ASARCO INC
SC 14D9, 1999-09-09
PRIMARY SMELTING & REFINING OF NONFERROUS METALS
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


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                                 SCHEDULE 14D-9

                     SOLICITATION/RECOMMENDATION STATEMENT
                      PURSUANT TO SECTION 14(D)(4) OF THE
                        SECURITIES EXCHANGE ACT OF 1934


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                              ASARCO Incorporated
                           (Name of Subject Company)


                              ASARCO Incorporated
                      (Name of Person(s) Filing Statement)


                      Common Stock, No Par Value Per Share
                         (Title of Class of Securities)


                                   043413103
                     (CUSIP Number of Class of Securities)


                             Francis R. McAllister
                      Chairman and Chief Executive Officer
                              ASARCO Incorporated
                                180 Maiden Lane
                            New York, New York 10038
                                 (212) 510-2000
                 (Name, address and telephone number of person
               authorized to receive notice and communications on
                   behalf of the person(s) filing statement).


                                With Copies to:
                               J. Michael Schell
                               Margaret L. Wolff
                    Skadden, Arps, Slate, Meagher & Flom LLP
                                919 Third Avenue
                            New York, New York 10022
                                 (212) 735-3000

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Item 1. Security and Subject Company.

  The name of the subject company is ASARCO Incorporated, a New Jersey
corporation ("ASARCO"). The address of the principal executive offices of
ASARCO is 180 Maiden Lane, New York, New York 10038. The title of the class of
equity securities to which this Statement relates is the common stock, no par
value per share, of ASARCO (the "ASARCO Common Stock"), including the
associated preferred share purchase rights (the "Rights") issued pursuant to
the Rights Agreement, dated as of January 28, 1998, between ASARCO and The
Bank of New York, as amended (the "ASARCO Rights Plan"). Except where the
context otherwise requires, all references herein to the ASARCO Common Stock
shall include the Rights.

Item 2. Tender Offer of the Bidder.

  This Statement relates to the exchange offer for all of the outstanding
shares of ASARCO Common Stock which is described in a Tender Offer Statement
on Schedule 14D-1 (the "Schedule 14D-1") of Phelps Dodge Corporation, a New
York corporation ("Phelps Dodge"), and AAV Corporation, a Delaware corporation
and a wholly owned subsidiary of Phelps Dodge, filed with the Securities and
Exchange Commission (the "Commission") on September 3, 1999, which
incorporates the prospectus (the "Phelps Dodge Prospectus") of Phelps Dodge
contained in the Registration Statement on Form S-4 of Phelps Dodge filed with
the Commission on August 27, 1999, as amended by Amendment No. 1 thereto filed
with the Commission on September 1, 1999 and Amendment No. 2 thereto filed
with the Commission on September 2, 1999 (the "Phelps Dodge Form S-4").
According to the Schedule 14D-1, Phelps Dodge is offering, upon the terms and
subject to the conditions set forth in the Phelps Dodge Prospectus and in a
related Letter of Transmittal (together, the "Phelps Dodge Offer"), to
exchange .4098 of a share of common stock of Phelps Dodge (the "Phelps Dodge
Common Stock") for each outstanding share of ASARCO Common Stock validly
tendered and not properly withdrawn on or prior to the expiration date of the
Phelps Dodge Offer.

  According to the Schedule 14D-1, Phelps Dodge intends, as soon as
practicable after consummation of the Phelps Dodge Offer, to seek to merge
ASARCO with a subsidiary of Phelps Dodge.

  According to the Schedule 14D-1, the principal executive offices of Phelps
Dodge are located at 2600 North Central Avenue, Phoenix, Arizona 85004.

Item 3. Identity and Background.

  (a) The name and business address of ASARCO, which is the person filing this
Statement, are set forth in Item 1 above.

  (b) Except as described (i) in this Statement, (ii) on pages 10 through 20
of ASARCO's Proxy Statement, dated March 15, 1999 (the "1999 ASARCO Proxy
Statement"), sent by ASARCO to its stockholders in connection with its Annual
Meeting of Stockholders held on April 28, 1999, which are filed as Exhibit 1
to this Statement and incorporated herein by reference, (iii) under the
headings "Interests of Certain Persons in the Merger--ASARCO Employment
Agreements," "--ASARCO Stock Based Plans," "--Other ASARCO Plans," "--
Indemnification and Insurance," "The Merger Agreement--Stock Options and Other
Stock-Based Awards," "--Benefit Matters," "--Indemnification; Directors' and
Officers' Insurance" and "Directors and Management Following the Business
Combination" on pages 62 through 64, 66, 72 through 73 and 79, respectively,
of the joint proxy statement and prospectus of ASARCO, Cyprus Amax Minerals
Company ("Cyprus Amax") and Asarco Cyprus Incorporated ("Asarco Cyprus"),
dated August 20, 1999 (the "Joint Proxy Statement and Prospectus"), sent by
ASARCO to its stockholders in connection with the special meeting of its
stockholders to be held on September 30, 1999, which are filed as Exhibit 2 to
this Statement and incorporated herein by reference, and (iv) under the
heading "Interests of Certain Persons in the Merger" on page 13 of the Current
Report on Form 8-K of Asarco Cyprus, dated August 20, 1999, sent by ASARCO to
its stockholders in connection with the special meeting of its stockholders to
be held on September 30, 1999, which is filed as Exhibit 3 to this statement
and incorporated herein by reference, there are no material contracts,
agreements, arrangements or understandings, or any actual or potential
conflicts of interest between

                                       1
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ASARCO or its affiliates and (1) its executive officers, directors or
affiliates or (2) Phelps Dodge, its executive officers, directors or
affiliates.

  The consummation of the Phelps Dodge Offer on the terms described in the
Phelps Dodge Prospectus would constitute a change in control for purposes of
the contracts, agreements and arrangements described in the 1999 ASARCO Proxy
Statement and the Joint Proxy Statement and Prospectus which description is
incorporated herein by reference.

  Phelps Dodge Overseas Capital Corporation, a wholly owned subsidiary of
Phelps Dodge, and ASARCO are among the parties to an agreement among
stockholders, dated as of January 2, 1996, regarding their respective stock
holdings in Southern Peru Copper Corporation ("SPCC"). The agreement gives
each party the right to nominate a number of SPCC directors in proportion with
the party's stock ownership, and requires each party to vote its stock to
elect those directors.

  From 1995 through 1998, Phelps Dodge Sales Company Incorporated, a wholly
owned subsidiary of Phelps Dodge, was party to a contract with SPCC to
purchase 4,800 metric tons of copper from 1995-1997 and 2,400 metric tons of
copper in 1998 for $14,095,465 in 1995, $10,993,828 in 1996, $10,925,043 in
1997 and $3,966,730 in 1998.

Item 4. The Solicitation or Recommendation.

  (a) Recommendation of the ASARCO Board of Directors

  As more fully described below, the ASARCO Board of Directors has unanimously
rejected the Phelps Dodge Offer as inadequate and not in the best interests of
ASARCO and its stockholders. The ASARCO Board of Directors unanimously
recommends that all holders of ASARCO Common Stock reject the Phelps Dodge
Offer and not tender their shares to Phelps Dodge. The ASARCO Board of
Directors has unanimously reaffirmed its determination that the terms of the
Business Combination with Cyprus Amax are fair to, and in the best interests
of, ASARCO and its stockholders.

  (b) Background; Reasons for the ASARCO Board's Recommendation

  On July 15, 1999, Asarco Cyprus, ACO Acquisition Corp., a New Jersey
corporation and a wholly owned subsidiary of Asarco Cyprus ("ACO"), CAM
Acquisition Corp., a Delaware corporation and a wholly owned subsidiary of
Asarco Cyprus ("CAM"), ASARCO and Cyprus Amax entered into an Agreement and
Plan of Merger (the "Merger Agreement"), pursuant to which, subject to the
satisfaction or waiver of certain conditions, ACO will be merged with and into
ASARCO (the "ASARCO Merger") and CAM will be merged with and into Cyprus Amax
(the "Cyprus Merger" and, together with the ASARCO Merger, the "Mergers" or
the "Business Combination"). At the effective time of the Business
Combination, (i) each outstanding share of ASARCO Common Stock will be
converted into the right to receive one share (the "ASARCO Exchange Ratio") of
common stock, par value $.01 per share, of Asarco Cyprus (the "Asarco Cyprus
Common Stock"), with cash being paid in lieu of fractional shares, (ii) each
outstanding share of Cyprus Amax Common Stock will be converted into the right
to receive 0.765 shares (the "Cyprus Exchange Ratio") of Asarco Cyprus Common
Stock, with cash being paid in lieu of fractional shares and (iii) each
outstanding share of Cyprus Amax preferred stock will be converted into a
share of Asarco Cyprus preferred stock with substantially identical terms,
preferences, limitations, privileges and rights.

  On August 10, 1999, Francis R. McAllister, Chairman of the Board and Chief
Executive Officer of ASARCO, and Milton H. Ward, the Chairman, President and
Chief Executive Officer of Cyprus Amax, each received a telephone call from
Douglas C. Yearley, Chairman and Chief Executive Officer of Phelps Dodge. In
each call Mr. Yearley said Phelps Dodge wished to propose a three-way
combination of ASARCO, Cyprus Amax and Phelps Dodge and requested a prompt
meeting to discuss the proposal. Later that day, Messrs. McAllister and Ward
replied to the proposal with a letter saying that the Merger Agreement
prohibited both ASARCO and Cyprus Amax from discussing a business combination
with any third parties and declining Mr. Yearley's request for a meeting.

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  On August 11, 1999, Messrs. McAllister and Ward received the following letter
from Phelps Dodge:

                                     "August 11, 1999

  "Mr. Francis R. McAllister
  Chairman and Chief Executive Officer
  ASARCO Incorporated
  180 Maiden Lane
  New York, NY 10038

  "Mr. Milton H. Ward
  Chairman, Chief Executive Officer and President
  Cyprus Amax Minerals Company
  9100 East Mineral Circle
  Englewood, CO 80112

  "Dear Frank and Milt:

    "We are disappointed that you have declined to meet with us. As you
  know from our telephone conversations, we have considered your pending
  business combination and would like to discuss with you our proposal,
  described in more detail below, to combine all three of our companies
  in a negotiated transaction.

    "We believe that a three-way combination of Phelps Dodge, Asarco and
  Cyprus Amax would create superior shareholder value for the
  shareholders of Asarco and Cyprus Amax. A three-way combination, by
  creating a lower-cost global competitor, would also benefit the
  employees and customers of all three companies. For these reasons, we
  are approaching you to discuss the concept of a three-way combination.

    "We propose that all of the outstanding common stock of both Asarco
  and Cyprus Amax be exchanged for Phelps Dodge common stock. The
  transaction would be tax-free to your shareholders.

    "A combination of these businesses would result in cost savings well
  in excess of the amounts you have indicated to be achievable through
  your pending merger. Preliminarily we estimate that the annual cash
  cost savings reach at least $150 million.

    "We propose to reward your shareholders for these substantial
  incremental benefits by offering your shareholders an exchange ratio of
  0.3756 Phelps Dodge common shares for each Asarco common share and
  0.2874 Phelps Dodge common shares for each Cyprus Amax common share.
  These exchange ratios preserve the relative economics of your proposed
  combination and imply premiums of approximately 25% based on current
  market prices for Asarco and Cyprus Amax.

    "We believe this proposal creates superior value for your
  shareholders based on:

    .  the sizeable premium we are offering which, in effect, represents
       up-front payment to your shareholders for the substantial cost
       savings we expect to achieve;

    .  their opportunity to participate in the ongoing value creation of
       the combined company; and

    .  our planned continuation of the current $2.00 per share Phelps
       Dodge common stock dividend resulting in substantial dividend
       increases for both Asarco and Cyprus Amax shareholders to 3.76
       times the level contemplated in your pending merger.

    "Our preference is for a combination of all three companies, which
  would of course involve the consent of both Asarco and Cyprus Amax to a
  modification of your existing agreement.

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    "Since your merger agreement has not been publicly filed, we have not
  had the opportunity to review its terms. Based on your August 10, 1999
  letter, it is unclear to us whether discussions may proceed once you
  receive a written proposal such as this letter. In any event, if
  necessary under your merger agreement, we request that you grant one
  another waivers to allow meetings with us on our proposal which, as
  discussed below, would be far more favorable to your shareholders than
  your proposed merger.

    "We are confident that the market reaction to a three-way combination
  would be positive. In particular we believe the market would recognize:

    .  the significantly stronger ability of the combined company,
       relative to the Asarco/Cyprus Amax combination, to integrate
       southwest U.S. mining operations, administrative functions in
       Chile and Peru and world-wide exploration and development
       activities;

    .  the financial strength of the combined company and ability to
       create a world class portfolio of cost competitive mining assets;

    .  a strong and deep management team, at both the operating and
       corporate levels, with strong credibility in the marketplace;

    .  the ability to eliminate substantial overhead, exploration,
       purchasing and other expenses through the consolidation;

    .  the tremendous operating leverage of the combined company,
       together with enough diversity in other businesses to mitigate
       cyclical downturns;

    .  the ability of the combined company to reduce capital
       expenditures;

    .  a strong, liquid balance sheet, with excellent access to capital;
       and

    .  how all of these factors would build greater shareholder value,
       on an ongoing basis, for the shareholders of all three companies.

    "This is intended to be a confidential proposal which is subject to
  the execution of a definitive merger agreement and receipt of customary
  approvals, including approval by our respective Boards of Directors and
  shareholders. We have conducted in-depth analyses of the proposed
  three-way combination from a regulatory perspective and have concluded
  that it will be possible to obtain the necessary approvals on a timely
  basis.

    "We believe that our proposal is substantially more attractive to
  your shareholders than your pending merger. In addition to the sizeable
  premium we are offering, your shareholders would participate, through
  their ongoing Phelps Dodge common stock ownership, in a larger
  enterprise with greater realizable cost savings and synergies, a
  stronger portfolio of cost competitive assets and a deep management
  team with a strong operating record. We have no doubt that your
  shareholders will enthusiastically embrace our proposal once they learn
  of it.

    "We have discussed this proposal with our Board, which fully supports
  it. We are confident of our ability, with your cooperation, to complete
  this transaction as quickly as your proposed two-party Asarco/Cyprus
  Amax merger.

    "We are firmly committed to moving forward quickly to consummate this
  transaction. As we mentioned, we would be happy to meet with you in New
  York or another mutually convenient location to amplify our proposal.
  In any event, we would appreciate a response by 5:00 p.m., New York
  time, on Wednesday, August 18, 1999.

  Sincerely,

  /s/                                   /s/
  Douglas C. Yearley                    J. Steven Whisler
  Chairman and Chief Executive Officer  President and Chief Operating Officer"

                                       4
<PAGE>

  On August 12, 1999, Messrs. McAllister and Ward telephoned Mr. Yearley in
response to his August 11 letter and reiterated that both ASARCO and Cyprus
Amax were prohibited from discussing a business combination with any third
parties pursuant to the terms of the Merger Agreement.

  On August 12, 1999, Messrs. Yearley and J. Steven Whisler, President and
Chief Operating Officer of Phelps Dodge, sent substantially identical letters
to the ASARCO Board of Directors and the Cyprus Amax Board of Directors
describing the proposal outlined in the previous letter to the chief executive
officers, respectively, and asking once again that the Boards of ASARCO and
Cyprus Amax carefully consider the merger proposal and that they authorize the
commencement of negotiations.

  On August 19, 1999, the ASARCO Board of Directors and the Cyprus Amax Board
of Directors, together with their respective legal and financial advisors, met
separately to consider the unsolicited proposal from Phelps Dodge. Both the
ASARCO Board of Directors and the Cyprus Amax Board of Directors unanimously
determined that pursuing the Business Combination was in best interests of
ASARCO and Cyprus Amax stockholders, respectively, and reconfirmed their
respective recommendations of the Business Combination.

  In the morning of August 20, 1999, Messrs. Ward and McAllister telephoned
Mr. Yearley to tell him that their Boards of Directors had declined to pursue
the three-way combination proposal by Phelps Dodge. After Messrs. Ward and
McAllister were unsuccessful in reaching Mr. Yearley, they sent the following
letter:

                                     "August 20, 1999

  "Mr. Douglas C. Yearley
  Chairman, President and
   Chief Executive Officer
  Phelps Dodge Corporation
  2600 North Central Avenue
  Phoenix, AZ 85004-3050

  Dear Doug:

    "We have tried to reach you this morning to convey the response of
  our respective Boards and to share with you the attached press release.

    "Each of our companies has convened its Board and received thorough
  presentations from financial and legal advisors. After full
  consideration of your proposal, each Board unanimously decided that it
  was in the best interests of its shareholders to pursue the Asarco
  Cyprus merger. That is what we intend to do.

                                     Sincerely,

  /s/                                /s/
  Francis R. McAllister              Milton H. Ward
  Chairman and Chief                 Chairman, Chief Executive
  Executive Officer                  Officer and President
  Asarco Incorporated                Cyprus Amax Minerals Company"

    Subsequently, Cyprus Amax and ASARCO issued the following joint press
  release:

    "DENVER and NEW YORK--August 20, 1999--Cyprus Amax Minerals
  (NYSE:CYM) and ASARCO Incorporated (NYSE:AR) announced that they have
  set shareholder meetings for September 30, 1999 to approve their
  previously announced merger of equals. Asarco Cyprus Incorporated will
  be the largest publicly traded copper company with an estimated cash
  cost of under 50 cents. Definitive proxy materials will be mailed to
  shareholders of record on August 25, 1999.

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<PAGE>

    "Cyprus and Asarco also announced that joint Asarco and Cyprus merger
  teams are reviewing all operating and administrative aspects of the new
  organization to identify organizational and other profit driven changes
  in the way they do business. The companies have engaged outside
  consultants to assist in identification of cost savings to facilitate
  the process. As a result of these reviews, the estimate of annual
  expense reductions is now approaching $200 million including $50
  million in reduced administrative and overhead costs, $50 million from
  lower costs of purchased materials and services, $25 million in other
  costs and $75 million in lower depreciation. As part of the cost
  reductions, Cyprus' Denver office will be closed and Asarco's New York
  office will be downsized and relocated to New Jersey. In addition, the
  companies believe the merger will provide the flexibility to
  rationalize higher cost production during periods of low copper prices,
  which could be expected to result in operational cash improvements
  approaching $75 million annually.

    "Cyprus and Asarco also jointly reported that the Boards of both
  companies had received an unsolicited proposal from Phelps Dodge
  Corporation to negotiate an agreement for Phelps Dodge to acquire both
  companies for stock. Phelps Dodge proposed an exchange of .3756 of a
  Phelps Dodge share for each Asarco share and .2874 of a Phelps Dodge
  share for each Cyprus share. Phelps Dodge's proposal is subject to a
  number of contingencies.

    "On August 19, 1999, the Asarco Board of Directors and the Cyprus
  Amax Board of Directors, together with their respective legal and
  financial advisors, met separately to consider the unsolicited proposal
  from Phelps Dodge. Both the Asarco Board of Directors and the Cyprus
  Amax Board of Directors determined that pursuing the Asarco Cyprus
  merger was in best interests of Asarco and Cyprus Amax stockholders,
  respectively, and reconfirmed their respective recommendations of the
  merger.

    "Since the merger announcement, both Boards noted that the share
  prices of Cyprus and Asarco have outperformed the other U.S. listed
  copper companies. Asarco Cyprus expects that at its estimated cash
  costs of under 50 cents per pound, it will require a copper price of
  less than 65 cents per pound to breakeven on a net earnings basis.
  Asarco Cyprus will have a strong, experienced management team and the
  financial capacity to further enhance operating efficiencies, expand or
  develop low cost copper properties and otherwise rationalize operations
  to achieve optimum operating levels."

  In the afternoon of August 20, 1999, Mr. Yearley and Mr. J. Steven Whisler,
President and Chief Operating Officer of Phelps Dodge, conducted an analysts'
conference telephone call in which they announced that Phelps Dodge planned to
offer 0.4098 of a share of Phelps Dodge Common Stock to ASARCO stockholders
and 0.3135 of a share of Phelps Dodge Common Stock to Cyprus Amax
stockholders. Late in the evening of August 20 Messrs. Yearley and Whisler
sent the following letter to the ASARCO Board of Directors and a substantially
identical letter to the Cyprus Amax Board of Directors.

                                     "August 20, 1999

  "Board of Directors of ASARCO Incorporated
  c/o Mr. Francis R. McAllister
  Chairman and Chief Executive Officer
  ASARCO Incorporated
  180 Maiden Lane
  New York, NY 10038

  "Gentlemen:

    "We are disappointed in your response to our proposed three-way
  combination of Asarco, Cyprus Amax and Phelps Dodge. As you know, we
  have on three recent occasions requested the opportunity to discuss our
  proposal, which we believe would be far superior to your shareholders
  than your proposed combination with Cyprus Amax.

                                       6
<PAGE>

    "We are particularly disappointed that instead of accepting our
  previous requests to meet to discuss our proposal to acquire Asarco for
  a substantial premium, you chose today to announce unilaterally our
  interest in acquiring Asarco and Cyprus Amax and to reject our proposal
  in favor of your no-premium merger proposal with Cyprus Amax. This
  appears consistent with the manner in which you have chosen to treat
  your own shareholders by announcing just today, at the same time you
  first disclosed the terms of your July 15 merger agreement, that the
  record date for your shareholder vote on the no-premium merger with
  Cyprus Amax would be August 25. Since trades after today will settle
  after August 25, this effectively precluded any significant trading in
  the market on an informed basis before the determination of
  shareholders eligible to vote at your meeting.

    "In light of your unilateral announcement, we have no other choice
  than to publicly announce our proposal to enter into a business
  combination with Asarco and Cyprus Amax, so that share owners of all
  three companies are fully informed.

    "Terms of our Proposal

    "We propose a business combination of Phelps Dodge and Asarco
  pursuant to which all of the outstanding common stock of Asarco would
  be exchanged for Phelps Dodge common stock at an exchange ratio of
  0.4098 Phelps Dodge common shares for each Asarco common share. We are
  also independently proposing to Cyprus Amax a business combination of
  Phelps Dodge and Cyprus Amax pursuant to which all of the outstanding
  common stock of Cyprus Amax would be exchanged for Phelps Dodge common
  stock at an exchange ratio of 0.3135 Phelps Dodge common shares for
  each Cyprus Amax common share. Based on share prices for the three
  companies' common shares before trading was halted this morning, these
  ratios imply a premium of approximately 30% for Asarco and a premium of
  approximately 29% for Cyprus Amax, while preserving the relative
  economics of the exchange ratio under your proposed combination with
  Cyprus Amax.

    "Following the combination, we plan to continue the current $2.00 per
  share Phelps Dodge common dividend. This would result in a substantial
  dividend increase for Asarco shareholders to 4.1 times the dividend
  contemplated in your proposed merger with Cyprus Amax.

    "Our proposed transaction would be tax-free for your shareholders. In
  addition, through their ownership of Phelps Dodge common stock, your
  shareholders would continue to participate in the ongoing value
  creation of the combined company. Although we prefer a transaction
  involving all three companies, we are prepared to enter into a
  negotiated business combination with either Asarco or Cyprus Amax,
  regardless of whether the other company is willing to proceed on a
  negotiated basis.

    "We believe that consideration in the form of Phelps Dodge common
  stock should be particularly attractive to your shareholders. Over the
  past several years Phelps Dodge's stock price has significantly
  outperformed the stock prices of Asarco and Cyprus Amax. As a result of
  Phelps Dodge's higher dividend, the level of outperformance is even
  greater when viewed on the basis of the total return to shareholders
  assuming reinvestment of dividends. Over the past 10 years Phelps
  Dodge's total return has been 161% as compared to negative 20% and
  negative 26% for Asarco and Cyprus Amax, respectively. Similarly, over
  the past 15 years, Phelps Dodge's total return has been 1,024% as
  compared to 25% for Asarco and 102% for Cyprus Amax. We are very proud
  of this strong management and operational track record over a difficult
  copper environment.

