the conditions to the obligations of the opposing
parties set forth in Article of this Agreement. No party will take any action
inconsistent with its obligations under this Agreement or that could hinder or
delay the consummation of the transactions contemplated by this Agreement,
except that nothing in this Section will limit the rights of the parties under
Article of this Agreement.

      4.7 CHANGED CIRCUMSTANCES. Each of Proler and Schnitzer will notify the
other party promptly of any fact or occurrence between the date of this
Agreement and the Closing Date of which it becomes aware which makes any of its
(or its subsidiary's) representations contained in this Agreement untrue or
causes any breach of its (or its subsidiary's) obligations under this Agreement.

      4.8   FEES AND EXPENSES.

            4.8.1 Except as provided below in Section , all fees and expenses
incurred in connection with the Offer and Merger, this Agreement, and the
transactions contemplated by this Agreement will be paid by the party incurring
such fees or expenses, whether or not the Merger is consummated.

            4.8.2 Proler will pay, or cause to be paid, in same day funds to
Schnitzer the sum of (i) Schnitzer's Expenses (as defined below) up to a maximum
amount of $1,000,000 and (ii) $2,000,000 (the "Termination Fee") upon demand if
(x) Schnitzer terminates this Agreement under Section ; or (y) Proler terminates
this Agreement pursuant to Section . In addition, Proler will pay, or cause to
be paid, in same day funds to Schnitzer, Schnitzer's Expenses (to the extent not
otherwise payable pursuant to the preceding sentence) up to a maximum amount of
$1,000,000 upon demand if (A) the Offer is not consummated solely by reason of
the nonsatisfaction of one of the Offer Conditions set forth in Section 2 of
Annex A and (B) it was within the power of Proler by its action or inaction to
avoid the nonsatisfaction of such Offer Condition and (C) the Agreement was not
terminated by Proler pursuant to Section and (D) within twelve (12) months after
termination of this Agreement Proler consummates (or enters into a definitive
agreement with respect to and subsequently consummates) a Takeover Proposal that
was made before the termination of this Agreement. "Expenses" means documented
out-of-pocket fees and expenses incurred or paid by or on behalf

                                       30

of Schnitzer in connection with the Merger or the consummation of any of the
transactions contemplated by this Agreement, including without limitation all
HSR Act filing fees, fees and expenses of counsel, commercial banks, investment
banking firms, accountants, experts, environmental consultants, and other
consultants to Schnitzer.

      4.9 RIGHTS AGREEMENT. Except as provided in Section , Proler will not
redeem the Rights or amend (other than to delay the Distribution Date (as
defined in the Rights Agreement) or to render the Rights inapplicable to the
Merger) or terminate the Rights Agreement before the Effective Time unless
required to do so by order of a court of competent jurisdiction.

      4.10 PRESS RELEASES. No press releases or other public announcements
concerning the transactions contemplated by this Agreement may be made by any of
the parties without the prior written consent of each of the other parties,
which consent will not be unreasonably withheld; PROVIDED, HOWEVER, that nothing
in this provision will prevent a party from making such releases or
announcements as are necessary for a party to satisfy its legal obligations or
the requirements of the New York Stock Exchange or NASDAQ NMS, but in any such
case the affected party will promptly notify the other parties.

      4.11  INDEMNIFICATION AND INSURANCE.

            4.11.1 After the Effective Time, Proler will (and Schnitzer will as
long as it controls Proler) indemnify and hold harmless each of the current
directors of Proler (the "Indemnified Parties") in their capacities as directors
or officers to the full extent provided in Proler's Certificate of Incorporation
and Bylaws.

            4.11.2 Proler will not amend, and Schnitzer will not (as long as it
controls Proler) authorize or permit the amendment of, provisions of Proler's
Certificate of Incorporation or Bylaws providing for indemnification (as in
effect as of the date of this Agreement) in any manner adverse to the
Indemnified Parties for a period of six (6) years from and after the date of
this Agreement; provided, however, that such indemnification is subject to any
limitation imposed from time to time under applicable law.

            4.11.3 For six (6) years after the Closing, Proler will (and for so
long as it controls Proler, Schnitzer will cause Proler to) maintain policies of
officers' and directors' liability insurance maintained by Proler as of the date
of this Agreement (provided that Proler may substitute therefor policies of at
least the same coverage containing terms and conditions substantially
equivalent) with respect to the acts or omissions occurring before the Closing,
including but not limited to the transactions contemplated by this Agreement,
covering each of the Indemnified Parties currently covered by Proler's officers'
and directors' liability insurance policy, or who become covered by such policy
before the Closing.

            4.11.4  Any determination to be made as to whether any Indemnified 
Party has met any standard of conduct imposed by law or by Proler's Certificate
of Incorporation or
                                       31

Bylaws will be made by legal counsel reasonably acceptable to such Indemnified
Party and Schnitzer, retained at Proler's expense.

            4.11.5 In the event any Indemnified Party is or becomes involved in
any capacity in any action, proceeding, or investigation for which he has a
claim for indemnification against Proler (including, without limitation, the
transactions contemplated by this Agreement), Proler will, and Schnitzer will
(as long as it controls Proler) cause Proler to, pay as incurred such
Indemnified Party's legal and other expenses actually and reasonably incurred in
connection therewith upon receipt of an understanding by or on behalf of such
Indemnified Party to repay such amount if it is ultimately determined that he is
not entitled to be indemnified by Proler.

