ASARCO INC
8-K, 1999-10-06
PRIMARY SMELTING & REFINING OF NONFERROUS METALS
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                     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



                              OCTOBER 5, 1999
              Date of Report (Date of Earliest Event Reported)


                            ASARCO INCORPORATED
           (Exact name of Registrant as specified in its charter)


      DELAWARE                      1-164                     13-492440
(State or Other Jurisdiction    (IRS Employer Number)   (Identification No.)
Incorporation or Organization)


180 MAIDEN LANE, NEW YORK, NEW YORK                            10038
(Address of Principal Executive Office)                      (Zip Code)


                               (212) 510-2000
            (Registrant's telephone number, including area code)


                               NOT APPLICABLE
       (Former Name or Former Address, if Changed Since Last Report)



ITEM 5.  OTHER EVENTS.

      On October 5, 1999, ASARCO Incorporated ("ASARCO"), Phelps Dodge
Corporation and AAV Corporation entered into an Agreement and Plan of
Merger, dated as of October 5, 1999 (the "Merger Agreement"), a copy of
which is attached hereto as Exhibit 99.1 and incorporated herein by
reference.

      In addition, on October 6, 1999, ASARCO issued a press release
relating to the Merger Agreement, a copy of which is attached hereto as
Exhibit 99.2 and incorporated herein by reference.

ITEM 7.     FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION
            AND EXHIBITS.

            (c)   Exhibits

                  99.1  Agreement and Plan of Merger, dated as of October
                        5, 1999, among ASARCO Incorporated, Phelps Dodge
                        Corporation and AAV Corporation.

                  99.2  Press Release of ASARCO Incorporated, dated October
                        6, 1999.



                              SIGNATURE


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



                            ASARCO INCORPORATED


                              By:  /s/ Francis R. McAllister
                                   _______________________________
                                   Name: Francis R. McAllister
                                   Title: Chairman and Chief Executive Officer


Date:  October 6, 1999


                            EXHIBIT INDEX


EXHIBIT NO.                   DESCRIPTION                         PAGE NO.

99.1                          Agreement and Plan of Merger, dated
                              as of October 5, 1999, among ASARCO
                              Incorporated, Phelps Dodge Corporation and
                              AAV Corporation.

99.2                          Press Release of ASARCO
                              Incorporated, dated October 5, 1999.






                        AGREEMENT AND PLAN OF MERGER


                                   among


                          PHELPS DODGE CORPORATION

                              AAV CORPORATION

                                    and

                            ASARCO INCORPORATED



                        Dated as of October 5, 1999






                             TABLE OF CONTENTS

                                                                        Page
                                                                        ----
                                  ARTICLE I
                              THE ASARCO OFFER

 Section 1.1    The ASARCO Offer . . . . . . . . . . . . . . . . . . . . . 2
 Section 1.2    ASARCO Elections . . . . . . . . . . . . . . . . . . . . . 3
 Section 1.3    ASARCO Action  . . . . . . . . . . . . . . . . . . . . . . 5
 Section 1.4    Directors  . . . . . . . . . . . . . . . . . . . . . . . . 6

                                 ARTICLE II
                         THE ASARCO MERGER; CLOSING

 Section 2.1    The ASARCO Merger  . . . . . . . . . . . . . . . . . . . . 7
 Section 2.2    Closing  . . . . . . . . . . . . . . . . . . . . . . . . . 7
 Section 2.3    Effective Time . . . . . . . . . . . . . . . . . . . . . . 8
 Section 2.4    Effects of the ASARCO Merger . . . . . . . . . . . . . . . 8
 Section 2.5    Directors and Officers . . . . . . . . . . . . . . . . . . 8

                                 ARTICLE III
                 EFFECT OF THE ASARCO MERGER ON THE STOCK OF
                     ASARCO; EXCHANGE  OF  CERTIFICATES

 Section 3.1    Effect on ASARCO Stock and SubA Stock  . . . . . . . . . . 9
 Section 3.2    Exchange of Certificates . . . . . . . . . . . . . . . .  11

                                 ARTICLE IV
                       REPRESENTATIONS AND WARRANTIES

 Section 4.1    Organization, Qualification, Etc.  . . . . . . . . . . .  15
 Section 4.2    Capital Stock  . . . . . . . . . . . . . . . . . . . . .  17
 Section 4.3    Corporate Authority Relative to this Agreement . . . . .  18
 Section 4.4    Non-Contravention; Consents and Approvals  . . . . . . .  19
 Section 4.5    Reports and Financial Statements . . . . . . . . . . . .  20
 Section 4.6    Environmental Matters. . . . . . . . . . . . . . . . . .  21
 Section 4.7    Employee Benefit Plans; ERISA. . . . . . . . . . . . . .  23
 Section 4.8    Information Statement; Registration Statement;
                  Other Information  . . . . . . . . . . . . . . . . . .  27
 Section 4.9    ASARCO Rights Plan . . . . . . . . . . . . . . . . . . .  27
 Section 4.10   Tax Matters  . . . . . . . . . . . . . . . . . . . . . .  28
 Section 4.11   Opinion of Financial Advisors  . . . . . . . . . . . . .  29
 Section 4.12   Required Vote  . . . . . . . . . . . . . . . . . . . . .  30
 Section 4.13   Absence of Certain Changes . . . . . . . . . . . . . . .  30
 Section 4.14   No Undisclosed Material Liabilities  . . . . . . . . . .  32
 Section 4.15   Labor Relations  . . . . . . . . . . . . . . . . . . . .  32
 Section 4.16   No Prior Activities  . . . . . . . . . . . . . . . . . .  32

                                  ARTICLE V
                          COVENANTS AND AGREEMENTS

 Section 5.1    Conduct of Business Pending the Effective Time . . . . .  33
 Section 5.2    Investigation  . . . . . . . . . . . . . . . . . . . . .  35
 Section 5.3    Shareholder Approvals and Other Cooperation  . . . . . .  36
 Section 5.4    Affiliate Agreements . . . . . . . . . . . . . . . . . .  39
 Section 5.5    ASARCO Employee Stock Options, Incentive and
                  Benefit Plans  . . . . . . . . . . . . . . . . . . . . 39
 Section 5.6    Filings; Other Action  . . . . . . . . . . . . . . . . . 41
 Section 5.7    Further Assurances . . . . . . . . . . . . . . . . . . .  43
 Section 5.8    Takeover Statute . . . . . . . . . . . . . . . . . . . .  43
 Section 5.9    No Solicitation by ASARCO  . . . . . . . . . . . . . . .  43
 Section 5.10   Public Announcements . . . . . . . . . . . . . . . . . .  45
 Section 5.11   Indemnification and Insurance  . . . . . . . . . . . . .  45
 Section 5.12   Accountants' "Comfort" Letters . . . . . . . . . . . . .  46
 Section 5.13   Additional Reports . . . . . . . . . . . . . . . . . . .  46
 Section 5.14   Disclosure Schedule Supplements  . . . . . . . . . . . .  47
 Section 5.15   Certain Litigation.  . . . . . . . . . . . . . . . . . .  47
 Section 5.16   Shareholder Litigation . . . . . . . . . . . . . . . . .  47
 Section 5.17   Section 16(b)  . . . . . . . . . . . . . . . . . . . . .  47
 Section 5.18   Change of Control Agreements . . . . . . . . . . . . . .  48

                                 ARTICLE VI
                       CONDITIONS TO THE ASARCO MERGER

 Section 6.1    Conditions to Each Party's Obligation to Effect
                  the ASARCO Merger  . . . . . . . . . . . . . . . . . .  48

                                 ARTICLE VII
                      TERMINATION, WAIVER AND AMENDMENT

 Section 7.1    Termination or Abandonment . . . . . . . . . . . . . . .  49
 Section 7.2    Termination by Parent  . . . . . . . . . . . . . . . . .  50
 Section 7.3    Termination by ASARCO  . . . . . . . . . . . . . . . . .  50
 Section 7.4    Effect of Termination  . . . . . . . . . . . . . . . . .  50
 Section 7.5    Termination Fee.   . . . . . . . . . . . . . . . . . . .  51
 Section 7.6    Amendment or Supplement  . . . . . . . . . . . . . . . .  51
 Section 7.7    Extension of Time, Waiver, Etc.  . . . . . . . . . . . .  52

                                ARTICLE VIII
                               MISCELLANEOUS

 Section 8.1    No Survival of Representations and Warranties  . . . . .  52
 Section 8.2    Expenses . . . . . . . . . . . . . . . . . . . . . . . .  52
 Section 8.3    Counterparts; Effectiveness  . . . . . . . . . . . . . .  53
 Section 8.4    Governing Law  . . . . . . . . . . . . . . . . . . . . .  53
 Section 8.5    Notices  . . . . . . . . . . . . . . . . . . . . . . . .  53
 Section 8.6    Assignment; Binding Effect . . . . . . . . . . . . . . .  54
 Section 8.7    Severability . . . . . . . . . . . . . . . . . . . . . .  54
 Section 8.8    Enforcement of Agreement . . . . . . . . . . . . . . . .  54
 Section 8.9    Entire Agreement; Third-Party Beneficiaries  . . . . . .  55
 Section 8.10   Headings . . . . . . . . . . . . . . . . . . . . . . . .  55
 Section 8.11   Definitions  . . . . . . . . . . . . . . . . . . . . . .  55
 Section 8.12   Finders or Brokers . . . . . . . . . . . . . . . . . . .  55


                              LIST OF EXHIBITS

      Exhibit A      Form of ASARCO Affiliate Letter



                           INDEX OF DEFINED TERMS

 Defined Term                                                       Section
 ------------                                                       -------
 affiliates  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.11
 Aggregate ASARCO Merger Cash Consideration  . . . . . . . . . .  3.1(b)(i)
 Aggregate ASARCO Merger Stock Consideration . . . . . . . . .  3.1(b)(iii)
 Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction
 Antitrust Laws  . . . . . . . . . . . . . . . . . . . . . . . .  5.6(b)(i)
 ASARCO  . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction
 ASARCO Acquisition Agreement  . . . . . . . . . . . . . . . . . . . 5.9(b)
 ASARCO Award  . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5(b)
 ASARCO Board  . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3(a)
 ASARCO Cash Consideration . . . . . . . . . . . . . . . . . . Introduction
 ASARCO Cash Election Shares . . . . . . . . . . . . . . . . . . . . 1.2(a)
 ASARCO Cash Proration Factor  . . . . . . . . . . . . . . . . .  1.2(b)(i)
 ASARCO Certificates . . . . . . . . . . . . . . . . . . . . . . . . 3.1(b)
 ASARCO Common Stock . . . . . . . . . . . . . . . . . . . . . . . . 1.1(a)
 ASARCO Designees  . . . . . . . . . . . . . . . . . . . . . . . . . 1.4(a)
 ASARCO Disclosure Schedule  . . . . . . . . . . . . . . . . . . Article IV
 ASARCO Employees  . . . . . . . . . . . . . . . . . . . . . . . . . 5.5(e)
 ASARCO Indemnified Parties  . . . . . . . . . . . . . . . . . . .  5.11(a)
 ASARCO Incorporated . . . . . . . . . . . . . . . . . . . . . . . . 2.4(b)
 ASARCO Maximum Cash Consideration . . . . . . . . . . . . . . . . . 1.2(b)
 ASARCO Maximum Stock Consideration  . . . . . . . . . . . . . . . . 1.2(c)
 ASARCO Merger . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1(a)
 ASARCO Merger Cash Amount . . . . . . . . . . . . . . . . . . . 3.1(b)(ii)
 ASARCO Merger Consideration . . . . . . . . . . . . . . . . . . . . 3.1(b)
 ASARCO Merger Exchange Ratio  . . . . . . . . . . . . . . . . . . . 3.1(b)
 ASARCO Merger Stock Amount  . . . . . . . . . . . . . . . . . . 3.1(b)(iv)
 ASARCO Non Electing Proration Factor  . . . . . . . . . . . .  1.2(d)(iii)
 ASARCO Non Electing Shares  . . . . . . . . . . . . . . . . . . . . 1.2(a)
 ASARCO Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.9(a)
 ASARCO Offer  . . . . . . . . . . . . . . . . . . . . . . . . Introduction
 ASARCO Option Plans . . . . . . . . . . . . . . . . . . . . . . . . 5.5(a)
 ASARCO Policy . . . . . . . . . . . . . . . . . . . . . . . . . .  5.11(b)
 ASARCO SAR  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5(a)
 ASARCO Shareholder Approval . . . . . . . . . . . . . . . . . . .  4.12(b)
 ASARCO Shareholders Meeting . . . . . . . . . . . . . . . . .  5.3(c)(iii)
 ASARCO Stock Consideration  . . . . . . . . . . . . . . . . . Introduction
 ASARCO Stock Election Shares  . . . . . . . . . . . . . . . . . . . 1.2(a)
 ASARCO Stock Options  . . . . . . . . . . . . . . . . . . . . . . . 5.5(a)
 ASARCO Stock Proration Factor . . . . . . . . . . . . . . . . .  1.2(c)(i)
 ASARCO Surviving Corporation  . . . . . . . . . . . . . . . . . . . 2.1(a)
 ASARCO Takeover Proposal  . . . . . . . . . . . . . . . . . . . . . 5.9(a)
 ASARCO Termination Fee  . . . . . . . . . . . . . . . . . . . . . . .  7.5
 CERCLA  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.6(d)
 Certificates  . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2(c)
 Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2.2
 Closing Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2.2
 Code  . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction
 Combination . . . . . . . . . . . . . . . . . . . . . . . . . Introduction
 Common Shares Trust . . . . . . . . . . . . . . . . . . . . .  3.2(e)(iii)
 control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.11
 Current Representing Party Group  . . . . . . . . . . . . . . . .  4.10(a)
 DGCL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1(a)
 Effective Time  . . . . . . . . . . . . . . . . . . . . . . . . . . .  2.3
 Employee Benefit Plan . . . . . . . . . . . . . . . . . . . . .  4.7(g)(i)
 Encumbrance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1(c)
 Environmental Claim . . . . . . . . . . . . . . . . . . . . . .  4.6(d)(i)
 Environmental Law . . . . . . . . . . . . . . . . . . . . . . . 4.6(d)(ii)
 Environmental Permits . . . . . . . . . . . . . . . . . . . . . . . 4.6(a)
 ERISA . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4.7(g)(iii)
 ERISA Affiliate . . . . . . . . . . . . . . . . . . . . . . . . 4.7(g)(iv)
 Excess Shares . . . . . . . . . . . . . . . . . . . . . . . . . 3.2(e)(ii)
 Exchange Act  . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3(b)
 Exchange Agent  . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2(a)
 Exchange Fund . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2(a)
 Expiration Date . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1(a)
 Foreign Plan  . . . . . . . . . . . . . . . . . . . . . . . . . 4.7(g)(ii)
 GAAP  . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction
 Governmental Entity . . . . . . . . . . . . . . . . . . . . . . . . 4.4(a)
 Hazardous Materials . . . . . . . . . . . . . . . . . . . . .  4.6(d)(iii)
 HSR Act . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5.6(b)(i)
 interested shareholder  . . . . . . . . . . . . . . . . . . . . . . 4.3(b)
 IRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.7(b)
 Information Statement . . . . . . . . . . . . . . . . . . . . . . . .  4.8
 Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.4(a)
 Material Adverse Effect . . . . . . . . . . . . . . . . . . . . . . 4.1(a)
 Minimum Condition . . . . . . . . . . . . . . . . . . . . . . . . . 1.1(a)
 Multiemployer Plan  . . . . . . . . . . . . . . . . . . . . . . . . 4.7(a)
 NJBCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1(a)
 NYSE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2(e)(ii)
 Offer Documents . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1(a)
 Parent  . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction
 Parent Certificates . . . . . . . . . . . . . . . . . . . . . . . . 3.2(a)
 Parent Common Stock . . . . . . . . . . . . . . . . . . . . . . . . 1.1(a)
 Parent Disclosure Schedule  . . . . . . . . . . . . . . . . . . Article IV
 Parent Shareholder Approval . . . . . . . . . . . . . . . . . . .  4.12(a)
 Parent Shareholders Meeting . . . . . . . . . . . . . . . . . . 5.3(c)(ii)
 Past Representing Party Group . . . . . . . . . . . . . . . . . .  4.10(a)
 person  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.11
 Phelps Dodge Proxy Statement  . . . . . . . . . . . . . . . . . 5.3(c)(ii)
 Plan  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4.7(g)(iii)
 Registration Statement  . . . . . . . . . . . . . . . . . . . .  5.3(a)(i)
 Representing Party  . . . . . . . . . . . . . . . . . . . . . . Article IV
 Representing Party Affiliated Group . . . . . . . . . . . . . . .  4.10(a)
 Representing Party Agreements . . . . . . . . . . . . . . . . . . . 4.4(a)
 Representing Party's Disclosure Schedule  . . . . . . . . . . . Article IV
 Required Statutory Approvals  . . . . . . . . . . . . . . . . . . . 4.4(b)
 Required Third Party Consents . . . . . . . . . . . . . . . . . . . 4.4(b)
 Schedule 14d-1  . . . . . . . . . . . . . . . . . . . . . . . . . . .  4.8
 Schedule 14d-9  . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3(b)
 SEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5(a)
 SEC Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4.5
 Securities Act  . . . . . . . . . . . . . . . . . . . . . . . . . . .  4.5
 Share Issuance  . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3(a)
 Significant Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . 8.11
 SubA  . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction
 Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.11
 Tax Certificates  . . . . . . . . . . . . . . . . . . . . . . .  5.3(a)(v)
 Tax Return  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.10
 Taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.10
 Termination Date  . . . . . . . . . . . . . . . . . . . . . . . . . .  5.1





           THIS AGREEMENT AND PLAN OF MERGER, dated as of October 5, 1999
 (the "Agreement"), among PHELPS DODGE CORPORATION, a New York corporation
 ("Parent"), AAV CORPORATION, a Delaware corporation ("SubA") and ASARCO
 INCORPORATED, a New Jersey corporation ("ASARCO");

           WHEREAS, Parent and ASARCO desire to combine their respective
 businesses upon the terms and subject to the conditions in this Agreement
 (the "Combination");

           WHEREAS, (i) Parent is a corporation organized and existing under
 the laws of the State of New York; and (ii) ASARCO is a corporation
 organized and existing under the laws of the State of New Jersey;

           WHEREAS, Parent has formed SubA, a wholly owned subsidiary of
 Parent, and all the outstanding capital stock of SubA is owned by Parent;

           WHEREAS, the Board of Directors of each of Parent and ASARCO
 deems it advisable and in the best interests of their shareholders to
 effect the Combination by causing ASARCO to become a subsidiary of Parent
 pursuant to the ASARCO Merger as provided for in this Agreement;

           WHEREAS, in furtherance of the Combination, Parent has caused
 SubA to commence an exchange offer, which Parent shall cause SubA to amend
 in accordance with the terms of this Agreement (as so amended, the "ASARCO
 Offer") to acquire all of the issued and outstanding shares of ASARCO
 Common Stock, for either $29.50 per share, net to the seller in cash,
 without interest (the "ASARCO Cash Consideration") or 0.50266 of a share of
 Parent Common Stock (the "ASARCO Stock Consideration"), subject to the
 election and proration provisions of this Agreement and to the terms and
 conditions of this Agreement and the ASARCO Offer;

           WHEREAS, the parties desire to make certain representations,
 warranties, covenants and agreements in connection with the Combination and
 also to prescribe various conditions to the Combination;

           WHEREAS, for U.S. federal income tax purposes, it is intended
 that  the ASARCO Merger will qualify as a transaction described in Section
 368(a) of the Internal Revenue Code of 1986, as amended (the "Code");

           WHEREAS, for financial accounting purposes, it is intended that
 the transactions contemplated by this Agreement will be accounted for as a
 purchase transaction in accordance with United States generally accepted
 accounting principles ("GAAP"); and

           WHEREAS, the Agreement and Plan of Merger, dated as of July 15,
 1999, as amended as of September 27, 1999, among Asarco Cyprus
 Incorporated, a Delaware corporation, ACO Acquisition Corp., a New Jersey
 corporation, CAM Acquisition Corp., a Delaware corporation, ASARCO and
 Cyprus Amax Minerals Company, a Delaware corporation, has been terminated.