                                       7
<PAGE>

    "The Combined Company

    "We believe that our proposal presents a unique opportunity to create
  a large, resource-rich portfolio of lower-cost global copper assets
  with enhanced flexibility to deliver superior results in all business
  cycles. Our proposal would create a much stronger company than would
  your proposed merger with Cyprus Amax through:

    .  the significantly stronger ability of the combined company,
       relative to the Asarco-Cyprus Amax combination, to integrate
       southwestern U.S. mining operations, administrative functions in
       the U.S., Chile and Peru, and worldwide exploration and
       development activities;

    .  the financial strength of the combined company and ability to
       create a world class portfolio of cost-competitive mining assets;

    .  a strong and deep management team, at both the operating and
       corporate levels, with strong credibility in the marketplace;

    .  the ability to eliminate substantial overhead, exploration,
       purchasing and other expenses through the consolidation;

    .  the tremendous operating leverage of the combined company,
       together with enough diversity in other businesses to mitigate
       cyclical downturns;

    .  the immediate and substantial accretion to the cash flow of the
       combined company resulting from the transaction;

    .  the significant accretion to earnings per share of the combined
       company beginning in the second year after closing, based on the
       current portfolio of the combined companies and analysts'
       estimates of copper prices of $0.80 to $0.85 per pound in 2001;

    .  the total current annual copper production of the combined
       company of 3.8 billion pounds and attributable copper reserves of
       80 billion pounds;

    .  the increased ability of the combined company to compete for
       world-class projects;

    .  the ability of the combined company to reduce capital
       expenditures;

    .  the strong, liquid balance sheet of the combined company, with
       excellent access to capital; and

    .  the way all of these factors would build greater shareholder
       value, on an ongoing basis, for the shareholders of all three
       companies.

    "Through the measures described above we estimate that in a three-way
  combination we could achieve approximately $200 million in annual cash
  cost savings, fully phased in by the end of the second year after
  closing of the transaction. In addition, we expect lower depreciation
  of approximately $65 million annually, bringing total estimated annual
  savings to approximately $265 million. These cost savings are based on
  public information and our expectation that we can deliver at least $75
  million in incremental savings above the new cash synergy figure of
  $125 million that you have projected in the proposed Asarco-Cyprus Amax
  combination. This does not include any cost savings from the
  rationalization of high-cost production during periods of low copper
  prices.

    "Following the combination, we would expect to operate all properties
  in accordance with Phelps Dodge's disciplined management approach. This
  means that each property would be run on a basis intended to earn in
  excess of the cost of capital over a full copper price cycle. We
  believe that Phelps Dodge's management team has the credibility to make
  the tough decisions necessary to rapidly integrate all three businesses
  and to create value for shareholders.


                                       8
<PAGE>

    "A three-way combination, by creating a more efficient global
  competitor, would also benefit the employees and customers of all three
  companies. We have conducted an in-depth analysis of the three-way
  combination from a regulatory perspective and have concluded that it
  will be possible to obtain the necessary approvals on a timely basis.

    "Our Board of Directors has authorized this proposal and we are
  resolutely committed to its consummation. We are confident that your
  shareholders will find our proposal to be a unique and compelling
  opportunity. We continue to prefer to proceed on a mutually
  satisfactory, negotiated basis but are prepared to pursue all other
  avenues should that be necessary. We are ready to meet with you or your
  management at any time.

  Sincerely,

  /s/                                /s/
  Douglas C. Yearley                 J. Steven Whisler
  Chairman and                       President and
  Chief Executive Officer            Chief Operating Officer"

  On August 23, 1999, the ASARCO Board of Directors and the Cyprus Amax Board
of Directors each met with their respective legal and financial advisors to
consider the August 20 revised unsolicited proposal from Phelps Dodge.

  At the August 23, 1999 meeting the ASARCO Board of Directors received
reports from the management and their financial and legal advisors concerning
the revised Phelps Dodge proposal, discussions with Cyprus Amax concerning the
proposal and various strategic matters relating to the proposal. The ASARCO
Board of Directors unanimously concluded that the proposal should be rejected
and that all reasonable and appropriate steps should be taken to complete
successfully the combination with Cyprus Amax. At that meeting, the Board also
discussed financial and strategic responses to the unsolicited revised
proposal from Phelps Dodge and authorized management to take all appropriate
action in coordination with Cyprus Amax to respond to the Phelps Dodge
proposal for the purpose of protecting the stockholder value generated by the
Business Combination between ASARCO and Cyprus Amax.

  Following discussion between Cyprus Amax and ASARCO, on August 25, 1999, Mr.
McAllister discussed with the ASARCO Board of Directors the response to Phelps
Dodge's proposal and the terms of a modification of their current proposed
merger of equals. It was the sense of the ASARCO Board that the merger of
equals should be pursued. In addition, on August 25, 1999 the Cyprus Amax
Board of Directors met with its legal and financial advisors and approved
several items previously discussed with ASARCO as set forth in the following
joint press release issued by ASARCO and Cyprus Amax on August 25, 1999 (the
"Revised ASARCO/Cyprus Amax Proposal"):

  "Denver, CO and New York, NY, August 25, 1999--Cyprus Amax Minerals
  Company (NYSE:CYM) and ASARCO Incorporated (NYSE:AR) today jointly
  announced that they have improved the terms of their own combination
  transaction. In addition they have written to Phelps Dodge outlining
  their willingness to negotiate with Phelps Dodge on terms included in
  the letter. According to the letter, Asarco and Cyprus Amax would be
  willing to proceed with a three-way combination with Phelps Dodge if
  its proposed exchange ratios are increased, if Phelps Dodge fully
  underwrites the risk of antitrust problems with its proposal and if the
  contract terms mirror those of the Asarco/Cyprus contract. Asarco and
  Cyprus Amax said the exchange ratios they would require were .5300 of a
  Phelps Dodge share for Asarco holders and .4055 of a Phelps Dodge share
  for Cyprus Amax holders. The letter to Phelps Dodge is attached.


                                       9
<PAGE>

  "The two companies also said they have decided to improve the financial
  terms of their own combination by including a special payment of $5.00
  per share to the stockholders of the combined Asarco Cyprus
  Incorporated. The special payment would be paid to stockholders as soon
  as possible after consummation of the merger. Asarco and Cyprus Amax
  emphasized that they were proceeding with their two-way combination
  which, subject to stockholder approval, will close on September 30,
  1999.

  "Speaking together, Milton H. Ward, Chairman and Chief Executive
  Officer of Cyprus Amax and Francis R. McAllister, Chairman and Chief
  Executive Officer of Asarco said "Our response to Phelps Dodge
  evidences our intent to secure the best value for our shareholders
  whether through a three way combination including Phelps Dodge or
  through consummation of the merger previously announced. We have
  presented very simple terms to Phelps Dodge which we believe recognize
  the contributions our two companies make to a three way combination.
  The proposal previously communicated by Phelps Dodge fails to reward
  our stockholders for the values derived from the Asarco Cyprus
  transaction. Our proposed exchange ratio gives recognition to the fact
  that our shareholders will be contributing approximately 50% of the
  value of a three way combination.'

  "We intend to move forward to complete our own merger transaction as
  soon as possible and as a sign of confidence of our ability to achieve
  cost reductions of at least $200 million annually, Asarco Cyprus will
  make a special payment to shareholders when the merger closes. This
  special $5.00 per share payment reflects the Boards' and managements'
  confidence in their ability to deliver benefits from the merger. Asarco
  Cyprus is expected to have in excess of $1 billion in cash at the time
  of closing and the Boards of both companies have agreed that Asarco
  Cyprus will pursue the sale of Cyprus Amax's investments in Kinross
  Gold and its Australian coal holdings and Asarco's specialty chemicals
  business. We would expect the sales to be completed within six months
  after closing. Proceeds are expected to approach $1 billion and cash
  taxes would be minimized due to tax benefits from the sale of the
  Kinross shares. Proceeds would be used to pay down debt and improve the
  liquidity of the company.'

  "Messrs. Ward and McAllister stated that they and their respective
  Boards are committed to maximizing shareholder value and will continue
  to do so after the merger is completed. In order to ensure that Phelps
  Dodge or any interested buyer is able to present a bona fide proposal
  to acquire 100% of the stock of the Company, during the first 90 days
  following completion of the merger, stockholders will have the right to
  call a meeting to redeem the rights plan. In addition, change in
  control provisions in any employment contracts entered into by the
  Company will be waived for that same 90 day period."

  On August 25, 1999, Messrs. Ward and McAllister also sent the following
letter to Mr. Yearley which was attached to the August 25 press release:

                                     "August 25, 1999

  "Mr. Douglas C. Yearley
  Chairman, President and Chief Executive Officer
  Phelps Dodge Corporation
  2600 North Central Avenue
  Phoenix, AZ 85004-3050

  Dear Doug:

  "We and our respective boards have considered your revised proposal to
  acquire our companies. We have the following issues with your proposal:

  "1. The exchange ratios proposed in your August 20 press release do not
      allocate to Cyprus Amax and Asarco holders a fair share of the
      value created by uniting their two companies. We are

                                       10
<PAGE>

     prepared to negotiate a transaction with Phelps Dodge that would
     provide our holders with .4055 shares of Phelps Dodge common stock
     for each Cyprus Amax share, and .5300 Phelps Dodge shares for each
     Asarco share.

  "2. In order for us to proceed with Phelps Dodge, you must make clear
      that Phelps Dodge will undertake all actions necessary to secure
      regulatory approval for your proposed transaction including any
      divestiture or similar action required, and will provide credible
      assurances that such regulatory approval will be forthcoming. The
      statements in your letters concerning antitrust issues are not
      sufficient on this point.

  "3. You have not proposed a form of contract for your transaction. We
      would be prepared to proceed on the basis of representations,
      warranties and covenants made by Cyprus Amax and Asarco to each
      other in their merger agreement, with similar representations,
      warranties and covenants made by Phelps Dodge.

  "4. Your letter did not indicate whether your proposal was subject to
      due diligence. A due diligence requirement introduces substantial
      uncertainty as to your proposal. We would expect, as part of our
      effort to close our pending merger or any potential transaction
      with you as quickly as possible, that you would not require any
      further due diligence with respect to either Cyprus Amax or Asarco.

  "We strongly believe that the combination of Cyprus Amax and Asarco,
  without the effect of combining further with Phelps Dodge, provides
  greater value to Cyprus Amax and Asarco holders than your August 20
  proposal, poses fewer regulatory issues and can be completed more
  quickly. Accordingly, we will be proceeding to present that transaction
  to our stockholders and to closing on September 30, 1999. We are
  prepared, however, to negotiate a transaction that involves all three
  companies that satisfies all the foregoing requirements. For your
  information, we are attaching to this letter a copy of the press
  release Asarco and Cyprus Amax issued today concerning our response to
  Phelps Dodge. We also want to advise you that apart from this
  communication, neither party has waived any of its legal or other
  rights, or rights or obligations under our merger agreement.

                                     Sincerely,

  /s/                                /s/
  Francis R. McAllister              Milton H. Ward
  Chairman and Chief                 Chairman, Chief Executive
  Executive Officer                  Officer and President
  ASARCO Incorporated                Cyprus Amax Minerals
                                     Company"

  At its August 25, 1999 meeting, the Cyprus Amax Board of Directors
reconfirmed its recommendation that stockholders vote for adoption of the
Merger Agreement with ASARCO.

  In approving the Revised ASARCO/Cyprus Amax Proposal and reconfirming its
recommendation to the stockholders, the Cyprus Amax Board of Directors
consulted with its financial and legal advisors and considered a variety of
factors, including the following:

  1. The Board of Directors considered the advantages that the Business
     Combination between Cyprus Amax and ASARCO provides to Cyprus Amax
     and its stockholders, including that the combined Asarco Cyprus
     would be a stronger, more efficient competitor in the copper
     industry, would have an improved ability to meet the challenges of
     low copper prices, would be better able to benefit from and would
     generate substantial cash flow during the periods of strong copper
     prices, would be able to lower costs through increased purchasing
     power, and would have increased capitalization.

                                      11
<PAGE>

  2. The Board of Directors considered that Merrill Lynch Pierce, Fenner
     & Smith Incorporated, Cyprus Amax's financial advisor, rendered its
     oral opinion at the August 25, 1999 board meeting that, as of such
     date, the exchange ratio in the Merger Agreement with ASARCO was
     fair from a financial point of view to the stockholders of Cyprus
     Amax.

  3. The Board of Directors considered that the special payment of $5.00
     per share to the stockholders of the combined Asarco Cyprus would
     enable stockholders to receive an immediate and significant cash
     benefit from the Business Combination, while leaving the combined
     company with a strong balance sheet and sufficient liquidity.

  4. The Board of Directors considered that the Revised ASARCO/Cyprus
     Amax Proposal allows Cyprus Amax to continue to pursue the Business
     Combination with ASARCO on a basis that does not preclude Phelps
     Dodge (or any other potential merger partner) from subsequently
     completing a business combination with the combined company, while
     preserving the opportunity for stockholders to realize the benefits
     of the merger with ASARCO, even if Phelps Dodge determines not to
     pursue its proposal.

  5. The Board of Directors considered the fact that the Business
     Combination with ASARCO is the subject of a definitive agreement, as
     well as the terms and conditions of the Merger Agreement, whereas
     the Phelps Dodge proposal is highly contingent and no form of
     contract has been proposed.

  6. The Board considered that the Phelps Dodge proposal does not pay
     Cyprus Amax stockholders a sufficient price to reflect the
     contribution of Cyprus Amax to a three-way combination of Cyprus
     Amax, ASARCO and Phelps Dodge.

  7. The Board of Directors considered that the joint Cyprus Amax/ASARCO
     letter to Phelps Dodge dated August 25, 1999, provided stockholders
     the opportunity to accept a transaction involving Cyprus Amax,
     ASARCO and Phelps Dodge if Phelps Dodge was willing to provide
     certain assurances as to the terms of its proposal and to pay Cyprus
     Amax stockholders a sufficient price to reflect the contribution of
     Cyprus Amax to a three-way combination of Cyprus Amax, ASARCO and
     Phelps Dodge.

  On August 25, 1999, Phelps Dodge issued the following press release:

  "PHOENIX, Aug. 25--Phelps Dodge Corporation (NYSE: PD) confirmed that
  it has received a letter from Asarco Incorporated (NYSE: AR) and Cyprus
  Amax Minerals Company (NYSE: CYM) and issued the following response:

  "The proposal put forth by Asarco and Cyprus Amax does not change
  Phelps Dodge's commitment to complete a three-way combination that is
  beneficial to shareholders of all three companies. While Phelps Dodge
  will review the most recent proposal from Asarco and Cyprus Amax, we
  believe that the Phelps Dodge proposal, which already provides Asarco
  and Cyprus Amax shareholders a 30% premium, a $2.00 annual dividend and
  very substantial participation in the greater upside potential of the
  three-way combination, is fully priced based on public information and
  Phelps Dodge's best estimates of the real, achievable cost synergies in
  a three-way combination. Phelps Dodge indicated that the economic
  aspects of Asarco and Cyprus Amax's proposed three-way merger terms are
  totally unreasonable and would deliver nearly all of the economic value
  of the three-way combination to Asarco and Cyprus shareholders.'

  "Douglas C. Yearley, Chairman and Chief Executive Officer of Phelps
  Dodge, added, "If Asarco and Cyprus Amax are truly interested in a
  negotiated transaction and not just posturing, we would be more than
  willing to begin real discussions. Neither company has attempted to sit
  down with us."

  Phelps Dodge indicated that it intends to complete its review in the
  near term and to make a more definitive and comprehensive response
  thereafter."


                                       12
<PAGE>

  On August 27, 1999, Phelps Dodge issued the following press release:

  "August 27, 1999--Phelps Dodge Corporation (NYSE: PD) announced today
  that it has filed registration materials with the Securities and
  Exchange Commission for exchange offers for all outstanding Asarco
  Incorporated (NYSE: AR) and Cyprus Amax Minerals Company (NYSE: CYM)
  common shares. Phelps Dodge will commence the exchange offers as soon
  as the registration statements are declared effective.

  "In addition, the Company filed preliminary proxy materials with the
  Securities and Exchange Commission to solicit proxies from Asarco and
  Cyprus Amax stockholders to vote against the proposed merger of Asarco
  and Cyprus Amax. Asarco and Cyprus Amax have set shareholder meetings
  for September 30, 1999 to vote on their proposed merger.

  "Separately, Phelps Dodge announced that it has commenced litigation in
  New Jersey and Delaware against Asarco and Cyprus Amax, respectively,
  and their directors, for breaching their fiduciary duties by
  impermissibly prohibiting directors from informing themselves of any
  third-party merger or acquisition proposal and providing excessive
  break-up fees.

  "While we continue to prefer negotiated transactions, we are committed
  to this compelling three-way combination, and are taking all necessary
  steps to complete it,' said Douglas C. Yearley, Chairman and Chief
  Executive Officer of Phelps Dodge. "If Asarco and Cyprus Amax are truly
  interested in a negotiated transaction we are ready to begin
  discussions immediately. We continue to believe our offer is fully
  priced and compelling. We are confident that shareholders of Asarco and
  Cyprus Amax will recognize that our proposals are clearly superior to
  the Asarco/Cyprus Amax no-premium two-way merger. We view the September
  30 vote as a referendum. If Asarco and Cyprus Amax shareholders do
  approve their two-way combination, we will withdraw our substantial
  premium proposal and will not bid further."'

  On August 27, 199 Phelps Dodge sent the following letter to Messrs.
  Ward and McAllister:

  "Mr. Francis R. McAllister         Mr. Milton H. Ward
  Chairman and Chief Executive Officer
                                     Chairman, Chief Executive and President
  ASARCO Incorporated                Cyprus Amax Minerals Company
  180 Maiden Lane                    9100 East Mineral Circle
  New York, NY 10038                 Englewood, CO 80112

  "Dear Frank and Milt:

  "We continue to believe that our proposed three-way combination is
  clearly superior for your shareholders than your proposed no-premium,
  two-party transaction. Our fully priced proposal provides a substantial
  premium, our $2.00 annual dividend and opportunity for participation in
  greater upside potential.

  "In your August 25 letter to us you identified four issues with our
  proposal. We are prepared to accept three of your points. On the fourth
  point, your demand on exchange ratios, we hope that you will reconsider
  your unreasonable position and sit down at the table with us to
  complete our proposed three-way combination.

  "Should you proceed to complete your two-way merger, you will proceed
  alone because we will withdraw our substantial premium proposal and
  will not bid further. Your September 30 vote will be a referendum on
  our proposal.

  "Your proposal on exchange ratios is so unreasonable that its sincerity
  is questionable. It seems to be premised on the flawed assumption that
  since your combined production would be comparable to Phelps Dodge's,
  you should be valued at the same level as Phelps Dodge. Of course, this
  is clearly not what investors believe since it is not reflected in the
  relative market valuations of the three companies. The simplistic
  assumption you seem to be making fails to reflect Phelps Dodge's long
  track record of

                                       13
<PAGE>

  making tough management decisions and delivering significantly greater
  value to shareholders than either ASARCO or Cyprus Amax. Over a fifteen
  year period we have delivered total returns to shareholders of 1,024%
  in contrast to 25% for ASARCO and 102% for Cyprus Amax.

  "Moreover, based on the information in your August 20 Form S-4
  registration statement, it appears that the conclusions arrived at by
  your own investment bankers do not support your exchange ratio demand.
  The exchange ratios you have demanded would deliver nearly all of the
  incremental value to be derived from a three-way combination to your
  shareholders and very little to our shareholders. This is, as you no
  doubt anticipated, completely unacceptable to us.

  "In addition, we don't believe that your shareholders will be fooled by
  the flawed measures you announced which purport to accommodate the
  possibility of a third party transaction during the 90 days following
  completion of your merger. None of your public statements address in
  any meaningful way all of the many steps that would be necessary to
  give your shareholders a realistic opportunity to benefit from an
  attractive third party proposal. Among the additional matters that
  would have to be addressed if you were serious about accommodating
  third party transactions would be to eliminate your staggered Board and
  the highly unusual management entrenchment arrangements built into your
  two-party merger agreement.

  "Those unusual management-entrenchment provisions guarantee no change
  in the roles of the proposed four senior executives of the ASARCO-
  Cyprus combined company prior to the 2002 annual meeting except upon a
  vote of 75% of the Board. Since management will hold 25% of the Board
  seats, this effectively requires a unanimous vote of the non-management
  directors. Because your Board is divided into three classes, this means
  that a buyer of 100% of the outstanding stock of the ASARCO-Cyprus
  combined company would not be able to obtain management control for
  nearly three years.

  "Indeed, even in the two aspects of your 90-day proposal for which you
  try to take credit, there is confusion, contradiction and unnecessary
  complexity. You propose an unspecified shareholder mechanism to redeem
  your poison pill which is inevitably more cumbersome than simple Board
  action. Secondly, we noted with interest the statement in your August
  25 press release that "In addition, change in control provisions in any
  employment contracts entered into by the Company will be waived for
  that same 90 day period.' We were therefore surprised to read the
  contradictory statement in the Form 8-K you filed yesterday that:

    "The rights and benefits under the existing [change of control]
    arrangements with the employees . . . of each of Cyprus Amax and
    ASARCO, however, will remain in full force and effect and will
    be unaffected during the 90 days following completion of the
    business combination, as will any rights under arrangements
    entered into with such employees in substitution for any
    existing arrangements.'

  "Frankly, we believe that all of your statements concerning the 90-day
  period are no more than a public relations gambit. There is no evidence
  in your conduct to date that you have any willingness to pursue
  transactions that are in the best interests of your shareholders. With
  regard to the three points in your August 25 letter other than the
  exchange ratio, we are pleased to confirm that:

    .  We are prepared to enter into a merger agreement with
       substantially the same representations, warranties and covenants
       as those contained in your July 15 merger agreement.

    .  This proposal is not subject to due diligence.

    .  We have studied the regulatory issues carefully and are confident
       that all necessary regulatory approvals for our three-way
       combination will be obtained on a timely basis. We would be
       pleased to give you strong contractual assurances on this point.
       If you take seriously your fiduciary duty and want to inform
       yourselves about a compelling transaction that would be in the
       best interests of your shareholders, let's sit down and
       negotiate. If not, your shareholders will decide which
       alternative they prefer on September 30.


                                       14
<PAGE>

              Sincerely,

<TABLE>
         <S>                                          <C>
         /s/                                          /s/
         Douglas C. Yearley                           J. Steven Whisler
         Chairman and                                 President and
         Chief Executive Officer                      Chief Operating Officer"
</TABLE>

  On September 3, 1999, Phelps Dodge commenced the Phelps Dodge Offer and
filed the Schedule 14D-1 with the Commission. In addition, on such date Phelps
Dodge commenced a separate offer to exchange 0.3135 of a share of Phelps Dodge
Common Stock for each share of Cyprus Amax Common Stock.

 ASARCO Board's Recommendation

  On September 8, 1999, the ASARCO Board of Directors met with ASARCO's
management and legal and financial advisors to consider the Phelps Dodge
Offer. At such meeting, the ASARCO Board of Directors unanimously (i)
determined to reject the Phelps Dodge Offer as inadequate and not in the best
interests of ASARCO and its stockholders, (ii) determined to recommend that
all holders of ASARCO Common Stock reject the Phelps Dodge Offer and not
tender their shares to Phelps Dodge and, (iii) reaffirmed its determination
that the terms of the Business Combination with Cyprus Amax are fair to, and
in the best interests of, ASARCO and its stockholders.