            4.11.6 The obligations pursuant to this Section will survive the
Merger and will continue in full force and effect for a period of six (6) years
from the Effective Time, provided that as to any claim for indemnification
asserted pursuant to this Section during such six-year period, such obligations
will remain in full force and effect until the final disposition of such claim.

            4.11.7 This Section is intended to benefit the Indemnified Parties,
their heirs, executors, and personal representatives and is binding on
successors and assigns of Sub, Schnitzer and Proler.

                                   ARTICLE 5

                    CONDITIONS TO THE PARTIES' OBLIGATIONS
                           TO CONSUMMATE THE MERGER

      5.1   MUTUAL CONDITIONS.  The obligations of each party to consummate the 
Merger are subject to the following conditions:

            5.1.1 GOVERNMENTAL AUTHORIZATIONS. Each of the parties will have
obtained all authorizations, consents, and approvals of all governmental
agencies and authorities required to be obtained in order to permit consummation
of the transactions contemplated by this Agreement, in a form satisfactory to
each of Proler, Sub, and Schnitzer in its reasonable discretion, and the waiting
period under the HSR Act will have expired or been terminated early.

            5.1.2 PROLER STOCKHOLDER APPROVAL. If necessary to approve the
Merger under applicable law, at a duly called and held Stockholders' Meeting,
acting in accordance with applicable provisions of DGCL and the Certificate of
Incorporation and Bylaws of Proler, the holders of at least a majority of the
issued and outstanding Shares of Proler Common Stock will have given Stockholder
Approval.

            5.1.3 NO PROHIBITIONS. There has not been promulgated or issued a
law, statute, rule, regulation, decree, order, injunction or ruling by any
Governmental Entity that remains in effect and prohibits, restrains, enjoins or
restricts the consummation of the Merger.

                                       32

            5.1.4 NO SUITS. No action, suit or other proceeding has been overtly
threatened or is pending against any party to this Agreement to prohibit,
restrain, enjoin, restrict or otherwise prevent the consummation of the
transactions contemplated by this Agreement.

            5.1.5 CONSUMMATION OF OFFER. Sub has purchased Shares pursuant to
the Offer; PROVIDED that this condition will be deemed satisfied if Sub fails to
purchase Shares pursuant to the Offer in violation of the terms of this
Agreement.

                                   ARTICLE 6

                                  TERMINATION

      6.1 TERMINATION BY SCHNITZER AND/OR PROLER. This Agreement may be
terminated without further liability at any time before the Closing Date:

            6.1.1 MUTUAL CONSENT.  By mutual consent of Schnitzer, Sub, and 
Proler; or

            6.1.2 DELAY IN HSR CLEARANCE. By either Schnitzer or Proler, if
clearance under the HSR Act is not received within 120 days after the filing of
the premerger notification and report form.

            6.1.3 INJUNCTION OR RESTRAINT. By either Schnitzer or Proler, if any
Governmental Entity has promulgated or issued a law, statute, rule, regulation,
decree, order, injunction, or ruling or taken any other action prohibiting,
restraining, enjoining, restricting or otherwise prohibiting the Offer or the
Merger that has become final and nonappealable.

            6.1.4 FAILURE OF OFFER. By Schnitzer or Proler if the Offer is
terminated or expires in accordance with its terms as the result of the failure
of any of the Offer Conditions without Sub having purchased any Shares pursuant
to the Offer; provided, however, that the right to terminate under this Section
is not available to any party whose failure to perform any of its covenants or
agreements under this Agreement results in the failure of any condition.

      6.2 TERMINATION BY SCHNITZER. Schnitzer, if not then in default, may
terminate this Agreement at any time before the Closing Date upon written notice
to Proler of the occurrence of any of the following:

            6.2.1 BREACH BY PROLER. If Proler breaches in any material respect
any of its representations or warranties or defaults in the observance or
performance of any of its covenants or agreements under this Agreement, except
for breaches or defaults which, individually or in the aggregate, would not have
a Material Adverse Effect with respect to Proler or Schnitzer or materially
impair the ability of the parties to consummate the transactions contemplated by
this Agreement.
                                       33

            6.2.2 WITHDRAWAL OF PROLER BOARD APPROVAL. If (i) the Board of
Directors of Proler or any committee thereof has withdrawn or modified in a
manner adverse to Schnitzer or Sub its approval or recommendation of the Merger
or this Agreement, or approved or recommended any Takeover Proposal, or (ii)
Proler has entered into a definitive agreement with respect to any Superior
Proposal in accordance with Section of this Agreement.

      6.3 TERMINATION BY PROLER. Proler, if not then in default, may terminate
this Agreement at any time before the Closing Date upon written notice to
Schnitzer of the occurrence of any of the following:

            6.3.1 BREACH BY SCHNITZER. A breach by Schnitzer in any material
respect of any of its representations or warranties or a default in the
observance or performance of any of its covenants or agreements under this
Agreement, except for breaches or defaults which, individually or in the
aggregate, would not have a Material Adverse Effect with respect to Proler or
Schnitzer or materially impair the ability of the parties to consummate the
transactions contemplated by this Agreement.

            6.3.2 PERMITTED TAKEOVER AGREEMENT. In connection with Proler
entering into a definitive agreement in accordance with Section , PROVIDED it
has complied with all provisions thereof, including the notice provisions
therein, and that it makes simultaneous payment of the Expenses and the
Termination Fee.