           NOW, THEREFORE, in consideration of the representations,
 warranties, covenants and agreements contained in this Agreement, and fully
 intending to be legally bound hereby, the parties agree as follows:


                                  ARTICLE I
                              THE ASARCO OFFER

        Section 1.1   The ASARCO Offer.  (a)  As promptly as practicable
 (but in no event later than five business days after the public
 announcement of the transactions contemplated by this Agreement), Parent
 shall amend the ASARCO Offer to reflect the existence of this Agreement and
 amend the conditions to the ASARCO Offer in accordance herewith.  The
 expiration date of the ASARCO Offer shall be either (i) the initial
 expiration date of the ASARCO Offer as set forth in the Schedule 14D-1 or
 (ii) the tenth business day from and after the date the ASARCO Offer is
 amended to provide for the purchase of all of the outstanding shares of
 ASARCO Common Stock in accordance with the terms hereof (the "Expiration
 Date"), as soon as it is legally permitted under applicable Law.  The
 ASARCO Offer shall be made pursuant to a supplement to Parent's Offer to
 Purchase dated September 22, 1999 and related letter of transmittal
 (together with any supplements or amendments thereto, collectively the
 "Offer Documents") containing the terms and conditions set forth in this
 Agreement and in form reasonably satisfactory to ASARCO.  The obligation of
 Parent to accept for payment and pay for the shares of common stock, no par
 value, of ASARCO (the "ASARCO Common Stock") tendered pursuant to the
 ASARCO Offer shall be subject to the condition (the "Minimum Condition")
 that at least the number of shares of ASARCO Common Stock that when added
 to the ASARCO Common Stock  already owned by Parent shall constitute 80% of
 then outstanding ASARCO Common Stock on a fully diluted basis shall have
 been validly tendered and not withdrawn prior to the expiration of the
 ASARCO Offer and also shall be subject to the satisfaction of the other
 conditions set forth in Annex A hereto.  Parent expressly reserves the
 right to waive any such condition (other than the Minimum Condition, the
 Phelps Dodge Stockholder Approval Condition and the condition relating to
 the effectiveness of the Registration Statement), to increase the
 consideration per share of ASARCO Common Stock payable in the ASARCO Offer,
 and to make any other changes in the terms and conditions of the ASARCO
 Offer, provided however, that no change may be made which decreases the
 consideration per share of ASARCO Common Stock payable in the ASARCO Offer
 or which reduces the maximum number of shares of ASARCO Common Stock to be
 acquired in the ASARCO Offer or which imposes conditions to the ASARCO
 Offer in addition to those set forth in Annex A hereto.  Notwithstanding
 the foregoing, Parent shall extend the ASARCO Offer at any time up to March
 31, 2000 for one or more periods of not more than 10 business days, if at
 the Expiration Date of the ASARCO Offer, or any extension thereof, any of
 the conditions on Annex A is not satisfied or waived; provided, however, if
 all of the conditions to the ASARCO Offer are satisfied or waived but the
 number of shares of ASARCO Common Stock tendered is 85% or more, but less
 than 90%, of the then outstanding number of shares of ASARCO Common Stock
 then Parent may extend the ASARCO Offer for an aggregate period of not more
 than three business days beyond the Expiration Date.   The ASARCO Cash
 Consideration shall, subject to applicable withholding of taxes, be net to
 the seller in cash, upon  the terms and subject to the conditions of the
 ASARCO Offer.  Subject to the terms and conditions of the ASARCO Offer,
 Parent shall accept for payment and pay the ASARCO Cash Consideration and
 issue shares of common stock, par value $6.25 per share, of Parent (the
 "Parent Common Stock") in payment of the ASARCO Stock Consideration, as
 promptly as practicable after expiration of the ASARCO Offer, for all
 shares of ASARCO Common Stock validly tendered and not withdrawn.

        Section 1.2  ASARCO Elections.

        (a)   Subject to Sections 1.2(b), (c) and (d) below, each holder of
 ASARCO Common Stock shall be entitled, with respect to each share of ASARCO
 Common Stock held by such holder, to elect to receive either the ASARCO
 Cash Consideration or the ASARCO Stock Consideration.  Shares of ASARCO
 Common Stock that are validly tendered and not withdrawn and (i) covered by
 elections to receive the ASARCO Cash Consideration are referred to herein
 as "ASARCO Cash Election Shares", (ii) covered by elections to receive the
 ASARCO Stock Consideration are referred to herein as "ASARCO Stock Election
 Shares", and (iii) not covered by a valid election to receive either the
 ASARCO Cash Consideration or the ASARCO Stock Consideration are referred to
 herein as "ASARCO Non Electing Shares".

        (b)  Excess of Cash Elections.  If the aggregate ASARCO Cash
 Consideration elected in respect of all ASARCO Cash Election Shares exceeds
 $14.75 multiplied by the total number of shares of ASARCO Common Stock
 outstanding immediately prior to closing of the ASARCO Offer (the "ASARCO
 Maximum Cash Consideration"), the following will occur:

   (i)  Each ASARCO Cash Election Share will be exchanged in the ASARCO
   Offer for (A) $29.50 multiplied by a fraction (the "ASARCO Cash
   Proration Factor"), the numerator of which is the ASARCO Maximum Cash
   Consideration and the denominator of which is the number of ASARCO Cash
   Election Shares multiplied by $29.50, and (B) a number of shares of
   Parent Common Stock equal to 0.50266 multiplied by l minus the ASARCO
   Cash Proration Factor.

   (ii) Each ASARCO Stock Election Share and each ASARCO Non Electing Share
   will be exchanged for 0.50266 of a share of Parent Common Stock.

        (c)  Excess of Stock Elections.  If the aggregate ASARCO Stock
 Consideration elected in respect of all ASARCO Stock Election Shares
 exceeds 0.25133120 multiplied by the total number of shares of ASARCO
 Common Stock outstanding immediately prior to closing of the ASARCO Offer
 (the "ASARCO Maximum Stock Consideration"), the following will occur:

   (i)  Each ASARCO Stock Election Share will be exchanged in the ASARCO
   Offer for (A) a number of shares of Parent Common Stock equal to 0.50266
   multiplied by a fraction (the "ASARCO Stock Proration Factor"), the
   numerator of which is the ASARCO Maximum Stock Consideration and the
   denominator of which is the number of ASARCO Stock Election Shares
   multiplied by 0.50266, and (B) cash in an amount equal to $29.50
   multiplied by 1 minus the ASARCO Stock Proration Factor.

   (ii) Each ASARCO Cash Election Share and each ASARCO Non Electing Share
   will be exchanged for $29.50, without interest.

        (d)  No Excess of Cash or Stock Elections.  In the event that
 neither Section 1.2(b) or 1.2(c) above is applicable, the following will
 occur:

   (i)  Each ASARCO Cash Election Share will be exchanged for $29.50 in
   cash without interest.

   (ii) Each ASARCO Stock Election Share will be exchanged for 0.50266 of a
   share of Parent Common Stock.

   (iii)  Each ASARCO Non Electing Share will be exchanged for (A) an
   amount in cash without interest equal to $29.50 multiplied by a fraction
   (the "ASARCO Non Electing Proration Factor"), the numerator of which is
   the difference between the ASARCO Cash Number less the number of ASARCO
   Cash Election Shares and the denominator of which is the number of
   ASARCO Non Electing Shares; and (B) a number of shares of Parent Common
   Stock equal to 0.50266 multiplied by 1 minus the ASARCO Non Electing
   Proration Factor.  For purposes of this Section 1.2(d), the ASARCO Cash
   Number is determined by dividing the ASARCO Maximum Cash Consideration
   by $29.50.

        Section 1.3  ASARCO Action.

        (a)  ASARCO hereby approves of and consents to the ASARCO Offer and
 represents that (i) the Board of Directors of ASARCO (the "ASARCO Board"),
 at a meeting duly called and held on October 5, 1999, has unanimously (A)
 determined that this Agreement and the transactions contemplated hereby,
 including each of the ASARCO Offer and the ASARCO Merger, are fair to and
 in the best interests of the holders of ASARCO Common Stock, (B) approved
 and adopted this Agreement and the transactions contemplated hereby and (C)
 recommended that the shareholders of ASARCO accept the ASARCO Offer and
 approve and adopt this Agreement and the transactions contemplated hereby,
 and (ii) Credit Suisse First Boston Corporation has delivered to the Board
 an opinion that the consideration to be received by the holders of ASARCO
 Common Stock pursuant to each of the ASARCO Offer and the ASARCO Merger is
 fair to the holders of ASARCO Common Stock from a financial point of view.
 ASARCO hereby consents to the inclusion in the Offer Documents of the
 recommendation of the ASARCO Board described in the immediately preceding
 sentence, subject to Section 5.9(b).  ASARCO has been advised by each of
 its directors and executive officers that they intend either to tender all
 shares of ASARCO Common Stock beneficially owned by them to Parent pursuant
 to the ASARCO Offer or to vote such shares of ASARCO Common Stock in favor
 of the approval and adoption by the stockholders of ASARCO of this
 Agreement and the transactions contemplated hereby.

        (b)  As soon as reasonably practicable after the date hereof,
 ASARCO shall file with the SEC an amendment to its
 Solicitation/Recommendation Statement on Schedule 14D-9 (together with all
 amendments and supplements thereto, the "Schedule 14D-9") containing,
 subject to Section 5.9, the recommendation of the ASARCO Board described in
 Section 1.3(a) and shall disseminate the Schedule 14D-9 to the extent
 required by Rule 14D-9 promulgated under the Securities Exchange Act of
 1934, as amended (the "Exchange Act") and any other applicable federal
 securities laws.  ASARCO and Parent agree to correct promptly any
 information provided by either of them for use in the Schedule 14D-9 which
 shall have become false or misleading, and ASARCO further agrees to take
 all steps necessary to cause the Schedule 14D-9 as so corrected to be filed
 with the SEC and disseminated to holders of ASARCO Common Stock, in each
 case as and to the extent required by applicable federal securities laws.

        Section 1.4  Directors.  (a)  Promptly upon the purchase of and
 payment for shares of ASARCO by Parent or any of its Subsidiaries which
 represent at least a majority of the outstanding shares of ASARCO Common
 Stock (on a fully diluted basis) pursuant to the ASARCO Offer, Parent shall
 be entitled to designate such number of directors, rounded up to the next
 whole number, on the ASARCO Board as is equal to the product of the total
 number of directors on such Board (giving effect to the directors
 designated by Parent pursuant to this sentence) multiplied by the
 percentage that the aggregate number of shares of ASARCO Common Stock
 beneficially owned by SubA, Parent and any other wholly-owned subsidiary of
 Parent bears to the total number of shares of ASARCO Common Stock then
 outstanding.  ASARCO shall, upon request of SubA, use all reasonable
 efforts promptly either to increase the size of its Board of Directors or,
 at ASARCO's election, secure the resignations of such number of its
 incumbent directors as is necessary to enable Parent's designees to be so
 elected to the ASARCO Board, and shall cause Parent's designees to be so
 elected.  Notwithstanding the foregoing, until the Effective Time, ASARCO
 shall retain as members of its Board of Directors at least two directors
 who are directors of ASARCO on the date hereof (the "ASARCO Designees");
 provided, that subsequent to the purchase of and payment for shares of
 ASARCO Common Stock pursuant to the ASARCO Offer, Parent shall always have
 its designees represent at least a majority of the entire Board of
 Directors.  ASARCO's obligations under this Section 1.4(a) shall be subject
 to Section 14(f) of the Exchange Act and Rule 14f-1 promulgated thereunder.
 ASARCO shall promptly take all actions required pursuant to such Section
 14(f) and Rule 14f-1 in order to fulfill its obligations under this Section
 1.4(a), including mailing to shareholders the information required by such
 Section 14(f) and Rule 14f-1 as is necessary to enable Parent's designees
 to be elected to the ASARCO Board of Directors.  Parent or SubA will supply
 ASARCO any information with respect to either of them and their nominees,
 officers, directors and affiliates required by such Section 14(f) and Rule
 14f-1.

        (b)  From and after the time, if any, that Parent's designees
 constitute a majority of the ASARCO Board, any amendment of this Agreement,
 any termination of this Agreement by ASARCO, any extension of time for
 performance of any of the obligations of Parent or SubA hereunder, any
 waiver of any condition or any of ASARCO's rights hereunder or other action
 by ASARCO hereunder may be effected only by the action of a majority of the
 directors of ASARCO then in office who were directors of ASARCO on the date
 hereof, which action shall be deemed to constitute the action of the full
 Board of Directors; provided, that if there shall be no such directors,
 such actions may be effected by majority vote of the entire ASARCO Board.


                                 ARTICLE II
                         THE ASARCO MERGER; CLOSING

        Section 2.1  The ASARCO Merger.

        (a)  Upon the terms and subject to the conditions set forth in this
 Agreement, and in accordance with the New Jersey Business Corporation Act
 (the "NJBCA") and the Delaware General Corporation Law ("DGCL"), SubA shall
 merge with ASARCO (the "ASARCO Merger") at the Effective Time.  SubA shall
 be the surviving corporation in the ASARCO Merger (the "ASARCO Surviving
 Corporation").  From and after the Effective Time, the identity and
 separate existence of ASARCO shall cease.

        (b)  In connection with the ASARCO Merger, Parent shall reserve a
 sufficient number of shares of Parent Common Stock prior to the ASARCO
 Merger, to permit the issuance of shares of Parent Common Stock (i) to the
 holders of ASARCO Common Stock, as of the Effective Time in accordance with
 the terms of this Agreement, and (ii) upon the exercise of ASARCO Stock
 Options being assumed by Parent in accordance with Section 5.5 hereof.

        Section 2.2  Closing.  The closing of the ASARCO Merger (the
 "Closing") will take place at 10:00 a.m. local time on the day following
 the later of the  Parent Shareholders Meeting and the ASARCO Shareholders
 Meeting (the "Closing Date"), but shall in no event be later than the
 second business day after satisfaction or waiver of the conditions set
 forth in Article VI unless another time or date is agreed to by the parties
 hereto.  The Closing will be held at the offices of Shearman & Sterling,
 599 Lexington Avenue, New York, NY, unless another place is agreed to by
 the parties hereto.

        Section 2.3  Effective Time.  Subject to the provisions of this
 Agreement, as soon as practicable on or after the Closing Date,  (i) SubA
 and ASARCO shall file with the Secretary of State of the State of New
 Jersey a certificate of merger duly completed and executed in accordance
 with the relevant provisions of the NJBCA and shall make all other filings
 or recordings required under the NJBCA in order to effect the ASARCO Merger
 and (ii) SubA shall file with the Secretary of State of the State of
 Delaware a certificate of merger duly completed and executed in accordance
 with the relevant provisions of the DGCL in order to effect the ASARCO
 Merger. The ASARCO  Merger shall become effective at the actual time of the
 filing of both such certificates of merger, or of the later to be filed of
 such certificates of merger, or at such other later time as is reasonably
 specified in the certificates of merger (the time at which ASARCO Merger
 has become fully effective being hereinafter referred to as the "Effective
 Time").

        Section 2.4  Effects of the ASARCO Merger.

        (a)  NJBCA and DGCL .  The ASARCO Merger shall have the effects set
 forth in Section 14A:10-6 of the NJBCA and Section 259 of the DGCL.

        (b)  Name of Surviving Corporation.  The name of the ASARCO
 Surviving Corporation from and after the Effective Time shall be "ASARCO
 Incorporated" until changed or amended in accordance with applicable Law.

        (c)  Charter Documents.  At the Effective Time the Certificate of
 Incorporation and the Bylaws of SubA, as in effect immediately prior to the
 Effective Time, shall be the Certificate of Incorporation and Bylaws,
 respectively, of the ASARCO Surviving Corporation.

        Section 2.5  Directors and Officers.  The directors of SubA at the
 Effective Time shall be the directors of the ASARCO Surviving Corporation
 until the next annual meeting of shareholders of ASARCO (or their earlier
 resignation or removal) and until their respective successors are duly
 elected and qualified, as the case may be.  The officers of SubA at the
 Effective Time shall be the officers of the ASARCO Surviving Corporation,
 until their respective successors are duly appointed.


                                 ARTICLE III
                 EFFECT OF THE ASARCO MERGER ON THE STOCK OF
                     ASARCO; EXCHANGE  OF  CERTIFICATES

        Section 3.1  Effect on ASARCO Stock and SubA Stock.  As of the
 Effective Time, by virtue of the ASARCO Merger and without any action on
 the part of SubA, ASARCO or the holders of any securities of SubA or
 ASARCO:

        (a)  Cancellation of Treasury Stock and Parent Owned Stock.  Each
 share of ASARCO Common Stock that is owned directly by ASARCO or any of its
 Subsidiaries or by Parent or any of its Subsidiaries (but not including any
 such shares owned by employees or employee benefit or pension plans) shall
 automatically be cancelled and retired and shall cease to exist, and no
 consideration shall be delivered in exchange therefor.