 Reasons for the ASARCO Board's Recommendation

  In reaching its conclusions and recommendations described above, the ASARCO
Board of Directors considered a number of factors, including the following:

  1. The advantages to the stockholders of ASARCO by virtue of becoming
     stockholders of Asarco Cyprus through the Business Combination,
     including:

    .  ASARCO stockholders retain 36.5% of the $275 million of annual
       savings created by the Business Combination (as opposed to the 15.9%
       of the savings expected from the Phelps Dodge Offer).

    .  Asarco Cyprus will have cash costs of 50 cents per pound of copper
       and a break-even price of below 65 cents per pound of copper.

    .  Asarco Cyprus will generate significant earnings and cash flow
       accretion.

    .  Asarco Cyprus will have a larger ore reserve base than Phelps Dodge.

    .  Asarco Cyprus will have a strong balance sheet and sufficient
       liquidity.

    .  Asarco Cyprus will be the largest publicly traded copper company.

  2. The fact that the Phelps Dodge Offer inequitably fails to compensate
     ASARCO and Cyprus Amax stockholders for their relative contribution to a
     three-way combination with Phelps Dodge.

  3. The written opinion, dated September 8, 1999, of Credit Suisse First
     Boston Corporation ("Credit Suisse First Boston") to the effect that, as
     of the date of such opinion and based upon and subject to the matters
     set forth therein, the exchange ratio of 0.4098 of a share of Phelps
     Dodge Common Stock for each outstanding share of ASARCO Common Stock
     provided for in the Phelps Dodge Offer was inadequate, from a financial
     point of view, to such holders. A copy of the opinion of Credit Suisse
     First Boston, which sets forth the matters considered, assumptions made,
     and limitations on the review undertaken by Credit Suisse First Boston,
     is attached hereto as Exhibit 5 and is incorporated herein by reference.
     Credit Suisse First Boston's opinion is addressed to the ASARCO Board of
     Directors, addresses only the inadequacy, from a financial point of
     view, to the holders of ASARCO Common Stock of the 0.4098 exchange ratio
     provided for in the Phelps Dodge Offer and does not constitute a
     recommendation to any stockholder as to any matter relating to the
     Phelps Dodge Offer or the Business Combination. Stockholders are urged
     to read the opinion of Credit Suisse First Boston in its entirety.

                                      15
<PAGE>

  4. The special $5.00 per share payment to stockholders of Asarco Cyprus
     immediately following the Business Combination enables ASARCO
     stockholders to receive an immediate and significant cash payment.

  5. A three-way combination raises serious issues under the antitrust laws,
     which in turn create doubts about the viability of the transaction. In
     this connection, the ASARCO Board considered that the Phelps Dodge Offer
     is conditioned upon the expiration or earlier termination of the
     required waiting period under the Hart-Scott-Rodino Antitrust
     Improvements Act of 1976, as amended (the "HSR Act"), and that Phelps
     Dodge has not yet even filed the required notification under the HSR
     Act. In contrast, the applicable waiting period for the Business
     Combination between ASARCO and Cyprus Amax has expired.

  6. The Phelps Dodge Offer is highly conditional. Specifically, it is
     subject to the following conditions, among others:

    .  Minimum Condition. At least 20,841,952 shares of ASARCO Common Stock
       (52.4% of the total number currently outstanding) must be tendered.

    .  HSR Condition. The applicable waiting period under the HSR Act must
       have expired or been terminated. In addition, according to Phelps
       Dodge, certain large shareholders of ASARCO may be required to file
       and await expiration of a waiting period in order to receive more
       than $15 million worth of Phelps Dodge Common Stock. This could
       entail an escrow of shares due to any holder who fails to make the
       required filing or whose waiting period has not expired.

    .  Phelps Dodge Stockholder Approval. The shareholders of Phelps Dodge
       must approve the Phelps Dodge Offer at a meeting presently scheduled
       to be held October 13.

    .  Rights Condition. The Asarco Board of Directors must redeem the
       Rights issued under the ASARCO Rights Plan or the ASARCO Rights Plan
       must otherwise be rendered inapplicable to the Phelps Dodge Offer.

    .  Takeover Defense Condition. Phelps Dodge must get more than 80% of
       the outstanding shares of Asarco Common Stock in the Phelps Dodge
       Offer or the terms of Article 7 of ASARCO's Restated Certificate of
       Incorporation must be rendered inapplicable to the Phelps Dodge
       Offer.

    .  Other Conditions. The Merger Agreement must have been terminated. A
       tax opinion from Phelps Dodge's own counsel must be rendered to
       Phelps Dodge -- which the Board noted is a condition completely in
       Phelps Dodge's control.

    In light of the highly conditional nature of the Phelps Dodge Offer the
    Board of Directors of ASARCO considered that on September 30 the
    Business Combination will be the only possible transaction which is
    capable of providing immediate and substantial value to stockholders.

  7. Consummation of the Business Combination will in no way impede any offer
     that Phelps Dodge might wish to make after September 30 or, indeed, that
     any other third party might wish to make.

  The foregoing discussion of the information and factors considered by the
ASARCO Board of Directors is not intended to be exhaustive but includes all
material factors considered by the Board. The ASARCO Board of Directors did
not assign relative weights to the foregoing factors or determine that any
factor was of particular importance, and individual directors may have given
differing weights to different factors. Rather, the Board viewed its position
and recommendation as being based on the totality of the information presented
to and considered by it.

  THE ASARCO BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT ALL HOLDERS OF
ASARCO COMMON STOCK REJECT THE PHELPS DODGE OFFER AND NOT TENDER THEIR SHARES
TO PHELPS DODGE. THE ASARCO BOARD OF DIRECTORS HAS UNANIMOUSLY REAFFIRMED ITS
DETERMINATION THAT THE TERMS OF THE BUSINESS COMBINATION WITH CYPRUS AMAX ARE
FAIR TO, AND IN BEST INTERESTS OF, ASARCO AND ITS STOCKHOLDERS.

                                      16
<PAGE>

  This Statement does not constitute a solicitation of proxies for any meeting
of ASARCO's stockholders. Such solicitation by ASARCO is being made only
pursuant to separate proxy materials complying with the requirements of
Section 14(a) of the Securities Exchange Act of 1934, as amended (the
"Exchange Act"). In addition, this Statement is neither an offer to sell nor a
solicitation of offers to buy any securities which may be issued in the
Business Combination. The issuance of such securities will be registered under
the Securities Act of 1933, as amended (the "Securities Act"), and such
securities will be offered only by means of a prospectus complying with the
requirements of the Securities Act.

Item 5. Persons Retained, Employed or to be Compensated.

  Pursuant to the terms of the engagement of Credit Suisse First Boston,
ASARCO has agreed to pay Credit Suisse First Boston upon completion of the
Business Combination with Cyprus Amax an aggregate fee of $4.7 million for its
financial advisory services. In addition, for additional services in
connection with the Phelps Dodge Offer, Credit Suisse First Boston will be
paid additional fees in an amount that will be mutually agreed upon. ASARCO
also has agreed to reimburse Credit Suisse First Boston for all of its out-of-
pocket expenses, including the fees and expenses for legal counsel and any
other advisor retained by Credit Suisse First Boston, and to indemnify Credit
Suisse First Boston and related persons and entities against liabilities,
including liabilities under the federal securities laws, arising out of Credit
Suisse First Boston's engagement.

  Credit Suisse First Boston has in the past provided financial services to
ASARCO and Cyprus Amax unrelated to the Business Combination and the Phelps
Dodge Offer, for which Credit Suisse First Boston has received compensation.
In the ordinary course of business, Credit Suisse First Boston and its
affiliates may actively trade the debt and equity securities of ASARCO, Phelps
Dodge and Cyprus Amax for their own accounts and for the accounts of customers
and, accordingly, may at any time hold long or short positions in such
securities.

  ASARCO has retained Morrow & Co. ("Morrow") to assist ASARCO in connection
with its communications with its stockholders with respect to, and to provide
other services to ASARCO in connection with, the Business Combination and the
Phelps Dodge Offer. Morrow will receive reasonable customary compensation for
its services and reimbursement of out-of-pocket expenses in connection
therewith. ASARCO has agreed to indemnify Morrow against certain liabilities
arising out of or in connection with its engagement.

  ASARCO has retained Kekst & Co. ("Kekst") as its public relations advisor in
connection with the Business Combination and the Phelps Dodge Offer. Kekst
will receive reasonable and customary compensation for its services and
reimbursement of out-of-pocket expenses arising out of or in connection with
its engagement.

  Except as set forth above, neither ASARCO nor any person acting on its
behalf has employed, retained or compensated any other person to make any
solicitations or recommendations to stockholders on its behalf concerning the
Business Combination or the Phelps Dodge Offer.

Item 6. Recent Transactions and Intent With Respect to Securities.

  (a) To the best knowledge of ASARCO, no transactions in ASARCO Common Stock
have been effected during the past 60 days by ASARCO or any executive officer,
director, affiliate or subsidiary of ASARCO.

  (b) To the best knowledge of ASARCO, its executive officers, directors,
affiliates and subsidiaries do not presently intend to tender, pursuant to the
Phelps Dodge Offer, any shares of ASARCO Common Stock which are held of record
or are beneficially owned by such persons or to otherwise sell any such
shares.

Item 7. Certain Negotiations and Transactions by Subject Company.

  (a) and (b) Item 4 above contains a description of the various contacts
between ASARCO and Phelps Dodge and meetings of the ASARCO Board of Directors
between August 10, 1999, the date of Mr. Yearley's

                                      17
<PAGE>

initial communication with ASARCO, and September 8, 1999, the date on which
the Phelps Dodge Offer and the Business Combination were reviewed and
considered by the Board of Directors of ASARCO with the assistance of ASARCO's
management and its legal and financial advisors. As more fully described in
Item 4, at its September 8, 1999 meeting, the Board of Directors of ASARCO
unanimously (i) determined to reject the Phelps Dodge Offer as inadequate and
not in the best interests of ASARCO and its stockholders, (ii) determined to
recommend that all holders of ASARCO Common Stock reject the Phelps Dodge
Offer and not tender their shares to Phelps Dodge and (iii) reaffirmed its
determination that the terms of the Business Combination with Cyprus Amax are
fair to, and in the best interests of, ASARCO and its stockholders. The
factors considered by the ASARCO Board of Directors in making its
determinations with respect to the Business Combination and the Phelps Dodge
Offer are described in Item 4 above.

  At its September 8 meeting, the ASARCO Board of Directors determined to
postpone the occurrence of a Distribution Date (as defined in the ASARCO
Rights Plan) as a result of the public announcement of the Phelps Dodge Offer
until such later date as determined by the ASARCO Board of Directors.

  Except as described in this Item 7 and under Item 4 above, ASARCO is not
engaged in any negotiation in response to the Phelps Dodge Offer which relates
to or would result in (i) an extraordinary transaction, such as a merger or
reorganization, involving ASARCO or any of its subsidiaries, (ii) a purchase,
sale or transfer of a material amount of assets of ASARCO or any of its
subsidiaries, (iii) a tender offer for or other acquisition of securities by
or of ASARCO or (iv) a material change in the present capitalization or
dividend policy of ASARCO.

Item 8. Additional Information to be Furnished.

  Litigation. On August 24, 1999, Phelps Dodge and its directly owned
subsidiary AAV Corporation ("AAV") commenced an action by order to show cause
in the Superior Court of the State of New Jersey, Chancery Division, Mercer
County, pursuant to N.J.S.A. 14A:5-28 to seek stockholder records from ASARCO.
This action is captioned Phelps Dodge Corp. and AAV Corp. v. ASARCO Inc.,
Docket No. MER-C-81-99. ASARCO opposed the application and argument was heard
before Judge Judith Yaskin on August 26, 1999. At the hearing, the Court ruled
that stockholder lists and related documents must be made available to Phelps
Dodge and AAV within forty-eight hours after the filing of their preliminary
proxy materials with the Commission.

  In addition, Phelps Dodge commenced an action in the Superior Court of the
State of New Jersey against ASARCO, its Board of Directors and Cyprus Amax,
alleging that ASARCO and its Board of Directors, aided and abetted by Cyprus
Amax, breached their fiduciary duties to ASARCO stockholders. Specifically,
Phelps Dodge alleges that ASARCO and its directors have breached their
fiduciary duties by entering into the Merger Agreement which purportedly
restricts ASARCO's ability to consider Phelps Dodge's proposal. Phelps Dodge
has also challenged the termination fee payable by ASARCO in certain
circumstances. Furthermore, Phelps Dodge also challenges corporate governance
provisions in the Merger Agreement claiming that they allegedly disenfranchise
stockholders. The complaint also alleges that ASARCO and Cyprus Amax have set
their stockholder meetings and record dates to favor their own Mergers and
have sought to favor and entrench management at the expense of stockholders.
Furthermore, the complaint claims that ASARCO's failure to redeem or amend the
ASARCO Rights Plan constitutes a breach of its fiduciary duties. Phelps Dodge
is seeking injunctive relief to remedy these alleged breaches of duty,
including enjoining the Business Combination and court orders declaring that
the Boards of ASARCO and Cyprus Amax failed to make good faith efforts to
obtain information about and adequately consider the Phelps Dodge proposal and
compelling the Boards of those two companies to consider the proposal and
remove impediments preventing consideration of the proposal. On September 7,
1999, the court stayed the action in favor of parallel litigation in Delaware,
provided that ASARCO and the members of the ASARCO Board of Directors consent
to personal jurisdiction there.

  In the Delaware lawsuit, Phelps Dodge has sued Cyprus Amax and its Board of
Directors in the Court of Chancery of the State of Delaware, alleging that
they, aided and abetted by ASARCO, breached their fiduciary duties. This
lawsuit is based on substantially the same facts and circumstances alleged in
the New Jersey action.

                                      18
<PAGE>

  In addition, a purported class action captioned Sterns v. McAllister, et
al., has been brought in the Superior Court of the State of New Jersey against
ASARCO and the ASARCO Board of Directors alleging that the defendants breached
their fiduciary duties to stockholders by entering into the Merger Agreement
and by failing to maximize shareholder value in ASARCO. The Sterns complaint
seeks both equitable relief and damages.

  In addition, a number of Cyprus Amax stockholders have filed class action
lawsuits in the Court of Chancery of the State of Delaware, alleging that
Cyprus Amax and its board of directors have breached their fiduciary duties
based on substantially the same facts alleged in the Phelps Dodge actions.
ASARCO has been named as a defendant in two of these actions, accused of
aiding and abetting the alleged breaches of fiduciary duty. These actions seek
to enjoin the Business Combination, in addition to other equitable relief and
damages.

  The ASARCO Rights Plan. The ASARCO Rights Plan provides for the issuance of
one Right for each outstanding share of ASARCO Common Stock. Each Right
entitles the holder to purchase one one-hundredth of a share of Junior
Participating Preferred Stock, without par value, at a price of $90.00 per one
one-hundredth of a share.

  Initially, the Rights will be evidenced by certificates representing shares
of ASARCO Common Stock and will be transferable only in connection with the
transfer of the underlying common stock. No separate certificates representing
the Rights will be distributed. The Rights will separate from the shares of
ASARCO Common Stock and be represented by separate certificates on the earlier
of (i) the close of business on the tenth business day after a person acquires
15% of the outstanding shares of ASARCO Common Stock or (ii) the close of
business on the tenth business day (unless the Board of Directors of ASARCO
sets a later date) after a person commences a tender or exchange offer which
would result in such person being the beneficial owner of 15% of the
outstanding shares of ASARCO Common Stock (the earlier of (i) and (ii), the
"Distribution Date").

  After the Rights separate from the shares of ASARCO Common Stock,
certificates representing the Rights (the "Rights Certificates") will be
mailed to record holders of ASARCO Common Stock. Once distributed, the Rights
will be represented solely by the Rights Certificates.

  All shares of ASARCO Common Stock issued prior to the date the Rights
separate from the ASARCO Common Stock will be issued with the Rights attached.
The Rights will not be exercisable until the date the Rights separate from the
ASARCO Common Stock. The Rights will expire on January 31, 2008 unless earlier
redeemed by ASARCO.

  If an acquiror becomes the beneficial owner of 15% or more of the
outstanding shares of ASARCO Common Stock (except pursuant to a tender or
exchange offer for all outstanding shares of ASARCO Common Stock at a price
and on terms determined by 2/3 of the continuing directors to be in the best
interests of ASARCO and it shareholders), then each Right will become
exercisable and will entitle the holder to purchase a number of shares of
ASARCO Common Stock having a then current market value of twice the exercise
price of each Right.

  If an acquiror becomes the beneficial owner of 15% or more of the
outstanding shares of ASARCO Common Stock and either (i) ASARCO merges into
another entity and is not the surviving corporation, (ii) another entity
merges into ASARCO and all or part of the outstanding shares of ASARCO Common
Stock are changed into or exchanged for securities of another entity or cash
or any other property or (iii) ASARCO sells more than 50% of its assets or
earning power to another entity, each Right will entitle the holder to
purchase a number of shares of common stock of such other entity having a then
current market value of twice the exercise price of each Right.

  Under the ASARCO Rights Plan, any Rights that are or were owned by an
acquiror of more than 15% of the outstanding shares of ASARCO Common Stock
will be null and void.

  The Board of Directors of ASARCO may, at its option, redeem all of the
outstanding Rights under the ASARCO Rights Plan prior to the earlier of (1)
the tenth business day following the date at which an acquiror obtains 15% or
more of the outstanding shares of ASARCO Common Stock or (2) the final
expiration date of

                                      19
<PAGE>

the ASARCO Rights Plan. The redemption price under the ASARCO Rights Plan will
be $0.01 per Right, subject to adjustment. The right to exercise the Rights
will terminate upon the action of the Board of Directors of ASARCO ordering
the redemption of the Rights and the only right of the holders of the Rights
will be to receive the redemption price.

  Holders of Rights have no rights as shareholders of ASARCO, including the
right to vote or receive dividends, simply by virtue of holding the Rights.

  The ASARCO Rights Plan provides that ASARCO may amend the provisions of the
ASARCO Rights Plan, except for those governing the redemption price of the
Rights, without the approval of the holders of the Rights, prior to (1) the
tenth business day after an acquiror acquires 15% or more of the outstanding
shares of ASARCO Common Stock or (2) the tenth business after someone
commences a tender or exchange offer which would result in such person being
the beneficial owner of 15% or more of the outstanding shares of ASARCO Common
Stock. However, after the date that an acquiror acquires 15% or more of the
outstanding shares of ASARCO Common Stock or the date that someone commences a
tender offer which would result in such person being the beneficial owner of
15% or more of the outstanding shares of ASARCO Common Stock, ASARCO may not
amend the ASARCO Rights Plan in any way which would adversely affect the
interests of the holders of Rights Certificates.

  On July 15, 1999, the ASARCO Board of Directors amended the ASARCO Rights
Plan such that the ASARCO Rights Plan was made inapplicable to the
transactions contemplated by the Merger Agreement.

  On September 8, the ASARCO Board of Directors determined to postpone the
occurrence of a Distribution Date as a result of the public announcement of
the Phelps Dodge Offer until such later date as determined by the ASARCO Board
of Directors.

  Antitakeover Provisions. Sections 14A:10A-4 and -5 of the New Jersey
Business Corporation Act restricts the ability of certain persons to acquire
control of a New Jersey corporation. In general, a New Jersey corporation with
its principal executive offices or significant operations in New Jersey may
not engage in a business combination with an interested stockholder for a
period of five years following the interested stockholder's becoming such.
Such a business combination would be permitted where it is approved by the
board of directors prior to the stock acquisition. Covered business
combinations include certain mergers, dispositions of assets or shares and
recapitalizations. An interested stockholder is generally a stockholder owning
at least 10% of the voting power of a corporation's outstanding shares.

  In addition, New Jersey corporations may not engage at any time with any
interested shareholder in a business combination other than (i) a business
combination approved by the board of directors of such corporation prior to
the stock acquisition,(ii) a business combination approved by the affirmative
vote of the holders of 66 2/3% of the voting stock not beneficially owned by
such interested shareholder at a meeting for such purpose, or (iii) a business
combination in which the interested shareholder pays a formula price designed
to ensure that all other shareholders receive at least the highest price per
share paid by such interested shareholder.

  A New Jersey corporation may not opt out of the foregoing provisions and the
ASARCO Board of Directors has taken the necessary action to make the foregoing
provisions of New Jersey law inapplicable to the Business Combination and the
related transactions.

  The ASARCO certificate of incorporation provides that certain transactions,
including a merger, significant asset sales and certain issuances or transfers
of securities, with the beneficial owner of more than 10% of any class of
capital stock of ASARCO generally require the affirmative vote of the holders
of 80% of the outstanding shares of all classes of stock, voting together as a
single class. The ASARCO certificate of incorporation also provides that
certain affiliated transactions with an interested stockholder or any
affiliate of an interested shareholder of ASARCO require, in addition to any
vote required by law or in the ASARCO certificate of incorporation or by-laws,
approval by a majority of the continuing directors.

                                      20
<PAGE>

  "Affiliated transaction" is defined in ASARCO's certificate of
incorporation, and generally includes significant transactions involving
aggregate fair market value or commitments of more than $10 million or more
than 1% of ASARCO's consolidated assets, and certain other material
arrangements. "Interested Stockholder" is also defined in the ASARCO
certificate of incorporation and generally means a beneficial owner of voting
stock representing 10% or more of the votes entitled to be cast by the holders
of all then outstanding shares of voting stock of ASARCO. "Continuing
director" is also defined in the ASARCO certificate of incorporation and
generally means a director that is not affiliated with the interested
stockholder and that was a director before the stockholder became an
interested stockholder.

  The ASARCO Board of Directors has taken the necessary action to make the
foregoing provisions of the ASARCO certificate of incorporation inapplicable
to the Business Combination and the related transactions.

Item 9. Material to be Filed as Exhibits.

<TABLE>
<CAPTION>
 Exhibit No.
 -----------
 <C>         <S>
 Exhibit 1.  Pages 10 through 20 of the Proxy Statement, dated March 15, 1999,
             relating to ASARCO's 1999 Annual Meeting of Stockholders.

 Exhibit 2.  Pages 62 through 64, 66, 72 through 73 and 79 of the Joint Proxy
             Statement and Prospectus of ASARCO and Cyprus Amax, dated August
             20, 1999, relating to ASARCO's Special Meeting of Stockholders
             scheduled to be held on September 30, 1999.

 Exhibit 3.  Page 13 of the Form 8-K of Asarco Cyprus, dated August 20, 1999.

 Exhibit 4.  Letter to Stockholders of ASARCO, dated September 9, 1999.*

 Exhibit 5.  Opinion of Credit Suisse First Boston Corporation, dated September
             8, 1999.*

 Exhibit 6.  Complaint filed in Phelps Dodge v. ASARCO et al., Superior Court
             of New Jersey Chancery Division: Mercer County, August 27, 1999.

 Exhibit 7.  Complaint filed in Sterns v. McAllister et al., Superior Court of
             New Jersey Chancery Division: Mercer County, August 24, 1999.

 Exhibit 8.  Complaint filed in Greenfield v. Osborne, et al., Superior Court
             of New Jersey Chancery Division: Mercer County, August 25, 1999.

 Exhibit 9.  Complaint filed in Steiner v. Cyprus Amax et al., Court of
             Chancery of the State of Delaware in and for New Castle County,
             August 23, 1999.

 Exhibit 10. Complaint filed in Miller v. Cyprus Amax et al., Court of Chancery
             of the State of Delaware in and for New Castle County, August 23,
             1999.

 Exhibit 11. Complaint filed in Bruno v. Stookey et al., Court of Chancery of
             the State of Delaware in and for New Castle County, August 24,
             1999.