      6.4 PROCEDURE; EFFECT OF TERMINATION. If either Schnitzer or Proler elects
to terminate this Agreement pursuant to this Article , the terminating party
will promptly give written notice thereof to the other party. In the event of
termination pursuant to this Article , the parties will be released from all
liabilities and obligations under this Agreement, other than the obligations
under Section and liability for damages to the extent arising from a breach of
this Agreement before termination. The Confidentiality Agreement dated June 11,
1996 between Proler and Schnitzer (the "Confidentiality Agreement") is and will
remain until the Effective Time in full force and effect and will survive any
termination of this Agreement.

                                   ARTICLE 7

                              GENERAL PROVISIONS

      7.1 NONSURVIVAL OF REPRESENTATIONS, WARRANTIES AND AGREEMENTS. None of the
representations and warranties in this Agreement or in any instrument delivered
pursuant to this Agreement will survive the Effective Time. This Section will
not limit any covenant or agreement of the parties that by its terms
contemplates performance after the Effective Time of the Merger.

      7.2 FURTHER ACTION.  Proler, Sub, and Schnitzer will execute any documents
and take any additional action reasonably required to fully implement this
Agreement.
                                       34

      7.3 ENTIRE AGREEMENT. This Agreement and the Confidentiality Agreement
contain the entire agreement and understanding among Proler, Sub, and Schnitzer
regarding the subject matter hereof and thereof and supersede and replace all
prior or contemporaneous negotiations, representations, or agreements, written
or oral.

      7.4 ASSIGNMENT. This Agreement may not be assigned by any party without
the prior written consent of each of Proler and Schnitzer, which consent will
not unreasonably be withheld.

      7.5 BINDING EFFECT; NO THIRD PARTY BENEFIT. This Agreement will inure to
the benefit of and be binding upon each of the parties and their respective
successors and assigns, subject to the restrictions on assignment contained in
Section . Nothing express or implied in this Agreement is intended or will be
construed to confer upon or give to any Person other than the parties to this
Agreement any rights or remedies under or by reason of this Agreement or any
transaction contemplated by it, except with respect to Section .

      7.6 WAIVER. Failure of any party at any time to require performance of any
provision of this Agreement will not limit such party's right to enforce such
provision, nor will any waiver of any breach of any provision of this Agreement
constitute a waiver of any succeeding breach of such provision or a waiver of
such provision itself. Any waiver of any provision of this Agreement will be
effective only if set forth in writing and signed by the party to be bound.

      7.7 GOVERNING LAW. This Agreement will be governed and construed in
accordance with the laws of the state of Delaware.

      7.8 SEVERABILITY. If any term or provision of this Agreement or the
application thereof to any Person or circumstance is to any extent held to be
invalid or unenforceable, the remainder of this Agreement and the application of
such term or provision to Persons or circumstances other than those as to which
it is held invalid or unenforceable will not be affected thereby, and each term
or provision of this Agreement will be valid and enforceable to the fullest
extent permitted by law.

      7.9 TIME OF ESSENCE. Proler, Sub, and Schnitzer hereby acknowledge and
agree that time is strictly of the essence with respect to each and every term,
condition, obligation, and provision of this Agreement.

      7.10 COUNTERPARTS. This Agreement may be executed in counterparts, each of
which will be deemed an original, but all of which taken together will
constitute one and the same instrument, binding on the parties. If this
Agreement is executed in counterparts, each party will transmit by facsimile a
copy of the signed counterpart upon execution and will cause an executed
original counterpart to be transmitted by courier service to the other parties.

      7.11 AMENDMENTS. This Agreement may not be modified or amended except by
the written agreement of Proler, Sub, and Schnitzer. This Agreement may not be
terminated other
                                       35

than pursuant to Article except by the written agreement of Proler, Sub, and
Schnitzer. A party may waive one or more of its rights under this Agreement only
in a written instrument signed by the party.

      7.12 AUTHORITY. The person executing this Agreement on behalf of each
party warrants that she/he has the authority to execute this Agreement and to so
bind that party as provided in this Agreement.

      7.13 NOTICES. All notices or other communications required or permitted
under this Agreement must be in writing and must be personally delivered, sent
by registered or certified mail, postage prepaid, return receipt requested, or
sent by facsimile. Any notice, if mailed, will be deemed given when received;
any notice, if transmitted by facsimile, will be deemed given when transmitted
and electronically confirmed. Notices will be given to the following Persons:

      To Schnitzer:        Schnitzer Steel Industries, Inc.
                           3200 NW Yeon Avenue
                           Portland, OR  97210
                           Attention:  Robert W. Philip
                           Facsimile No.:  (503) 323-2793

      With a copy to:      The Schnitzer Group
                           3200 NW Yeon Avenue
                           Portland, OR  97210
                           Attention:  Anton U. Pardini
                           Facsimile No.:  (503) 299-2277

      To Proler:           Proler International Corp.
                           4265 San Felipe, Suite 900
                           Houston, TX  77027
                           Attention:  Bruce W. Wilkinson
                           Facsimile No.:  (713) 627-2737

      With a copy to:      Kathleen M. Kopp
                           Mayor, Day, Caldwell & Keeton, L.L.P.
                           700 Louisiana, Suite 1900
                           Houston, TX  77002
                           Facsimile No.:  (713) 225-7047