        (b)  Conversion of ASARCO Common Stock.  Each issued and
 outstanding share of ASARCO Common Stock (other than shares to be cancelled
 in accordance with Section 3.1(a)) shall be converted into the ASARCO Stock
 Consideration, the ASARCO Cash Consideration or a combination thereof, in
 each case determined pursuant to this Section 3.1(b) (such consideration
 being referred to herein as the "ASARCO Merger Consideration").  If Section
 1.2(b) is applicable to the ASARCO Offer, each outstanding share of ASARCO
 Common Stock will be converted in the ASARCO Merger into the right to
 receive the ASARCO Stock Consideration.  If Section 1.2(c) is applicable to
 the ASARCO Offer, each outstanding share of ASARCO Common Stock will be
 converted in the ASARCO Merger into the right to receive the ASARCO Cash
 Consideration.  If neither Section 1.2(b) nor Section 1.2(c) is applicable,
 each outstanding share of ASARCO Common Stock will be converted in the
 ASARCO Merger into (A) an amount of cash equal to the ASARCO Merger Cash
 Amount, without interest, and (B) a number of shares of Parent Common Stock
 equal to the ASARCO Merger Stock Amount. The ASARCO Merger Cash Amount and
 the ASARCO Merger Stock Amount will be determined as follows:

   (i)  The aggregate amount of ASARCO Cash Consideration actually paid in
   the ASARCO Offer will be subtracted from the Total ASARCO Available Cash
   to determine the amount of cash available to be paid in the ASARCO
   Merger (the "Aggregate ASARCO Merger Cash Consideration").  For purposes
   of this Section, Total ASARCO Available Cash equals (A) the number of
   shares exchanged in the ASARCO Offer plus the number of shares of ASARCO
   Common Stock to be converted in the ASARCO Merger, multiplied by (B)
   $14.75.

   (ii) The Aggregate ASARCO Merger Cash Consideration will be divided by
   the number of shares of ASARCO Common Stock to be converted in the
   ASARCO Merger, to determine the amount of cash consideration to be paid
   in respect of each such share of ASARCO Common Stock in the ASARCO
   Merger (the "ASARCO Merger Cash Amount").

   (iii) The aggregate number of shares of Parent Common Stock actually
   issued as ASARCO Stock Consideration in the ASARCO Offer will be
   subtracted from the Total ASARCO Available Stock to determine the number
   of shares of Parent Common Stock available to be paid in the ASARCO
   Merger (the "Aggregate ASARCO Merger Stock Consideration").  For
   purposes of this Section, Total ASARCO Available Stock equals (A) the
   number of shares of ASARCO Common Stock exchanged in the ASARCO Offer
   plus the number of shares of ASARCO Common Stock to be converted in the
   ASARCO Merger, multiplied by (B) 0.25133120.

   (iv) The Aggregate ASARCO Merger Stock Consideration will be divided by
   the number of shares of ASARCO Common Stock to be converted in the
   ASARCO Merger, to determine the number of shares of Parent Common Stock
   to be issued in respect of each such share of ASARCO Common Stock in the
   ASARCO Merger (the "ASARCO Merger Stock Amount").

   As of the Effective Time, all such shares of ASARCO Common Stock shall
 no longer be outstanding and shall automatically be cancelled and retired
 and shall cease to exist, and each holder of a certificate or certificates
 which immediately prior to the Effective Time represented outstanding
 shares of ASARCO Common Stock (the "ASARCO Certificates") shall cease to
 have any rights with respect thereto, except the right to receive (x) the
 ASARCO Merger Consideration, (y) certain dividends and other distributions
 in accordance with Section 3.2(c), and (z)  cash in lieu of fractional
 shares of Parent Common Stock in accordance with Section 3.2(e), without
 interest.

        (c)  Conversion of Common Stock of SubA.  Each issued and
 outstanding share of common stock, par value $.01 per share, of SubA shall
 be converted into one fully paid and nonassessable share of common stock of
 the ASARCO Surviving Corporation.

        Section 3.2  Exchange of Certificates.

        (a)  Exchange Agent.  As of the Effective Time, Parent shall enter
 into an agreement with a bank or trust company designated by it and
 reasonably satisfactory to ASARCO (the "Exchange Agent"), which shall
 provide that Parent shall deposit with the Exchange Agent as of the
 Effective Time, for the benefit of the holders of shares of ASARCO Common
 Stock for exchange in accordance with this Article III, through the
 Exchange Agent, (i) cash in the amount required to be exchanged for ASARCO
 Common Stock pursuant to Section 3.1(b) and (ii) certificates ("Parent
 Certificates") representing the number of whole shares of Parent Common
 Stock issuable pursuant to Section 3.1(b) in exchange for outstanding
 shares of ASARCO Common Stock (such cash and shares of Parent Common Stock,
 together with any dividends or distributions with respect thereto with a
 record date after the Effective Time, any Excess Shares and any cash
 (including cash proceeds from the sale of the Excess Shares) payable in
 lieu of any fractional shares of Parent Common Stock being hereinafter
 referred to as the "Exchange Fund").

        (b)  Exchange Procedures.  As soon as reasonably practicable after
 the Effective Time, the Exchange Agent shall mail to each holder of record
 of an ASARCO Certificate whose shares were converted into the ASARCO Merger
 Consideration pursuant to Section 3.1(b), (i) a letter of transmittal
 (which shall specify that delivery shall be effected, and risk of loss and
 title to the ASARCO Certificates shall pass, only upon delivery of the
 ASARCO Certificates to the Exchange Agent and shall be in such form and
 have such other provisions as ASARCO and Parent may reasonably specify),
 and (ii) instructions for use in effecting the surrender of the ASARCO
 Certificates in exchange for the ASARCO Merger Consideration.  Upon
 surrender of an ASARCO Certificate for cancellation to the Exchange Agent,
 together with such letter of transmittal, duly executed, and such other
 documents as may reasonably be required by the Exchange Agent, the holder
 of such ASARCO Certificate shall be entitled to receive in exchange
 therefor (i) a check in the amount equal to the cash, if any, which such
 holder has the right to receive pursuant to the provisions of this Article
 III and (ii) a Parent Certificate representing that number of whole shares
 of Parent Common Stock, if any, which such holder has the right to receive
 pursuant to the provisions of this Article III, certain dividends or other
 distributions in accordance with Section 3.2(c) and cash in lieu of any
 fractional share in accordance with Section 3.2(e). The ASARCO Certificate
 so surrendered shall forthwith be cancelled.  In the event of a transfer of
 ownership of ASARCO Common Stock not registered in the transfer records of
 ASARCO, the applicable ASARCO Merger Consideration may be issued or paid to
 a person other than the person in whose name the ASARCO Certificate so
 surrendered is registered if such ASARCO Certificate shall be properly
 endorsed or otherwise be in proper form for transfer, and the person
 requesting such issuance shall pay all transfer or other non-income Taxes
 required by reason of the issuance of ASARCO Merger Consideration to a
 person other than the registered holder of such ASARCO Certificate or
 establish to the satisfaction of Parent that such Tax has been paid or is
 not applicable.  Until surrendered as contemplated by this Section 3.2,
 each ASARCO Certificate shall be deemed at any time after the Effective
 Time to represent only the right to receive upon such surrender the
 applicable ASARCO Merger Consideration into which the shares of ASARCO
 Common Stock formerly represented by such ASARCO Certificate have been
 converted, certain dividends or other distributions in accordance with
 Section 3.2(c) and cash in lieu of any fractional share in accordance with
 Section 3.2(e).  No interest will be paid or will accrue on any cash
 payable to holders of ASARCO Certificates pursuant to the provisions of
 this Article III.

        (c)  Distributions with Respect to Unexchanged Shares.   No
 dividends or other distributions with respect to Parent Common Stock with a
 record date after the Effective Time shall be paid to the holder of any
 unsurrendered ASARCO Certificate with respect to the shares of Parent
 Common Stock represented thereby, and no cash payment in lieu of fractional
 shares shall be paid to any such holder pursuant to Section 3.2(e), and all
 such dividends, other distributions and cash in lieu of fractional shares
 of Parent Common Stock shall be paid by Parent to the Exchange Agent and
 shall be included in the Exchange Fund, in each case until the surrender of
 such ASARCO Certificate in accordance with this Article III.  Subject to
 the effect of applicable escheat or similar Laws, following surrender of
 any such ASARCO Certificate there shall be paid to the holder of the Parent
 Certificate representing whole shares of Parent Common Stock issued in
 exchange therefor, without interest, (i) at the time of such surrender, the
 amount of dividends or other distributions with a record date after the
 Effective Time theretofore paid with respect to such whole shares of Parent
 Common Stock and the amount of any cash payable in lieu of a fractional
 share of Parent Common Stock to which such holder is entitled pursuant to
 Section 3.2(e), and (ii) at the appropriate payment date, the amount of
 dividends or other distributions with a record date after the Effective
 Time but prior to such surrender and with a payment date subsequent to such
 surrender payable with respect to such whole shares of Parent Common Stock.
 Parent shall make available to the Exchange Agent cash for these purposes.

        (d)  No Further Ownership Rights in ASARCO Common Stock.  All
 ASARCO Merger Consideration issued or paid upon the surrender for exchange
 of ASARCO Certificates in accordance with the terms of this Article III
 shall be deemed to have been issued and paid in full satisfaction of all
 rights pertaining to the shares of ASARCO Common Stock theretofore
 represented by such ASARCO Certificates, subject, however, to the ASARCO
 Surviving Corporation's obligation to pay any dividends or make any other
 distributions with a record date prior to the Effective Time which may have
 been authorized or made by ASARCO on such shares of ASARCO Common Stock
 which remain unpaid at the Effective Time, and there shall be no further
 registration of transfers on the stock transfer books of the ASARCO
 Surviving Corporation of the shares of ASARCO Common Stock which were
 outstanding immediately prior to the Effective Time.  If, after the
 Effective Time, ASARCO Certificates are presented to the ASARCO Surviving
 Corporation or the Exchange Agent for any reason, they shall be cancelled
 and exchanged as provided in this Article III, except as otherwise provided
 by Law.

        (e)  No Fractional Shares.  (i)  No Parent Certificates or scrip
 representing fractional shares of Parent Common Stock shall be issued upon
 the surrender for exchange of ASARCO Certificates, no dividend or
 distribution of Parent shall relate to such fractional share interests, and
 such fractional share interests will not entitle the owner thereof to vote
 or to any rights of a shareholder of Parent.

   (ii) As promptly as practicable following the Effective Time, the
   Exchange Agent will determine the excess of (A) the number of whole
   shares of Parent Common Stock delivered to the Exchange Agent by Parent
   pursuant to Section 3.2(a) for exchange pursuant to Section 3.1 for
   outstanding shares of ASARCO Common Stock over (B) the aggregate number
   of whole shares of Parent Common Stock to be distributed to holders of
   ASARCO Common Stock pursuant to Section 3.2(b) (such excess being herein
   called the "Excess Shares").  Following the Effective Time, the Exchange
   Agent will, on behalf of former shareholders of ASARCO, sell the Excess
   Shares at then-prevailing prices on the New York Stock Exchange, Inc.
   (the "NYSE"), all in the manner provided in Section 3.2(e)(iii).

   (iii) The sale of the Excess Shares by the Exchange Agent will be
   executed on the NYSE through one or more member firms of the NYSE and
   will be executed in round lots to the extent practicable.  The Exchange
   Agent will use reasonable efforts to complete the sale of the Excess
   Shares as promptly following the Effective Time as, in the Exchange
   Agent's sole judgment, is practicable consistent with obtaining the best
   execution of such sales in light of prevailing market conditions.  Until
   the net proceeds of such sale or sales have been distributed to the
   holders of ASARCO Common Stock, the Exchange Agent will hold such
   proceeds in trust for the holders of ASARCO Common Stock (the "Common
   Shares Trust").  The Parent will pay all commissions, transfer Taxes and
   other out-of-pocket transaction costs, including the expenses and
   compensation of the Exchange Agent incurred in connection with such sale
   of the Excess Shares.  The Exchange Agent will determine the portion of
   the Common Shares Trust to which each holder of ASARCO Common Stock is
   entitled, if any, by multiplying the amount of the aggregate net
   proceeds comprising the Common Shares Trust by a fraction, the numerator
   of which is the amount of the fractional share interest to which such
   holder of ASARCO Common Stock is entitled (after taking into account all
   shares of ASARCO Common Stock held at the Effective Time by such holder)
   and the denominator of which is the aggregate amount of fractional share
   interests to which all holders of ASARCO Common Stock are entitled.

   (iv) As soon as practicable after the determination of the amount of
   cash, if any, to be paid to holders of ASARCO Common Stock with respect
   to any fractional share interests, the Exchange Agent will make
   available such amounts to such holders of ASARCO Common Stock subject to
   and in accordance with the terms of Section 3.2(c).

        (f)  Termination of Exchange Fund.  Any portion of the Exchange
 Fund which remains undistributed to the holders of the ASARCO Certificates
 six months after the Effective Time shall be delivered to Parent upon
 demand, and any holders of the ASARCO Certificates who have not theretofore
 complied with this Article III shall thereafter look only to Parent for
 payment of their claim for ASARCO Merger Consideration, any cash in lieu of
 fractional shares of Parent Common Stock and any dividends or distributions
 with respect to Parent Common Stock.

        (g)  No Liability.  None of Parent, ASARCO or the Exchange Agent
 shall be liable to any person in respect of any shares of Parent Common
 Stock (or dividends or distributions with respect thereto) or cash from the
 Exchange Fund in each case delivered to a public official pursuant to any
 applicable abandoned property, escheat or similar Law.  If any ASARCO
 Certificate shall not have been surrendered prior to seven years after the
 Effective Time (or immediately prior to such earlier date on which any
 ASARCO Merger Consideration, any cash payable to the holder of such ASARCO
 Certificate pursuant to this Article III or any dividends or distributions
 payable to the holder of such ASARCO Certificate would otherwise escheat to
 or become the property of any governmental body or authority) any such
 ASARCO Merger Consideration or cash, dividends or distributions in respect
 of such ASARCO Certificate shall, to the extent permitted by applicable
 Law, become the property of the ASARCO Surviving Corporation, free and
 clear of all claims or interest of any person previously entitled thereto.

        (h)  Lost Certificates.  If any ASARCO Certificate shall have been
 lost, stolen or destroyed, upon the making of an affidavit of that fact by
 the person claiming such ASARCO Certificate to be lost, stolen or destroyed
 and, if required by the ASARCO Surviving Corporation, the posting by such
 person of a bond in such reasonable amount as the ASARCO Surviving
 Corporation may direct as indemnity against any claim that may be made
 against it with respect to such ASARCO Certificate, the Exchange Agent will
 issue in exchange for such lost, stolen or destroyed ASARCO Certificate the
 ASARCO Merger Consideration and, if applicable, any cash in lieu of
 fractional shares, and unpaid dividends and distributions on shares of
 Parent Common Stock as may be deliverable in respect thereof pursuant to
 this Agreement.


                                 ARTICLE IV
                       REPRESENTATIONS AND WARRANTIES

        Except as set forth in the disclosure schedule delivered by Parent
 to ASARCO prior to the execution of this Agreement (the "Parent Disclosure
 Schedule"), Parent hereby represents and warrants to ASARCO, and, except as
 set forth in the disclosure schedule delivered by ASARCO to Parent prior to
 the execution of this Agreement (the "ASARCO Disclosure Schedule"), ASARCO
 hereby represents and warrants to Parent, in each case as set forth in this
 Article IV, with the party making such representations and warranties being
 referred to as the "Representing Party" and such Representing Party's
 Disclosure Schedule as the "Representing Party's Disclosure Schedule."
 Notwithstanding the foregoing, any representation or warranty which
 expressly refers to ASARCO or Parent is being made solely by ASARCO or
 Parent, as the case may be.

        Section 4.1  Organization, Qualification, Etc.

        (a)  The Representing Party is a corporation duly organized,
 validly existing and in good standing (or other equivalent status) under
 the laws of the jurisdiction of its incorporation and has the corporate
 power and authority to own, operate and lease all of its properties and
 assets and to carry on its business as it is now being conducted or
 presently proposed to be conducted and is duly qualified to do business and
 is in good standing (or other equivalent status) in each jurisdiction in
 which the ownership, operation or leasing of its properties or assets or
 the conduct of its business requires such qualification, except for
 jurisdictions in which the failure to be so qualified or in good standing
 (or other equivalent status) would not, individually or in the aggregate,
 have a Material Adverse Effect on the Representing Party and its
 Subsidiaries, taken as a whole.  As used in this Agreement, any reference
 to any state of facts, event, change or effect having a "Material Adverse
 Effect" on or with respect to a Representing Party, means such state of
 facts, event, change or effect that has had or would reasonably be expected
 to have a material adverse effect on the business, results of operations or
 financial condition of the Representing Party and its Subsidiaries, taken
 as a whole; provided, however, that any adverse effect that copper prices
 have had or may have on the business, results of operations or financial
 condition of the Representing Party and its Subsidiaries, taken as a whole,
 shall not be deemed a Material Adverse Effect for purposes of this
 Agreement.  The copies of each Representing Party's Certificate of
 Incorporation and Bylaws which have been delivered to the other
 Representing Party are complete and correct and in full force and effect.

        (b)  Each of the Representing Party's Significant Subsidiaries is a
 corporation duly organized, validly existing and in good standing (or other
 equivalent status) under the laws of its jurisdiction of incorporation or
 organization, has the power and authority to own, operate and lease its
 properties and to carry on its business as it is now being conducted or
 presently proposed to be conducted, and is duly qualified to do business
 and is in good standing (or equivalent status) in each jurisdiction in
 which the ownership, operation or leasing of its properties or assets or
 the conduct of its business requires such qualification, except for
 jurisdictions in which the failure to be so qualified or in good standing
 (or other equivalent status) would not, individually or in the aggregate,
 have a Material Adverse Effect on the Representing Party.  Each
 Representing Party has made available to the other Representing Party
 complete and correct copies of the certificate of incorporation, bylaws or
 other similar governing documents which are in full force and effect for
 each of such Representing Party's Significant Subsidiaries that are not
 directly or indirectly wholly owned.