 Exhibit 12. Complaint filed in Green v. Stookey et al., Court of Chancery of
             the State of Delaware in and for New Castle County, August 24,
             1999.

 Exhibit 13. Complaint filed in Lifshitz v. Stookey et al., Court of Chancery
             of the State of Delaware in and for New Castle County, August 24,
             1999.

 Exhibit 14. Complaint filed in Klotz v. Ward et al., Court of Chancery of the
             State of Delaware in and for New Castle County, August 24, 1999.

 Exhibit 15. Complaint filed in Grill v. Stookey, et al., Court of Chancery of
             the State of Delaware in and for New Castle County, August 26,
             1999.

 Exhibit 16. Complaint filed in Phelps Dodge et al v. Cyprus Amax et al., Court
             of Chancery for the State of Delaware in and for New Castle
             County, August 27, 1999.
 Exhibit 17. Press Release issued by ASARCO Incorporated and Cyprus Amax
             Minerals Company on September 9, 1999.
</TABLE>
- --------
* Included with Schedule 14D-9 mailed to stockholders.

                                      21
<PAGE>

                                   SIGNATURE

  After reasonable inquiry and to the best of its knowledge and belief, the
undersigned certifies that the information set forth in this statement is
true, complete and correct.

                                          ASARCO INCORPORATED

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

Dated: September 9, 1999

                                      22

<PAGE>

                                                                    EXHIBIT 99.1

COMMITTEE REPORT ON EXECUTIVE COMPENSATION

The Organization and Compensation Committee of the Board of Directors has
furnished the following report on executive compensation.

The compensation of Asarco's executive officers other than those who are also
directors is reviewed and established annually by the Organization and
Compensation Committee of the Board of Directors. For officers who were also
directors in 1998 (Messrs. Osborne, McAllister and Morano) the Committee made
compensation recommendations to the Board absent those officers, which
established their compensation. The Board did not modify or reject in any
material way the Committee's recommendations for 1998 compensation. The
Committee met a total of seven times during 1998. Long-term incentive
compensation awards for 1998 to officers and other salaried employees were
approved by the Committee (and recommended to the Board with respect to Messrs.
Osborne and McAllister) at the Committee's January 1998 meeting.

The Company retains an independent compensation consulting organization to
advise and assist the Company and the Committee in connection with compensation
matters. During 1998 the consulting organization made recommendations to the
Committee on base salary, cash incentive compensation and long-term incentive
compensation matters for the Chief Executive Officer and each other Asarco
executive position. Such recommendations included target levels for base salary
and cash incentive compensation, long-term income targets, weighting of stock
option and restricted stock values, and appropriate stock option and restricted
stock valuation methods. The Committee carefully considered the recommendations
and acted within the scope of the recommendations in these areas.

Asarco's executive officer compensation is composed of base salary and incentive
compensation.

The Company's policy for base salary for executive officers is to establish par
compensation levels for each position based on competitive data and the
responsibilities and value of each executive position to the Company.  The
Committee considers compensation information from other companies in the mining
and metals industry. It also considers compensation information from smaller,
larger and comparably sized companies in other industries. The Committee then
considers individual and corporate performance in establishing salary levels
within a competitive range.

The Committee believes that the S&P Metals Miscellaneous Group, which includes
only four metals companies in addition to the Company, and the S&P 500 Index,
both used for comparing shareholder returns, do not necessarily represent the
Company's most direct competitors for executive talent. In making decisions that
affect executive compensation the Committee reviews three different comparator
groups proposed by its independent consultants: one group includes 13 process-
oriented companies; another group is comprised of 50 companies engaged in heavy
industry; and a third group consists of approximately 175 companies having
annual revenues of $1 billion to $6 billion (the "Comparator Groups"). These
groups represent companies whose operational and performance characteristics are
capable of comparison with those of the Company, allowing for meaningful
comparisons of executive compensation. The Comparator Groups include three of
the five companies in the S&P Metals Miscellaneous Group and approximately 110
companies in the S&P 500 Index.

Base salaries for the Company's executive officers in 1998 were slightly above
the median of the Comparator Groups studied by the Committee and represented a
slightly greater percentage of total


                                      10
<PAGE>

compensation, relative to the median for the Comparator Groups. Because the
cyclical nature of the Company's business can result in significant changes in
incentive compensation from year to year the Committee believes that
compensation levels are more stable and, accordingly, more competitive when base
salaries comprise a larger portion of total cash compensation. In general, the
Committee structures total compensation for each salaried position to be
approximately at the median of total compensation for comparable positions among
the Comparator Groups.

Although the Company's base salaries are set at levels intended to be
competitive with the Company's industry peers, the Committee also takes into
consideration the Company's performance relative to companies in the Comparator
Groups as part of its compensation review.  In this regard, the Company's
success in meeting transactional, operational and financial objectives are all
taken into consideration.  Because the relative importance of each objective may
change over time, the Committee does not set fixed Company performance targets
for purposes of setting base salaries.  The Company's success or failure in
achieving certain objectives or financial results, however, will generally
affect executive salaries.  Thus, in a downward part of the business cycle,
salary increases may be delayed or salaries even reduced; in strong financial
years, the Company may award larger increases.

In 1998, base salaries for Mr. McAllister and Mr. Morano were increased
effective February 1, 1998, by 16.7% and 9.4%, respectively, associated with the
promotion of Mr. McAllister to President and Mr. Morano to Executive Vice
President.  The salary of one other officer was increased by 6.8% effective
April 1, 1998, in connection with a promotion.  Base salaries for other
executive officers have not been increased since May 1997.

Incentive compensation consists of cash incentive compensation awarded annually
if justified, and long-term incentive compensation.  Long-term incentive
compensation combines restricted stock and stock options and is designed to link
the interests of executive officers with those of stockholders by providing each
executive an incentive to manage the business as an owner with an equity stake.

Annual cash incentive payments are determined under the Asarco Incentive
Compensation Plan and the Asarco Incentive Compensation Plan for Senior Officers
("Senior Officers' Plan"), which are administered by the Organization and
Compensation Committee. Approximately 75% of all active salaried employees of
the Company are eligible for annual cash incentive compensation payments under
the Incentive Compensation Plan. The sole purpose of the Senior Officers' Plan,
which covers only the five most highly compensated officers with respect to a
year in which compensation is awarded, is to assure current federal income tax
deductibility of incentive compensation earned by those five officers whose
compensation might otherwise not be deductible under the Internal Revenue Code.
Incentive awards to the five covered officers are determined pursuant to the
Senior Officers' Plan and the Incentive Compensation Plan, and to the extent
they exceed award levels under the Senior Officers' Plan, such awards may not be
deductible. The Asarco Compensation Deferral Plan permits officers and eligible
employees to defer all or a portion of awards made under the Incentive
Compensation Plan (and, if applicable, the Senior Officers' Plan), and to defer
that portion of salary that could have been deferred under the Savings Plan but
for limitations imposed by the Internal Revenue Code.

Under the Incentive Compensation Plan, a target level of annual incentive
compensation is established for each eligible employee based on the level of
responsibility attached to such employee's position with the Company.  For
executive officers these targets are set slightly below



                                      11
<PAGE>

competitive median levels to compensate for salary targets which are set
slightly above competitive median levels. The officers' levels of responsibility
are determined by the Committee after review of substantially equivalent
positions among the Comparator Groups. Awards to employees are increased or
decreased from a predetermined target level, based upon performance measured at
three levels: individual, operating unit or staff group and Company-wide.
Incentive compensation for the Company's executive officers, and particularly
for the Chief Executive Officer, is determined by individual and Company
performance levels. Company performance in 1998 was evaluated against objectives
previously established by the Board of Directors.

In November 1998 and January 1999 the Committee concluded that, although the
Company had made favorable progress in 1998 towards goals in areas including
reduction of copper operating costs and sale of non-core assets, no incentive
compensation should be awarded under the Incentive Compensation Plan or the
Senior Officers' Plan with respect to 1998 in view of the Company's net loss for
the year.

In meetings in April, June and September 1998, followed in each case by
discussion with the Board, the Committee developed a new formula-based incentive
compensation plan for the Company, which was approved by the Board in October
1998 effective for the year beginning January 1, 1999.

The revised Asarco Incentive Compensation Plan has been designed, among other
things, to reward management for achieving and exceeding annual Return on Equity
("ROE") targets approved by the Board.  The ROE targets will be reviewed by the
Board each year and may be revised by the Board in response to changes in the
Company's strategy. If minimum or better ROE targets are achieved, incentive
compensation will be paid, subject to adjustments for overall corporate and for
unit or performance management group performance, and also for individual
performance.

In January 1998 the Committee approved awards of stock options and restricted
stock to the Company's officers other than Messrs. Osborne and McAllister, and
recommended to the Board awards to those officers.  These awards were made
within long-term incentive income targets based upon analyses by the Company's
compensation consultant.  The consultant supplements data from the Comparator
Groups with broad based survey data to develop target levels of "long-term gain
opportunity" for various levels of total compensation, with greater percentages
of long-term gain opportunity attaching to higher responsibility levels. The
Company's consultant surveys a broader group of companies than those in the
Comparator Groups so as to provide a more complete analysis of competitive long-
term incentive compensation award levels.

The Company normally makes long-term incentive awards on an annual basis and has
not established specific stock ownership objectives for its officers. In 1998,
long-term incentive compensation awards to the Company's executive officers were
at the median of awards made by the companies included in the Comparator Groups
and the consultant's surveys.  In making 1998 long-term incentive awards the
Committee also considered each officer's performance.  The Committee also
considered outstanding options and shares of restricted stock previously awarded
to the executive officers.  In the case of the Chief Executive Officer the
Committee also considered his performance and responsibility in establishing the
Company's strategic goals and directing all elements of its performance.

In July 1998 the Committee approved an award of 118,075 stock options
exercisable at the then current market price of $21.75 per share to a broad
group of 1,217 of the Company's middle



                                      12
<PAGE>

management and other employees. The options were granted during a period when
the Company was deferring any general salary increases in view of low copper
prices.

In meetings in October and November 1998 the Committee determined that it would
be in the best interests of the Company for Mr. Osborne to be entitled to an
office and certain executive-level services following his retirement.  The
Committee recommended to the Board, and the Board approved, a one-year
consulting agreement under which Mr. Osborne will provide consulting services to
the Company for a daily consulting fee of $4,500 with an annual minimum of 23
consulting days of service.  The Company agreed to nominate Mr. Osborne for re-
election in April 1999 as a Company director for a term ending April 2001.

Section 162(m) of the Internal Revenue Code eliminates the Company's Federal
income tax deductions for certain compensation in excess of $1 million paid in a
taxable year to each of the Company's five highest paid officers as reported in
the proxy statement, unless compensation programs meet certain requirements,
principally concerning the adoption of fixed targets.  Accordingly, changes in
Asarco executive compensation programs for annual incentive compensation and for
stock option grants as a result of the provision were approved by Asarco
shareholders in 1996. While the Company considers that restricted stock provides
a form of long-term compensation the value of which is directly related to
Company stock performance, the Committee believes that it is not practical to
change the Company's restricted stock plan provisions to meet the requirements
of Section 162(m). The Committee intends, to the extent practicable, to preserve
deductibility under the Internal Revenue Code of compensation paid to the
Company's executive officers. Although compensation paid is generally
deductible, certain compensation paid to some executives may not be deductible.

                                         Willard C. Butcher, Chairman
                                         James W. Kinnear
                                         Martha T. Muse
                                         John D. Ong
                                         James Wood



                                      13
<PAGE>

EXECUTIVE COMPENSATION

Set forth below is certain information concerning the annual and long-term
compensation for services in all capacities to the Company for fiscal years
1998, 1997 and 1996 of the Company's Chief Executive Officer and the other four
most highly compensated executive officers of the Company:

                           SUMMARY COMPENSATION TABLE


<TABLE>
<CAPTION>
                                                                                                      LONG TERM
                                                                                                      ---------
                                      ANNUAL COMPENSATION                                        COMPENSATION AWARDS
                                      -------------------                                        -------------------
                                                                                                                     SECURITIES
                                                                        OTHER                          UNDERLYING
NAME AND                                                                ANNUAL       RESTRICTED STOCK   OPTIONS      ALL OTHER
PRINCIPAL POSITION                YEAR            SALARY     BONUS   COMPENSATION(1)    AWARDS(2)       (SHARES)  COMPENSATION(3)
                            ------------------------------------------------------------------------------------------------------
<S>                         <C>               <C>       <C>         <C>             <C>             <C>            <C>
Richard de J. Osborne.            1998          $885,000                $ 24,969       $528,710          73,950        $26,550
Chairman of the                   1997           865,000  $957,000        25,588        577,500          67,500         25,950
Board and Chief                   1996           811,672   485,000        28,850        539,750          50,000         24,350
Executive Officer

Francis R. McAllister             1998           518,750       ---        21,969        140,270          27,500         15,563
President and Chief               1997           441,668   335,300        22,588        159,500          25,500         13,250
Operating Officer                 1996           419,008   172,600        25,850        142,875          19,000         12,570

Kevin R. Morano                   1998           382,258       ---        24,969        116,532          22,500         11,468
Executive Vice President          1997           345,340   259,700        25,588        140,250          21,800         10,360
                                  1996           324,672   141,800        28,150        114,300          15,200          9,740

Robert J. Muth                    1998           300,000       ---        21,969         75,530          15,200          9,000
Vice President                    1997           296,668    76,500        22,588         88,000          15,200          8,900
                                  1996           286,672    74,300        24,825         76,200          10,400          8,600

Augustus B. Kinsolving            1998           299,004       ---        20,969         64,740          12,600          1,600
Vice President and                1997           295,004   132,500        22,588         77,000          12,600          1,600
General Counsel                   1996           283,672    75,200        25,850         62,250           9,000          1,500
</TABLE>

(1) Represents annual retainer, stock award and fees received for services as a
director of Southern Peru Copper Corporation. (2) Dollar values of restricted
stock awards are shown as of the date of grant. The number and dollar value of
shares of restricted stock holdings owned at December 31, 1998, and still
subject to restrictions are as follows: Mr. Osborne, 61,500 shares/$930,188; Mr.
McAllister, 16,520 shares/$249,865; Mr. Morano,13,840 shares/$209,330; Mr. Muth,
8,800 shares/$133,100 and Mr. Kinsolving, 7,600 shares/$114,950.  Restrictions
on such shares lapse in equal installments over five years beginning with the
grant dates which occurred during the period from January 1994 through January
1998, except upon a change of control, in which case all shares vest
immediately. Cash dividends paid on shares of restricted stock are not subject
to restrictions.

(3) Amounts shown reflect matching contributions made by the Company for the
named individuals under the Company's Savings Plan and Compensation Deferral
Plan (formerly the Supplemental Savings Plan). The Savings Plan is a qualified
defined contribution profit sharing plan available generally to all United
States salaried employees with one month of service with the Company. Savings
Plan contributions are immediately vested and may be withdrawn subject to
certain restrictions, penalties and suspension periods. The Compensation
Deferral Plan is a non-qualified deferred compensation plan that allows eligible
employees to defer that portion of their salary that could have been deferred
under the Savings Plan but for limitations imposed by the Internal Revenue Code,
and to defer all or part of their eligible incentive compensation, as provided
in the Plan. Salary deferrals are eligible for a Company matching contribution
under the Plan. Matching contributions under both plans may not exceed 3% of the
employee's salary. Compensation deferred and amounts contributed by the Company
may be withdrawn subject to certain restrictions and penalties. Deferrals of
incentive compensation are not eligible for a Company matching contribution.


                                      14
<PAGE>

OPTION GRANTS

Set forth below is further information on grants of stock options under the
Company's 1996 Stock Incentive Plan for the period January 1, 1998 to December
31, 1998. No stock appreciation rights ("SARs") were granted in 1998 or
outstanding as of December 31, 1998.

                       OPTION GRANTS IN LAST FISCAL YEAR
<TABLE>
<CAPTION>

                                                                              GRANT
                                                 INDIVIDUAL GRANTS            VALUE
                                                 -----------------            -----
                          NUMBER OF
                            SHARES
                          UNDERLYING%       OF TOTAL OPTIONS      EXERCISE               GRANT DATE
                           OPTIONS       GRANTED TO EMPLOYEES      OR BASE    EXPIRATION   PRESENT
NAME                      GRANTED(1)        IN FISCAL YEAR        PRICE $/SH    DATE       VALUE(2)
- ---------------------------------------------------------------------------------------------------
<S>                      <C>             <C>                    <C>          <C>         <C>
Richard de J. Osborne.        73,950              15.1%             $21.58     1/27/08    $359,323
Francis R. McAllister.        27,500               5.6%             $21.58     1/27/08     133,623
Kevin R. Morano.              22,500               4.6%             $21.58     1/27/08     109,328
Robert J. Muth                15,200               3.1%             $21.58     1/27/08      73,857
Augustus B. Kinsolving        12,600               2.6%             $21.58     1/27/08      61,223
</TABLE>

     (1) The options were awarded under the Company's stockholder-approved 1996
     Stock Incentive Plan. The option price per share equals the fair market
     value of the Company's Common Stock on the date of grant. The options
     provide for limited rights exercisable upon the occurrence of specified
     events that may materially affect the value of the Company's Common Stock
     and are designated as such by the Committee that administers the Plan,
     including a tender or exchange offer for shares of the Company's Common
     Stock, the replacement of a majority of the Board as a result of a proxy
     contest, a merger or reorganization of the Company, or a liquidation or
     dissolution of the Company. If an exercise event occurs, the holder is
     entitled to receive the cash value of the options at the highest market
     value that the shares traded over a period of sixty days preceding the
     event or, in the event of the consummation of a tender offer, the tender
     offer price, in each case, less the exercise price.

     (2) Based on the Black-Scholes option pricing model, a widely recognized
     method of valuing options. The following assumptions were used in
     determining the value of the options using the model: expected volatility
     of 29.4% based on actual monthly volatility for the preceding five years,
     risk-free rate of return of 5.6% based on the yield of the five year U.S.
     treasury note as of the grant date, annual dividend rate of $0.94 per share
     based on average dividends paid per share over the preceding ten years, and
     exercise of the option five years after the grant date. The actual value,
     if any, an executive may realize will depend on the excess of the stock
     price over the exercise price on the date the option is exercised, so that
     there is no assurance the value realized by an executive will be at or near
     the value estimated by the Black-Scholes model. The model is used for
     valuing market traded options and is not directly applicable to valuing
     stock options granted under the Company's Stock Incentive Plan which cannot
     be sold.



                                      15
<PAGE>

OPTION EXERCISES AND FISCAL YEAR-END VALUES

Set forth below is information concerning stock option exercises by named
executive officers during 1998, including the aggregate value of gains on the
date of exercise, the number of shares covered by exercisable options and the
value of "in-the-money" options as of December 31, 1998. All outstanding options
were exercisable at December 31, 1998.

                    AGGREGATED OPTION EXERCISES IN 1998 AND
                        DECEMBER 31, 1998 OPTION VALUES
<TABLE>
<CAPTION>

                                                             NUMBER OF
                                                        SECURITIES UNDERLYING
                                                            UNEXERCISED         VALUE OF UNEXERCISED
                                                        OPTIONS AT YEAR END         IN-THE MONEY
                          SHARES ACQUIRED    VALUE          EXERCISABLE/             OPTIONS AT
          NAME              ON EXERCISE     REALIZED      UNEXERCISABLE(1)           YEAR END(2)
- ------------------------------------------------------------------------------------------------------
<S>                       <C>              <C>         <C>                     <C>

Richard de J. Osborne.                 __         __            399,450                    --

Francis R. McAllister.              9,000  $  13,290            151,840                    __

Kevin R. Morano                                   __             93,200                    __

Robert J. Muth                                                   52,614

Augustus B. Kinsolving              2,044  $6,457 (3)            73,300                    __
</TABLE>

     (1) The above officers held no unexercisable options at December 31, 1998.
     (2) Based on the New York Stock Exchange--Composite Transactions price for
     the Company's Common Stock of $15.125 on December 31, 1998. (3) All after-
     tax net value realized was received in shares of Common Stock.



                                      16
<PAGE>

SHAREHOLDER RETURN PERFORMANCE PRESENTATION

Set forth below is a line graph comparing the yearly percentage change in the
cumulative total return on the Company's Common Stock against the cumulative
total return on the S&P Composite 500 Stock Index and the S&P Metals
Miscellaneous Group Index for the five year period 1993 to 1998.

                COMPARISON OF FIVE YEAR CUMULATIVE TOTAL RETURN
       ASARCO INCORPORATED, S&P 500 INDEX & S&P METALS MISC. GROUP INDEX


COMP OF FIVE YEAR
                     "Asarco"  "S&P 500"  "S&P Metal"

1993                      100        100          100

1994                   126.44     101.32       116.76

1995                   145.19     139.40       129.16

1996                   116.06     171.41       131.78

1997                   107.58     228.59        88.58

1998                    74.77     293.92        63.72

*TOTAL RETURN ASSUMES REINVESTMENT OF DIVIDENDS **ASSUMES $100 INVESTED ON
12/31/93 IN ASARCO COMMON STOCK, S&P 500 INDEX & S&P METALS GROUP INDEX

The preceding chart analyzes the total return on Asarco's Common Stock compared
to the S&P 500 and the S&P Metals Miscellaneous Group over the five year period
commencing December 31, 1993. In the first year of this period, through December
31, 1994, Asarco's stock had a positive return of 26.4%, the S&P 500 returned
1.3% and the S&P Metal Miscellaneous Group returned 16.8%. In 1995, the return
for Asarco's stock was a positive 14.8% compared to positive returns of 37.6%
for the S&P 500 and 10.6% for the S&P Metals Miscellaneous Group. In 1996,
Asarco's stock provided a negative return of 20.1% compared to positive returns
of 23.0% for the S&P 500 and 2.0% for the S&P Metals Miscellaneous Group. In
1997, Asarco's return was a negative 7.3%, the S&P 500 returned a positive 33.4%
and the S&P Metals Miscellaneous Group returned a negative 32.8%. In 1998,
Asarco's stock provided a negative return of 30.5% compared to a positive return
of 28.6% for the S&P 500 and a negative return of 28.1% for the S&P Metals
Miscellaneous Group.


                                      17
<PAGE>

RETIREMENT PLANS

The following table shows the estimated amount of annual retirement income
(calculated as a single life annuity benefit) payable to employees for life,
commencing at normal retirement at age 65 in 1999, under the Company's qualified
Retirement Benefit Plan for Salaried Employees ("Plan"), covering substantially
all salaried employees, a prior plan of the Company and a supplemental
retirement benefit plan (the "Supplemental Plan"). The Supplemental Plan is a
non-qualified supplemental retirement benefit plan under which any benefits not
payable from Plan assets by reason of the limitations imposed by the Internal
Revenue Code of 1986, as amended (the "Code") and the loss due to the deferrals
of salaries made under the Company's Deferred Income Benefit System and the
Compensation Deferral Plan are paid from the Company's general corporate funds.
The table assumes Social Security benefit levels as in effect on January 1,
1999.