                                       36

                                    ARTICLE 8

                          DEFINITIONS

      The  following terms are defined in this Agreement  in  the
sections identified below:

          TERM                             DEFINITION SECTION

     "1988 Plan"                                  2.8

     "1994 Plan"                                  2.8

     "Agreement"                                  Preamble

     "Certificate of Merger"                      2.4

     "Certificates"                               2.7.2.2

     "Closing" and "Closing Date"                 2.9

     "Code"                                       3.1.14

     "Confidentiality Agreement"                  6.4

     "Contamination"                              3.1.13.1

     "Contracts"                                  3.1.8

     "Copyrights"                                 3.1.20

     "DGCL"                                       Recitals

     "Dissenting Stockholder"                     2.7.1.4

     "Dissenting Shares"                          2.7.1.4

     "DOJ"                                        4.4

     "Effective Time"                             2.4

     "Environmental Law"                          3.1.13.1

     "ERISA"                                      3.1.16

                                       37
  
     "ERISA Plans"                                3.1.16

     "Exchange Act"                               1.1(a)

     "Expenses"                                   4.8.2

     "Expiration Date"                            1.1(d)

     "FTC"                                        4.4

     "Governmental Entity"                        3.1.2(b)

     "Hazardous Substance"                        3.1.13.1

     "HSR Act"                                    4.4

     "ITC"                                        3.1.14.3

     "Indemnified Parties"                        4.11.1

     "Information Statement"                      3.1.6

     "Intellectual Property Assets"               3.1.20

     "Leases"                                     3.1.10

     "Licenses"                                   3.1.12

     "Marks"                                      3.1.20

     "Material Adverse Effect"                    Introduction to Article 3

     "Material Properties and Assets"             3.1.9

     "Merger"                                     Recitals

     "Merger Consideration"                       2.7.1.3

     "NOL"                                        3.1.14.3

     "Notice of Superior Proposal"                4.2.2

                                       38
  
   "Offer"                                      Recitals

     "Offer Conditions"                           1.1(a)

     "Offer Documents"                            1.1(c)

     "Offer Price"                                1.1(a)

     "Patents"                                    3.1.20

     "Paying Agent"                               2.7.2.1

     "Person"                                     2.7.2.4

     "Policies"                                   3.1.19

     "Proler"                                     Preamble

     "Proler Board"                               1.2(a)

     "Proler Entity," "Proler Entities"           Introduction to Article 3

     "Proler Returns"                             3.1.14

     "Proler SEC Documents"                       3.1.5

     "Proler Stock Plans"                         3.1.3

     "Proxy Statement"                            2.2(b)

     "RCRA"                                       3.1.13.2(b)

     "Rights"                                     Recitals

     "Rights Agreement"                           Recitals

     "Schedule 14D-1"                             1.1(c)

     "Schedule 14D-9"                             1.2(a)

     "Schnitzer"                                  Preamble

                                       39

     "SEC"                                        1.1(c)

     "Securities Act"                             3.1.5

     "Share," "Shares"                            2.7.1

     "Stockholder Approval"                       2.2(a)

     "Stockholders' Meeting"                      2.2(a)

     "Sub"                                        Preamble

     "Superior Proposal"                          4.2.2

     "Surviving Corporation"                      2.5

     "Taxes"                                      3.1.14.4

     "Takeover Proposal"                          4.2.1

     "Tendered Shares"                            1.1(d)

     "Termination Fee"                            4.8.2
                                      40

      IN WITNESS WHEREOF, the parties have executed this Agreement, effective
the day and year first written above.


SCHNITZER STEEL                     PROLER INTERNATIONAL CORP.
INDUSTRIES, INC.

By:/s/ ROBERT W. PHILIP                  By:/s/ Herman Proler
     (Signature)                               (Signature)

Name:  Robert W. Philip             Name:  Herman Proler
Title: President                    Title: Chairman of the Board


PIC ACQUISITION CORPORATION



By:/s/ ROBERT W. PHILIP  
     (Signature)         
                         
Name:  Robert W. Philip  
Title: President         
                                      41

                                    ANNEX A

                               OFFER CONDITIONS

      1. DEFINED TERMS. Unless otherwise defined in this Annex A, capitalized
terms that appear in this Annex A to the Agreement and Plan of Merger among
Schnitzer Steel Industries, Inc., Proler International Corp., and PIC
Acquisition Corporation have the meanings assigned in the Agreement.

      2. OFFER CONDITIONS. Notwithstanding any other provision of the Offer, the
obligation of Sub to accept for payment, and pay for, any Tendered Shares will
be subject only to the conditions (the "Offer Conditions," any or all of which
(except for (i) and (ii)) may be waived by Sub, in whole or in part, at any time
and from time to time) that:

      (i)   this Agreement has not been terminated;

      (ii)  the number of validly Tendered Shares immediately before the
            Expiration Date that have not been withdrawn, when added to the
            Shares already owned by Schnitzer or Sub, constitutes a majority of
            the then-outstanding Shares (determined on a fully diluted basis);