        (c)  All the outstanding shares of capital stock of, or other
 ownership interests in, the Representing Party's Subsidiaries are validly
 issued, fully paid and non-assessable and are owned of record and
 beneficially by such Representing Party, directly or indirectly, free and
 clear of all Encumbrances.  As used in this Agreement, the term
 "Encumbrance" means any mortgage, pledge, lien, charge, encumbrance,
 defect, security interest, claim, option or restriction of any kind.  There
 are no (i) securities of the Representing Party or any of its Subsidiaries
 convertible into or exchangeable or exercisable for shares of capital stock
 or other voting securities or ownership interests in any of the
 Representing Party's Subsidiaries, (ii) warrants, calls, options or other
 rights to acquire from the Representing Party or any of its Subsidiaries,
 or any obligations of the Representing Party or any of its Subsidiaries to
 issue, any capital stock, voting securities or other ownership interests
 in, or any securities convertible into or exchangeable or exercisable for,
 any capital stock, voting securities or ownership interests in any of the
 Representing Party's Subsidiaries, or (iii) obligations of the Representing
 Party or any of its Subsidiaries to repurchase, redeem or otherwise acquire
 any outstanding securities of the Representing Party's Subsidiaries or to
 issue, deliver or sell, or cause to be issued, delivered or sold, any such
 securities.

        (d)  Except for the Representing Party's Subsidiaries, as set forth
 in Section 4.1(d) of the Representing Party's Disclosure Schedule or the
 Representing Party's (or any of its Subsidiaries') SEC Reports, and in
 respect of minerals exploration or development agreements in the ordinary
 course of business, the Representing Party (excluding employee pension or
 benefit plans) does not own any securities of, or have any debt or equity
 investment in, or loans outstanding to, any corporation, partnership, joint
 venture, limited liability company or other entity.  The Representing Party
 is not subject to any contractual obligation under which it may be required
 to advance or contribute capital to any entity, except in respect of
 minerals exploration or development agreements in the ordinary course of
 business.

        Section 4.2  Capital Stock.

        (a)  Section 4.2(a) of the Representing Party's Disclosure Schedule
 sets forth as of September 30, 1999:

   (i)  the number of authorized shares of each class or series of capital
   stock of the Representing Party;

   (ii) the number of shares of each class or series of capital stock of
   the Representing Party which are issued and outstanding;

   (iii) the number of shares of each class or series of capital stock
   which are held in the treasury of such Representing Party;

   (iv) the number of shares of each class or series of capital stock of
   the Representing Party which are reserved for issuance, indicating each
   specific reservation; and

   (v)  the number of shares of each class or series of capital stock of
   such Representing Party which are subject to employee stock options or
   other rights to purchase or receive capital stock granted under such
   Representing Party's stock option or other stock based employee or non-
   employee director benefit plans, indicating the name of the plan, the
   date of grant, the number of shares and the exercise price thereof.

        (b)  All of the issued and outstanding shares of capital stock of
 the Representing Party have been validly issued and are fully paid and
 nonassessable.  Except as set forth in Section 4.2(a) of the Representing
 Party's Disclosure Schedule, there are no authorized, issued, reserved for
 issuance or outstanding (i) shares of capital stock or voting securities of
 the Representing Party, (ii) securities convertible into or exchangeable
 for shares of capital stock or voting securities of the Representing Party,
 (iii) warrants, calls, options or other rights to acquire from the
 Representing Party or any of its Subsidiaries, or any obligation of the
 Representing Party or any of its Subsidiaries to issue, any shares of
 capital stock or voting securities or securities convertible into or
 exchangeable or exercisable for capital stock or voting securities of the
 Representing Party, and (iv) there are no outstanding obligations of the
 Representing Party to repurchase, redeem or otherwise acquire any such
 securities or to issue, deliver or sell, or cause to be issued, delivered
 or sold, any such securities.

        Section 4.3  Corporate Authority Relative to this Agreement.

        (a)  Parent has the corporate power and authority to enter into
 this Agreement and to carry out its obligations hereunder.  The execution,
 delivery and performance of this Agreement and the consummation of the
 transactions contemplated hereby have been duly and validly authorized by
 the Board of Directors of Parent, and, except for the approval of the
 issuance of the Parent Common Stock in the ASARCO Merger (the"Share
 Issuance") by its shareholders, no other corporate proceedings on the part
 of Parent are necessary to authorize the consummation of the transactions
 contemplated hereby.  The Board of Directors of Parent has determined that
 the transactions contemplated by this Agreement are in the best interests
 of Parent and its shareholders and to recommend to such shareholders that
 they approve the Share Issuance. This Agreement has been duly and validly
 executed and delivered by Parent and, assuming this Agreement constitutes a
 valid and binding agreement of the other parties hereto, this Agreement
 constitutes a valid and binding agreement of Parent, enforceable against
 Parent in accordance with its terms (except insofar as enforceability may
 be limited by applicable bankruptcy, insolvency, reorganization, moratorium
 or similar laws affecting creditors' rights generally, or by principles
 governing the availability of equitable remedies).

        (b)  ASARCO has the corporate power and authority to enter into
 this Agreement and to carry out its obligations hereunder.  The execution,
 delivery and performance of this Agreement and the consummation of the
 transactions contemplated hereby have been duly and validly authorized by
 the Board of Directors of ASARCO, and, except for the approval of this
 Agreement by its shareholders, no other corporate proceedings on the part
 of ASARCO are necessary to authorize the consummation of the transactions
 contemplated hereby.  The Board of Directors of ASARCO has taken all
 appropriate action so that none of Parent or SubA will be (i) an
 "interested stockholder" within the meaning of Section 14A:10A-3 of the
 NJBCA or (ii) an "interested shareholder" within the meaning of the
 Certificate of Incorporation of ASARCO by virtue of Parent and SubA
 entering into this Agreement and consummating the transactions contemplated
 hereby.  The Board of Directors of ASARCO has determined that the
 transactions contemplated by this Agreement are in the best interests of
 ASARCO and its shareholders and to recommend to such shareholders that they
 approve this Agreement.  This Agreement  has been duly and validly executed
 and delivered by ASARCO and, assuming this Agreement constitutes a valid
 and binding agreement of the other parties hereto, this Agreement
 constitutes a valid and binding agreement of ASARCO, enforceable against
 ASARCO in accordance with its terms (except insofar as enforceability may
 be limited by applicable bankruptcy, insolvency, reorganization, moratorium
 or similar laws affecting creditors' rights generally, or by principles
 governing the availability of equitable remedies).

        Section 4.4  Non-Contravention; Consents and Approvals.

        (a)  None of the execution, delivery or performance of this
 Agreement by the Representing Party or the consummation by such
 Representing Party of the transactions contemplated hereby will (i) violate
 the certificate of incorporation or the bylaws or other similar governing
 documents of the Representing Party or any of its Subsidiaries, (ii) except
 for the Required Third Party Consents, result in the violation or breach of
 or constitute (with or without due notice or lapse of time or both) a
 default (or give rise to any right of termination, cancellation, vesting,
 payment, exercise, acceleration, suspension or revocation) under any of the
 provisions of any note, bond, mortgage, deed of trust, security interest,
 indenture, license, contract, agreement, plan or other instrument or
 obligation to which the Representing Party or any of its Subsidiaries is a
 party or by which any of them or any of their properties or assets may be
 bound (the "Representing Party Agreements"), (iii) except for the Required
 Statutory Approvals, violate any order, writ, injunction, decree, judgment,
 permit, license, statute, law, ordinance, policy, rule or regulation
 ("Law") of any court, tribunal or administrative, governmental or
 regulatory body, agency, commission, division, department, public body or
 other authority, whether federal, state, local or foreign (individually, a
 "Governmental Entity") applicable to the Representing Party or any of its
 Subsidiaries or any of their respective property or assets, or (iv) result
 in the creation or imposition of any Encumbrance on any asset of the
 Representing Party or any of its Subsidiaries, except in the case of
 clauses (ii), (iii) and (iv) for violations, breaches, defaults,
 terminations, cancellations, accelerations or creations which would not in
 the aggregate have a Material Adverse Effect on the Representing Party and
 its Subsidiaries, taken as a whole, or prevent or delay the consummation of
 the transactions contemplated hereby.

        (b)  Section 4.4(b)(i)  of the Representing Party's Disclosure
 Schedule sets forth  a list of all third party consents and approvals
 required to be obtained under the Representing Party Agreements prior to
 the consummation of the transactions contemplated by this Agreement the
 failure of which to obtain would have, individually or in the aggregate, a
 Material Adverse Effect on the Representing Party and its Subsidiaries,
 taken as a whole (the "Required Third Party Consents").  Section 4.4(b)(ii)
 of the Representing Party's Disclosure Schedule sets forth a list of all
 notices to, filings and registrations with, and permits, authorizations,
 consents and approvals of, Governmental Entities required to be made or
 obtained from Governmental Entities prior to the consummation of the
 transactions contemplated by this Agreement the failure of which to obtain
 would have, individually or in the aggregate, a Material Adverse Effect on
 the Representing Party and its Subsidiaries, taken as a whole (the
 "Required Statutory Approvals").

        Section 4.5  Reports and Financial Statements.  The Representing
 Party has previously furnished or made available to the other Representing
 Party complete and correct copies of:

        (a)  such Representing Party's (and any of its Subsidiaries')
 Annual Reports on Form 10-K filed with the Securities and Exchange
 Commission (the "SEC") for each of the years ended December 31, 1996
 through 1998;

        (b)  such Representing Party's (and any of its Subsidiaries')
 Quarterly Reports on Form 10-Q filed with the SEC for each of the fiscal
 quarters ended following such Representing Party's last fiscal year end;

        (c)  each definitive proxy statement filed by such Representing
 Party or any of its Subsidiaries with the SEC since March 1, 1996;

        (d)  each final prospectus filed by such Representing Party with
 the SEC since December 31, 1995; and

        (e)  all Current Reports on Form 8-K filed by such Representing
 Party with the SEC since January 1, 1998.

 As of their respective dates, such reports, proxy statements and
 prospectuses (collectively, with any amendments, supplements and exhibits
 thereto, the "SEC Reports") (i) complied as to form in all material
 respects with the applicable requirements of the Securities Act of 1933, as
 amended (the "Securities Act"), the Exchange Act, and the rules and
 regulations promulgated thereunder, and (ii) did not contain any untrue
 statement of a material fact or omit to state a material fact required to
 be stated therein or necessary to make the statements therein, in light of
 the circumstances under which they were made, not misleading.  Except to
 the extent that information contained in any SEC Report of the Representing
 Party has been revised or superseded by an SEC Report subsequently filed by
 the Representing Party, none of the Representing Party's SEC Reports
 contains any untrue statement of a material fact or omits to state any
 material fact required to be stated therein or necessary in order to make
 the statements therein, in light of the circumstances under which they were
 made, not misleading.  The audited consolidated financial statements and
 unaudited consolidated interim financial statements included in the
 Representing Party's SEC Reports (including any related notes and
 schedules) fairly present the financial position of the Representing Party
 and its consolidated Subsidiaries as of the dates thereof and the results
 of operations and cash flows for the periods then ended (subject, in the
 case of unaudited statements, to normal year-end adjustments), in each case
 in accordance with past practice and GAAP consistently applied during the
 periods involved (except as otherwise disclosed in the notes thereto).
 Since January 1, 1998, the Representing Party has timely filed all reports,
 registration statements and other filings required to be filed by it with
 the SEC under the rules and regulations of the SEC.

        Section 4.6  Environmental Matters.

        (a)  Except for Environmental Claims disclosed in or referred to in
 Section 4.6(b) of the Disclosure Schedule, as of the date of this
 Agreement, each of the Representing Party and its Subsidiaries has obtained
 all licenses, permits, authorizations, approvals and consents from
 Governmental Entities which are required under any applicable Environmental
 Law in respect of its business, properties, assets and operations
 ("Environmental Permits"), except (i) for such permits as to which due and
 proper application is pending, and (ii) for such failures to have
 Environmental Permits which, individually or in the aggregate, are not
 reasonably expected to have a Material Adverse Effect on the Representing
 Party and its Subsidiaries, taken as a whole.  Each of such Environmental
 Permits is in full force and effect, and each of the Representing Party and
 its Subsidiaries is in compliance with the terms and conditions of all such
 Environmental Permits and with all applicable Environmental Laws, except
 for such exceptions as would not, individually or in the aggregate, have a
 Material Adverse Effect on the Representing Party and its Subsidiaries,
 taken as a whole.

        (b)  Except for Environmental Claims disclosed in or referred to in
 Section 4.6(b) of the Disclosure Schedule, as of the date of this
 Agreement, there is no Environmental Claim filed, pending, or to the best
 knowledge of the Representing Party threatened or in process, against the
 Representing Party or any of its Subsidiaries or any person whose liability
 for such Environmental Claim the Representing Party or any of its
 Subsidiaries has or may have retained or assumed either contractually or by
 operation of Law, that would, individually or in the aggregate, have a
 Material Adverse Effect on the Representing Party and its Subsidiaries,
 taken as a whole.

        (c)  Except as disclosed or referred to in Section 4.6(c) of the
 Disclosure Schedule, no Encumbrances have arisen under or pursuant to any
 Environmental Law on any property, site or facility owned, operated or
 leased by the Representing Party or any of its Subsidiaries, except for
 such Encumbrances which would not, individually or in the aggregate, have a
 Material Adverse Effect on the Representing Party and its Subsidiaries,
 taken as a whole, and no action of any Governmental Entity has been taken
 or, to the best knowledge of the Representing Party, is threatened or in
 process which could subject any of such properties to such Encumbrances,
 except for such action which would not, individually or in the aggregate,
 have a Material Adverse Effect on the Representing Party and its
 Subsidiaries, taken as a whole.

        (d)  As used in this Agreement:

   (i)  "Environmental Claim" means any claim, action, cause of action,
   order, investigation or notice (written or oral) by any person alleging
   potential or actual liability (including, without limitation, potential
   or actual liability for investigation, evaluation, cleanup, removal
   actions, remedial actions, response actions, natural resources damages,
   property damages, personal injuries or penalties) arising out of, based
   on or resulting from any Environmental Law, including any claim under
   CERCLA, and shall include any request for information under CERCLA or
   any comparable state or local Law.

   (ii) "Environmental Law" means any Law relating to (a) the environment
   or pollution, environmental matters, the protection of the environment,
   or the protection of human health and safety from environmental
   concerns, (b) actual or threatened emissions, discharges, or releases of
   pollutants, contaminants, chemicals or solid, industrial, toxic or
   hazardous substances, wastes or constituents into the environment, and
   (c) the presence, manufacture, processing, distribution, use, treatment,
   storage, disposal, transport or handling of Hazardous Materials.

   (iii) "Hazardous Materials" mean (a) any petroleum or petroleum
   products and radioactive materials, (b) any chemicals, constituents,
   materials, or substances defined or included in the definition of
   "hazardous substances," "hazardous wastes," "hazardous materials,"
   "extremely hazardous substances," "toxic substances " and related
   materials, as such materials are defined in any Environmental Law, and
   (c) any other chemical, material or substance, exposure to which is
   prohibited, limited or regulated by any Governmental Entity.

        Section 4.7   Employee Benefit Plans; ERISA.

        (a)  Except as set forth in the Representing Party's SEC Reports or
 as would not have a Material Adverse Effect on the Representing Party and
 its Subsidiaries, taken as a whole, (i) all Employee Benefit Plans (other
 than any Employee Benefit Plan that is a "multiemployer plan" within the
 meaning of Section 3(37) of ERISA (a "Multiemployer Plan")) of the
 Representing Party are in material compliance with all applicable
 requirements of Law, including ERISA and the Code, and (ii) neither the
 Representing Party nor any of its Subsidiaries nor any ERISA Affiliate has
 any liabilities or obligations with respect to any such Employee Benefit
 Plans, whether accrued, contingent or otherwise, that are not otherwise
 reflected on the Representing Party's financial statements, nor to the best
 knowledge of the Representing Party, are any such liabilities or
 obligations expected to be incurred.  Except as described in the
 Representing Party's (or any of its Subsidiaries') SEC Reports or as set
 forth in Section 4.7(a) of the Representing Party's Disclosure Schedule,
 the execution and delivery of, and performance of the transactions
 contemplated by this Agreement will not (either alone or upon the
 occurrence of any additional or subsequent events) constitute an event
 under any Employee Benefit Plan of the Representing Party that will or may
 result in acceleration, forgiveness of indebtedness, vesting, distribution,
 increase in benefits or obligation to fund benefits with respect to any
 employee.  The only severance agreements or severance policies applicable
 to the Representing Party or any of its Subsidiaries are the agreements and
 policies specifically described in Section 4.7(a) of the Representing
 Party's Disclosure Schedule.

        (b)  With respect to each of its Plans, the Representing Party has
 heretofore made available to the other Representing Party complete and
 correct copies of each of the following documents, as applicable: (i) a
 copy of the Plan and any amendments thereto; (ii) a copy of the most recent
 annual report; (iii) a copy of the most recent actuarial report; (iv) a
 copy of the most recent Summary Plan Description and all material
 modifications; (v) a copy of the trust or other funding agreement and any
 amendments thereto; and (vi) the most recent determination letter received
 from the Internal Revenue Service (the "IRS") with respect to each Plan
 that is intended to be qualified under Section 401 of the Code and all
 notices of reportable events received following receipt of such letter.
 Each Representing Party will deliver to the other Representing Party a copy
 of each Foreign Plan within thirty days following the date hereof.

        (c)  Section 4.7(c) of the Representing Party's Disclosure Schedule
 sets forth a list of each employee of the Representing Party (or any
 Subsidiary) who is a party to any agreement (whether written or oral) with
 respect to such person's employment by the Representing Party or a
 Subsidiary, other than offer letters which do not have guaranteed periods
 of employment and statutory employment agreements  under foreign Laws, and
 which provide for annual compensation in excess of $100,000.  The
 Representing Party has made available to the other Representing Party a
 complete and correct copy of each such written employment agreement and a
 complete and correct summary of each such oral agreement.