                              PENSION PLAN TABLE

                    APPROXIMATE ANNUAL RETIREMENT BENEFITS
                    --------------------------------------

<TABLE>
<CAPTION>

      FINAL
     AVERAGE         15 YEARS    20 YEARS    25 YEARS    30 YEARS    35 YEARS
   COMPENSATION     OF SERVICE  OF SERVICE  OF SERVICE  OF SERVICE  OF SERVICE
                    ----------  ----------  ----------  ----------  ----------
<S>                 <C>         <C>         <C>         <C>         <C>
       $300,000         64,525      86,033     107,541     129,049     150,557
        400,000         87,025     116,033     145,041     174,049     203,057
        500,000        109,525     146,033     182,541     219,049     255,557
        600,000        132,025     176,033     220,041     264,049     308,057
        700,000        154,525     206,033     257,541     309,049     360,557
        800,000        177,025     236,033     295,041     354,049     413,057
        900,000        199,525     266,033     332,541     399,049     465,557
      1,000,000        222,025     296,033     370,041     444,049     518,057
      1,100,000        244,525     326,033     407,541     489,049     570,557
      1,200,000        267,025     356,033     445,041     534,049     623,057
      1,300,000        289,525     386,033     482,541     579,049     675,557
      1,400,000        312,025     416,033     520,041     624,049     728,057
      1,500,000        334,525     446,033     557,541     669,049     780,557
      1,600,000        357,025     476,033     595,041     714,049     833,057
      1,700,000        379,525     506,033     632,541     759,049     885,557
      1,800,000        402,025     536,033     670,041     804,049     938,057
      1,900,000        424,525     566,033     707,541     849,049     990,557
      2,000,000        447,025     596,033     745,041     894,049   1,043,057
</TABLE>

Benefits are calculated using a final average earnings formula (i.e., average of
the highest consecutive 60 months of the last 120 months of compensation
received "Final Average Compensation"), minus a Social Security offset.

As of January 31, 1999, the following officers had completed the number of years
of service indicated opposite their names: Richard de J. Osborne, 24 years;
Francis R. McAllister, 32 years; Kevin R. Morano, 20 years; Robert J. Muth, 30
years and Augustus B. Kinsolving, 24 years. Under the Plan and Supplemental
Plan, the amounts of covered compensation of such persons for calendar year 1998
were Richard de J. Osborne, $1,842,000, Francis R. McAllister, $854,050, Kevin
R.



                                      18
<PAGE>

Morano, $641,958, Robert J. Muth, $376,500 and Augustus B. Kinsolving, $431,504
and consisted of basic salary and cash incentive compensation payments in the
year received as shown in the Summary Compensation Table and in prior proxy
statements. Cash incentive compensation payments are generally received in the
year following that in which they are earned.

Messrs. Osborne, Muth and Kinsolving are eligible to receive additional
benefits, not included in the amounts shown in the table, under the Company's
supplemental plan for designated officers hired in mid-career (the "Mid-Career
Plan"). The Mid-Career Plan provides supplemental retirement benefits out of the
general funds of the Company for officers holding the rank of Vice President or
higher who are determined by the Organization and Compensation Committee to have
had prior business or professional experience valuable to the Company and
relevant to the positions for which they were employed by the Company, and who
at retirement or termination of employment with the consent of the Company will
have been with the Company as a Vice President or higher for 10 years or more.
The Mid-Career Plan provides for annual benefits equal to 55% of the Final
Average Compensation, which amount is reduced by any benefits payable by the
Company or any other employer under any other pension plan not attributable to
the employee's contributions, and by all Social Security benefits payable at the
time of retirement or early termination. All benefits under the Mid-Career Plan
are forfeited by a participant who prior to attaining age 65 terminates
employment with the Company without its consent, except in the case of a change
in control. Participants in the Supplemental Plan and the Mid-Career Plan
receive their benefits in a lump-sum payment at retirement (which payment may be
deferred) unless they elect, in accordance with the terms of the plan, to
receive an annuity benefit.

EMPLOYMENT AGREEMENTS

The Company has employment agreements which provide for severance payments in
certain events to Messrs. Osborne, McAllister, Morano, Muth and Kinsolving and
six other key executive officers. The employment agreements are for a term of
one year, renewable automatically on a year-to-year basis unless terminated by
the Company at least nine months prior to the anniversary date, except that they
continue in effect for not less than three years following occurrence of a
change in control of the Company. If, as a result of a change in control, the
executive's employment is terminated, his responsibilities are materially
reduced, or his salary, bonus or benefits are adversely affected, the executive
is entitled to receive from the Company as severance pay one lump-sum payment
equal to the total of three times such executive's annual base salary, average
incentive compensation payments received for the higher of the three or five
years immediately preceding the date of termination or the change in control,
and the annual cost to the Company of certain benefits such executive is
entitled to receive immediately preceding the date of termination. The executive
would also be entitled to continuation of health and other insurance benefits
for a period of three years following termination. Upon termination by the
Company after a change in control, under the agreements each executive is also
entitled to payment from the Company of the value of such executive's stock
options. The amount of the severance payment from the Company will also include
an amount necessary to reimburse each executive for any excise taxes imposed by
the Code in respect of such payments. In addition, the Supplemental Plan and the
Mid-Career Plan provide for lump-sum payment of accrued benefits upon a change
in control. The employment agreements also provide that following the occurrence
of a potential change in control of the Company each executive officer will
remain in the employ of the Company for 180 days. Under the agreements, change
in



                                      19
<PAGE>

control as to an executive shall not be deemed to have occurred if the event
first giving rise to the change in control involves a publicly-announced
transaction or publicly-announced proposed transaction which at the time of the
announcement has not been previously approved by the Company's Board of
Directors and the executive is part of a purchasing group proposing the
transaction. Also, there is deemed to be no change in control as to an executive
if the executive is part of a purchasing group which consummates a change in
control transaction. No change in control shall occur under the agreements in a
merger or consolidation approved by the stockholders in which the voting
securities of the Company continue to represent 50% or more of the voting power
of the Company or surviving entity, or in a merger or consolidation in which no
person or entity acquires more than 50% of the voting securities of the Company.

In November 1998 the Company entered into a one-year consulting agreement with
Mr. Richard de J. Osborne to take effect upon his retirement as Chief Executive
Officer in April 1999.  See "Committee Report on Executive Compensation" above
in this proxy statement.




                                      20

<PAGE>

                                                                    EXHIBIT 99.2
                  INTERESTS OF CERTAIN PERSONS IN THE MERGER

     The executive officers of ASARCO and Cyprus Amax and the members of the
ASARCO and Cyprus Amax boards of directors have interests in the business
combination that are different from, or in addition to, the interests of
stockholders generally. Several executive officers of ASARCO and Cyprus Amax,
including some officers who are also directors, have employment or severance
agreements and are or may become entitled to specific benefits under employee
benefit plans as a result of the business combination. Each of the employee-
directors of ASARCO and Cyprus Amax may be entitled to receive compensation if
the business combination is completed. The ASARCO and Cyprus Amax boards of
directors were aware of and discussed these potentially conflicting interests
when they approved the business combination.

ASARCO Employment Agreements

     ASARCO has entered into change of control employment agreements with nine
of its executive officers, including Messrs. McAllister, Morano, Dowd,
Kinsolving and Paul, which provide for severance payments following termination
of their employment with ASARCO. The employment agreements are for a term of one
year, renewable automatically on a year-to-year basis unless terminated by
ASARCO at least nine months prior to the anniversary date. The employment
agreements continue in effect for not less than three years following occurrence
of a change of control of ASARCO. The ASARCO merger will constitute a change of
control for purposes of the ASARCO employment agreements.

     If, as a result of a change in control, the executive's employment is
involuntarily terminated within three years of the change of control, the
executive is entitled to receive from ASARCO as severance pay a lump-sum payment
equal to the total of three times such executive's:

     .    annual base salary,

     .    average incentive compensation payments received for the highest of
          either the three-year or five-year period immediately preceding the
          date of termination or the change of control, and

     .    the annual cost to ASARCO of certain benefits such executive is
          entitled to receive immediately preceding the date of termination.

     Involuntary termination following a change of control includes instances
where:

     .    the executive's responsibilities or status are materially diminished
          without his consent,
     .    the executive's annual base salary is reduced or not increased by a
          minimum percentage following a change of control, or the executive is
          not paid an annual bonus in accordance with bonus policies in effect
          prior to the change of control,
     .    ASARCO (or a successor) fails to continue any incentive, bonus,
          compensation, pension or other employee benefit plan prior to or
          following the change of control,
     .    ASARCO's principal executive offices are relocated outside the Borough
          of Manhattan,
     .    the executive's vacation days are reduced,
     .    ASARCO (or a successor) fails to pay the executive's compensation or
          deferred compensation, or
     .    the successor corporation does not assume and agree to perform the
          employment agreement.

     The executive would also be entitled to continuation of health and other
insurance benefits for a period of three years following termination.  Upon such
a termination after a change of control, each executive is also entitled to
payment from ASARCO of the value of the executive's stock options.  The amount
of the severance payment from ASARCO will also include any amount necessary to
make whole the executive with respect to any excise taxes imposed by section
4999 of the Internal Revenue Code in respect of the payments described above.

     The amounts Messrs. McAllister, Morano, Dowd, Kinsolving and Paul would
receive (exclusive of amounts payable under ASARCO's non-qualified supplemental
retirement benefit plans which are separately

                                      62
<PAGE>

described below) if their employment were involuntarily terminated immediately
following approval of the ASARCO merger proposal by ASARCO stockholders
including the estimated payment for excise taxes imposed by section 4999 of the
Internal Revenue Code are $4.99 million; $2.54 million; $1.32 million; $2.08
million; and $1.28 million, respectively.  The aggregate amount the four other
executive officers with change of control employment agreements would receive if
their employment were involuntarily terminated immediately following approval of
the ASARCO merger proposal by ASARCO stockholders is $4.95 million.  As provided
for in the merger agreement, Mr. McAllister will serve as President and Co-Chief
Executive Officer of Asarco Cyprus and Mr. Morano will serve as Executive Vice
President and Chief Financial Officer of Asarco Cyprus following the mergers.

ASARCO Stock Based Plans

     When ASARCO stockholders approve the ASARCO merger proposal, all
outstanding options awarded prior to the announcement of the proposed ASARCO
merger will become fully vested and exercisable.  Any option that is not
exercised before the date the ASARCO merger becomes effective will be converted
into an immediately exercisable option to purchase the number of shares of
Asarco Cyprus common stock equal to the number of shares of ASARCO common stock
which could have been obtained upon the exercise of the option immediately prior
to the time the ASARCO merger becomes effective.

     The estimated number of ASARCO shares underlying unvested options that will
become exercisable by Messrs. McAllister, Morano and Dowd as a result of the
approval of the ASARCO merger proposal by ASARCO stockholders is 22,000; 3,000;
and 11,000, respectively.  Messrs. Kinsolving and Paul do not hold any unvested
options.  The estimated aggregate number of ASARCO shares underlying unvested
options that will become exercisable by all other executive officers as a result
of the approval of the ASARCO merger proposal by ASARCO stockholders is 7,800.

     In addition, upon stockholder approval of the ASARCO merger proposal, all
outstanding awards of restricted stock will become fully vested.  The number of
ASARCO shares awarded as restricted stock to Messrs. McAllister, Morano, Dowd,
Kinsolving and Paul that will vest as a result of stockholder approval of the
ASARCO merger proposal is 31,820; 17,520; 6,440; 8,340; and 5,460, respectively,
and 19,270 for all other executive officers.

Other ASARCO Plans

     ASARCO Supplemental Retirement Benefit Plan

     The supplemental retirement benefit plan is a non-qualified supplemental
retirement benefit plan under which any benefits not payable under ASARCO's tax
qualified pension plans because of limitations imposed by the Internal Revenue
Code, or due to the deferrals of salaries made under ASARCO's deferred income
benefit system and the compensation deferral plan are paid from ASARCO's general
corporate funds.  The supplemental retirement benefit plan provides that the
participants, including the executives named above, will receive a lump sum
payment of their accrued benefits under the plan, discounted for present value,
when a change of control occurs.  The business combination will constitute a
change of control for the purposes of the supplemental retirement benefit plan.
Unless participants waive their rights to immediate payment under the plan, they
will receive their benefits in a lump sum payment immediately following
stockholder approval of the ASARCO merger.

     ASARCO Supplemental Pension Plan for Designated Officers Hired in Mid-
Career

     The supplemental pension plan for designated officers hired in mid-career
provides supplemental retirement benefits for officers holding the rank of vice
president or higher who are determined by the compensation committee of ASARCO
to have

     .    prior business or professional experience valuable to ASARCO and
          relevant to the positions for which they were employed by ASARCO, and

                                      63

<PAGE>

     .    who at retirement or termination of employment with the consent of
          ASARCO will have been an employee of ASARCO as a vice president or
          higher for 10 years or more.

     The supplemental pension plan for designated officers hired in mid-career
provides for annual benefits equal to 55% of the executive's final average
compensation which is the average of the sixty highest monthly amounts of the
executive's compensation in the 120 months preceding his retirement or
termination.  This amount will be reduced by any benefits payable by ASARCO or
any other employer under any other pension plan not attributable to the
employee's contributions, and by all Social Security benefits payable at the
time of retirement or early termination.

     The supplemental pension plan for designated officers hired in mid-career
provides that the executives will receive a lump sum payment of their accrued
benefits under the plan, discounted for present value and early commencement of
benefits, when a change of control occurs.  The business combination will
constitute a change of control for purposes of the supplemental pension plan.
Unless participating executives waive their right to immediate payment under the
plan, they will receive their benefits in a lump sum payment immediately
following stockholder approval of the ASARCO merger.

     Deferred Compensation Plans

     The Deferred Fee Plan for Directors permits non-employee directors, and the
Compensation Deferral Plan permits eligible employees of ASARCO, to defer
payment of portions of their compensation until retirement or termination from
ASARCO.  ASARCO also maintains a Directors' Deferred Payment Plan for non-
employee directors which provides for deferred benefits payable following
termination of service.  Each of the plans provide that plan participants will
receive a lump sum payment of the value of their account upon a change of
control of ASARCO.  The approval of the ASARCO merger proposal by stockholders
of ASARCO will constitute such a change of control.  Unless participants waive
their rights to immediate payment under the plans, they will receive their
account balances under the plans in a lump sum payment immediately following
stockholder approval of the ASARCO merger.

                                      64


<PAGE>

Indemnification and Insurance

     The merger agreement requires Asarco Cyprus to provide officers and
directors of ASARCO and Cyprus Amax with liability insurance arrangements that
are at least comparable to those in effect at the time the merger agreement was
signed for a period of three years following the business combination. Asarco
Cyprus will not be required to expend in my one year more than 150% of the
annual premiums currently paid by ASARCO or Cyprus Amax, as the case may be. If
the annual premiums of such insurance coverage exceed the 150%, limit, Asarco
Cyprus only will be obligated to obtain a policy with the greatest coverage
available for a cost not exceeding the limit. Asarco Cyprus is entitled to meet
these obligations by covering the relevant persons under its own insurance
policies. The merger agreement also requires Asarco Cyprus to indemnify officers
and directors of ASARCO and Cyprus Amax to the fullest extent permitted by
applicable law, and to the same extent that they were indemnified while working
on behalf of Cyprus Amax or ASARCO, for a period of six years following the
business combination. See "The Merger Agreement--Indemnification, Directors' and
Officers' Insurance."

                                      66
<PAGE>

Stock Options and Other Stock-Based Awards

     At the time the mergers become effective, each outstanding option and
related stock appreciation right (SAR), if any, will be converted into an option
(together with an SAR, if applicable) to acquire:

     .  in the case of an option to purchase ASARCO common stock, the number of
        shares of Asarco Cyprus common stock equal to the number of shares of
        ASARCO common stock which could have been obtained upon the exercise of
        the option immediately prior to the time the mergers become effective,
        and

     .  in the case of an option to purchase Cyprus Amax common stock, the
        number of shares of Asarco Cyprus common stock equal to the number of
        shares of Cyprus Amax common stock which could have been obtained upon
        the exercise of the option immediately prior to the time the mergers
        become effective multiplied by 0.765.

     In the case of an option to purchase ASARCO common stock, the exercise
price per share of Asarco Cyprus common stock will not be adjusted at the time
the mergers become effective.  In the case of an option to purchase Cyprus Amax
common stock, the exercise price per share of Asarco Cyprus common stock will be
adjusted to equal the exercise price for such option as in effect immediately
prior to the time the mergers


                                       72
<PAGE>

become effective divided by 0.765.  Asarco Cyprus will assume the obligations of
Cyprus Amax and ASARCO with respect to such options.  Asarco Cyprus will assume
the obligations of ASARCO and Cyprus Amax under their respective option plans
and, except as described above, the terms of such options (and SARs) shall
continue to apply in accordance with the terms of the plans and agreements under
which they were issued, including any provisions for acceleration.

     Following the completion of the business combination, Asarco Cyprus will
reserve for issuance and delivery a sufficient number of shares of Asarco Cyprus
common stock upon the exercise of any ASARCO stock options or Cyprus Amax stock
options.

     Simultaneously with each of the mergers, each outstanding award (including
restricted stock, performance units, share units and performance shares) under
any employee incentive or benefit plan or arrangement and non-employee director
plan presently maintained by either of us will be converted into a similar
instrument of Asarco Cyprus, with appropriate adjustments to preserve the
inherent value of the awards with no detrimental effects on the holders.  The
other terms of each award will continue to apply, including any provisions
providing for acceleration.  With respect to any restricted stock awards as to
which the restrictions will have lapsed on or prior to the time the mergers
become effective, shares of such previously restricted stock will be converted
in accordance with the conversion provisions applicable to other shares of
common stock.

Benefits Matters

     It is the intention of the parties that for a period of one year following
the completion of the business combination, Asarco Cyprus will maintain the
employee benefit plans of ASARCO and Cyprus Amax generally in accordance with
their terms in effect at the completion of the business combination.  In
addition, following the completion of the business combination, Asarco Cyprus
will guarantee the performance of certain existing employment agreements and
benefit plans of each of ASARCO and Cyprus Amax.

Asarco Cyprus has also agreed that it will

     .  waive any limitations regarding pre-existing conditions and eligibility
        waiting periods under any welfare or employee benefit plan maintained by
        ASARCO or Cyprus Amax following the completion of the business
        combination;

     .  provide employees of ASARCO and Cyprus Amax with credit for any co-
        payments and deductibles paid in the calendar year prior to the
        completion of the business combination; and

     .  generally, treat all service by employees of ASARCO and Cyprus Amax
        prior to the completion of the business combination its service with
        Asarco Cyprus under all compensation and benefit plans and policies of
        ASARCO and Cyprus Amax.
<PAGE>

Indemnification; Directors' and Officers' Insurance

     Asarco Cyprus has agreed that all exculpation and indemnification
provisions now existing in favor of the current or former directors or officers
of each of Cyprus Amax or ASARCO as provided in their respective charter or by-
laws or in ,my agreement will survive the business combination.  Asarco Cyprus
has agreed that, for six years from the time the business combination becomes
effective, it will indemnify such indemnified parties to the same extent as they
were entitled while working on behalf of either Cyprus Amax or ASARCO.

     Asarco Cyprus has also agreed that, for three years from the time the
business combination becomes effective, it will maintain in effect ASARCO's and
Cyprus Amax's current directors' and officers' liability insurance policies for
those persons who are currently covered by the policies.  However, Asarco Cyprus
will not be required to expend in any one year more than 150% of the annual
premiums currently paid by ASARCO or Cyprus Amax, as the case may be.  If the
annual premiums of such insurance coverage exceed the 150% limit, Asarco Cyprus
only will be obligated to obtain a policy with the greatest coverage available
for a cost not exceeding the limit.  Asarco Cyprus is entitled to meet its
obligations under this paragraph by covering the relevant persons under its own
insurance policies.

                                       73
<PAGE>

          DIRECTORS AND MANAGEMENT FOLLOWING THE BUSINESS COMBINATION

Directors

     The merger agreement provides that, immediately following the completion of
the business combination, the Asarco Cyprus Board of Directors will have 16
members divided into three classes with each class serving a staggered three
year term (other than two of the initial three classes which will serve one and
two years, respectively).  Two classes of directors will consist of five
directors each and one class of directors will consist of six directors.  Eight
members will be designated by ASARCO and eight members will be designated by
Cyprus Amax.  ASARCO and Cyprus Amax will select their designees from the
current members of the board of directors of ASARCO and Cyprus Amax,
respectively.  If an individual selected consents to serve as a director of
Asarco Cyprus, he or she will be elected as a director of Asarco Cyprus.

     Messrs. Ward, McAllister, Clevenger and Morano will serve as directors of
Asarco Cyprus, and Mr. Ward will serve as Chairman of the Board.  ASARCO and
Cyprus Amax have not yet selected the other directors who will serve on the
Asarco Cyprus Board.

Committees of the Board of Directors

     Under the Asarco Cyprus by-laws, membership on each of the committees of
the Asarco Cyprus board initially will consist of an equal number of the
directors designated by ASARCO and Cyprus Amax.  Committee structure and
membership will be determined by the Asarco Cyprus Board of Directors at or
shortly after the completion of the business combination.

Compensation of Directors

     Directors who are employees of Asarco Cyprus will not receive any
compensation for service on the Asarco Cyprus board.  The specific terms of the
compensation to be paid to non-employee directors of Asarco Cyprus have not yet
been determined.

Management

     The merger agreement provides that from the time the mergers become
effective, Mr. Ward, Chairman, President and Chief Executive Officer of Cyprus
Amax, and Mr. McAllister, President and Chief Executive Officer of ASARCO, will
share responsibility for the management of Asarco Cyprus, as Chairman of the
Board and Co-Chief Executive Officer, and President and Co-Chief Executive
Officer, respectively.  At the next annual meeting of Asarco Cyprus expected to
be held in April 2000, Mr. McAllister will become the sole Chief Executive
Officer and President of Asarco Cyprus.  Following the first annual meeting of
Asarco Cyprus expected to be held in April 2000, and until December 31, 2000,
Mr. Ward will continue to participate actively in managing the consolidation of
the operations of ASARCO and Cyprus, realizing the synergies expected to be
derived from the mergers and exploring growth opportunities for Asarco Cyprus.
Mr. McAllister wilt become Chairman, President and Chief Executive Officer of
Asarco Cyprus following Mr. Ward's retirement on December 31, 2000.  In
addition, Mr. Clevenger will be Executive Vice President and Chief Operating
Officer of Asarco Cyprus, and Mr. Morano will be
<PAGE>

Executive Vice President and Chief Financial Officer of Asarco Cyprus, following
the completion of the mergers.  Both Messrs. Clevenger and Morano will also be
directors of Asarco Cyprus.  The remaining key executive officers of Asarco
Cyprus will be jointly designated by Messrs. McAllister and Ward, with the
advice and consent of the Asarco Cyprus Board of Directors.  Any changes to the
above arrangements between the effective time of the mergers and the annual
meeting of Asarco Cyprus stockholders in 2002 will require the affirmative vote
of 75% of the Asarco Cyprus Board of Directors.


                                       79

<PAGE>

                                                                    EXHIBIT 99.3

Interests of Certain Persons in the Merger

     As stated in the joint August 25, 1999 press release, Asarco Cyprus will
not enter into change of control agreements that may become operative during the
90 days following completion of the business combination.  The rights and
benefits under the existing arrangements with the employees (including the
executive officers, as described in the joint proxy statement and prospectus in
"Interests of Certain Persons in the Merger") of each of Cyprus Amax and ASARCO,
however, will remain in full force and effect and will be unaffected during the
90 days following completion of the business combination, as will any rights
under arrangements entered into with such employees in substitution for any
existing arrangements.

                                       13

<PAGE>

                                                                    EXHIBIT 99.4
                              [ASARCO Letterhead]


                                                              September 9, 1999

Dear Fellow Stockholders:

  As you may be aware, Phelps Dodge Corporation has commenced an unsolicited
exchange offer for the Company's common stock.

  After careful consideration, your Board of Directors has unanimously
rejected Phelps Dodge's offer as inadequate and not in the best interests of
the Company and its stockholders. Accordingly, the Board unanimously
recommends that you reject the offer and not tender your shares to Phelps
Dodge. Your Board of Directors has unanimously reaffirmed its determination
that the terms of the business combination with Cyprus Amax are fair to, and
in the best interests of, ASARCO and its stockholders.