      (iii) there has not occurred (v) any general suspension of trading in, or
            limitation on prices for, securities on the New York Stock Exchange
            or in the U.S. over-the-counter market, (w) a declaration of a
            banking moratorium or any general suspension of payments in respect
            of banks in the United States, (x) any material limitation (whether
            or not mandatory) imposed by any governmental authority on the
            extension of credit by banks or other financial institutions in the
            United States, (y) commencement of war or armed hostilities between
            the United States and any foreign power or any insurrection or armed
            conflict involving the United States which makes it impracticable to
            conclude the acquisition of Proler, or (z) in the case of any of the
            foregoing existing at the time of the commencement of the Offer, a
            material acceleration or worsening thereof;

      (iv)  the applicable waiting period under the HSR Act has expired or been
            terminated before the Expiration Date;

      (v)   no statute, rule, regulation, judgment, order, decree, ruling,
            injunction or other action has been entered, promulgated or enforced
            by any Governmental Entity, and no action, proceeding or claim by
            any Governmental Entity that has a reasonable likelihood of success
            has been instituted, that purports, seeks, or threatens to (x)
            challenge, prohibit, restrain, enjoin or restrict in a material
            manner the purchase and sale of any Tendered Shares or the
            consummation of the Merger as contemplated by this Agreement, (y)
            impose material adverse terms or conditions (not set forth herein)
            upon the purchase and sale of any Tendered


                               ANNEX A - Page 1

            Shares or the consummation of the Merger as contemplated by this
            Agreement, (z) prohibit or materially limit or seek to prohibit or
            materially limit the ownership or operation by Schnitzer or Sub of
            all or a material portion of the business or assets of Proler and
            its subsidiaries, taken as a whole, or compel or seek to compel
            Schnitzer or Sub to dispose of or to hold separate all or a material
            portion of the business or assets of Proler and its subsidiaries,
            taken as a whole;

      (vi)  except as to matters disclosed in the Proler SEC Documents or
            included in the Schedules to this Agreement, there has been no
            change resulting in a Material Adverse Effect (or any development
            that, insofar as reasonably can be foreseen, is reasonably likely to
            result in any Material Adverse Effect) to Proler;

      (vii) (x) neither the Board of Directors of Proler nor any committee
            thereof has withdrawn or modified in a manner adverse to Schnitzer
            or Sub its approval or recommendation of the Offer, the Merger or
            this Agreement, or approved or recommended any Takeover Proposal and
            (y) Proler has not entered into any agreement with respect to any
            Superior Proposal in accordance with Section of this Agreement;

      (viii)all representations and warranties of Proler are true and correct,
            in each case as if such representation or warranty was made as of
            such time on or after the date of this Agreement, except (x) for
            those representations and warranties which address matters only as
            of a particular date (which must remain true and correct as of such
            date) and (y) for breaches of representations and warranties which,
            individually or in the aggregate, would not have a Material Adverse
            Effect with respect to Proler or Schnitzer or materially impair the
            ability of the parties to consummate the transactions contemplated
            by this Agreement;

      (ix)  Proler has not failed to perform any obligation or to comply with
            any agreement or covenant of Proler to be performed or complied with
            by it under this Agreement prior to consummation of the Offer,
            except for such nonperformance or failure of compliance which,
            individually or in the aggregate, would not have a Material Adverse
            Effect with respect to Proler or Schnitzer or materially impair the
            ability of the parties to consummate the transactions contemplated
            by this Agreement.

Schnitzer and Sub will not be required to consummate the Offer in the event any
of the foregoing conditions have not been satisfied, and such failure, in the
reasonable judgment of Schnitzer and Sub, in any case and regardless of the
circumstances (other than a breach by Schnitzer or Sub of the Agreement) causing
the failure of such condition(s) makes it inadvisable to proceed with the Offer
or its consummation.

                               ANNEX A - Page 2

                                    ANNEX B

                         AMENDMENT TO RIGHTS AGREEMENT

      THIS AMENDMENT, dated as of September 15, 1996, is between PROLER
INTERNATIONAL CORP., a Delaware corporation (the "Company"), and KEYCORP
SHAREHOLDER SERVICES, INC. (the "Rights Agent").

                                   RECITALS

      A.    Proler and the Rights Agent are parties to a Rights Agreement dated
as of February 28, 1996 (the "Rights Agreement").

      B. Schnitzer Steel Industries, Inc., an Oregon corporation ("Schnitzer),
PIC Acquisition Corporation, a Delaware corporation ("Sub"), and the Company
have entered into an Agreement and Plan of Merger (the "Merger Agreement")
pursuant to which Sub will commence an offer (the "Offer") to purchase all
outstanding shares of common stock of the Company and, following consummation of
the amended offer, the Company will merge with and into Sub (the "Merger"). The
Board of Directors of the Company has approved the Merger Agreement, the Offer
and the Merger.

      C. Pursuant to Section 26 of the Rights Agreement, the Board of Directors
of the Company has determined that an amendment to the Rights Agreement as set
forth herein is necessary and desirable to reflect the foregoing and the Company
and the Rights Agent desire to evidence such amendment in writing.

      Accordingly, the parties agree as follows:

      1. AMENDMENT OF SECTION 1(A).  Section 1(a) of the Rights Agreement is 
amended to add the following sentence at the end thereof

      "Notwithstanding anything in this Rights Agreement to the contrary,
      neither Schnitzer nor Sub shall be deemed to be an Acquiring Person solely
      by virtue of (i) the announcement or making of the Offer (as defined in
      the Merger Agreement), (ii) the acquisition of Common Stock pursuant to
      the Offer and the Merger (as defined in the Merger Agreement), (iii) the
      execution of the Merger Agreement or (iv) the consummation of the other
      transactions contemplated in the Merger Agreement."