        (d)  No liability under Title IV of ERISA has been incurred by the
 Representing Party or any ERISA Affiliate within the past six years that
 has not been satisfied in full.  To the best knowledge of the Representing
 Party, no condition exists that presents a material risk to the
 Representing Party, any of its Subsidiaries or any ERISA Affiliate of
 incurring a liability under such Title that is reasonably likely to have a
 Material Adverse Effect on the Representing Party.  The Pension Benefit
 Guaranty Corporation has not instituted proceedings to terminate any of the
 Employee Benefit Plans, and, to the knowledge of the Representing Party, no
 condition exists that presents a material risk that such proceedings will
 be instituted.  Except as would not have a Material Adverse Effect on the
 Representing Party, with respect to each of the Employee Benefit Plans that
 is subject to Title IV of ERISA, the present value of accrued benefits
 under such Employee Benefit Plan, based upon the actuarial assumptions used
 for funding purposes in the most recent actuarial report prepared by such
 Employee Benefit Plan's actuary with respect to such Employee Benefit Plan,
 did not, as of its latest valuation date, exceed the then current value of
 the assets of such Employee Benefit Plan allocable to such accrued
 benefits, and there have been no changes since such latest valuation date
 which would cause the present value of such accrued benefits to exceed the
 current value of such assets.  None of the Employee Benefit Plans or any
 trust established thereunder has incurred any "accumulated funding
 deficiency" (as defined in Section 302 of ERISA and Section 412 of the
 Code), whether or not waived, as of the last day of the most recent fiscal
 year of each of the Employee Benefit Plans ended prior to the date of this
 Agreement.  None of the Employee Benefit Plans is a Multiemployer Plan.  To
 the knowledge of the Representing Party each of the Employee Benefit Plans
 that is intended to be "qualified" within the meaning of Section 401(a) of
 the Code is so qualified and the trusts maintained thereunder are exempt
 from taxation under Section 501(a) of the Code.  Except as set forth in
 Section 4.7(d) of the ASARCO Disclosure Schedule, no Employee Benefit Plan
 provides benefits, including without limitation death or medical benefits
 (whether or not insured), with respect to current or former employees after
 retirement or other termination of service (other than coverage mandated by
 applicable Law or benefits, the full cost of which is borne by the current
 or former employee).  There are no material pending or threatened claims by
 or on behalf of any Employee Benefit Plan, by any employee or beneficiary
 covered under any such Employee Benefit Plan, or otherwise involving any
 such Employee Benefit Plan (other than routine claims for benefits).  No
 prohibited transaction has occurred with respect to any Employee Benefit
 Plan that would result, directly or indirectly, in the imposition of an
 excise Tax or other liability under the Code or ERISA, except for such a
 Tax or other liability that would not have a Material Adverse Effect.
 Except as would not have a Material Adverse Effect on the Representing
 Party, with respect to each Foreign Plan:  (i) all amounts required to be
 reserved on account of each Foreign Plan have been so reserved in
 accordance with reasonable accounting practices prevailing in the country
 where such Foreign Plan is established, and (ii) each Foreign Plan required
 to be registered with a Governmental Entity has been registered, has been
 maintained in good standing with the appropriate Governmental Entities, and
 has been maintained and operated in accordance with its terms and
 applicable Law.

        (e)  Except as set forth in Section 4.7(a) and (d) of the ASARCO
 Disclosure Schedule no director or officer or other employee of such
 Representing Party will become entitled to any termination, retirement,
 severance or similar payment, benefit or enhanced or accelerated benefit
 (including any acceleration of vesting or lapse of restrictions, repurchase
 rights or obligations with respect to any employee stock option or other
 benefit under any stock option plan or incentive or compensation plan or
 arrangement) as a result of the transactions contemplated by this Agreement
 (either standing alone or in conjunction with any additional or subsequent
 events).

        (f)  Except as set forth in Section 4.7(f) of the ASARCO Disclosure
 Schedule, any amount or other entitlement that could be received (whether
 in cash or property or the vesting of property) as a result of any of the
 transactions contemplated by this Agreement by any employee, officer or
 director of the Representing Party or any of its affiliates who is a
 "disqualified individual" (as such term is defined in proposed Treasury
 Regulation Section 1.280G-1) under any employee benefit plan or other
 compensation arrangement currently in effect would not be characterized as
 an "excess parachute payment" or a "parachute payment" (as such terms are
 defined in Section 280G(b)(1) of the Code).

        (g)  As used in this Agreement

   (i)  "Employee Benefit Plan" means any material Plan entered into,
   established, maintained, sponsored, contributed to or required to be
   contributed to by the Representing Party, any of its Subsidiaries or
   ERISA Affiliates for the benefit of the current or former employees or
   directors of the Representing Party or any of its Subsidiaries and
   existing on the date of this Agreement or at any time subsequent thereto
   and on or prior to the Effective Time;

   (ii) "Foreign Plan" shall refer to each material plan, program or
   contract that is subject to or governed by the Laws of any jurisdiction
   other than the United States, and which would have been treated as an
   Employee Benefit Plan had it been a United States plan, program or
   contract;

   (iii)  "Plan" means any employment, bonus, incentive compensation,
   deferred compensation, pension, profit sharing, retirement, stock
   purchase, stock option, stock ownership, stock appreciation rights,
   phantom stock, leave of absence, layoff, vacation, day or dependent
   care, legal services, cafeteria, life, health, medical, accident,
   disability, worker's compensation or other insurance, severance,
   separation, termination, change of control or other benefit plan,
   agreement, practice policy, program or arrangement of any kind, whether
   written or oral, other than a Foreign Plan, including, but not limited
   to any "employee benefit plan" within the meaning of Section 3(3) of the
   Employee Retirement Income Security Act of 1974, as amended, and the
   rules and regulations thereunder ("ERISA"); and

   (iv) "ERISA Affiliate" means, with respect to any Representing Party,
   any entity, trade or business that is a member of the same controlled
   group as such Representing Party (within the meaning of Sections 414(b),
   (c), (m) or (o) of the Code).

        Section 4.8  Information Statement; Registration Statement; Other
 Information.  None of the information with respect to the Representing
 Party or its Subsidiaries to be included in the Schedule 14D-9, the Tender
 Offer Statement on Schedule 14D-1 (together with all amendments and
 supplements thereto, the "Schedule 14D-1"), the Information Statement or
 the Registration Statement will, in the case of the Information Statement,
 the Schedule 14D-9, Schedule 14D-1, or any amendments or supplements
 thereto at the time that such document is mailed, and at the time of the
 Parent Shareholders Meeting and the ASARCO Shareholders Meeting, or, in the
 case of the Registration Statement, at the time it becomes effective,
 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 the
 Representing Party with respect to information supplied in writing by the
 other Representing Party or any of its affiliates specifically for
 inclusion in the Information Statement.  The Information Statement will
 comply as to form in all material respects with the provisions of the
 Exchange Act and the rules and regulations promulgated thereunder.  The
 letters to shareholders, notices of meeting, information statement and
 forms of proxies to be distributed to shareholders in connection with the

 ASARCO Merger and any schedules required to be filed with the SEC in
 connection therewith are collectively referred to herein as the
 "Information Statement."

        Section 4.9  ASARCO Rights Plan. ASARCO represents and warrants
 that the Board of Directors of ASARCO has taken all necessary action to
 render the Rights Agreement dated as of July 26, 1989, as amended, between
 ASARCO and First Chicago Trust Company of New York and the Rights Agreement
 between ASARCO and The Bank of New York, dated as of January 28, 1998,
 inapplicable to the transactions contemplated by this Agreement.

        Section 4.10  Tax Matters.

        (a)  All federal, state, local and foreign Tax Returns required to
 be filed by or on behalf of the Representing Party, each of its
 Subsidiaries, and each affiliated, combined, consolidated or unitary group
 of which the Representing Party or any of its Subsidiaries (i) is a member
 (a "Current Representing Party Group") or (ii) was a member during six
 years prior to the date hereof but is not currently a member, but only
 insofar as any such Tax Return relates to a taxable period ending on a date
 within the last six years (a "Past Representing Party Group," together with
 Current Representing Party Groups, a "Representing Party Affiliated Group")
 have been timely filed, and all such Tax Returns filed are complete and
 accurate except to the extent any failure to file or any inaccuracies in
 filed Tax Returns would not, individually or in the aggregate, have a
 Material Adverse Effect on such Representing Party (it being understood
 that the representations made in this Section, to the extent that they
 relate to Past Representing Party Groups, are made to the knowledge of the
 Representing Party).  All Taxes due and owing by the Representing Party,
 any Subsidiary of the Representing Party or any Representing Party
 Affiliated Group have been paid, or adequately reserved for, except to the
 extent any failure to pay or reserve would not, individually or in the
 aggregate, have a Material Adverse Effect on the Representing Party.  There
 is no audit examination, deficiency, refund litigation, proposed adjustment
 or matter in controversy with respect to any Taxes due and owing by the
 Representing Party, any Subsidiary of the Representing Party or any
 Representing Party Affiliated Group which would, individually or in the
 aggregate, have a Material Adverse Effect on the Representing Party.  All
 assessments for Taxes due and owing by the Representing Party, any
 Subsidiary of the Representing Party or any Representing Party Affiliated
 Group with respect to completed and settled examinations or concluded
 litigation have been paid.  As soon as practicable after the public
 announcement of the execution of the Merger Agreement, the Representing
 Party will provide the other party with written schedules of (i) the
 taxable years of the Representing Party for which the statutes of
 limitations with respect to federal income Taxes have not expired, and (ii)
 with respect to federal income Taxes, those years for which examinations
 have been completed, those years for which examinations are presently being
 conducted, and those years for which examinations have not yet been
 initiated.  The Representing Party and each of its Subsidiaries have
 complied in all material respects with all rules and regulations relating
 to the withholding of Taxes, except to the extent any such failure to
 comply would not, individually or in the aggregate, have a Material Adverse
 Effect on the Representing Party.

        (b)  Neither the Representing Party nor any of its Subsidiaries has
 (i) entered into a closing agreement or similar agreement with a taxing
 authority relating to Taxes of the Representing Party or any of its
 Subsidiaries with respect to a taxable period for which the statute of
 limitations is still open, or (ii) with respect to U.S. federal income
 Taxes, granted any waiver of any statute of limitations with respect to, or
 any extension of a period for the assessment of, any such income Tax, in
 either case, that is still outstanding.  There are no Encumbrances relating
 to Taxes upon the assets of the Representing Party other than Encumbrances
 relating to Taxes not yet due, except as would not have a Material Adverse
 Effect on the Representing Party.  Neither the Representing Party nor any
 of its Subsidiaries is a party to any agreement relating to the allocating
 or sharing of Taxes, other than an agreement with each other.

        (c)  Neither the Representing Party nor any of its Subsidiaries
 knows of any fact or has taken any action that could reasonably be expected
 to prevent the ASARCO Merger from constituting a transaction described in
 Section 368(a) of the Code.

 For purposes of this Agreement: (i) "Taxes" means any and all federal,
 state, local, foreign or other taxes of any kind (together with any and all
 interest, penalties, additions to tax and additional amounts imposed with
 respect thereto) imposed by any taxing authority, including, without
 limitation, taxes or other charges on or with respect to income, franchise,
 windfall or other profits, gross receipts, property, sales, use, severance,
 capital stock, payroll, employment, social security, workers' compensation,
 unemployment compensation, or net worth, and taxes or other charges in the
 nature of excise, withholding, ad valorem or value added, and (ii) "Tax
 Return" means any return, report or similar statement (including the
 attached schedules) required to be filed with respect to any Tax,
 including, without limitation, any information return, claim for refund,
 amended return or declaration of estimated Tax.

        Section 4.11  Opinion of Financial Advisors.

        (a)  The Board of Directors of ASARCO has received the opinion of
 Credit Suisse First Boston Corporation, dated the date of this Agreement,
 substantially to the effect that, as of such date, the consideration to be
 received by holders of ASARCO Common Stock in the ASARCO Offer and the
 ASARCO Merger, is fair to the holders of ASARCO Common Stock from a
 financial point of view.

        (b)  The Board of Directors of Parent has received the opinion of
 Morgan Stanley & Co. Incorporated., dated the date of this Agreement,
 substantially to the effect that, as of such date, the consideration to be
 paid by Parent pursuant to this Agreement is fair to Parent from a
 financial point of view.

        Section 4.12  Required Vote.

        (a)  The affirmative vote of the holders of shares of Parent Common
 Stock representing a majority of the shares voting at the Parent
 Shareholders Meeting, provided that at least 50% of the outstanding Parent
 Common Stock that is entitled to vote, votes at the Parent Shareholders
 Meeting (the "Parent Shareholder Approval"), is required to approve the
 Share Issuance.  No other vote of the shareholders of Parent is required by
 Law, the Certificate of Incorporation or the Bylaws of Parent or otherwise
 in order for Parent to consummate the ASARCO Merger and the transactions
 contemplated hereby.

        (b)  The affirmative vote of the holders of 80% of the outstanding
 shares of ASARCO Common Stock entitled to vote at the ASARCO Shareholders
 Meeting (the "ASARCO Shareholder Approval") is required to approve this
 Agreement.  No other vote of the shareholders of ASARCO is required by Law,
 the Certificate of Incorporation or the Bylaws of ASARCO or otherwise in
 order for ASARCO to consummate the ASARCO Merger and the transactions
 contemplated hereby.

        Section 4.13  Absence of Certain Changes.  Except as set forth in
 Section 4.13 of the ASARCO Disclosure Schedule, since December 31, 1998,
 and, other than with respect to clause (a) below, prior to the date hereof,
 except as set forth in the Representing Party's (or any of its
 Subsidiaries') SEC Reports filed prior to the date hereof, the Representing
 Party and its Subsidiaries have conducted their respective businesses in
 the ordinary course, consistent with past practice and there has not been:

        (a)  any event, occurrence or development (including the discovery
 of new or additional information concerning an existing environmental
 condition) which, individually or in the aggregate, would have a Material
 Adverse Effect on the Representing Party;

        (b)  any declaration, setting aside or payment of any dividend or
 other distribution with respect to any shares of capital stock of the
 Representing Party (other than regular quarterly cash dividends payable by
 the Representing Party in respect of shares of its capital stock consistent
 with past practice) or any repurchase, redemption or other acquisition by
 the Representing Party or any of its Subsidiaries of any outstanding shares
 of its capital stock (except (x) as required by the terms of any employee
 or stock option plan or compensation plan or arrangement, (y) in accordance
 with any dividend reinvestment plan as in effect as of the date of this
 Agreement in the ordinary course of operation of such plan consistent with
 past practice, and/or (z) as otherwise permitted by Section 5.1);

        (c)  any amendment of any material term of any outstanding security
 of the Representing Party or any of its Subsidiaries;

        (d)  any transaction or commitment made, or any contract, agreement
 or settlement entered into, by (or judgment, order or decree affecting) the
 Representing Party or any of its Subsidiaries relating to its assets or
 business (including the acquisition or disposition of any material amount
 of assets) or any relinquishment by the Representing Party or any of its
 Subsidiaries of any contract or other right, in either case, material to
 the Representing Party and its Subsidiaries taken as a whole, other than
 transactions, commitments, contracts, agreements or settlements (including
 without limitation settlements of litigation and tax proceedings) in the
 ordinary course of business consistent with past practice and those
 contemplated by this Agreement;

        (e)  any change prior to the date hereof in any method of
 accounting or accounting practice by the Representing Party or any of its
 Subsidiaries, except for any such change which is not material or which is
 required by reason of a concurrent change in GAAP;

        (f)  any (i) grant of any severance or termination pay to (or
 amendment to any such existing arrangement with) any director, officer or
 employee of the Representing Party or any of its Subsidiaries, (ii)
 entering into of any employment, deferred compensation, supplemental
 retirement or other similar agreement (or any amendment to any such
 existing agreement) with any director, officer or employee of the
 Representing Party or any of its Subsidiaries, (iii) increase in, or
 accelerated vesting and/or payment of, benefits under any existing
 severance or termination pay policies or employment agreements or (iv)
 increase in or enhancement of any rights or features related to
 compensation, bonus or other benefits payable to directors, officers or
 employees of the Representing Party or any of its Subsidiaries, in each
 case, other than in the ordinary course of business consistent with past
 practice or as permitted by this Agreement; or

        (g)  any material Tax election made or changed, any material audit
 settled or any material amended Tax Returns filed.

        Section 4.14  No Undisclosed Material Liabilities.  There are no
 liabilities of the Representing Party or any Subsidiary of the Representing
 Party of any kind whatsoever, whether accrued, contingent, absolute,
 determined or determinable, other than:

        (a)  liabilities which,  individually or in the aggregate, would
 not have a Material Adverse Effect on the Representing Party;

        (b)  liabilities disclosed in the SEC Reports of the Representing
 Party or except as disclosed pursuant to Section 4.6 hereof; and

        (c)  liabilities under or arising as a result of this Agreement.

        Section 4.15  Labor Relations.  As of the date of this Agreement:
 (i) Section 4.15 of the Representing Party's Disclosure Schedule sets forth
 a complete list of each collective bargaining agreement to which the
 Representing Party or any of its Subsidiaries is a party, (ii) no labor
 organization or group of employees of the Representing Party (or any of its
 Subsidiaries) has made a pending demand for recognition or certification,
 and there are no representation or certification proceedings or petitions
 seeking a representation proceeding presently pending or, to the knowledge
 of the Representing Party, threatened to be brought or filed, with the
 National Labor Relations Board or any other labor relations tribunal or
 authority, and (iii) there are no organizing activities, strikes, work
 stoppages, slowdowns, lockouts, material arbitrations or material
 grievances, or other material labor disputes pending or, to the knowledge
 of the Representing Party, threatened against or involving the Representing
 Party or any of its Subsidiaries.

        Section 4.16  No Prior Activities.  SubA was formed for the purpose
 of  effecting a business combination with ASARCO, and does not have any
 Subsidiaries and has not  undertaken any business or other activities other
 than in connection with pursuing such business combination and entering
 into this Agreement and engaging in the transactions contemplated hereby.