  In arriving at its determination and recommendation, the Board gave careful
consideration to a number of factors which are described on pages 15 through
16 in the enclosed Schedule 14D-9, including the opinion of Credit Suisse
First Boston Corporation, the Company's financial advisor, that, as of the
date of such opinion and based upon and subject to the matters set forth
therein, the exchange ratio of 0.4098 of a share of Phelps Dodge common stock
for each outstanding share of ASARCO common stock provided for in the Phelps
Dodge exchange offer was inadequate from a financial point of view to the
holders of ASARCO common stock.

  Additional information with respect to the Board's decision and its actions
is contained in the enclosed Schedule 14D-9, and we urge you to consider this
information carefully.

  Your Board of Directors and I greatly appreciate your continued support and
encouragement.

                                            Sincerely,

                                            /s/ Francis R. McAllister

                                            Francis R. McAllister
                                            Chairman of the Board and
                                            Chief Executive Officer

<PAGE>

                                                                    EXHIBIT 99.5

            [LETTERHEAD OF CREDIT SUISSE FIRST BOSTON CORPORATION]

September 8, 1999

Board of Directors
ASARCO Incorporated
180 Maiden Lane
New York, New York 10038

Members of the Board:

You have asked us to advise you with respect to the adequacy to the holders of
the common stock of ASARCO Incorporated ("ASARCO"), other than Phelps Dodge
Corporation ("Phelps Dodge") and its affiliates, from a financial point of view
of the Exchange Ratio (defined below) set forth in the Prospectus, dated
September 2, 1999, of Phelps Dodge and related Letter of Transmittal
(collectively, the "ASARCO Exchange Offer/Prospectus") relating to the proposed
exchange offer by AAV Corporation, a wholly owned subsidiary of Phelps Dodge
("AAV"), for all of the outstanding shares of the common stock, no par value
(the "ASARCO Common Stock"), including the associated preferred share purchase
rights, of ASARCO (the "ASARCO Exchange Offer").  Pursuant to, and subject to
the terms and conditions of the ASARCO Exchange Offer, each outstanding share of
ASARCO Common Stock would be exchanged for 0.4098 (the "Exchange Ratio") of a
share of the common stock, par value $6.25 per share, of Phelps Dodge (the
"Phelps Dodge Common Stock").  As more fully set forth in a separate Prospectus,
dated September 2, 1999, of Phelps Dodge and related Letter of Transmittal
(collectively, the "Cyprus Exchange Offer/Prospectus" and, together with the
ASARCO Exchange Offer/Prospectus, the "Exchange Offer/Prospectuses"), CAV
Corporation, a wholly owned subsidiary of Phelps Dodge ("CAV"), also has
commenced an exchange offer for all of the outstanding shares of the common
stock, no par value (the "Cyprus Common Stock"), including the associated
preferred share purchase rights, of Cyprus Amax Minerals Company ("Cyprus")
pursuant to which each outstanding share of Cyprus Common Stock would be
exchanged for 0.3135 of a share of Phelps Dodge Common Stock (the "Cyprus
Exchange Offer" and, together with the ASARCO Exchange Offer, the "Exchange
Offers").

In arriving at our opinion, we have reviewed and considered the Agreement and
Plan of Merger, dated as of July 15, 1999, by and among ASARCO Cyprus
Incorporated ("ACI"), ACO Acquisition Corp., CAM Acquisition Corp., ASARCO and
Cyprus, the Joint Proxy Statement and Prospectus, dated August 20, 1999, of
ASARCO and Cyprus, the Exchange Offer/Prospectuses, the Tender Offer Statement
on Schedule 14D-1 of Phelps Dodge and AAV, dated September 3, 1999, with respect
to the ASARCO Exchange Offer, the Tender Offer Statement on Schedule 14D-1 of
Phelps Dodge and CAV, dated September 3, 1999, with respect to the Cyprus
Exchange Offer, and a draft, dated September 8, 1999, of the
Solicitation/Recommendation Statement on Schedule 14D-9 of ASARCO (the "ASARCO
Schedule 14D-9") with respect to the ASARCO Exchange Offer. We have also
reviewed certain publicly available business and financial information relating
to ASARCO, Cyprus and Phelps Dodge, and certain other information relating to
ASARCO and Cyprus, including financial forecasts, provided to or discussed with
us by ASARCO and Cyprus, and have met with the managements of ASARCO and Cyprus
to discuss the businesses and prospects of ASARCO and Cyprus. We have also
considered certain financial and stock market data of ASARCO, Cyprus and Phelps
Dodge, and we have compared those data with similar data for other publicly held
companies in businesses similar to ASARCO, Cyprus and Phelps Dodge, and we have
considered, to the extent publicly available, the financial terms of certain
other business combinations and other transactions which have recently been
effected. We also considered such other information, financial studies, analyses
and investigations and financial, economic and market criteria which we deemed
relevant.

In connection with our review, we have not assumed any responsibility for
independent verification of any of the foregoing information and we have relied
on its being complete and accurate in all material respects.  With respect to
the financial forecasts provided to or discussed with us by the managements of
ASARCO and Cyprus, you have informed us, and we have assumed, that such
forecasts have been reasonably prepared on bases reflecting the best currently
available estimates and judgments of the managements of ASARCO and Cyprus as to
the future financial performance of ASARCO and Cyprus and the strategic benefits
and potential synergies (including the amount, timing and achievability thereof)
anticipated to result from the proposed merger
<PAGE>

Board of Directors
ASARCO Incorporated
September 8, 1999
Page 2


transaction involving ASARCO and Cyprus (the "Merger") and the best currently
available estimates and judgments of the management of ASARCO as to the
strategic benefits and potential synergies (including the amount, timing and
achievability thereof) anticipated to result from the transactions contemplated
by the ASARCO Exchange Offer or the Exchange Offers, as the case may be. We also
have assumed, with your consent, that both the ASARCO Exchange Offer and the
Merger would be treated as tax-free transactions for federal income tax
purposes. We have not been requested to make, and have not made, an independent
evaluation or appraisal of the assets or liabilities (contingent or otherwise)
of ASARCO, Cyprus or Phelps Dodge, nor have we been furnished with any such
evaluations or appraisals. As you are aware, we have not had access to non-
public information regarding Phelps Dodge, nor have we had an opportunity to
conduct customary due diligence with respect to business, financial or other
information relating to Phelps Dodge. Our opinion is necessarily based upon
information available to us, and financial, economic, market and other
conditions as they exist and can be evaluated, on the date hereof. We are not
expressing any opinion as to what the value of the Phelps Dodge Common Stock or
the common stock of ACI (the "ACI Common Stock") actually would be if and when
issued pursuant to the proposed ASARCO Exchange Offer or the Merger, as the case
may be, or the prices at which the Phelps Dodge Common Stock or the ACI Common
Stock would trade or otherwise be transferable subsequent to the proposed ASARCO
Exchange Offer or the Merger, as the case may be.

We are acting as financial advisor to ASARCO in connection with the proposed
Merger and the ASARCO Exchange Offer and will receive a fee for such services.
We have in the past provided financial services to ASARCO and Cyprus unrelated
to the proposed Merger and the ASARCO Exchange Offer, for which services we have
received compensation.  In the ordinary course of business, Credit Suisse First
Boston and its affiliates may actively trade the debt and equity securities of
ASARCO, Phelps Dodge and Cyprus for their own accounts and for the accounts of
customers and, accordingly, may at any time hold long or short positions in such
securities.

It is understood that this letter is for the information of the Board of
Directors of ASARCO in connection with its consideration of the proposed ASARCO
Exchange Offer, does not constitute a recommendation to any stockholder as to
whether or not such stockholder should exchange shares of ASARCO Common Stock
pursuant to the ASARCO Exchange Offer or how such stockholder should vote with
respect to any matters relating to the ASARCO Exchange Offer or the Merger, and
is not to be quoted or referred to, in whole or in part, in any registration
statement, prospectus or proxy statement, or in any other document used in
connection with the offering or sale of securities, nor shall this letter be
used for any other purposes, without our prior written consent, except that this
letter may be attached in its entirety as an exhibit to the ASARCO Schedule
14D-9 relating to the ASARCO Exchange Offer.

Based upon and subject to the foregoing, it is our opinion that, as of the date
hereof, the Exchange Ratio is inadequate, from a financial point of view, to the
holders of ASARCO Common Stock (other than Phelps Dodge and its affiliates).

Very truly yours,

CREDIT SUISSE FIRST BOSTON CORPORATION

<PAGE>

                                                                    EXHIBIT 99.6

LOWENSTEIN SANDLER, PC
65 Livingston Avenue
Roseland, New Jersey 07068
(973) 597-2500 (tel)
(973) 597-2400 (fax)
Attorneys for Plaintiffs
Phelps Dodge Corporation
and AAV Corporation

<TABLE>
<S>                                          <C>
                                           |
PHELPS DODGE CORPORATION                   | SUPERIOR COURT OF NEW
a New York Corporation and                 | JERSEY
AAV Corporation, a Delaware                | CHANCERY DIVISION: MERCER
corporation                                | COUNTY
                                           |
Plaintiffs,                                | DOCKET NO.
                                           |
v.                                         |
                                           |
ASARCO INCORPORATED, a New                 | VERIFIED COMPLAINT FOR
Jersey corporation, Francis R. McAllister, | DECLARATORY AND INJUNCTIVE
Richard de J. Osborne, Vincent A. Calarco, | RELIEF
John D. Ong, Kevin R. Morano, Michael T.   |
Nelligan, Manuel T. Pacheco, James Wood,   |
James C. Cotting, David C. Garfield, E.    |
Gordon Gee, James Kinnear and              |
CYPRUS AMAX MINERALS                       |
COMPANY, a Delaware corporation,           |
                                           |
Defendants.                                |
___________________________________________|
</TABLE>

          Plaintiffs Phelps Dodge Corporation and AAV Corporation (collectively,
"Phelps Dodge"), by and through their undersigned attorneys, upon knowledge as
to themselves and their own acts and upon information and belief as to all other
matters, allege as follows:
<PAGE>

                              NATURE OF THE ACTION
                              --------------------


     1.   On July 15, 1999, ASARCO Incorporated ("ASARCO") and Cyprus Amax
Minerals Company ("Cyprus Amax") announced a non-premium proposed merger (the
"ASARCO Cyprus Merger").  Their merger agreement (the "Merger Agreement") --
which was not publicly disclosed until August 20, more than a month after the
announcement -- is illegal.  It purports to prohibit directors of a New Jersey
corporation from receiving, gathering, providing or exchanging information
concerning any merger or acquisition proposal by Phelps Dodge (or any other
           ---
interested party) until the stockholders of both companies vote on the ASARCO
Cyprus Merger.  It cannot be terminated to pursue a clearly superior
transaction, such as the three-way combination proposed by Phelps Dodge.  It
imposes draconian financial penalties -- in excess of 6% of the market
capitalization of ASARCO -- if the deal is not consummated according to
management's plan.  In short, this Merger Agreement is dead on arrival, a fact
that likely explains why the companies secreted it so long.

     2.   The Merger Agreement's "No Solicitation" provisions -- in reality,
"no-see, no-hear, no-talk" provisions -- are particularly outrageous.  The
directors of ASARCO and Cyprus Amax have contracted away their duty of care;
they are not permitted ever to learn about, let alone evaluate meaningfully, any
alternative proposal -- no matter how compelling, financially rewarding and
industrially sound.  And, while the Merger Agreement makes the gracious
concession of supposedly permitting the directors to change or withdraw their

                                       2
<PAGE>

recommendation of the ASARCO Cypress Merger, it renders that right meaningless.
A director cannot make an informed decision about the merits of a proposed
           ------
transaction -- or, equally important, the relative merits of two strategic
alternatives -- without the ability to communicate freely with interested
parties.  This Court has never sanctioned what this Merger Agreement purports to
do:  require directors to keep their eyes wide shut.
     -------

     3.   Apparently not content to hide behind the Merger Agreement's lock-up
provisions, ASARCO and Cyprus Amax have engaged in a persistent pattern of
conduct that reeks of entrenchment and undue defensiveness.  Among other things
they have:

               .  attempted to rig the proxy process -- Blasius Indus., Inc. v.
                                                        -----------------------
               Atlas Corp., 564 A.2d 651 (Del. Ch. 1988), be damned -- by
               -----------
               setting meeting and record dates designed to favor unfairly man
               agement's preferred transaction;

               .  opposed Phelps Dodge's lawful requests for stockholder list
               information to allow Phelps Dodge to communicate directly -- and
               on a level playing field -- with the companies' owners;

               .  granted senior management compensation and benefits packages
               that not only lavishly "reward" entrenchment, but unfairly
               shift value from stockholders to management;

                                       3
<PAGE>

               .  included in the Merger Agreement Provisions that virtually
               guarantee the jobs of senior management through 2002; and

               .  stood -- and hid -- behind the Merger Agreement's unlawful
               restrictions, refusing to meet, discuss or exchange information
               with Phelps Dodge concerning its proposal.

This is not the conduct of responsible boards of directors.

     4.   ASARCO's directors have abdicated their responsibilities.  Their
actions to date should be enjoined, and they should be required to act in
accordance with law going forward.

                                  THE PARTIES
                                  -----------

     5.   Plaintiff Phelps Dodge is a New York corporation with its principal
executive offices in Phoenix, Arizona.  Phelps Dodge is one of the world's
leading producers of copper and has achieved its premier status through safe,
efficient and environmentally sound production of low-cost, high-quality metals
and minerals.  Phelps Dodge beneficially owns common stock of both ASARCO and
Cyprus Amax.

     6.   Plaintiff AAV Corporation is a Delaware corporation directly owned by
Phelps Dodge.  AAV Corporation owns 100 shares of common stock of ASARCO.

     7.   Defendant ASARCO is a New Jersey corporation with its principal place
of business in New York, New York.  ASARCO is a leading producer of copper,
specialty

                                       4
<PAGE>

chemicals and aggregates. ASARCO's copper business includes integrated mining,
smelting and refining operations in North America and Peru.

     8.   Defendant Francis R. McAllister ("McAllister") has been Chairman and
Chief Executive Officer of Defendant ASARCO since 1992.  He is a director of
ASARCO and owes fiduciary duties to ASARCO and its shareholders.

     9.   Defendants Richard de J. Osborne, Vincent A. Calarco, John D. Ong,
Kevin R. Morano, Michael T. Nelligan, Manuel T. Pacheco, James Wood, James C.
Cotting, David C. Garfield, E. Gordon Gee and James Kinnear (the "Director Defen
dants") are current directors of ASARCO and all owe fiduciary duties to ASARCO
and its shareholders.

     10.  Defendant Cyprus Amax is a Delaware corporation with its principal
place of business in Englewood, Colorado.  Cyprus Amax is a diversified mining
company engaged in the exploration for and extraction, processing and marketing
of mineral resources including, copper, molybdenum, coal and gold.

     11.  Phelps Dodge has commenced a parallel action alleging, inter alia,
                                                                 ----- ----
breaches of fiduciary duty against Cyprus Amax, its President, Chairman and
Chief Executive Officer, Milton H. Ward ("Ward") and its directors in the Court
of Chancery of the State of Delaware.

                                       5
<PAGE>

                               FACTUAL BACKGROUND
                               ------------------

I.   The Proposed Merger of ASARCO and Cyprus Amax
     ---------------------------------------------

     12.  On July 15, 1999, ASARCO and Cyprus Amax announced a so-called
"merger of equals" under which ASARCO shareholders are to receive one share of
stock in the merged company and Cyprus Amax shareholders are to receive 0.765
shares per share of Cyprus Amax stock they currently hold.  The proposed new
company, ASARCO Cyprus Incorporated ("ASARCO Cyprus"), would have its corporate
headquarters in New York City and its operations headquarters in Tempe, Arizona.
ASARCO shareholders would receive no premium by way of the transaction.

     13.  ASARCO Cyprus would have a sixteen person board of directors with
eight members nominated by ASARCO and eight by Cyprus Amax.  Ward, Cyprus Amax's
Chairman, President and Chief Executive Officer, and McAllister, ASARCO's
Chairman and Chief Executive Officer, would serve as Co-Chief Executive Officers
and directors of ASARCO Cyprus.

     14.  The market reaction to the proposed no-premium merger was hardly
inspired, pushing both companies' stock prices down.  On July 14, 1999, the
common stock of Cyprus Amax and ASARCO was trading at highs of 14-1/2 and 19-
1/2, respectively.  On July 19, 1999, the common stock of Cyprus Amax and
ASARCO was trading at highs of 14 and 19-1/6, respectively.  Although the ASARCO
Cyprus Merger initially included projected cash

                                       6
<PAGE>

synergies of $100 million per year, plus reduced depreciation of $50 million
annually due to the write-down of certain assets (this estimate was later
increased to $200 million), the market has not recognized any incremental value
in the current share prices of either company. The proposed merger has also been
criticized for its lack of a plan to integrate operations, and its lack of asset
rationalization.

     15.  The details of the Merger Agreement were not finally disclosed to the
public until August 20, 1999, over a month after the merger was announced and
only after ASARCO and Cyprus Amax publicized that they were rejecting a three-
way merger proposed by Phelps Dodge.  By hiding the self-serving restrictive
provisions of their Merger Agreement from public view, the directors of ASARCO
and Cyprus Amax have attempted to shield their true objective of entrenching
their positions even at the expense of a better proposal for their shareholders.

II.  The CEOs of ASARCO and Cyprus Amax Refuse to Talk with Phelps Dodge
     -------------------------------------------------------------------

     16.  The three-way merger proposal offered by Phelps Dodge was made on
August 10, 1999, when Douglas Yearley, CEO of Phelps Dodge ("Yearley"),
telephoned Cyprus Amax's Ward and ASARCO's McAllister, who were meeting together
in New York.

     17.  This proposal was immediately -- and summarily -- rejected.  At
approximately 6:45 that evening, a few hours after the proposal was made,
McAllister and Ward forwarded a short letter to Yearley which stated simply that
pursuant to the terms of the Merger

                                       7
<PAGE>

Agreement, Ward and McAllister felt they "were not at liberty to have a
discussion of the nature you were suggesting today." A copy of the Merger
Agreement was not provided to Phelps Dodge, and thus it was unclear at that
stage why the CEOs of ASARCO and Cyprus Amax would not even entertain
discussions with Phelps Dodge.

     18.  On August 11, 1999, Yearley and Phelps Dodge President, J. Steven
Whisler, again requested a meeting with Cyprus Amax and ASARCO, in a letter to
Ward and McAllister laying out the basic terms of the proposed merger.  The
letter explained "that a three-way combination . . . would create superior
shareholder value for the shareholders of ASARCO and Cyprus Amax."  Under the
proposed merger, "all the outstanding common stock of both ASARCO and Cyprus
Amax [would] be exchanged for Phelps Dodge common stock" and "[t]he transaction
would be tax free" to ASARCO and Cyprus Amax shareholders.

     19.  Specifically, the August 11 letter stated that Phelps Dodge was
prepared to offer shareholders of ASARCO and Cyprus Amax an exchange ratio of
0.3756 Phelps Dodge common shares for each ASARCO common share, and 0.2874
Phelps Dodge common shares for each Cyprus Amax common share.  These exchange
ratios represented a premium of approximately 25%, based on the then-market
prices for ASARCO and Cyprus Amax shares.  Because the benefits to the
shareholders of ASARCO and Cyprus Amax of a three-way merger with Phelps Dodge
are significantly greater than the currently proposed ASARCO Cyprus Merger,
Phelps Dodge once again urged McAllister and Ward to consider the

                                       8
<PAGE>

proposal. The CEOs of ASARCO and Cyprus Amax did not wait long, however, before
refusing to consider the proposed three-way merger.

     20.  On the morning of August 12, 1999, Yearley received a telephone call
from McAllister and Ward again refusing to discuss Phelps Dodge's proposal.
Once again, the CEOs of ASARCO and Cyprus Amax did not explain what prevented
them from even talking to Phelps Dodge.

     21.  Ward and McAllister's stubborn refusals to communicate with Phelps
Dodge demonstrated that there would be no serious consideration of a three-way
merger of Phelps Dodge, Cyprus Amax and ASARCO.  Their conduct strongly suggests
their true motive is to entrench and perpetuate their current positions and
lucrative compensation packages through the creation of ASARCO Cyprus, while
abandoning their duties to act in the best interests of their companies and
shareholders by exploring a merger with Phelps Dodge.  In short, the CEOs of
ASARCO and Cyprus Amax are depriving the stockholders of their companies of
the opportunity to consider a premium proposal from which the shareholders stand
to benefit significantly.

III. The Superiority of the Phelps Dodge Proposal
     --------------------------------------------

     22.  An analysis of the three-way merger proposed by Phelps Dodge demon
strates compelling benefits to all three companies.  These include:

                                       9
<PAGE>

                    .  a significant premium, of approximately 30% as of the
                       August 20, 1999 proposal date, and a quadrupling of divi
                       dends to shareholders;

                    .  the increased ability of the combined company to
                       integrate southwest U.S. mining operations,
                       administrative functions in Chile and Peru and worldwide
                       exploration and development activities;

                    .  the increased financial strength of the combined company
                       and its ability to create a world-class portfolio of
                       cost-competitive mining assets;

                    .  a formidable management team, at both the operating and
                       corporate levels, with solid credibility in the
                       marketplace;

                    .  the capacity to eliminate substantial overhead,
                       exploration, purchasing and other expenses through
                       consolidation;

                    .  tremendous operating leverage, together with sufficient
                       diversity in other businesses to mitigate cyclical
                       downturns;

                    .  the ability of the combined company to reduce capital
                       expenditures;

                                       10
<PAGE>

                    .  a strong liquid balance sheet, with excellent access to
                       capital; and

                    .  the combination of all of these factors, creating greater
                       shareholder value on an ongoing basis for the
                       shareholders of all three companies.

     23.  In addition the three-way transaction proposed by Phelps Dodge would
bring significant benefits to shareholders of all three corporations.
Specifically, a three-way merger would lead to cost savings well in excess of
the amounts that could be achieved through the pending ASARCO Cyprus Merger.
Phelps Dodge estimates that the annual cash cost savings would be at least $200
million, with additional non-cash savings of approximately $65 million per year
from lower depreciation charges.

     24.  Over the past few years, Phelps Dodge stock has significantly outper
formed the stock of both ASARCO and Cyprus Amax.  Furthermore, Phelps Dodge
stock has yielded a total return of 161% over the past ten years, compared to
total returns of negative 20% for ASARCO stock and negative 26% for Cyprus Amax
stock.

     25.  Moreover, the benefits of the Phelps Dodge proposal remain superior to
the terms of the ASARCO Cyprus Merger regardless of whether both or only one of
ASARCO or Cyprus Amax accept the proposal.  For shareholders of ASARCO, a
significant premium is still

                                       11
<PAGE>

better than the no-premium ASARCO Cyprus Amax alternative. The consummation of
the ASARCO Cyprus Merger, however, would prelude this possibility.

     26.  The metals and mining industry is undergoing a phase of rapid
consolidation.  In view of this dynamic environment and the numerous compelling
benefits to ASARCO, Cyprus Amax and Phelps Dodge, a summary rejection of the
Phelps Dodge proposal is as incomprehensible as it is unjustifiable.

IV.  The Board of Directors' Public Rejection of the Phelps Dodge
     -------------------------------------------------------------------
     Proposal
     --------

     27.  In the face of the adamant refusal by the CEOs of both ASARCO and
Cyprus Amax to give any consideration to Phelps Dodge's proposal, Phelps Dodge
sent letters on August 12, 1999 to the boards of directors of both companies,
outlining the proposed three-way transaction and the ensuing benefits to all
three companies and their shareholders. In these letters, Phelps Dodge also
indicated that its proposal with respect to ASARCO was not contingent on Cyprus
Amax's acceptance of the proposal and vice versa.