       2. ADDITIONS TO SECTION 1.  The following subsections are added to 
Section 1 of the Rights Agreement:

                               ANNEX B - Page 1

      "(p) 'Merger Agreement' shall mean the Agreement and Plan of Merger dated
      as of September 15, 1996, among Schnitzer, Sub and the Company, as amended
      from time to time.

      (q) 'Schnitzer' shall mean Schnitzer Steel Industries Inc., an Oregon
      corporation."

      (r) 'Sub' shall mean PIC Acquisition Corporation, a Delaware corporation,
      which is a wholly owned subsidiary of Schnitzer, or any other subsidiary
      of Schnitzer that is substituted for Sub pursuant to the Merger
      Agreement."

      3.    AMENDMENT OF SECTION 3(A).  Section 3(a) of the Rights Agreement is
    amended to add the following sentence at the end thereof

      "Notwithstanding anything in this Rights Agreement to the contrary, a
      Distribution Date shall not be deemed to have occurred solely as the
      result of (i) the announcement or making of the Offer, (ii) the
      acquisition of Common Stock pursuant to the Offer and the Merger, (iii)
      the execution of the Merger Agreement or (iv) the other transactions
      contemplated in the Merger Agreement."

       4. AMENDMENT OF SECTION 11(A)(II)(B). Section 11(a)(ii)(B) of the Rights
Agreement is amended and restated to read as follows:

      "(B) any Person (other than the Company, any Subsidiary of the Company or
      any employee benefit plan of the Company or of any Subsidiary organized,
      appointed or established by the Company for or pursuant to the terms of
      any such plan) alone or together with its Affiliates and Associates, shall
      at any time after the Rights Dividend Declaration Date, become the
      Beneficial Owner of 30% or more of the shares of Common Stock then
      outstanding, unless the event causing the 30% threshold to be crossed is a
      transaction set forth in SECTION 13(a) hereof, is an acquisition of shares
      of Common Stock pursuant to the Offer and the Merger, or is an acquisition
      of shares of Common Stock pursuant to a tender offer or an exchange offer,
      made in the manner prescribed in Section 14(d) of the Exchange Act, for
      all outstanding shares of Common Stock (other than shares held by such
      Person and its Affiliates) that is, by its terms, held open for not less
      than 60 days and either (1) is at a price and on terms determined by at
      least a majority of the members of the Board of Directors who are not
      officers of the Company, or who are not nominees, representatives,
      Affiliates or Associates of the Person making such offer, after receiving
      advice from one or more investment banking firms, to be (a) at a price
      that is fair to the stockholders (taking into account all factors which
      the Board of Directors of the Company deem relevant including, without
      limitation, prices which could reasonably be achieved if the Company or
      its assets were sold on an orderly basis designed to realize maximum
      value) and (b) otherwise in the best interests of the Company and its
      stockholders,
                            ANNEX B - Page 2

      or (2) is for cash and (i) causes such Person, together with all
      Affiliates and Associates of such Person, to be the Beneficial Owner of
      80% or more of the Common Stock then outstanding and (ii) is followed,
      within 90 days, by the completion of a merger or other business
      combination in which all remaining stockholders of the Company (other than
      the Person making such offer) receive cash consideration in a per share
      amount at least equal to the highest per share amount paid in connection
      with such offer; or"

       5.   AMENDMENT OF SECTION 13.  Section 13 of the Rights Agreement is
    amended to add the following sentence at the end thereof:

       "Notwithstanding anything in this Rights Agreement to the contrary, (i)
      the announcement or making of the Offer, (ii) the acquisition of Common
      Stock pursuant to the Offer and the Merger, (iii) the execution of the
      Merger Agreement or (iv) the consummation of the other transactions
      contemplated in the Merger Agreement shall not be deemed to be a Section
      13 Event and shall not cause the Rights to be adjusted or exercisable in
      accordance with Section 13."

       6. EFFECTIVENESS. This Amendment shall be deemed effective as of
September 15, 1996 as if executed on such date. Except as amended hereby, the
Rights Agreement shall remain in full force and effect and shall be otherwise
unaffected hereby.

      7. MISCELLANEOUS. This Amendment shall be deemed to be a contract made
under the laws of the State of Delaware and for all purposes shall be governed
by and construed in accordance with the laws of such state applicable to
contracts to be made and performed entirely within such state. This Amendment
may be executed in any number of counterparts, each of such counterparts shall
for all purposes be deemed to be an original, and all such counterparts shall
together constitute but one and the same instrument. If any provision, covenant
or restriction of this Amendment is held by a court of competent jurisdiction or
other authority to be invalid, illegal or unenforceable, the remainder of the
terms, provisions, covenants and restrictions of this Amendment shall remain in
full force and effect and shall in no way be effected, impaired or invalidated.

                               ANNEX B - Page 3

      EXECUTED as of the date set forth above.


Attest:                             PROLER INTERNATIONAL CORP.

Name:                               Name:
Title:                              Title:


Attest:                             KEYCORP SHAREHOLDER SERVICES, INC.



Name:                               Name:
Title:                              Title:

                               ANNEX B - Page 4





                                                                       EXHIBIT 4
                         AMENDMENT TO RIGHTS AGREEMENT


      THIS AMENDMENT, dated as of September 15, 1996, is between PROLER
INTERNATIONAL CORP., a Delaware corporation (the "Company"), and KEYCORP
SHAREHOLDER SERVICES, INC. (the "Rights Agent").