                                  ARTICLE V
                          COVENANTS AND AGREEMENTS

        Section 5.1  Conduct of Business Pending the Effective Time.  From
 and after the date hereof and prior to the Effective Time or the date, if
 any, on which this Agreement is earlier terminated pursuant to Section 7.1
 (the "Termination Date"), and except as may be agreed in writing by the
 other parties hereto or as may be provided for or permitted pursuant to
 this Agreement:

        (a)  each of the parties shall, and shall cause each of its
 Subsidiaries to, conduct its operations according to their ordinary and
 usual course of business in substantially the same manner as heretofore
 conducted;

        (b)  each of the parties shall use its reasonable best efforts, and
 cause each of its Subsidiaries to use its reasonable best efforts, to
 preserve intact its business organizations and goodwill, keep available the
 services of its current officers and other key employees and preserve its
 relationships with those persons having business dealings with it
 (including its relationships with customers, suppliers, employees and
 business partners);

        (c)  each of the parties shall confer at such times as any of the
 other parties may reasonably request with one or more representatives of
 such requesting party to report material operational matters and the
 general status of ongoing operations (to the extent such requesting party
 reasonably requires such information);

        (d)  each of the parties shall notify the other parties of any
 emergency or other change in the normal course of its or its Subsidiaries'
 respective businesses or in the operation of its or its Subsidiaries,
 respective properties and of any complaints or hearings (or communications
 indicating that the same may be contemplated) of any Governmental Entity if
 such emergency, change, complaint, investigation or hearing would have a
 Material Adverse Effect on such party;

        (e)  none of the parties shall, and none of the parties shall
 permit any of its Subsidiaries to, (i) declare, set aside, authorize or pay
 any dividends on or make any distribution with respect to its outstanding
 shares of stock, except in the case of Parent for regular quarterly cash
 dividends on the outstanding shares of Parent Common Stock and in the case
 of ASARCO and its majority owned subsidiary Southern Peru Copper
 Corporation for regular quarterly cash dividends on the outstanding shares
 of their common stock and except for cash dividends by a wholly owned
 Subsidiary to a parent, or (ii) split, combine or reclassify any of its
 shares of capital stock;

        (f)  none of the parties shall, and none of the parties shall
 permit any of its Subsidiaries to, except (i) in the ordinary course of
 business consistent with past practice, (ii) as otherwise provided in this
 Agreement or (iii) as required by applicable Law, adopt or amend any
 Employee Benefit Plan;

        (g)  none of the parties shall, and none of the parties shall
 permit any of its Subsidiaries to, authorize, propose or announce an
 intention to authorize or propose, or enter into an agreement with respect
 to, any merger, consolidation or business combination (other than the
 ASARCO Offer  and the ASARCO Merger and for Parent's Offer to purchase all
 of the outstanding shares of common stock of Cyprus Amax Minerals Company
 and the related merger of Cyprus Amax Minerals Company with a Subsidiary of
 Parent), any acquisition of a material amount of assets or securities, any
 disposition of a material amount of assets or securities or any release or
 relinquishment of any material contract rights, in each case not in the
 ordinary course of business;

        (h)  none of the parties shall, and none of the parties shall
 permit its Subsidiaries to, propose or adopt any amendments to its
 certificate of incorporation or by-laws or other similar governing
 documents;

        (i)  none of the parties shall, and none of the parties shall
 permit any of its Subsidiaries to, issue or authorize the issuance of, or
 agree to issue or sell any shares of their capital stock of any class
 (whether through the issuance or granting of options, warrants,
 commitments, subscriptions, rights to purchase or otherwise), except for
 the issuance of shares of Parent Common Stock by Parent and ASARCO Common
 Stock by ASARCO upon the exercise of stock options or other rights to
 acquire such party's capital stock, in each case which securities, options
 and rights are outstanding as of the date of this Agreement and such
 issuance is made in accordance with the terms of such securities, options
 and rights in effect on the date of this Agreement;

        (j)  none of the parties shall, and none of the parties shall
 permit any of its Subsidiaries to, except in the ordinary course of
 business in connection with employee incentive and benefit plans, programs
 or arrangements in existence on the date hereof, purchase or redeem any
 shares of its stock or any rights, warrants or options to acquire any such
 shares;

        (k)  none of the parties shall, and none of the parties shall
 permit any of its Subsidiaries to, incur, assume or prepay any indebtedness
 or any other material liabilities, other than indebtedness between such
 party and a wholly owned Subsidiary or between wholly owned Subsidiaries,
 provided, in either such case, such wholly owned Subsidiaries remain wholly
 owned Subsidiaries, and other than in the ordinary course of business
 consistent with past practice;

        (l)  none of the parties shall, and none of the parties shall
 permit any of its Subsidiaries to, sell, lease, license, mortgage or
 otherwise encumber or subject to any Encumbrance or otherwise dispose of
 any of its properties or assets (including securitizations), other than in
 the ordinary course of business consistent with past practice and other
 than the consummation of contracts of sale executed and delivered prior to
 the date hereof;

        (m)  none of the parties shall, and none of the parties shall
 permit any of its Subsidiaries to, take any action that would reasonably be
 expected to cause the ASARCO Merger not to constitute a transaction
 described in Section 368(a) of the Code;

        (n)  none of the parties shall, and none of the parties shall
 permit any of its Subsidiaries to make any material Tax election or settle
 or compromise any material Tax liability, other than in the ordinary course
 of business consistent with past practice; and

        (o)  none of the parties shall, and none of the parties shall
 permit any of its Subsidiaries to, agree, in writing or otherwise, to take
 any of the foregoing actions or take any action which would (i) make any
 representation or warranty made by such party in Article IV hereof untrue
 or incorrect or (ii) result in any of the conditions to the ASARCO Merger
 set forth in Article VI not being satisfied.

        Section 5.2  Investigation.

        (a)  Each of Parent and ASARCO shall (and shall cause its
 respective Subsidiaries to) afford to one another and to one another's
 officers, employees, accountants, counsel and other authorized
 representatives full and complete access on reasonable prior notice during
 normal business hours, throughout the period prior to the earlier of the
 Effective Time or the Termination Date, to its and its Subsidiaries'
 properties, contracts, commitments, books, and records (including but not
 limited to Tax Returns) and any report, schedule or other document filed or
 received by it or any of its Subsidiaries pursuant to the requirements of
 federal or state securities laws or filed with or sent to the SEC, the
 Department of Justice, the Federal Trade Commission or any other
 Governmental Entity and shall use their reasonable best efforts to cause
 their respective representatives and Subsidiaries to furnish promptly to
 one another such additional financial and operating data and other
 information as to its and its Subsidiaries' respective businesses and
 properties as the other or its duly authorized representatives may from
 time to time reasonably request; provided, that nothing herein shall
 require either Parent or ASARCO or any of their respective Subsidiaries to
 disclose any information to the other that would cause significant
 competitive harm to such disclosing party or its affiliates if the
 transactions contemplated by this Agreement are not consummated.
 Notwithstanding any provision of this Agreement to the contrary, no party
 shall be obligated to make any disclosure in violation of applicable Laws.

        (b)  Parent and ASARCO will not, and will cause their respective
 officers, employees, accountants, counsel and representatives not to, use
 any information obtained pursuant to this Section 5.2 for any purpose
 unrelated to the consummation of the transactions contemplated by this
 Agreement.  Pending consummation of the transactions herein contemplated,
 each of Parent and ASARCO will keep confidential, and will cause their
 respective officers, employees, accountants, counsel and representatives to
 keep confidential, all information and documents obtained pursuant to this
 Section 5.2 unless such information (i) was already known to it, (ii)
 becomes available to it from other sources not known by it to be bound by a
 confidentiality obligation, (iii) is independently acquired by it as a
 result of work carried out by any of its employees or representatives to
 whom no disclosure of such information has been made, (iv) is disclosed
 with the prior written approval of the other party or (v) is or becomes
 readily ascertainable from published information or trade sources.  Upon
 any termination of this Agreement, each party will, upon request, collect
 and deliver to the other party all documents obtained by it or any of its
 officers, employees, accountants, counsel and representatives then in their
 possession and any copies thereof.

        Section 5.3  Shareholder Approvals and Other Cooperation.

        (a)  If required by applicable Law, as soon as practicable
 following consummation of the ASARCO Offer, Parent and ASARCO shall
 together, or pursuant to any reasonable allocation of responsibility
 between them:

   (i)  prepare and file confidentially with the SEC as soon as is
   reasonably practicable the Information Statement in preliminary form and
   promptly prepare and cause Parent to file with the SEC a registration
   statement on Form S-4 under the Securities Act with respect to the
   Parent Common Stock issuable in the ASARCO Merger (or, to the extent
   practicable, to amend as necessary the Registration Statement of Parent
   on Form S-4 (Reg. No. 333-86063), which was declared effective by the
   SEC on September 2, 1999 with respect to the Parent Common Stock) (the
   "Registration Statement"), and shall use their reasonable best efforts
   to have the Information Statement cleared by the SEC under the Exchange
   Act and the Registration Statement declared effective by the SEC under
   the Securities Act;

   (ii) as soon as is reasonably practicable cause Parent to take all such
   action as may be required under state blue sky or securities laws in
   connection with the issuance of shares of Parent Common Stock in the
   ASARCO Merger and as contemplated by this Agreement;

   (iii) promptly prepare and file with the NYSE and such other stock
   exchanges as shall be agreed upon listing applications covering the
   shares of Parent Common Stock issuable in the ASARCO Merger, upon
   exercise of ASARCO stock options, warrants, conversion rights or other
   rights or vesting or payment of other ASARCO equity-based awards and use
   its reasonable best efforts to obtain, prior to the Effective Time,
   approval for the listing of such Parent Common Stock, subject only to
   official notice of issuance;

   (iv) cooperate with one another in order to lift any injunctions or
   remove any other impediment to the consummation of the transactions
   contemplated herein; and

   (v)  cooperate with one another in obtaining (i) an opinion  of Shearman
   & Sterling, special counsel to Parent, dated as of the date of the
   Effective Time, to the effect that the ASARCO Merger will qualify as a
   transaction described in Section 368(a) of the Code, and (ii) an opinion
   of Skadden, Arps, Slate, Meagher & Flom LLP, special counsel to ASARCO,
   dated as of the date of the Effective Time, to the effect that the
   ASARCO Merger will qualify as a transaction described in Section  368(a)
   of the Code.  In connection therewith, each of ASARCO and Parent shall
   deliver to Shearman & Sterling and Skadden, Arps, Slate, Meagher & Flom
   LLP customary representation letters in form and substance reasonably
   satisfactory to such special counsel and Parent and ASARCO shall use
   their reasonable best efforts to obtain any representation letters
   drafted by their special counsel from their respective appropriate
   shareholders and shall deliver any such letters obtained to Shearman &
   Sterling and Skadden, Arps, Slate, Meagher & Flom LLP (the
   representation letters referred to in this sentence are collectively,
   the "Tax Certificates").

        (b)  Subject to the limitations contained in Section 5.2, Parent
 and ASARCO shall each furnish to one another and to one another's counsel
 all such information as may be required in order to effect the foregoing
 actions and each represents and warrants to the other that no information
 furnished by it in connection with such actions or otherwise in connection
 with the consummation of the transactions contemplated by this Agreement
 will contain any untrue statement of a material fact or omit to state a
 material fact required to be stated in order to make any information so
 furnished, in light of the circumstances under which it is so furnished,
 not misleading.

        (c)  (i)  Parent shall cause an appropriate supplement to the
 Phelps Dodge Proxy Statement to be mailed to Parent's shareholders, and
 ASARCO shall cause the Information Statement to be mailed to ASARCO's
 shareholders, in each case as promptly as practicable after the
 Registration Statement is declared effective under the Securities Act.

   (ii) Parent shall hold a meeting of its stockholders (the "Parent
   Shareholder Meeting") as provided in the Phelps Dodge Proxy Statement
   dated September 13, 1999 as supplemented by the Proxy Statement
   Supplement dated September 22, 1999 (as the same may be further amended
   or supplemented, the "Phelps Dodge Proxy Statement") for the purpose of
   obtaining the Parent Shareholder Approval.  Parent shall, through its
   Board of Directors, recommend to its shareholders the approval of the
   Share Issuance and the other transactions contemplated hereby unless the
   Board of Directors of Parent determines in good faith, after
   consultation with outside counsel, that to do so would be inconsistent
   with its fiduciary duties under applicable Law.  Notwithstanding
   anything herein to the contrary, in the event that Parent, SubA or any
   other subsidiary of Parent shall acquire at least 90% of the outstanding
   shares of each class of capital stock of ASARCO, pursuant to the ASARCO
   Offer or otherwise, the parties hereto agree to take all necessary and
   appropriate action to cause the ASARCO Merger to become effective as
   soon as practicable after such acquisition, without a meeting of ASARCO
   shareholders, in accordance with Section 14A:10-5.1 of the NJBCA and
   Section 253 of the DGCL.

   (iii) ASARCO shall, as soon as practicable following the date of
   this Agreement, duly call, give notice of, convene and hold a meeting of
   its shareholders (the "ASARCO Shareholders Meeting") for the purpose of
   obtaining the ASARCO Shareholder Approval.  ASARCO shall, through its
   Board of Directors, subject to the last sentence of Section 5.9(b),
   recommend to its shareholders the adoption of this Agreement, the ASARCO
   Merger and the other transactions contemplated hereby.

   (iv) Each of Parent and ASARCO will use their best efforts to hold the
   Parent Shareholders Meeting and the ASARCO Shareholders Meeting as soon
   as practicable after the date hereof.

        (d)  Parent shall vote, or cause to be voted, all of the shares of
 ASARCO Common Stock then owned by it or any of its Subsidiaries in favor of
 the approval and adoption of this Agreement.

        Section 5.4  Affiliate Agreements.

        ASARCO shall, as soon as practicable, deliver to Parent a list
 (reasonably satisfactory to counsel for Parent) setting forth the names and
 addresses of all persons who will be, at the time of the ASARCO
 Shareholders Meeting, in ASARCO's reasonable judgment, "affiliates" of
 ASARCO for purposes of Rule 145 under the Securities Act.  ASARCO shall
 furnish such information and documents as Parent may reasonably request for
 the purpose of reviewing such list.  ASARCO shall use its reasonable best
 efforts to cause each person who is identified as an "affiliate" in the
 list furnished pursuant to this Section 5.4 to execute a written agreement
 on or prior to the mailing of the Joint Proxy Statement, in substantially
 the form of Exhibit A hereto.

        Section 5.5  ASARCO Employee Stock Options, Incentive and Benefit
 Plans.

        (a)  Simultaneously with the ASARCO Merger, (i) each outstanding
 option ("ASARCO Stock Options") and related stock appreciation right
 ("ASARCO SAR"), if any, to purchase or acquire a share of ASARCO Common
 Stock under employee incentive or benefit plans, programs or arrangements
 and non-employee director plans presently maintained by ASARCO ("ASARCO
 Option Plans") shall be converted into an option (together with a related
 stock appreciation right of ASARCO, if applicable) to purchase the number
 of shares of Parent Common Stock equal to 0.50266, times the number of
 shares of ASARCO Common Stock which could have been obtained prior to the
 Effective Time upon the exercise of each such option, at an exercise price
 per share equal to the exercise price for each such share of ASARCO Common
 Stock subject to an option (and related ASARCO SAR, if any) under the
 ASARCO Option Plans divided by 0.50266, and all references in each such
 option (and related ASARCO SAR, if any) to ASARCO shall be deemed to refer
 to Parent, where appropriate, and (ii) Parent shall assume the obligations
 of ASARCO under the ASARCO Option Plans.  The other terms of each such
 ASARCO Stock Option and ASARCO SAR, and the plans under which they were
 issued, shall continue to apply in accordance with their terms, including
 any provisions providing for acceleration of vesting or payment.

        (b)  Simultaneously with the ASARCO Merger, each outstanding award
 including restricted stock and phantom stock or common stock equivalents
 ("ASARCO Award") under any employee incentive or benefit plans, programs or
 arrangements and non-employee director plans presently maintained by ASARCO
 which provide for grants of equity-based awards shall be amended or
 converted into a similar instrument of Parent, in each case with such
 adjustments to the terms of such ASARCO Awards as are appropriate to
 preserve the value inherent in such ASARCO Awards with no detrimental
 effects on the holders thereof.  The other terms of each ASARCO Award, and
 the plans or agreements under which they were issued, shall continue to
 apply in accordance with their terms, including any provisions providing
 for acceleration of vesting or payment.  With respect to any restricted
 stock awards as to which the restrictions shall have lapsed on or prior to
 the Effective Time in accordance with the terms of the applicable plans or
 award agreements, shares of such previously restricted stock shall be
 converted in accordance with the provisions of Section 3.1(b).

        (c)  Prior to the Effective Time, ASARCO shall amend each of its
 employee incentive or benefit plans, programs and arrangements and non-
 employee director plans, to the extent necessary and appropriate, to
 reflect the transactions contemplated by this Agreement, including, but not
 limited to the conversion of shares of ASARCO Common Stock held or to be
 awarded or paid pursuant to such benefit plans, programs or arrangements
 into shares of Parent Common Stock on a basis consistent with the
 transactions contemplated by this Agreement.  At or prior to the Effective
 Time, Parent shall take all corporate action necessary to reserve for
 issuance a sufficient number of shares of Parent Common Stock for delivery
 upon exercise of the ASARCO Stock Options.  As soon as practicable after
 the Effective Time, Parent shall file a registration statement on Form S-3
 or Form S-8, as the case may be (or any successor or other appropriate
 forms), with respect to the Parent Common Stock subject to such ASARCO
 Stock Options, and shall maintain the effectiveness of such registration
 statement and the current status of the prospectus or prospectuses
 contained therein, for so long as such ASARCO Stock Options remain
 outstanding.

        (d)  Parent and its Subsidiaries and affiliates agree to honor in
 accordance with their terms the ASARCO Employee Benefit Plans, including,
 without limitation, any rights or benefits arising thereunder as a result
 of the transactions contemplated by this Agreement (either alone or in
 combination with any other event).  It is the intention of the parties
 hereto that, for a period of one year from the Effective Time, Parent and
 its Subsidiaries continue to maintain the ASARCO Employee Benefit Plans, in
 each case in accordance with their terms as in effect at the Effective
 Time, with only such amendments as are required by applicable Law or
 permitted by the terms thereof as in effect at the Effective Time, and
 which do not adversely affect the rights of participants (or their
 beneficiaries) thereunder.

        (e)  Parent shall take, and shall cause the ASARCO Surviving
 Corporation and its Subsidiaries and all other affiliates of Parent to
 take, the following actions:  (i) waive any limitations regarding pre-
 existing conditions and eligibility waiting periods under any welfare or
 other employee benefit plan maintained by any of them for the benefit of
 employees of ASARCO or any of its Subsidiaries immediately prior to the
 Effective Time (the "ASARCO Employees") or in which ASARCO Employees
 participate after the Effective Time, (ii) provide each ASARCO Employee
 with credit for any co-payments and deductibles paid prior to the Effective
 Time for the calendar year in which the Effective Time occurs, in
 satisfying any applicable deductible or out-of-pocket requirements under
 any welfare plans that such employees are eligible to participate in after
 the Effective Time, and (iii) for all purposes under all compensation and
 benefit plans and policies applicable to ASARCO Employees, treat all
 service by ASARCO Employees with ASARCO or any of its Subsidiaries or
 affiliates before the Effective Time as service with Parent and its
 Subsidiaries and affiliates.

        (f)  As of the Effective Time, Parent shall guarantee the
 performance of the employment contracts and ASARCO Employee Benefit Plans
 in accordance with their respective terms and the terms of this Agreement.

        (g)  The parties hereto agree that the transactions contemplated by
 this Agreement shall constitute a "change of control" for purposes of the
 ASARCO Employee Benefit Plans.

        Section 5.6  Filings; Other Action.

        (a)  Subject to the terms and conditions herein provided, Parent
 and ASARCO shall (i) promptly make all filings necessary in connection with
 their respective Required Statutory Approvals and (ii) use reasonable best
 efforts to cooperate with one another in (y) determining whether any
 filings are required to be made with, or consents, permits, authorizations
 or approvals are required to be obtained from, any third party or other
 governmental or regulatory bodies or authorities of federal, state, local
 and foreign jurisdictions in connection with the execution and delivery of
 this Agreement and the consummation of the transactions contemplated hereby
 and thereby and (z) timely making all such filings and timely seeking all
 such consents, permits, authorizations or approvals, including such party's
 Required Third Party Consents.  The parties shall cooperate with one
 another in connection with the making of all such filings, including
 providing copies of all such documents to the non -filing or non-submitting
 party and its advisors prior to filing or otherwise submitting.