     28.  On August 20, 1999, Cyprus Amax and ASARCO publicly rejected Phelps
Dodge's "unsolicited proposal."  In a joint news release (the "August 20 News
Release"), Cyprus Amax and ASARCO stated that each of their respective boards
had met separately to consider the proposal, and determined that "pursuing the
ASARCO Cyprus Merger was in [the] best interests of ASARCO and Cyprus Amax
stockholders, respectively . . . ." Cyprus

                                       12
<PAGE>

Amax and ASARCO's joint news release stated only that "Phelps Dodge's proposal
is subject to a number of contingencies."

     29.  The boards of Cyprus Amax and ASARCO refrained from stating the basis
for their decision to reject the Phelps Dodge proposal and did not identify the
"contingencies" they were referring in the August 20 News Release.  Most
certainly, they made no effort to discuss and negotiate any such
"contingencies."  Consequently, Defendants unjustifiably continue to deprive
ASARCO stockholders of the opportunity to decide for themselves which
transaction is in fact in their best interests.

     30.  That same day, following ASARCO and Cyprus Amax's public rejection of
the Phelps Dodge proposal, Phelps Dodge outlined a revised proposal even more
beneficial to the shareholders of ASARCO and Cyprus Amax.  Each share of ASARCO
common stock would be converted into 0.4098 Phelps Dodge common shares,
representing a significant premium of approximately 30% to ASARCO
shareholders, based upon share prices of ASARCO and Phelps Dodge before trading
was halted that morning. Each share of Cyprus Amax common stock would be
converted into 0.3135 Phelps Dodge common shares, representing an approximate
29% premium for Cyprus Amax shareholders, based upon share prices of Cyprus Amax
and Phelps Dodge before trading was halted that morning.

                                       13
<PAGE>

     31.  The market and financial community responded overwhelmingly favorably
to the Phelps Dodge proposal, and the shares of all three companies rose during
trading on August 20.

     32.  On August 24, 1999, The Wall Street Journal reported that Cyprus Amax
shareholders were eager to embrace a deal with Phelps Dodge.  One money manager
with a big stake in Cyprus Amax commented: "[l]ong term, ASARCO Cyprus is a good
combination, but a combination of Phelps, ASARCO and Cyprus is a great
combination."

     33.  Even Cyprus Amax commented to Bloomberg News that it was prepared to
convene a board meeting to study the increased offer.  Gerald Malys, Chief
Financial Officer of Cyprus Amax, informed Bloomberg that Cyprus Amax and ASARCO
had rejected the initial offer because it did not offer enough of a premium.  He
added that Cyprus Amax and ASARCO need to begin conversations about the Phelps
Dodge proposal, stating:  "I don't think there is any choice in this game but to
listen to what goes on.  We need to look at it, they (ASARCO) need to look at
it, we need to talk to each other."  Yet the Merger Agreement and the continued
resistance of McAllister, Ward and the boards of directors of ASARCO and Cyprus
Amax remain roadblocks to any such discussions -- and thus the proper discharge
of the boards' fiduciary duties.

V.   The Unreasonable Terms of the ASARCO Cyprus Merger Agreement
     ------------------------------------------------------------

                                       14
<PAGE>

     34.  Until August 20, 1999, the provisions of the Merger Agreement
between ASARCO and Cyprus Amax were hidden from their respective shareholders
and the public.  On that day, ASARCO and Cyprus Amax filed an S-4 Registration
Statement, attaching the Merger Agreement.  The Merger Agreement contains a
number of noteworthy "no-see, no-hear, no-talk" provisions that reflect patent
violations of the fiduciary duties owed by the boards of ASARCO and Cyprus Amax.
These provisions are transparent efforts to protect a non-premium deal and to
entrench management at the expense of shareholders.

     35.  Sections 5.10(a)(i) and 5.11(a)(i) of the Merger Agreement restrain
both parties, their directors, officers, employees and representatives from
directly or indirectly soliciting, initiating or encouraging (whether by
furnishing information or otherwise), or taking any other action designed to
facilitate any inquiries or the making of any proposal which constitutes or
reasonably could be expected to lead to any "Takeover Proposal."  A Takeover
Proposal is defined as an inquiry, proposal or offer, or any improvement,
restatement, amendment, renewal or reiteration of any such inquiry, proposal or
offer, from any person relating to any direct or indirect acquisition of a
business or equity securities of a party or any of its subsidiaries.

     36.  More egregiously, Sections 5.10(a)(ii) and 5.11(a)(ii) restrain both
parties, their directors, officers, employees, and representatives from
"participat[ing] in any discussions or negotiations regarding any [alternative]
Takeover Proposal." Thus, the Merger

                                       15
<PAGE>

Agreement purports to restrain the ASARCO board from discussing an unsolicited
bid that is demonstrably superior to the ASARCO Cyprus Merger.

     37.  Sections 5.10(b) and 5.11(b) further prohibit the boards of directors
of either company from withdrawing or modifying their approval or recommendation
of the ASARCO Cyprus Merger or the Merger Agreement.  The boards may withdraw
their recommendation to approve the merger only if they determine in good
faith, based on the advice of outside counsel, that a failure to do so would
constitute a breach of fiduciary duties owed by the respective boards to their
shareholders.

     38.  The sole power that the boards of ASARCO and Cyprus Amax have if they
determine that the ASARCO Cyprus Merger is not in fact in the best interests of
their shareholders is to recommend that the shareholders vote against approving
the merger.  The boards of directors of ASARCO and Cyprus Amax do not have the
power to terminate the Merger Agreement, nor may they stop the vote from
occurring.

     39.  Section 7.1(e) of the Merger Agreement permits ASARCO to terminate the
Merger Agreement if Cyprus Amax breaches Section 5.10 of the Merger Agreement,
and Section 7.1(f) entitles Cyprus Amax to terminate the Merger Agreement if
ASARCO is in breach of Section 5.11.  Under Sections 7.3(a)(ii) and (b)(ii), if
one party is entitled to terminate the Merger Agreement due to the other party's
breach of its obligation not to consider or negotiate other proposals, the party
who may terminate the Merger Agreement is entitled to

                                       16
<PAGE>

$45 million (the "Termination Fee"). This is a grossly excessive termination fee
and, in the case of ASARCO, would amount to 6% of its equity value.

     40.  Under Sections 7.3(a)(i) and (b)(i) of the Merger Agreement, Cyprus
Amax or ASARCO could be subjected to this severe Termination Fee simply because,
in light of another Takeover Proposal, its shareholders voted against the
merger.  The only way in which the Termination Fee would not apply is if the
other party's shareholders also voted against the transaction, or if a
transaction pursuant to another Takeover Proposal was not consummated within 18
months.

     41.  As a consequence of these provisions, the boards of ASARCO and Cyprus
Amax are not allowed to consider superior offers or proposals and are thereby
restrained from acting in the best interests of their shareholders.  In
addition, the substantial Termination Fee acts as a great disincentive for
ASARCO and Cyprus Amax to negotiate with anyone but each other -- and for
shareholders to vote down the ASARCO Cyprus Amax Merger Agreement.  Although the
Merger Agreement contains a provision which would allow the boards of directors
to withdraw their recommendations in order to fulfill their fiduciary duties, it
is impossible to see how this would occur if the directors have been effectively
precluded from obtaining information about and considering in an informed way
any other offers or proposals.

     42.  In other words, the boards of ASARCO and Cyprus Amax have tied their
hands by agreeing not to solicit, encourage, or facilitate inquiries by
furnishing information, and

                                       17
<PAGE>

not to participate in discussion with respect to any other proposals. It would
be difficult, if not impossible, for them to make any meaningful analysis of
another pro posal, such as Phelps Dodge's, let alone to make any recommendation
to the shareholders of ASARCO other than to vote in favor of the ASARCO Cyprus
Merger. The restrictions contained in the Merger Agreement render it impossible
for the boards of ASARCO and Cyprus Amax to make an informed decision as to
whether the ASARCO Cyprus Merger is, or is not, in the best interests of their
shareholders. McAllister and the Director Defendants of ASARCO should not be
allowed to hide behind unreasonable provisions in the Merger Agreement as
justification for their refusal to allow their shareholders to consider a far
superior proposal.

     43.  Moreover, there is a great financial incentive for the boards to push
ahead with their merger even at the expense of foregoing a better offer for
their shareholders. The ASARCO Cyprus Form S-4 Registration Statement discloses
that "[e]ach of the employee-directors of ASARCO and Cyprus Amax may be entitled
to receive compensation if the business combination is completed."  Even if
certain directors or senior officers are no longer employed by the merged
company, the Merger Agreement ensures that they are entitled to large severance
payments.  In other words, directors and certain senior officers of ASARCO and
Cyprus Amax are rewarded whether they continue to be employed by ASARCO Cyprus
or not.  The key, however, is that the Merger Agreement be protected.  If the
Merger

                                       18
<PAGE>

Agreement were to be terminated, the Director Defendants would be entitled
neither to continued employment by ASARCO Cyprus, nor to the large severance
payments.

     44.  Finally, Section 3.2 of the Merger Agreement further demonstrates the
degree to which the directors of ASARCO and Cyprus Amax have sought to entrench
their positions.  It states that any change to the "key executive officers" of
ASARCO Cyprus prior to the stockholder meeting in the year 2002 requires the
affirmative vote of at least three-quarters of the directors constituting the
entire board of directors of ASARCO Cyprus.  What this means is that any change
in management effectively requires a unanimous vote of the twelve non-management
directors.

VI.  ASARCO and Cyprus Amax Seek To Manipulate the Merger Vote
     ---------------------------------------------------------

     45.  The August 20 News Release stated that proxy materials relating to
the ASARCO Cyprus Merger would be mailed to shareholders of record on August 25,
1999, and that shareholder meetings have been set for September 30, 1999.  This
timetable in fact contravenes New York Stock Exchange Rules and was designed to
further the interests of the directors over the shareholders.

     46.  Section 4 of the New York Stock Exchange Rules regulates shareholder
meetings and proxies.  Section 401.02 explicitly provides that "[a] minimum of
ten days' notice is required prior to the record date . . . established . . .
for determination of shareholders entitled to vote at the meeting."  ASARCO and
Cyprus Amax gave only seven

                                       19
<PAGE>

days' notice to the NYSE of the August 25, 1999 record date, and did not make
the record date public until August 20, 1999.

     47.  Although the NYSE has opted not to take action against the companies
for their failure to observe this rule, expediting the record date nonetheless
demonstrates the haste with which ASARCO and Cyprus Amax are proceeding in order
to have their merger approved by shareholders of both companies.

     48.  This abbreviated schedule is no accident.  Ward, McAllister and the
boards of their companies seek to prevent more recent shareholders, who would be
aware of and therefore more likely to be in favor of the Phelps Dodge proposal,
from being able to vote on the ASARCO Cyprus Merger.  Defendants seek to preempt
the normal flow of trading and movement in the market of each company's shares
in order to ensure that the shareholders of record entitled to vote upon the
ASARCO Cyprus Merger are those who would be more likely to vote in favor of it.

     49.  In addition, Phelps Dodge has sought shareholder lists and related
materials from Cyprus Amax and ASARCO.  As of the date of the filing of this com
plaint, Cyprus Amax has not responded to a letter requesting the materials dated
August 23, 1999.  ASARCO outright opposed an application Phelps Dodge made to a
New Jersey court seeking the information.  On August 26, 1999, the court ruled
that documents and records must be turned over to Phelps Dodge within
forty-eight hours of the filing of its preliminary proxy materials. In light of
the schedule ASARCO and Cyprus Amax have set for their

                                       20
<PAGE>

shareholder meetings, the delay and refusal to turn over shareholder lists is
further evidence of entrenchment.

VII  ASARCO and Cyprus Amax Issue an Ultimatum to Phelps Dodge
     ---------------------------------------------------------

     50.  Instead of agreeing to engage in real discussions with Phelps Dodge,
late in the afternoon of August 25, 1999, ASARCO and Cyprus Amax issued a joint
ultimatum to Phelps Dodge in the form of a news release (the "August 25 News
Release") and a letter from McAllister and Ward to Yearley.  Although the August
25 News Release characterized the letter as a "willingness to negotiate," the
terms demanded by the CEOs of ASARCO and Cyprus Amax are so unreasonable that
their negotiating posture is illusory and their entrenchment motive all the more
apparent.

     51.  The conditions, which no company would accept under similar circum
stances, include a requirement that the exchange ratio be increased to 0.4055
shares of Phelps Dodge common stock for each Cyprus Amax share, and 0.5300
Phelps Dodge shares for each ASARCO common share.  This demand amounts to a
premium of 70% to 80% of the companies' stock prices after the announcement of
                                                     -----
their no-premium merger but before the first public disclosure of Phelps Dodge's
                            ------
initial proposal.  ASARCO and Cyprus Amax may be feeling pressure from their
shareholders to negotiate with Phelps Dodge, but making unreasonable and
unacceptable demands is nothing more than a ploy to deflect shareholder
attention while pursuing the ASARCO Cyprus Merger.

                                       21
<PAGE>

     52.  These outrageous demands amount to an unreasonable ultimatum to Phelps
Dodge and make other supposed examples of their willingness to negotiate all the
more illusory.   The August 25 News Release reports that during the first ninety
days after completion of the ASARCO Cyprus Merger, Ward and McAllister will
offer their shareholders the right to call a meeting to consider a "bona fide"
proposal.  During this time period, ASARCO and Cyprus Amax will allow for a
redemption  of their shareholder rights plan and a waiver of any change of
control provisions in employment contracts.  In light of ASARCO's and Cyprus
Amax's conduct to date - and the delay and burden associated with such a special
meeting - such "promises" ring hollow.  And the companies' statements regarding
employments are so cryptic - and even contradictory - as to be indecipherable.

     53.  Indeed, the August 25 News Release also announced an equally illusory
attempt at resuscitating shareholder interest in the ASARCO Cyprus Merger
itself. ASARCO and Cyprus Amax now say that they will improve the terms of their
deal by including a "special payment" of $5.00 per share to the shareholders of
the merged entity, to be paid as soon as possible after the consummation of the
merger.  This "special payment" does not alter the fundamental economics of the
ASARCO Cyprus Merger, nor does it offer the stockholders of ASARCO and Cyprus
Amax greater value than Phelps Dodge's premium proposal.

                                       22
<PAGE>

     54.  Nothing in the August 25 News Release or the letter detracts from one
fundamental fact:  ASARCO and Cyprus Amax have not changed the unreasonable
terms of their Merger Agreement preventing serious consideration of the Phelps
Dodge proposal.  If there were any doubt, ASARCO and Cyprus Amax "emphasized" in
the August 25 News Release that they were sticking to their schedule of
shareholder meet  ings for September 30, 1999 to vote on their merger.  In their
letter to Yearley, Ward and McAllister made clear that "apart from this
communication, neither party has waived any of its legal or other rights, or
rights or obligations under our merger agreement."  In other words, the "no-see,
no-hear, no-talk" and other illegal provisions of the Merger Agreement remain
intact.

     55.  The August 25 letter shows that Ward and McAllister have put their
interests before the interests of the ASARCO and Cyprus Amax shareholders.  The
letter states:  "[w]e  strongly believe that the combination of Cyprus Amax and
ASARCO, without the effect of combining further with Phelps Dodge, provides
greater value to Cyprus Amax and ASARCO holders than your August 20 proposal."
In other words, Ward and McAllister believe that no premium is better than the
significant premium offered by Phelps Dodge.  Although that may be true for Ward
and McAllister, it cannot be true for the shareholders of their companies.

                                       23
<PAGE>

     56.  On August 25, 1999 Phelps Dodge issued a news release confirming that
it had received ASARCO and Cyprus Amax's letter, but that the letter was not
accompanied by any offer to negotiate, talk or exchange information.

     57.  On August 27, 1999, Phelps Dodge filed a Form S-4 Registration State
ment with respect to its proposal, and announced its intention to offer to
exchange shares of Phelps Dodge common stock for ASARCO and Cyprus Amax shares
(the "Exchange Offer").  However, the Exchange Offer cannot be consummated
unless, among other things, the Director Defendants amend the onerous terms of
the shareholder rights agreement (the "Rights Agreement" or the "Poison Pill")
or redeem the rights provided therein.

VII. ASARCO'S Failure to Redeem or Amend its Shareholder Rights Agreement
     --------------------------------------------------------------------

     58.  In July 1989, ASARCO adopted a shareholder rights agreement (the
"Rights Plan" or "Poison Pill"), which was amended on September 24, 1992.  Under
the Rights Plan, ASARCO's board has authorized and delivered a dividend of one
preferred share purchase right (a "Right") for each share of common stock of the
company outstanding on August 7, 1989.  Each Right represents the right to
purchase a unit consisting of 1/100 of a share (a "Unit") of Junior Preferred
Stock at a price of $90 per Unit.

     59.  Distribution of the Rights is triggered by the earliest of the
following events:  (i) the tenth day after the first public announcement by
ASARCO or an Acquiring Person (defined as any person who is the beneficial
owner of 15% or more of the common stock

                                       24
<PAGE>

then outstanding) that an Acquiring Person has become such; or (ii) the close
business on the tenth business day (or such later date as the Board shall
determine) after the date that a tender or exchange offer by any Person, other
than an associated person, is commenced within the meaning of Rule 14d-2(a) of
the General Rules and Regulations under the Exchange Act, if upon consummation
thereof, such person would be the beneficial owner of 15% or more of the shares
of common stock then outstanding.

     60.  The Rights Plan contains a "flip-in" prevision.  Under this provision,
if any person becomes an Acquiring Person other than pursuant to an offer for
all outstanding shares of common stock which the independent directors
determine to be fair to and otherwise in the best interests of the company and
its stockholders, or as a result of the repurchase of common stock by the
company, each holder of a Right will be able to purchase shares under
preferential terms.  Specifically, he or she will have the right to receive
common stock having a value equal to two times the exercise price of the Right.
This flip-in provision dilutes the Acquiring Person's holdings and increases the
number of shares that the Acquiring Person would have to purchase in order to
consummate a merger.

     61.  The Rights Plan also contains a "flip-over" provision, which arises
if, following the time a person becomes an Acquiring Person, ASARCO is acquired
in a merger or other business transaction in which it is not the surviving
company or 50% or more of ASARCO's assets or earning power is sold or
transferred to any other person. The "flip-over" provision entitles each Right
holder to receive, upon exercise, common

                                       25
<PAGE>

stock of the acquiring company having a value equal to two times the exercise
price of the Right.

     62.  In January 1998 the board of ASARCO approved the extension of the 1989
Rights Plan by adopting the 1998 Rights Plan, which is substantially similar to
the 1989 Rights Plan. Each of the new Rights entitle the registered holder to
purchase from the Company a share of its Junior Preferred Stock, at a price of
$90.00 per 1/110th of a share. The new rights are redeemable under certain
circumstances at $0.01 per Right and will expire, unless redeemed earlier, on
January 31, 2008.

     63.  Due to the prohibitive costs this Poison Pill imposes on an Acquiring
Person, no tender offer or exchange offer that would trigger the Rights can
practically be consummated unless ASARCO's board redeems the Rights or amends
the Poison Pill. ASARCO's board can redeem the Rights at a redemption price of
$0.01 per Right.  In addition, ASARCO's board can amend the Rights Plan, as it
did on July 15, 1999 to accommodate the ASARCO Cyprus Merger.  Accordingly,
simply by refusing to redeem the Rights or to amend the Rights Plan, ASARCO's
board can block offers regardless of the interests of ASARCO's shareholders.
The triggering of the Poison Pill would be particularly unjustified given the
premium price and fair structure proposed by Phelps Dodge.

     64.  Although confronted by the premium offered by the Phelps Dodge
proposal, ASARCO's board has not redeemed the Rights.  Thus, it is clear that
the Poison

                                       26
<PAGE>

Pill serves only one purpose: entrenchment of the Director Defendants for their
own personal gain and at the expense of their duty to act in the best interests
of ASARCO's shareholders. A failure by ASARCO and the Director Defendants to
redeem the Rights or to amend the Rights Plan would be a breach of the Director
Defendants' fiduciary duties, because such failure will effectively hinder the
shareholders of ASARCO from exercising their fundamental rights to determine the
future of the company they own and will preclude them from the benefit of a
superior transaction.

                               DECLARATORY RELIEF
                               ------------------

     65.  ASARCO and Cyprus Amax's immediate public rejection of Phelps Dodge's
attempts to negotiate a business combination and their failure to take necessary
steps to place the matter before the shareholders of both companies indicate
that there is a substantial controversy between the parties.  The adverse legal
interests of the parties are real and immediate.

     66.  The granting of the requested declaratory relief will serve the public
interest by affording relief from uncertainty and by avoiding delay as well as
conserving judicial resources by avoiding piecemeal litigation.

                               IRREPARABLE INJURY
                               ------------------

                                       27
<PAGE>

     67.  Defendants' unwillingness to consider Phelps Dodge's proposed three-
way transaction will prevent Phelps Dodge's proposal from being placed before
the shareholders of both companies for their consideration.  Should this
occur, the shareholders of ASARCO and Cyprus Amax, including Phelps Dodge, will
be deprived of the unique opportunity to decide which merger proposal is more
beneficial to them.

     68.  The terms of the Merger Agreement, by prohibiting the boards of ASARCO
and Cyprus Amax from considering and negotiating alternative proposals,
effectively prevent the boards from complying with their fiduciary duties to act
in the best interests of their companies.

     69.  In addition Phelps Dodge, as a potential  party to a three-way
transaction, will be deprived of the unique opportunity to enter into a business
combination that would provide it with substantial benefits, including increased
efficiency and international competitiveness.

     70.  The resulting injury to Phelps Dodge will not be compensable in money
damages and Plaintiffs, as well as other ASARCO and Cyprus Amax shareholders,
have no adequate remedy at law.

                                   COUNT ONE
                                   ---------

                      Breach of Duty of Care by Defendants
                      ------------------------------------

     71.  Plaintiffs repeat and reallege each and every allegation set forth in
paragraphs 1 through 70 as if fully set forth herein.

                                       28
<PAGE>

     72.  The Director Defendants owe a duty of care to plaintiffs.  This duty
requires that they make good faith efforts to be informed and to exercise
appropriate judgment.  Failure of a board of directors to inform itself fully of
all reasonably available material information, including alternatives, before
arriving at a decision constitutes a breach of this duty.

     73.  The Director Defendants, in agreeing to and continuing to abide by
terms in the Merger Agreement that prevent them from fulfilling their fiduciary
duties, have breached their duty of care.  By prohibiting themselves from
obtaining information or considering other potentially superior offers
Defendants have precluded the possibility of making an informed recommendation
to shareholders of ASARCO and Cyprus Amax. Even though they claim that they are
willing to negotiate with Phelps Dodge, the unreasonable conditions in their
August 25 letter render any such willingness completely illusory.  In addition,
ASARCO and Cyprus Amax have reaffirmed the onerous provisions of their Merger
Agreement.

     74.  Plaintiffs seek:  (i) a declaration that McAllister and the Director
Defendants breached their duty to exercise due care in failing to make
reasonable efforts to obtain information about the Phelps Dodge proposal; (ii) a
declaration that McAllister and the Director Defendants breached their duty of
care in determining that the ASARCO Cyprus Merger was in the best interests of
their shareholders, without a reconfirmation of the fairness opinion of their
financial advisors; (iii) an injunction compelling McAllister and the

                                       29
<PAGE>

Director Defendants to inform themselves adequately and to consider the Phelps
Dodge proposal; (iv) an injunction compelling McAllister and the Director
Defendants to submit the Phelps Dodge Proposal to the shareholders of ASARCO and
(v) an injunction preventing Defendants from taking any further steps to proceed
with the proposed ASARCO Cyprus Merger.