                                   RECITALS

      A. Proler and the Rights Agent are parties to a Rights Agreement dated as
of February 28, 1996 (the "Rights Agreement").

      B. Schnitzer Steel Industries, Inc., an Oregon corporation ("Schnitzer"),
PIC Acquisition Corporation, a Delaware corporation ("Sub"), and the Company
have entered into an Agreement and Plan of Merger (the "Merger Agreement")
pursuant to which Sub will commence an offer (the "Offer") to purchase all
outstanding shares of common stock of the Company and, following consummation of
the amended offer, the Company will merge with and into Sub (the "Merger"). The
Board of Directors of the Company has approved the Merger Agreement, the Offer
and the Merger.

      C. Pursuant to Section 26 of the Rights Agreement, the Board of Directors
of the Company has determined that an amendment to the Rights Agreement as set
forth herein is necessary and desirable to reflect the foregoing and the Company
and the Rights Agent desire to evidence such amendment in writing.

      Accordingly, the parties agree as follows:

      1. AMENDMENT OF SECTION 1(A). Section 1(a) of the Rights Agreement is
amended to add the following sentence at the end thereof:

      "Notwithstanding anything in this Rights Agreement to the contrary,
      neither Schnitzer nor Sub shall be deemed to be an Acquiring Person solely
      by virtue of (i) the announcement or making of the Offer (as defined in
      the Merger Agreement), (ii) the acquisition of Common Stock pursuant to
      the Offer and the Merger (as defined in the Merger Agreement), (iii) the
      execution of the Merger Agreement or (iv) the consummation of the other
      transactions contemplated in the Merger Agreement."

      2. ADDITIONS TO SECTION 1. The following subsections are added to Section
1 of the Rights Agreement:

      "(p) `Merger Agreement' shall mean the Agreement and Plan of Merger dated
      as of September 15, 1996, among Schnitzer, Sub and the Company, as amended
      from time to time.

<PAGE>

      "(q) `Schnitzer' shall mean Schnitzer Steel Industries Inc., an Oregon
      corporation."

      "(r) `Sub' shall mean PIC Acquisition Corporation, a Delaware corporation,
      which is a wholly owned subsidiary of Schnitzer, or any other subsidiary
      of Schnitzer that is substituted for Sub pursuant to the Merger
      Agreement."

      3. AMENDMENT OF SECTION 3(A). Section 3(a) of the Rights Agreement is
amended to add the following sentence at the end thereof:

      "Notwithstanding anything in this Rights Agreement to the contrary, a
      Distribution Date shall not be deemed to have occurred solely as the
      result of (i) the announcement or making of the Offer, (ii) the
      acquisition of Common Stock pursuant to the Offer and the Merger, (iii)
      the execution of the Merger Agreement or (iv) the other transactions
      contemplated in the Merger Agreement."

      4. AMENDMENT OF SECTION 11(A)(II)(B). Section 11(a)(ii)(B) of the Rights
Agreement is amended and restated to read as follows:

      "(B) any Person (other than the Company, any Subsidiary of the Company,
      any employee benefit plan of the Company or of any Subsidiary organized,
      appointed or established by the Company for or pursuant to the terms of
      any such plan) alone or together with its Affiliates and Associates, shall
      at any time after the Rights Dividend Declaration Date, become the
      Beneficial Owner of 30% or more of the shares of Common Stock then
      outstanding, unless the event causing the 30% threshold to be crossed is a
      transaction set forth in Section 13(a) hereof, is an acquisition of shares
      of Common Stock pursuant to the Offer and the Merger, or is an acquisition
      of shares of Common Stock pursuant to a tender offer or an exchange offer,
      made in the manner prescribed in Section 14(d) of the Exchange Act, for
      all outstanding shares of Common Stock (other than shares held by such
      Person and its Affiliates) that is, by its terms, held open for not less
      than 60 days and either (1) is at a price and on terms determined by at
      least a majority of the members of the Board of Directors who are not
      officers of the Company, or who are not nominees, representatives,
      Affiliates or Associates of the Person making such offer, after receiving
      advice from one or more investment banking firms, to be (a) at a price
      that is fair to the stockholders (taking into account all factors which
      the Board of Directors of the Company deem relevant including, without
      limitation, prices which could reasonable be achieved if the Company or
      its assets were sold on an orderly basis designed to realize maximum
      value) and (b) otherwise in the best interests of the Company and its
      stockholders, or (2) is for cash and (I) causes such Person, together with
      all Affiliates and Associates of such Person, to be the Beneficial Owner
      of 80% or more of the Common Stock then outstanding and (II) is followed,
      within 90 days, by the completion of a merger or other business
      combination in which all remaining stockholders of the 

                                       2

      Company (other than the Person making such offer) receive cash
      consideration in a per share amount at least equal to the highest per
      share amount paid in connection with such offer; or"

      5. AMENDMENT OF SECTION 13. Section 13 of the Rights Agreement is amended
to add the following sentence at the end thereof:

      "Notwithstanding anything in this Rights Agreement to the contrary, (i)
      the announcement or making of the Offer, (ii) the acquisition of Common
      Stock pursuant to the Offer and the Merger, (iii) the execution of the
      Merger Agreement or (iv) the consummation of the other transactions
      contemplated in the Merger Agreement shall not be deemed to be a Section
      13 Event and shall not cause the Rights to be adjusted or exercisable in
      accordance with Section 13."