        (b)  (i) Without limiting the generality of the undertakings of
 Parent and ASARCO pursuant to Section 5.6(a), Parent agrees to obtain the
 expiration or termination of the applicable waiting periods under the Hart-
 Scott-Rodino Antitrust Improvements Act of 1976, as amended (the "HSR Act")
 (which approval has already been obtained), and applicable foreign Laws
 that are designed or intended to prohibit, restrict or regulate actions
 having the purpose or effect of monopolization, restraint of trade or
 limitation of competition (collectively, "Antitrust Laws"), which
 obligation shall be unconditional and shall be not be qualified by best
 efforts (regardless of whether fulfillment of such obligation would have a
 Material Adverse Effect on Parent or ASARCO).  The existence of the
 conditions set forth in Sections 6.1(a) shall not limit or diminish
 Parent's obligations pursuant to the foregoing sentence or relieve Parent
 of any liability or damages that may result from its breach of its
 obligations under this Section 5.6(b)(i) (nor limit the obligations of
 ASARCO pursuant to the following sentence or relieve ASARCO of any
 liability or damages that may result from its breach of obligations under
 this Section 5.6(b)(i)).  In connection with the foregoing, ASARCO will
 cooperate with and assist Parent, and, with respect to matters that are
 within its power or control will use its reasonable best efforts to
 promptly (i) take, or cause to be taken, all actions and to do, or cause to
 be done, all things necessary, proper or advisable under applicable
 Antitrust Laws to consummate the transactions contemplated by this
 Agreement as soon as practicable, including, without limitation, preparing
 and filing as promptly as practicable all documentation to effect all
 necessary filings, notices, petitions, statements, registrations,
 submissions of information, applications and other documents and (ii)
 obtain and maintain all approvals, consents, registrations, permits,
 authorizations and other confirmations required to be obtained from any
 third party that are necessary, proper or advisable to consummate the
 ASARCO Merger and the other transactions contemplated by this Agreement.
 At Parent's request, ASARCO will commit to and implement any divestiture,
 hold separate or similar transaction or action with respect to any asset or
 business of ASARCO, which commitment and implementation may, at ASARCO's
 option, be conditioned upon and effective as of the Effective Time.
 Subject to applicable Laws relating to the exchange of information, the
 Parent and ASARCO shall have the right to review in advance, and to the
 extent practicable each will consult with the other on, all the information
 relating to their respective Subsidiaries, that appears in any filing made
 with, or written materials submitted to, any third party and/or any
 Governmental Entity in connection with the ASARCO Merger and the other
 transactions contemplated by this Agreement.

   (ii) In furtherance and not in limitation of the foregoing, and to the
 extent that any such action has not heretofore been taken or completed,
 each of Parent and ASARCO agrees to (i) make an appropriate filing of a
 Notification and Report Form pursuant to the HSR Act with respect to the
 transactions contemplated hereby as promptly as practicable and in any
 event within ten business days of the date hereof, (ii) supply as promptly
 as practicable any additional information and documentary material that may
 be requested pursuant to the HSR Act and (iii) complete the review process
 under the HSR Act to permit the consummation of the ASARCO Merger
 including, but not limited to, causing the expiration of termination of the
 applicable waiting periods under the HSR Act as soon as practicable.

        Section 5.7  Further Assurances.  In case at any time after the
 Effective Time any further action is necessary or desirable to carry out
 the purposes of this Agreement, the proper officers and directors of each
 of the parties to this Agreement shall take all such necessary action.

        Section 5.8  Takeover Statute.  If any "fair price," "moratorium,"
 "control share acquisition" or other form of antitakeover statute or
 regulation shall become applicable to the transactions contemplated hereby,
 ASARCO and the members of its  Board of Directors shall grant such
 approvals and take such actions as are reasonably necessary so that the
 transactions contemplated hereby may be consummated as promptly as
 practicable on the terms contemplated hereby and otherwise act to eliminate
 or minimize the effects of such statute or regulation on the transactions
 contemplated hereby.

        Section 5.9  No Solicitation by ASARCO.

        (a)  ASARCO shall not, nor shall it permit any of its Subsidiaries
 to, nor shall it authorize or permit any of its directors, officers or
 employees or any investment banker, financial advisor, attorney, accountant
 or other representative retained by it or any of its Subsidiaries to,
 directly or indirectly through another person, (i) solicit, initiate or
 encourage (including by way of furnishing information), or take any other
 action designed to facilitate, any inquiries or the making of any proposal
 which constitutes any ASARCO Takeover Proposal (or reasonably could be
 expected to lead to a ASARCO Takeover Proposal) or (ii) participate in any
 discussions or negotiations regarding any ASARCO Takeover Proposal;
 provided, however, that if the Board of Directors of ASARCO determines in
 good faith, after consultation with outside counsel, that it is necessary
 to do so in order to comply with its fiduciary duties to ASARCO's
 shareholders under applicable Law, ASARCO may, in response to an ASARCO
 Takeover Proposal which was not solicited by it or which did not otherwise
 result from a breach of this Section 5.9(a), and subject to providing prior
 written notice of its decision to take such action to Parent (the "ASARCO
 Notice") (x) furnish information with respect to ASARCO and its
 Subsidiaries to any person making an ASARCO Takeover Proposal pursuant to a
 customary confidentiality agreement (as determined by ASARCO after
 consultation with its outside counsel) and (y) participate in discussions
 or negotiations regarding such ASARCO Takeover Proposal.  For purposes of
 this Agreement, "ASARCO Takeover Proposal" means any inquiry, proposal or
 offer (or any improvement, restatement, amendment, renewal or reiteration
 thereof) from any person relating to any direct or indirect acquisition or
 purchase of a business or shares of any class of equity securities of
 ASARCO or any of its Subsidiaries, any tender offer or exchange offer that
 if consummated would result in any person beneficially owning any class of
 equity securities of ASARCO or any of its Subsidiaries, or any merger,
 consolidation, business combination, recapitalization, liquidation,
 dissolution or similar transaction involving ASARCO or any of its
 subsidiaries, other than the transactions contemplated by this Agreement.

        (b)  Except as expressly permitted by this Section 5.9, neither the
 Board of Directors of ASARCO nor any committee thereof shall (i) withdraw
 or modify, or propose publicly to withdraw or modify, in a manner adverse
 to Parent, the recommendation by such Board of Directors or such committee
 of the ASARCO Merger or this Agreement, (ii) approve or recommend, or
 propose publicly to approve or recommend, any ASARCO Takeover Proposal, or
 (iii) cause ASARCO to enter into any letter of intent, agreement in
 principle, acquisition agreement or other similar agreement (each, a
 "ASARCO Acquisition Agreement") related to any ASARCO Takeover Proposal.
 Notwithstanding the foregoing, in the event that the Board of Directors of
 ASARCO receives an ASARCO Takeover Proposal and the Board of Directors of
 ASARCO determines in good faith, after consultation with outside counsel,
 that it is necessary to do so in order to comply with its fiduciary duties
 to ASARCO's shareholders under applicable Law, the Board of Directors of
 ASARCO may (x) take any of the actions described in clauses (i), (ii) or
 (iii) above or (y) terminate this Agreement (and concurrently with or after
 such termination, if it so chooses, cause ASARCO to enter into any ASARCO
 Acquisition Agreement with respect to any ASARCO Takeover Proposal) but
 only after the fifth business day following Parent's receipt of written
 notice advising Parent that the Board of Directors of ASARCO is prepared to
 accept an ASARCO Takeover Proposal, specifying the material terms and
 conditions of such ASARCO Takeover Proposal and identifying the person
 making such ASARCO Takeover Proposal.

        (c)  In addition to the obligations of ASARCO set forth in
 paragraphs (a) and (b) of this Section 5.9, ASARCO shall immediately advise
 Parent orally and in writing of any request for information or of any
 ASARCO Takeover Proposal, the material terms and conditions of such request
 or ASARCO Takeover Proposal and the identity of the person making such
 request or ASARCO Takeover Proposal.  ASARCO will keep Parent reasonably
 informed of the status and details (including amendments or proposed
 amendments) of any such request or ASARCO Takeover Proposal.

        (d)  Nothing contained in this Section 5.9 shall prohibit ASARCO
 from taking and disclosing to its shareholders a position contemplated by
 Rule 14e-2(a) promulgated under the Exchange Act or from making any
 disclosure to ASARCO's shareholders if, in the good faith judgement of the
 Board of Directors of ASARCO, after consultation with outside counsel,
 failure so to disclose would be inconsistent with its obligations under
 applicable Law.  At the meeting of the ASARCO Board at which this Agreement
 was considered, authorized and approved, held October 5, 1999, the ASARCO
 Board unanimously declared it advisable that ASARCO's shareholders adopt
 and approve this Agreement.  Notwithstanding any subsequent determination
 by the ASARCO Board to change such recommendation, this Agreement shall be
 submitted to the shareholders of ASARCO at the ASARCO Shareholder Meeting
 for the purpose of obtaining the ASARCO Shareholder Approval and nothing
 contained herein shall be deemed to relieve ASARCO of such obligation.

        Section 5.10  Public Announcements.  Parent and ASARCO will consult
 with and provide each other the reasonable opportunity to review and
 comment upon any press release prior to the issuance of any press release
 relating to this Agreement or the transactions contemplated herein and
 shall not issue any such press release prior to such consultation except as
 may be required by Law or by obligations pursuant to any listing agreement
 with any national securities exchange.

        Section 5.11  Indemnification and Insurance.

        (a)  Parent agrees that all rights to exculpation and
 indemnification for acts or omissions occurring prior to the Effective Time
 now existing in favor of the current or former directors or officers (the
 "ASARCO Indemnified Parties") of ASARCO as provided in its charter or by-
 laws or in any agreement shall survive the ASARCO Merger and shall continue
 in full force and effect in accordance with their terms.  For six years
 from the Effective Time, Parent shall indemnify the ASARCO Indemnified
 Parties to the same extent as such ASARCO Indemnified Parties are entitled
 to indemnification pursuant to the preceding sentence.

        (b)  For three years from the Effective Time, Parent shall maintain
 in effect ASARCO's current directors' and officers' liability insurance
 policy (the "ASARCO Policy"), covering those persons who are covered by the
 ASARCO Policy (a copy of which has been heretofore delivered to Parent);
 provided, however, that in no event shall Parent be required to expend in
 any one year an amount in excess of 150% of the annual premiums to be paid
 by ASARCO for such insurance, and, provided, further, that if the annual
 premiums of such insurance coverage exceed such amount, Parent shall be
 obligated to obtain a policy with the greatest coverage available for a
 cost not exceeding such amount; and provided, further, that Parent may meet
 its obligations under this paragraph by covering the above people under
 Parent's insurance policy or policies on the terms described above.

        Section 5.12  Accountants' "Comfort" Letters.  Parent and ASARCO
 will each use reasonable best efforts to cause to be delivered to each
 other two letters from their respective independent accountants, one dated
 a date within two business days before the date of the Registration
 Statement and one dated a date within two business days before the
 Effective Time, in form and substance reasonably satisfactory to the
 recipient and customary in scope for comfort letters delivered by
 independent accountants in connection with registration statements similar
 to the Registration Statement.

        Section 5.13  Additional Reports.  Parent and ASARCO shall each
 furnish to the other copies of any reports of the type referred to in
 Section 4.5 which it files with the SEC on or after the date hereof, and
 each of Parent and ASARCO, as the case may be, represents and warrants that
 as of the respective dates thereof, such reports will not contain any
 untrue statement of a material fact or omit to state a material fact
 required to be stated therein or necessary to make the statement therein,
 in light of the circumstances under which they were made, not misleading.
 Any unaudited consolidated interim financial statements included in such
 reports (including any related notes and schedules) will fairly present the
 financial position of Parent and its consolidated Subsidiaries or ASARCO
 and its consolidated Subsidiaries, as the case may be, as of the dates
 thereof and the results of operations and changes in financial position or
 other information included therein for the periods or as of the date then
 ended (subject, where appropriate, to normal year-end adjustments), in each
 case in accordance with past practice and GAAP consistently applied during
 the periods involved (except as otherwise disclosed in the notes thereto).

        Section 5.14  Disclosure Schedule Supplements. From time to time
 after the date of this Agreement and prior to the Effective Time, Parent
 will promptly supplement or amend the Parent Disclosure Schedule with
 respect to any matter hereafter arising which, if existing or occurring at
 or prior to the date of this Agreement, would have been required to be set
 forth or described in the Parent Disclosure Schedule or which is necessary
 to correct any information in a schedule or in any representation and
 warranty of Parent which has been rendered inaccurate thereby.  From time
 to time after the date of this Agreement and prior to the Effective Time,
 ASARCO will promptly supplement or amend the ASARCO Disclosure Schedule
 with respect to any matter hereafter arising which, if existing or
 occurring at or prior to the date of this Agreement, would have been
 required to be set forth or described in the ASARCO Disclosure Schedule or
 which is necessary to correct any information  in a schedule or in any
 representation and warranty of ASARCO which has been rendered inaccurate
 thereby.

        Section 5.15  Certain Litigation.  Each of the parties shall prior
 to or at the Effective Time cease, terminate and dismiss, with prejudice,
 any and all actions, proceedings or lawsuits initiated, commenced or filed
 by such party in connection with (i) the Combination and (ii) Parent's
 exchange offer dated as of September 3, 1999, as amended, for ASARCO and
 each of the parties shall use their reasonable best efforts to cause any
 and all actions, proceedings or lawsuits initiated, commenced or filed by
 third parties in connection with the transactions in the above (i) and (ii)
 to cease, terminate or be dismissed, with prejudice.

        Section 5.16  Shareholder Litigation.  Each of Parent and ASARCO
 shall give the other the reasonable opportunity to participate in the
 defense of any shareholder litigation against ASARCO or Parent, as
 applicable, and its directors relating to the transactions contemplated by
 this Agreement.

        Section 5.17  Section 16(b).  Parent and ASARCO shall take all
 steps reasonably necessary to cause the transactions contemplated hereby
 and any other dispositions of equity securities of ASARCO (including
 derivative securities) or acquisitions of Parent equity securities
 (including derivative securities) in connection with this Agreement by each
 individual who is a director or officer of ASARCO to be exempt under Rule
 16b-3 promulgated under the Exchange Act.

        Section 5.18  Change of Control Agreements.

        ASARCO has change of control employment agreements with the 12
 people listed in Section 5.18(a) of the ASARCO Disclosure Schedule which
 provide certain benefits upon a termination of employment other than for
 "cause" or for "good reason" following the Effective Time.  Parent shall
 take all appropriate steps necessary to, and will, give reasonable advance
 notice of its intention to offer employment (including the proposed terms
 thereof), or not to offer employment, to each of the aforementioned 12
 people and will make such offers in the former case, all sufficiently in
 advance of the Effective Time to afford such offerees reasonable time prior
 to the Effective Time to decide whether or not to accept the employment
 offered prior to the Effective Time.  ASARCO has previously made written
 disclosure to Parent for each of such 12 people and for all such people in
 the aggregate of the total estimated amount payable to such people for all
 obligations owed to them by ASARCO under all contractual and plan
 arrangements with such people, assuming that the employment of each such
 person was terminated effective as of December 31, 1999 (except that
 specific benefits are calculated as of specified dates set forth in the
 written disclosure).  The parties hereto agree that the transactions
 contemplated by the Agreement shall constitute a "change of control" for
 purposes of the change of control employment agreements referred to in this
 Section 5.18.


                                 ARTICLE VI
                       CONDITIONS TO THE ASARCO MERGER

        Section 6.1  Conditions to Each Party's Obligation to Effect the
 ASARCO Merger.  The respective obligations of each party to effect the
 ASARCO Merger shall be subject to the fulfillment at or prior to the
 Effective Time of the following conditions:

        (a)  The Parent Shareholder Approval and the ASARCO Shareholder
 Approval shall have been obtained, all in accordance with applicable Law.

        (b)  No statute, rule, regulation, executive order, decree, ruling
 or injunction shall have been enacted, entered, promulgated or enforced by
 any court or other tribunal or governmental body or authority which
 prohibits or makes illegal the consummation of the ASARCO Merger
 substantially on the terms contemplated hereby.  In the event any order,
 decree or injunction shall have been issued, each party shall use its
 reasonable efforts to remove any such order, decree or injunction.

        (c)  SubA shall have accepted for exchange all shares of ASARCO
 Common Stock validly tendered and not withdrawn pursuant to the ASARCO
 Offer; provided, however, that this condition shall not be applicable to
 the obligations of SubA if, in breach of this Agreement, SubA fails to
 accept for exchange and exchange any such shares validly tendered and not
 withdrawn pursuant to the ASARCO Offer.


                                 ARTICLE VII
                      TERMINATION, WAIVER AND AMENDMENT

        Section 7.1  Termination or Abandonment.  This Agreement may be
 terminated at any time prior to the Effective Time, whether before or after
 any approval of the matters presented in connection with the ASARCO Merger
 by the respective shareholders of Parent and ASARCO:

        (a)  by the mutual consent of the Board of Directors of Parent and
 ASARCO;

        (b)  by either Parent or ASARCO if, without fault of such
 terminating party, the purchase of ASARCO Common Stock pursuant to the
 ASARCO Offer shall not have occurred on or before March 31, 2000, which
 date may be extended by mutual written consent of the parties hereto; or

        (c)  by either Parent or ASARCO if any court of competent
 jurisdiction or other governmental body shall have issued an order (other
 than a temporary restraining order), decree or ruling or taken any other
 action restraining, enjoining or otherwise prohibiting the purchase of
 ASARCO Common Stock pursuant to the ASARCO Offer or the ASARCO Merger, and
 such order, decree, ruling or other action shall have become final and
 nonappealable; provided that the party seeking to terminate this Agreement
 shall have used its reasonable best efforts, subject to Section 5.6, to
 remove or lift such order, decree or ruling; or any statute, rule,
 regulation, order, injunction or decree shall have been enacted, entered,
 promulgated or enforced by any court, administrative agency or commission
 or other governmental authority or instrumentality which prohibits or makes
 illegal the consummation of the ASARCO Offer or the ASARCO Merger and
 which, in the case of any such order, injunction or decree, shall have
 become final and nonappealable; or there shall have been a failure to
 obtain any required consent or approval under foreign laws or regulations
 which would prohibit or make the consummation of the ASARCO Offer or the
 ASARCO Merger illegal or would have a Material Adverse Effect on Parent or
 on ASARCO.

        Section 7.2  Termination by Parent.  This Agreement may be
 terminated and the ASARCO Offer and the ASARCO Merger may be abandoned by
 action of the Board of Directors of Parent, at any time prior to the
 purchase of ASARCO Common Stock pursuant to the ASARCO Offer, if (a) the
 ASARCO Board shall withdraw, modify or change its recommendation or
 approval in respect of this Agreement or the ASARCO Offer in a manner
 adverse to Parent, (b) the ASARCO Board shall have recommended any proposal
 other than by Parent in respect of an ASARCO Takeover Proposal, (c) an
 ASARCO Takeover Proposal other than by Parent shall be publicly disclosed
 and at the scheduled expiration of the ASARCO Offer the Minimum Tender
 Condition shall not have been satisfied; provided, that all other
 conditions to the ASARCO Offer are satisfied, or (d) the condition to the
 ASARCO Offer described in clause (e) of Annex A hereto shall not have been
 satisfied within 30 days of notice that such condition has not been
 satisfied.

        Section 7.3  Termination by ASARCO.  This Agreement may be
 terminated and the ASARCO Merger may be abandoned by action of the ASARCO
 Board, at any time prior to the acceptance for payment of shares under the
 ASARCO Offer, (a) if there shall be a material breach of any of Parent's
 representations, warranties or covenants hereunder, which breach shall not
 be cured within ten days of notice thereof, or (b) provided ASARCO is not
 in breach of any obligation under this Agreement, to allow ASARCO to enter
 into an agreement in respect of an ASARCO Takeover Proposal (provided that
 such termination pursuant to this clause (b) shall not be effective unless
 and until ASARCO shall have paid to Parent the fee described in Section 7.5
 hereof and shall have complied with Section 5.9(c) and the notice
 provisions of Section 5.9(b)).

        Section 7.4  Effect of Termination.  In the event of termination of
 this Agreement pursuant to Section 7.1, all rights and obligations under
 this Agreement shall terminate (except for the provisions of Sections
 5.2(b) and 8.2), and there shall be no other liability on the part of
 Parent or ASARCO to the other except liability arising out of a willful and
 material breach of this Agreement.

        Section 7.5  Termination Fee.  In the event that (i) after the date
 hereof and prior to the ASARCO Shareholder Meeting an ASARCO Takeover
 Proposal shall have been made known to ASARCO or any of its Subsidiaries or
 shall have been made directly to its shareholders generally or any person
 shall have publicly announced an intention (whether or not conditional) to
 make an ASARCO Takeover Proposal and thereafter this Agreement is
 terminated by either Parent or ASARCO pursuant to Section 7.1(b) or (ii)
 this Agreement is terminated by ASARCO pursuant to Section 7.3(b), then
 ASARCO shall promptly pay Parent a fee equal to $30 million (the "ASARCO
 Termination Fee"), payable by wire transfer of same day funds; provided,
 however, that no ASARCO Termination Fee shall be payable to Parent pursuant
 to this paragraph unless and until within 18 months of such termination
 ASARCO or any of its Subsidiaries enters into any ASARCO Acquisition
 Agreement or consummates any ASARCO Takeover Proposal (for the purposes of
 the foregoing proviso the terms "ASARCO Acquisition Agreement" and "ASARCO
 Takeover Proposal" shall have the meanings assigned to such terms in
 Section 5.9 (except that the reference to the "acquisition or purchase of a
 business or shares of any class of equity securities of ASARCO or any of
 its Subsidiaries" in the definition of "ASARCO Takeover Proposal" in
 Section 5.9 shall be deemed to be a reference to the "acquisition or
 purchase of a business that constitutes 20% or more of the net revenues,
 net income or the assets of ASARCO and its Subsidiaries, taken as a whole,
 or 20% of any class of equity securities of ASARCO or any of its
 Subsidiaries," in which event the Termination Fee shall be payable upon the
 first to occur of such events.  ASARCO acknowledges that the agreements
 contained in this Section 7.5(a) are an integral part of the transactions
 contemplated by this Agreement, and that, without these agreements, Parent
 would not enter into this Agreement; accordingly, if ASARCO fails promptly
 to pay the ASARCO Termination Fee, and, in order to obtain such payment,
 Parent commences a suit which results in a judgement against ASARCO for the
 ASARCO Termination Fee, ASARCO shall pay to Parent its costs and expenses
 (including attorneys' fees and expenses) in connection with such suit,
 together with interest on the amount of the ASARCO Termination Fee and the
 prime rate of Citibank N.A. in effect on the date such payment was required
 to be made.

        Section 7.6  Amendment or Supplement.  At any time before or after
 approval of the matters presented in connection with the Combination by the
 respective shareholders of Parent and ASARCO and prior to the Effective
 Time, this Agreement may be amended or supplemented in writing by Parent
 and ASARCO with respect to any of the terms contained in this Agreement;
 provided, however, that following approval by the shareholders of ASARCO
 there shall be no amendment or change to the provisions hereof with respect
 to the ASARCO Merger Consideration as provided herein nor any amendment or
 change not permitted under applicable Law, without further approval by the
 shareholders of ASARCO.

        Section 7.7  Extension of Time, Waiver, Etc.  At any time prior to
 the Effective Time, any party may:

        (a)  extend the time for the performance of any of the obligations
 or acts of the other party;

        (b)  waive any inaccuracies in the representations and warranties
 of the other party contained herein or in any document delivered pursuant
 hereto; or

        (c)  subject to the proviso of Section 7.3 waive compliance with
 any of the agreements or conditions of the other party contained herein.

 Notwithstanding the foregoing no failure or delay by any party in
 exercising any right hereunder shall operate as a waiver thereof nor shall
 any single or partial exercise thereof preclude any other or further
 exercise thereof or the exercise of any other right hereunder.  Any
 agreement on the part of a party hereto to any such extension or waiver
 shall be valid only if set forth in an instrument in writing signed on
 behalf of such party.


                                ARTICLE VIII
                                MISCELLANEOUS

        Section 8.1  No Survival of Representations and Warranties.  None
 of the representations and warranties in this Agreement or in any
 instrument delivered pursuant to this Agreement shall survive the ASARCO
 Merger.

        Section 8.2  Expenses.  Whether or not the ASARCO Merger is
 consummated, all costs and expenses incurred in connection with the ASARCO
 Merger, this Agreement and the transactions contemplated hereby shall be
 paid by the party incurring such expenses, except that (a)(i) the filing
 fee in connection with any HSR Act filing or any other Required Statutory
 Approval, (ii) the commissions and other out-of-pocket transaction costs,
 including the expenses and compensation of the Exchange Agent, incurred in
 connection with the sale of Excess Shares, (iii) the expenses incurred in
 connection with the printing and mailing of the Joint Proxy Statement
 (including SEC filing fees), and (iv) all transfer Taxes, shall be shared
 equally by Parent and ASARCO.

        Section 8.3  Counterparts; Effectiveness.  This Agreement may be
 executed in two or more consecutive counterparts, each of which shall be an
 original, with the same effect as if the signatures thereto and hereto were
 upon the same instrument, and shall become effective when one or more
 counterparts have been signed by each of the parties and delivered (by
 telecopy or otherwise) to the other parties.

        Section 8.4  Governing Law.    This Agreement shall be governed by
 and construed in accordance with the laws of the State of New York without
 regard to the principles of conflicts of laws thereof, except to the extent
 the provisions of this Agreement are expressly governed by or derive their
 authority from the NJBCA.

        Section 8.5  Notices.  All notices and other communications
 hereunder shall be in writing (including telecopy or similar writing) and
 shall be effective (a) if given by telecopy, when such telecopy is
 transmitted to the telecopy number specified in this Section 8.5 and the
 appropriate telecopy confirmation is received or (b) if given by any other
 means, when delivered at the address specified in this Section 8.5:

        To Parent or SubA:

             Phelps Dodge Corporation
             2600 North Central Avenue
             Phoenix, Arizona 85004-3014

        copies to:

             Shearman & Sterling
             599 Lexington Avenue
             New York, New York  10022
             Attention:  David W. Heleniak
             Telecopy:  (212) 848-7179

        and
             Debevoise & Plimpton
             875 Third Avenue
             New York, New York  10022
             Attention:  Michael W. Blair
             Telecopy:  (212) 909-6836

        To ASARCO:

             ASARCO Incorporated
             180 Maiden Lane
             New York, New York 10038
             Attention:  Augustus B. Kinsolving, Esq.
             Telecopy: (212) 510-1910

        copy to:

             Skadden, Arps, Slate, Meagher & Flom LLP
             919 Third Avenue
             New York, New York 10022
             Attention:  J. Michael Schell
                            Margaret L. Wolff
             Telecopy:  (212) 735-2000

        Section 8.6  Assignment; Binding Effect.  Neither this Agreement
 nor any of the rights, interests or obligations hereunder shall be assigned
 by any of the parties hereto (whether by operation of Law or otherwise)
 without the prior written consent of the other parties.  Subject to the
 preceding sentence, this Agreement shall be binding upon and shall inure to
 the benefit of the parties hereto and their respective successors and
 assigns.

        Section 8.7  Severability.  Any term or provision of this Agreement
 which is invalid or unenforceable in any jurisdiction shall, as to that
 jurisdiction, be ineffective to the extent of such invalidity or
 unenforceability without rendering invalid or unenforceable the remaining
 terms and provisions of this Agreement in any other jurisdiction.  If any
 provision of this Agreement is so broad as to be unenforceable, such
 provision shall be interpreted to be only so broad as is enforceable.

        Section 8.8  Enforcement of Agreement.  The parties hereto agree
 that money damages or other remedy at law would not be sufficient or
 adequate remedy for any breach or violation of, or a default under, this
 Agreement by them and that in addition to all other remedies available to
 them, each of them shall be entitled to the fullest extent permitted by Law
 to an injunction restraining such breach, violation or default or
 threatened breach, violation or default and to any other equitable relief,
 including, without limitation, specific performance, without bond or other
 security being required.

        Section 8.9  Entire Agreement; Third-Party Beneficiaries.  This
 Agreement and the Confidentiality Agreement constitute the entire
 agreement, and supersede all other prior agreements and understandings,
 both written and oral, between the parties, or any of them, with respect to
 the subject matter hereof and thereof and, except for the provisions of
 Section 5.11 hereof, is not intended to and shall not confer upon any
 person other than the parties hereto any rights or remedies hereunder.

        Section 8.10  Headings.  Headings of the Articles and Sections of
 this Agreement are for convenience of the parties only, and shall be given
 no substantive or interpretive effect whatsoever.

        Section 8.11  Definitions.  References in this Agreement to
 "Subsidiaries" of any person shall mean any corporation or other form of
 legal entity of which more than 50% of the outstanding voting securities
 are on the date hereof directly or indirectly owned by such person.
 References in this Agreement to "Significant Subsidiaries" shall mean
 Subsidiaries which constitute "significant subsidiaries" under Rule 405
 promulgated by the SEC under the Securities Act.  References in this
 Agreement (except as specifically otherwise defined) to "affiliates" shall
 mean, as to any person, any other person which, directly or indirectly,
 controls, or is controlled by, or is under common control with, such
 person.  As used in this definition, "control" (including, with its
 correlative meanings, "controlled by" and "under common control with")
 shall mean the possession, directly or indirectly, of the power to direct
 or cause the direction of management or policies of a person, whether
 through the ownership of securities or partnership of other ownership
 interests, by contract or otherwise.  References in the Agreement to
 "person" shall mean an individual, a corporation, a partnership, an
 association, a trust or any other entity or organization, including,
 without limitation, a governmental body or authority.  Notwithstanding the
 foregoing, Parent shall not be deemed to be an "affiliate" or a
 "Subsidiary" of ASARCO.

        Section 8.12  Finders or Brokers.  Except for Morgan Stanley & Co.
 Incorporated with respect to Parent, a copy of whose engagement agreement
 has been or will be provided to ASARCO, and Credit Suisse First Boston
 Corporation with respect to ASARCO, a copy of whose engagement agreement
 has been or will be provided to Parent, neither Parent nor ASARCO nor any
 of their respective Subsidiaries  has employed any investment banker,
 broker, finder or intermediary in connection with the transactions
 contemplated hereby who might be entitled to any fee or any commission in
 connection with or upon consummation of the ASARCO Merger.

        IN WITNESS WHEREOF, the parties hereto have caused this Agreement
 to be duly executed and delivered as of the date first above written.


                                   PHELPS DODGE CORPORATION

                                   By:  /s/ D. C. Yearley
                                      ------------------------------------
                                      Name:  Douglas C. Yearley
                                      Title: Chairman & CEO


                                    AAV ACQUISITION CORP.


                                    By:  /s/ D. C. Yearley
                                      ------------------------------------
                                      Name:  Douglas C. Yearley
                                      Title: Chairman


                                    ASARCO INCORPORATED


                                    By:  /s/ Francis R. McAllister
                                      -----------------------------------
                                      Name:  Francis R. McAllister
                                      Title: Chairman and Chief Executive
                                               Officer




                                                                    ANNEX A


                       Conditions to the ASARCO Offer

           Notwithstanding any other provision of the ASARCO Offer, Parent
 and the Purchaser shall not be required to accept for exchange or exchange
 any ASARCO Common Stock, may postpone the acceptance for exchange of or
 exchange for tendered ASARCO Common Stock, and, subject to the terms of the
 Merger Agreement, may, terminate or amend the Offer as to any ASARCO Common
 Stock not then exchanged (a) if at the Expiration Date, any of the Minimum
 Condition or the Phelps Dodge Stockholder Approval Condition (as defined in
 the Prospectus dated September 22, 1999 relating to the Offer by Phelps
 Dodge for shares of ASARCO Common Stock) has not been satisfied or (b) if
 on or after October 5, 1999 and at or prior to the Expiration Date, any of
 our other conditions are not satisfied.  The conditions are as follows:

           (a)  The shares of our common stock which shall be issued to
 ASARCO stockholders in the ASARCO Offer and the ASARCO Merger have been
 authorized for listing on the NYSE, subject to official notice of issuance;

           (b)  Registration Statement No. 333-86063 and any post-effective
 amendments thereto shall be effective under the Securities Act, and no stop
 order suspending the effectiveness of the Registration Statement shall have
 been issued nor shall there have been proceedings for that purpose
 initiated or threatened by the SEC and we shall have received all necessary
 state securities law or "blue sky" authorizations;

           (c)  No temporary restraining order, preliminary or permanent
 injunction or other order or decree issued by any court or agency of
 competent jurisdiction or other legal restraint or prohibition preventing
 the consummation of the Offer or any of the other transactions contemplated
 by the Prospectus dated September 22, 1999 (the "Prospectus") shall be in
 effect; no statute, rule, regulation, order, injunction or decree shall
 have been enacted, entered, promulgated or enforced by any court,
 administrative agency or commission or other governmental authority or
 instrumentality which prohibits, or makes illegal the consummation of our
 Offer; nor shall there have been a failure to obtain any required consent
 or approval under foreign laws or regulations which prohibit or would make
 the consummation of the ASARCO Offer illegal or would have a Material
 Adverse Effect on Parent or on ASARCO;

           (d)  There shall not have been after the date of this Agreement
 any (i) amendment of the Code, (ii) amendment or adoption of final or
 temporary Treasury Regulations under the Code, (iii) Internal Revenue
 Service revenue ruling, revenue procedures, technical advice memorandum or
 notices, or (iv) final decision of a court of competent jurisdiction, in
 each case that would be inconsistent with the ASARCO Merger qualifying as a
 reorganization under Section 368(a) of the Code; and

           (e)  The representations and warranties of ASARCO in this
 Agreement shall be true and correct (without giving effect to any
 qualification as to "materiality" or "Material Adverse Effect" set forth
 therein) as of the date of the Agreement and as of the expiration date as
 though made on and as of the date of the Agreement  and the Expiration Date
 except where the failure of such representations and warranties to be so
 true and correct would not reasonably be expected to have, individually or
 in the aggregate a Material Adverse Effect on ASARCO; and ASARCO shall have
 performed or complied in all material respects with all the material
 agreements and covenants required by this Agreement.

           The foregoing conditions are solely for benefit of Parent and the
 Purchaser and Parent and the Purchaser may assert them regardless of the
 circumstances giving rise to any such conditions (including any action or
 inaction by Parent and the Purchaser).  The determination as to whether any
 condition has been satisfied shall be deemed a continuing right which may
 be asserted at any time and from time to time.  Notwithstanding the fact
 that Parent and the Purchaser reserve the right to assert the failure of a
 condition following acceptance for exchange but prior to exchange in order
 to delay exchange or cancel its obligation to exchange properly tendered
 ASARCO Common Stock, Parent and the Purchaser will either promptly exchange
 such ASARCO Common Stock or promptly return such ASARCO Common Stock.






 FOR IMMEDIATE RELEASE


                     ASARCO BOARD APPROVES MERGER AGREEMENT
                               WITH PHELPS DODGE

 NEW YORK, N.Y., OCTOBER 6, 1999  --  The Board of Directors of ASARCO
 Incorporated (NYSE:AR) announced today that it has accepted an improved
 offer from Phelps Dodge Corporation (NYSE:PD) which values the Company at
 $1.1 billion or $28.21 per share.  Pursuant to the merger agreement signed
 by the parties, Phelps Dodge will acquire Asarco for $14.75 in cash and
 0.2513 Phelps Dodge share for each Asarco common share on a fully prorated
 basis.

      Francis R. McAllister, chairman and chief executive officer of Asarco,
 said, "From the beginning it has been our aim to maximize shareholder
 value.  We believe this transaction represents good value for Asarco
 shareholders.  We plan to work closely with Phelps Dodge to ensure a smooth
 transition."

      Under the agreement, Asarco shareholders can elect to receive cash or
 Phelps Dodge shares for each Asarco share, subject to proration to maintain
 the overall cash/stock allocation of approximately 50% stock and 50% cash.
 The stock portion of the consideration received will be tax-free to Asarco
 shareholders.

      Based on Phelps Dodge closing share price yesterday, the agreement
 currently values Asarco at $28.21 per share, or a total equity value of
 approximately $1.1 billion, based on approximately 40 million Asarco shares
 outstanding.  Based on share prices at the time of Phelps Dodge's original
 offer on August 20, 1999, the agreement values Asarco at $29.50 per share
 or approximately a 60% premium.

      Completion of the exchange offer is subject to 80% of Asarco shares
 being tendered and not withdrawn, approval of Phelps Dodge shareholders at
 a special meeting on October 13th and customary closing conditions.  The
 closing should be completed on October 22nd

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