      6. EFFECTIVENESS. This Amendment shall be deemed effective as of September
15, 1996 as if executed on such date. Except as amended hereby, the Rights
Agreement shall remain in full force and effect and shall be otherwise
unaffected hereby.

      7. MISCELLANEOUS. This Amendment shall be deemed to be a contract made
under the laws of the State of Delaware and for all purposes shall be governed
by and construed in accordance with the laws of such state applicable to
contracts to be made and performed entirely within such state. This Amendment
may be executed in any number of counterparts, each of such counterparts shall
for all purposes be deemed to be an original, and all such counterparts shall
together constitute but one and the same instrument. If any provision, covenant
or restriction of this Amendment is held by a court of competent jurisdiction or
other authority to be invalid, illegal or unenforceable, the remainder of the
terms, provisions, covenants and restrictions of this Amendment shall remain in
full force and effect and shall in no way be effected, impaired or invalidated.

      EXECUTED as of the date set forth above.

                           PROLER INTERNATIONAL CORP.


                           Name:/s/ HERMAN PROLER
                           Title: CHAIRMAN OF THE BOARD



                           KEYCORP SHAREHOLDER SERVICES, INC.


                           Name:/s/ BARBARA A. SHEPHERD
                           Title: VICE PRESIDENT

                                       3


                                                                      EXHIBIT 99
JOINT NEWS RELEASE
                                   CONTACTS

            SCHNITZER STEEL:                    PROLER:
            TOM ZELENKA                         MICHAEL LOY
            (503) 323-2821                      (713) 963-5904

FOR IMMEDIATE RELEASE

                  SCHNITZER STEEL INDUSTRIES, INC. TO ACQUIRE
             PROLER INTERNATIONAL CORP. THROUGH CASH TENDER OFFER


PORTLAND, OREGON; HOUSTON, TEXAS: September 16, 1996 - Schnitzer Steel
Industries, Inc. (NASDAQ: SCHN) and Proler International Corp. (NYSE: PS) today
announced the signing of a definitive agreement for the acquisition of Proler by
Schnitzer. The agreement calls for Schnitzer, through a subsidiary, to commence
a cash tender offer for all of the outstanding shares of Proler within five days
at a cash price of $7.50 per share. Upon completion of the tender offer, Proler
will become a wholly owned Schnitzer subsidiary through a cash merger at the
same price per share. Proler has approximately 4.7 million shares outstanding,
making the value of the merger about $35 million.

Schnitzer's tender offer will be conditioned on at least a majority of Proler's
outstanding shares, on a fully diluted basis, being validly tendered and not
withdrawn prior to expiration of the offer. The expiration date of the offer
will be twenty business days following the commencement, unless the offer is
extended. The tender offer and merger are subject to expiration or termination
of the applicable waiting period under the Hart-Scott-Rodino Antitrust
Improvements Act of 1976 and other customary conditions. The tender offer and
merger are not contingent upon financing.

"We are very excited about this transaction," stated Robert Philip, president of
Schnitzer. "This merger continues our strategy to grow the company through
selective, additive acquisitions. Proler, through its joint ventures, is one of
the nation's largest exporters of ferrous scrap. We believe that this
combination of our talents and operations will benefit not only both of the
companies but the scrap industry as well. The Schnitzer and Proler families have
known each other for many years; we are pleased that the Prolers have entrusted
us to carry on their proud tradition of being a leader in scrap recycling."

"We have given this transaction thorough and careful consideration," said Herman
Proler, chairman of the board of Proler, "and the Proler board of directors
shares my belief that it is in the best interest of the Company and the
Company's shareholders. The Schnitzers have always been very good operators, and
we have great respect for their team."

                                       1

Proler is being advised by J. C. Bradford & Co. and Chase Securities Inc.

Schnitzer operates one of the largest scrap recycling businesses in the Western
United States. The Company supplies ferrous scrap to Asian and domestic steel
producers through its scrap collection, processing and deep water facilities
located in Oakland, California; Portland, Oregon; and Tacoma, Washington. The
Company also operates collection and processing facilities in Eugene, Bend,
White City and Grants Pass, Oregon; and Sacramento and Fresno, California.
Schnitzer's subsidiary, Cascade Steel Rolling Mills, Inc. (Steel Operations),
operates the only vertically integrated mini-mill in the Western United States
which can obtain its entire scrap requirements from its own scrap operations.
Cascade's steel mini-mill in McMinnville, Oregon manufactures rebar, merchant
bar, fence posts, special sections and grape stakes. In addition, Cascade
maintains mill depots in Union City and El Monte, California.

Proler is an environmental services company involved in the recovery and
recycling of scrap metals and industrial wastes to produce high-quality,
commercial products. Through joint ventures, Proler exports ferrous scrap to
predominantly foreign markets from scrap collection, processing and deep water
facilities located in Los Angeles, California; Providence, Rhode Island;
Everett, Massachusetts; and Jersey City, New Jersey. Proler's joint ventures
operate additional scraps collection and processing facilities in Colton,
Lynwood, Irwindale, Pomona and Sun Valley, California; Phoenix, Arizona;
Manchester, New Hampshire; Portland, Maine; and Springfield and Worcester,
Massachusetts.

                                       2


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