                                   COUNT TWO
                                   ---------

      Breach of Fiduciary Duties by McAllister and the Director Defendants
      --------------------------------------------------------------------

     75.  Plaintiffs repeat and reallege each and every allegation set forth in
paragraphs 1 through 74 as if fully set forth herein.

     76.  McAllister and the Director Defendants stand in a fiduciary
relationship with ASARCO shareholders, including Phelps Dodge.  As fiduciaries,
they owe the highest duties of care, loyalty and good faith.

     77.  The proposal for a three-way merger is non-coercive,
nondiscriminatory, and poses no threat to ASARCO's corporate policies and
effectiveness.  Phelps Dodge's proposal represents a substantial premium over
the current market price of ASARCO's stock and the value of the Cyprus Amax non-
premium alternative.

     78.  The failure of McAllister and the Director Defendants to determine
that the proposed three-way merger is in the best interests of ASARCO and its
shareholders - or even to consider the question seriously - constitutes a
violation of the fiduciary duties owed by them.

                                       30
<PAGE>

     79.  The failure of McAllister and the Director Defendants even to assess
whether the proposed three-way merger is in the best interests of ASARCO and its
shareholders is a violation of the fiduciary duties owed by them.

     80.  Plaintiffs seek:  (i) a declaration that the failure of McAllister and
the Director Defendants to consider the Phelps Dodge proposal and to determine
that the proposed three-way merger is in the best interests of ASARCO's
shareholders is a breach of fiduciary duty; (ii) an injunction compelling
McAllister and the Director Defendants to consider the Phelps Dodge proposal;
(iii) an injunction compelling McAllister and the Director Defendants to submit
the Phelps Dodge proposal to the shareholders of ASARCO; and (iv) an injunction
preventing Defendants from taking any further steps to proceed with the proposed
ASARCO Cyprus Merger.

     81.  Plaintiffs have no adequate remedy at law.

                                  COUNT THREE
                                  -----------

                The $45 Million Termination Fee is Unenforceable
                ------------------------------------------------

     82.  Plaintiffs repeat and reallege each and every allegation set forth in
paragraphs 1 through 81 as if fully set forth herein.

     83.  McAllister and the Director Defendants stand in a fiduciary
relationship with ASARCO shareholders, including Phelps Dodge.  As fiduciaries,
they owe the highest duties of care, loyalty and good faith.

                                       31
<PAGE>

     84.  Director Defendants breached their fiduciary duties in agreeing to a
Termination Fee in the grossly excessive sum of $45 million, and in agreeing
that such Termination Fee would apply even if the shareholders of ASARCO voted
against the ASARCO Cyprus Merger.

     85.  Plaintiffs seek a declaration that agreeing to a Termination Fee of
$45 million is a breach of fiduciary duty.

     86.  Plaintiffs have no adequate remedy at law.

                                   COUNT FOUR
                                   ----------

                      The Coercive Vote Should be Enjoined
                      ------------------------------------

     87.  Plaintiffs repeat and reallege each and every allegation set forth in
paragraphs 1 through 86 as if fully set forth herein.

     88.  The scheduled September 30, 1999 vote by the ASARCO stockholders on
the ASARCO Cyprus Merger will be improperly and illegally coercive.
Stockholders will be wrongfully coerced into voting in favor of the merger
because, as Defendants have structured the Merger Agreement, ASARCO will have to
pay to Cyprus Amax a grossly excessive Termination Fee if the ASARCO
stockholders fail to approve the merger.  The vote of the ASARCO stockholders
will also be wrongfully coerced because they know that the ASARCO Cyprus Amax
transaction is the only business combination the Director Defendants will
approve and thus, due to the Director Defendants' breaches of fiduciary duties,
is the only transaction whereby ASARCO can be consolidated with another entity.

                                       32
<PAGE>

     89.  Plaintiffs seek an injunction enjoining the September 30, 1999 vote,
or, alternatively, enjoining Defendants from taking any actions to consummate
the ASARCO Cyprus Merger.

     90.  Plaintiffs have no adequate remedy at law.

                                   COUNT FIVE
                                   ----------

      Phelps Dodges' Proposal Must be Submitted to Shareholders of ASARCO
      -------------------------------------------------------------------

     91.  Plaintiffs repeat and reallege each and every allegation set forth in
paragraphs 1 through 90 as if fully set forth herein.

     92.  The proposal for a three-way merger is non-coercive,
nondiscriminatory, and poses no threat to ASARCO's corporate policies and
effectiveness, and represents a substantial premium over the current market
price of ASARCO's stock.

     93.  McAllister and the Director Defendants may not improperly prevent the
shareholders of ASARCO from considering the Phelps Dodge proposal.  Nor may they
improperly manipulate the voting process, as they already have attempted to do.
Any meeting of ASARCO's shareholders to vote upon the ASARCO Cyprus Merger must
include a consideration of the Phelps Dodge proposal, which is superior and more
beneficial to ASARCO's shareholders than the ASARCO-Cyprus Amax Merger
Agreement.  The failure of McAllister and the Director Defendants to put the
Phelps Dodge proposal before the shareholders of ASARCO is a breach of their
fiduciary duties.

                                       33
<PAGE>

     94.  Plaintiffs seek:  (i) a declaration that the failure of McAllister and
the Director Defendants to submit the Phelps Dodge proposal for consideration by
ASARCO's shareholders is a breach of fiduciary duty; (ii) an injunction
compelling McAllister and the Director Defendants to submit the Phelps Dodge
proposal to ASARCO's shareholders at any meeting of ASARCO's shareholders to
consider the ASARCO Cyprus Merger; and (iii) an injunction preventing McAllister
and the Director Defendants from taking any further steps to proceed with the
proposed ASARCO Cyprus Merger until ASARCO's shareholders have been given the
opportunity to consider the three-way transaction proposed by Phelps Dodge.

     95.  Plaintiffs have no adequate remedy at law.

                                   COUNT SIX
                                   ---------

                   Failure to Amend or Redeem the Poison Pill
                   ------------------------------------------

     96.  Phelps Dodge repeats and realleges each and every allegation set forth
in paragraphs 1 through 95 as if fully set forth herein.

     97.  The proposal for a three-way merger is non-coercive,
nondiscriminatory, and represents a substantial premium of the market price of
ASARCO and Cyprus Amax stock. The Phelps Dodge proposal poses no threat to
ASARCO's corporate policies and effectiveness, and represents a substantial
premium over the current market price of ASARCO's stock.


                                       34
<PAGE>

     98.  The failure of McAllister and the Director Defendants to redeem the
Rights or to amend the Rights Agreement, or to otherwise make it inapplicable to
the Phelps Dodge proposal, is a severe and inappropriate response to the
proposed three-way merger.  In addition, McAllister and the Director Defendants'
failure to redeem the Rights or to amend the Rights Agreement is a breach of the
fiduciary duties owed by them to ASARCO's shareholders.

     99.  The application of the Rights Agreement, or the adoption of any other
defensive measures, to impede or preclude the consideration and/or consummation
of the three-way merger proposed by Phelps Dodge is a violation of the fiduciary
duties owed by McAllister and the Director Defendants.   The Phelps Dodge
Exchange Offer is incapable of completion unless the Poison Pill is redeemed or
amended.

     100. Plaintiffs seek:  (i) a declaration that the failure of McAllister and
the Director Defendants to redeem the Rights or to amend the Rights Agreement to
make it inapplicable to the Phelps Dodge proposal is a breach of fiduciary duty;
(ii) an injunction compelling McAllister and the Director Defendants to redeem
the Rights or to otherwise amend the Rights Agreement to make it inapplicable
to the Phelps Dodge proposal; and (iii) an injunction enjoining McAllister and
the Director Defendants from applying the Rights Agreement or adopting any other
defensive measures aimed at impeding the three-way merger proposed by Phelps
Dodge.

     101. Plaintiffs have no adequate remedy at law.

                                       35
<PAGE>

                                  COUNT SEVEN
                                  -----------

           Cyprus Amax's Aiding and Abetting of Defendants' Breaches
           ---------------------------------------------------------

     102. Phelps Dodge repeats and realleges each and every allegation set forth
in paragraphs 1 through 101 as if fully set forth herein.

     103. Defendants have breached their fiduciary duties to ASARCO and to its
shareholders.

     104. Cyprus Amax has aided and abetted Defendants in the breach of their
fiduciary duties.  As a direct participant in the purported "merger of equals,"
Cyprus Amax knew of, and in fact actively encouraged and participated in, the
breach of fiduciary duties set forth herein.  ASARCO and Cyprus Amax have
entered into a Merger Agreement which prohibits the consideration of other, even
superior, alternatives and provides Cyprus Amax with an unjustifiably large
Termination Fee.  Cyprus Amax induced Defendants to breach their fiduciary
duties in order to obtain the substantial financial benefits that the ASARCO
Cyprus Merger would provide, at the expense of ASARCO's stockholders.

     105. Plaintiffs seek an injunction preventing Cyprus Amax, its employees,
agents and all persons acting on its behalf, from aiding and abetting McAllister
and
                                       36
<PAGE>

the Director Defendants' breach of fiduciary duties to ASARCO and its
shareholders, with respect to the ASARCO Cyprus Merger and the Phelps Dodge
proposal.

     106. Plaintiffs have no adequate remedy at law.

     WHEREFORE, Phelps Dodge respectfully requests that the Court enter an
order:

               .    declaring that (i) the failure to make good faith efforts
                    to obtain information about reasonable alternatives such as
                    the Phelps Dodge proposal in order to make an informed
                    decision about the ASARCO Cyprus Merger; and (ii) the
                    failure to obtain a reconfirmation of the fairness opinion
                    of their financial advisors is a breach of the Director
                    Defendants' duty of care which they owe to ASARCO and its
                    shareholders;

               .    declaring that the failure to (i) adequately consider
                    Phelps Dodge's offer; (ii) determine that the Phelps Dodge
                    proposal is in the best interest of ASARCO's shareholders;
                    (iii) submit Phelps Dodge's proposed three-way merger to the
                    shareholders of ASARCO; and (iv) render inapplicable the
                    Poison Pill by redeeming the Rights or amending the Rights
                    Agreement, constitute a

                                       37
<PAGE>

                    breach of McAllister and the Director Defendants' fiduciary
                    duties;

               .    compelling McAllister and the Director Defendants to render
                    inapplicable to the Phelps Dodge proposal the Poison Pill by
                    redeeming the Rights or amending the Rights Agreement;

               .    compelling Defendants to consider the Phelps Dodge proposal
                    and to take all steps necessary to provide Plaintiffs with a
                    fair and equal opportunity to enter into a transaction with
                    ASARCO and Cyprus Amax, including submitting the proposal
                    to ASARCO's shareholders;

               .    preliminarily and permanently enjoining Defendants from
                    taking any further steps to proceed with the proposed
                    ASARCO Cyprus Merger until the shareholders of ASARCO have
                    been given the opportunity to consider the three-way
                    transaction proposed by Phelps Dodge;

               .    preliminarily and permanently enjoining the adoption or
                    exercise of any measures by ASARCO or McAllister and the
                    Director Defendants which have the effect of

                                       38
<PAGE>

                    impeding, frustrating or interfering with the Phelps Dodge
                    proposal, including without limitation payment of the
                    Termination Fee;

               .    preliminarily and permanently enjoining ASARCO, its
                    employees, agents and all persons acting on its behalf, from
                    aiding and abetting McAllister and the Director Defendants'
                    breach of their fiduciary duties to ASARCO's stockholders;

               .    granting damages for all incidental injuries suffered as a
                    result of Defendants' unlawful conduct;

               .    awarding Phelps Dodge its costs and expenses in this
                    action, including reasonable attorneys' fees; and

               .    granting such other and further relief as the Court deems
                    just and proper.

Dated:  August 27, 1999

                              ___________________________
                                    Douglas S. Eakeley

                              LOWENSTEIN SANDLER PC
                              65 Livingston Avenue
                              Roseland, New Jersey  07068
                              Tel:   (973) 597-2500
                              Fax:  (973) 597-2400
                              Attorneys for Plaintiffs

                                       39
<PAGE>

Of Counsel:
Stuart J. Baskin
Alan S. Goudiss
SHEARMAN & STERLING
599 Lexington Avenue
New York, New York  10022
Tel:   (212) 848-4000
Fax:   (212) 848-7179

John Hall
DEBEVOISE & PLIMPTON
875 Third Avenue
New York, New York  10022
Tel:   (212) 909-6000
Fax:   (212) 909-6836

                                       40

<PAGE>

                                                                    EXHIBIT 99.7
LITE DePALMA GREENBERG & RIVAS, LLC
Bruce D. Greenberg, Esq.
Allya Z. Lite, Esq.
Two Gateway Center, 12th Floor
Newark, New Jersey 07102-5003
(973) 623-3000

WOLF POPPER LLP
Marian P. Rosner, Esq.
Paul O. Paradis, Esq.
845 Third Avenue
New York, New York 10022
(212) 759-4600

Attorneys for Plaintiff

- -------------------------------------  x
MAURICE A. STERNS,                     :  SUPERIOR COURT OF NEW JERSEY
                                       :  CHANCERY DIVISION:
                Plaintiff,             :  MERCER COUNTY
                                       :
   -against-                           :  Docket No.
                                       :
FRANCIS R. MCALLISTER, KEVIN  R.       :  Civil Action
MORANO, RICHARD DE J. OSBORNE,         :
DOUGLAS E. MCALLISTER, MICHAEL T.      :
NELLIGAN, MANUEL T. PACHECO, JAMES     :  CLASS ACTION COMPLAINT
WOOD, VINCENT A. CALARCO, JOHN D.      :
ONG, JAMES C. COTTING, DAVID C. GAR    :
FIELD, E. GORDON GEE, JAMES W.         :
KINNEAR, and ASARCO INCORPORATED,      :
                                       :
          Defendants.                  :
                                       :
- -------------------------------------  x
<PAGE>

     Plaintiff, Maurice A. Sterns, by his attorneys, alleges for his Complaint,
upon informa tion and belief, except for paragraph 2 hereof, which is alleged
upon personal knowledge, as follows:

                               SUMMARY OF ACTION
                               -----------------

     1.   Plaintiff brings this action on behalf of himself and all other public
shareholders of defendant Asarco Incorporated ("Asarco" or the "Company")
against Asarco and the directors of Asarco, for breaching their fiduciary duties
to Asarco's shareholders.  These defendants are causing the Company to summarily
reject an offer to Asarco shareholders (the "Offer") by Phelps Dodge Corporation
("Phelps Dodge") to purchase both Asarco and its previously announced planned
merger partner Cyprus Amax Minerals Co. ("Cyprus Amax") in a three way merger
for approximately $2.66 billion in Phelps Dodge common stock, despite the fact
that the Offer presents a substantial, approximately 30% premium over the
trading price of Asarco's (as well as Cyprus Amax's) public shares as of August
19, 1999, the date the Boards of Asarco and Cyprus Amax both rejected Phelps
Dodge's initial offer; and the Offer represents a potential economic
opportunity to Asarco's shareholders to realize the full value of their
investment in Asarco.  Defendants' summary rejection of the Offer has no
reasonable corporate purpose whatsoever and forecloses an opportunity for
shareholders to realize the full value of their Asarco shares that would
otherwise not be available to them.  Plaintiff seeks, inter alia, an order
                                                      ----- ----
enjoining defendants from summarily rejecting the Offer without giving it fair
consideration, becoming fully informed as to the fairness of the Offer, and
taking all steps

                                       2
<PAGE>

necessary to maximize shareholder value. Plaintiff further seeks an Order
compelling defendants to fully and fairly inform Asarco shareholders concerning
the Offer.

                                  THE PARTIES
                                  -----------

     2.   Plaintiff resides at 3601 Underwood Drive, Chevy Chase, Maryland.
Plaintiff owns shares of common stock of defendant Asarco and has been the owner
continuously of such shares since prior to the wrongs complained of herein.

     3.   Defendant Asarco is a corporation organized and existing under the
laws of the State of New Jersey, with its principal place of business located at
180 Maiden Lane, New York, New York 10038.  Asarco produces nonferrous metals,
principally copper, as well as lead, zinc and silver.  The Company also produces
specialty chemicals and aggregates. Asarco's copper business includes integrated
mining, smelting, and refining operations in North America and Peru.  Asarco's
competitors in the copper business include Cyprus Amax, and Phoenix, Arizona-
based Phelps Dodge, the nation's largest copper producer.

     4.   Cyprus Amax, a Delaware corporation, with principal executive offices
located in Englewood, Colorado, is a producer of copper, coal and molybdenum,
and explores for minerals worldwide.  Cyprus Amax also holders a 31% interest in
Kinross Gold Corporation, a Canadian company that acquires, develops and
operates precious and base metal properties, emphasizing gold and copper mining.

     5.   Defendant Francis R. McAllister ("F. McAllister") is the Chairman of
the Board of Directors, Chief Executive Officer, and a director of Asarco.

                                       3
<PAGE>

     6.   Defendant Kevin R. Morano ("Morano") is President, Chief Operating
Officer, and a director of Asarco.

     7.   Defendant Richard de J. Osborne ("Osborne") retired recently - on
April 28, 1999 - as Chairman and Chief Executive Officer of Asarco, and is
currently a director of the Company.

     8.   Defendant Douglas E. McAllister ("D. McAllister") is Vice President,
Government Affairs, and a director of Asarco.

     9.   Defendants Michael T. Nelligan ("Nelligan"), Manuel T. Pacheco
("Pacheco"), James Wood ("Wood"), Vincent A. Calarco ("Calarco"), John D. Ong
("Ong"), James C. Cotting ("Cotting"), David C. Garfield ("Garfield"), E. Gordon
Gee ("Gee"), and James W. Kinnear ("Kinnear"), are all directors of Asarco.

     10.  The above-named individual defendants (collectively, the "Individual
Defen dants"), as officers and/or directors of Asarco and/or as significant
shareholders of Asarco, owe fiduciary duties of good faith, loyalty, fair
dealing, due care, and candor to plaintiff and the other members of the Class
(as defined below).

     11.  Each of the Individual Defendants receives annual compensation from
Asarco and has a personal and financial interest in thwarting any threat to the
continued incumbency and control of Asarco's current management, in derogation
of their fiduciary duties.

     12.  Defendants' conduct, as more fully described herein, has been
orchestrated to protect the positions and corresponding perquisites and other
benefits received by the

                                       4
<PAGE>

Individual Defendants as officers and/or directors of Asarco, and the agreements
pertaining to same reached between Asarco and Cyprus Amax. Defendant are
breaching their fiduciary duties to plaintiff and the members of the Class (as
defined below) by summarily rejecting the Offer without adequate investigation,
market check, or any other procedures to determine whether the Offer presents an
opportunity to maximize the value of Asarco shares, thus wrongfully depriving
plaintiff and the members of the Class of the full value of their shares.
Moreover, because Asarco has already been "put in play" by virtue of its
previously an nounced intended merger with Cyprus Amax, defendants are obligated
to obtain maximum possible value for Asarco's public shareholders, which duty
they are breaching by virtue of the conduct described herein.

                            CLASS ACTION ALLEGATIONS
                            ------------------------

     13.  Plaintiff brings this action pursuant to Rule 4:32 of the New Jersey
Court Rules, on behalf of himself and all other stockholders of Asarco as of
August 24, 1999 (the "Class").  Excluded from the Class are defendants herein,
members of their immediate families, and any subsidiary, firm, trust,
corporation, or other entity related to or affiliated with any of the defendants
and their successors in interest, who are or will be threatened with injury
arising from defendants' actions.

     14.  This action is properly maintainable as a class action for the
following reasons:

          (a) The Class is so numerous that joinder of all members is
impracticable. While the exact number of class members is unknown to plaintiff
at this time and can be

                                       5
<PAGE>

ascertained only through appropriate discovery, there are more than 39 million
shares of Asarco common stock outstanding held by thousands of shareholders of
record. The holders of these are believed to be geographically dispersed
throughout the United States. Asarco's stock is listed and actively traded on
the New York Stock Exchange.

          (b) There are questions of law and fact that are common to members of
the Class and thus predominate over questions affecting only individual members.
The common questions include, inter alia, the following:
                              ----- ----
               (i)   whether defendants have engaged in conduct constituting
                     unfair dealing to the detriment of the Class;

               (ii)  whether defendants' summary rejection of the Offer is
                     grossly unfair to the Class;

               (iii) whether defendants are engaging in a plan or scheme to
                     thwart and/or summarily reject offers that may maximize the
                     value of shareholders' investment in Asarco, to the
                     detriment of the Class;

               (iv)  whether defendants are engaging in a plan or scheme to
                     entrench and/or enrich themselves (whether such plan or
                     scheme is de vised solely among themselves or pursuant to
                     agreement with Cyprus Amax) at the expense of the public
                     stockholders of

                                       6
<PAGE>

                     Asarco and/or unfairly to obtain for themselves the
                     benefits and business of the Company;

               (v)   whether plaintiff and the other members of the Class would
                     be irreparably damaged if defendants' summary rejection of
                     the Offer is not enjoined;

               (vi)  whether defendants have breached fiduciary and other common
                     law duties owed by them to the Class; and

               (vii) whether defendants have failed to take appropriate measures
                     to ensure the realization of the maximum value of the
                     Asarco stock held by the Class.

          (c) The claims of plaintiff are typical of the other members of the
Class and plaintiff has no interest that is adverse or antagonistic to the
interest of the Class.

          (d) Plaintiff is committed to prosecuting this action and has retained
counsel competent and experienced in litigation of this nature.  Plaintiff is an
adequate representative of the Class and will fairly and adequately protect the
interest of the Class.

          (e) Plaintiff anticipates that there will be no difficulty in the
management of this litigation.

          (f) A class action is superior to other available methods for
adjudication of this controversy.

                            SUBSTANTIVE ALLEGATIONS
                            -----------------------

                                       7
<PAGE>

A.   Announcement of the Asarco-Cyprus Amax Merger
     ---------------------------------------------

     15.  On July 15, 1999, Asarco and Cyprus Amax announced that they had
agreed to merge in a stock-for-stock transaction in which Cyprus Amax holders
will receive 0.765 of a share in the combined entity for each of their shares,
and will own 63.5% of the new company. Asarco shareholders will receive one
share of the new entity for each Asarco share they currently own.  The
transaction provided for essentially no premium for either company under then-
current market prices of their respective stocks.

B.   The Offer by Phelps Dodge
     -------------------------

     16.  On August 20, 1999, Asarco and Cyprus Amax issued a joint press
release in which they disclosed that "the Boards of both companies had received
an unsolicited proposal from Phelps Dodge Corporation to negotiate an agreement
for Phelps Dodge to acquire both companies for stock.  Phelps Dodge proposed an
exchange of .3756 of a Phelps Dodge share of each Asarco share and .2874 of a
Phelps Dodge share for each Cyprus share. . . ."  This offer valued Asarco and
Cyprus Amax at a total of approximately $2.39 billion, at the current stock
prices of each of the three companies.  The press release further stated that on
August 19, 1999, the Boards of both Asarco and Cyprus Amax had met separately to
consider this proposal and has determined to reject it, and instead to proceed
with the two-party merger between Asarco and Cyprus Amax, citing simply "the
best interests of Asarco and Cyprus Amax stockholders," without any further
elaboration.

                                       8
<PAGE>

     17.  On August 20, 1999, following the announcement of the rejection of its
initial offer, Phelps Dodge raised its bid for both companies.  In a letter to
the Boards of both Asarco and Cyprus Amax, made public by its inclusion in a
Schedule 14A proxy filing with the United States Securities and Exchange
Commission ("SEC"), Phelps Dodge outlined its latest proposal as follows:

               We propose a business combination of Phelps Dodge and Asarco
     pursuant to which all of the outstanding common stock of Asarco would be
     exchanged for Phelps Dodge common stock at an exchange ratio of 0.4098
     Phelps Dodge common shares for each Asarco common share.  We are also
     independently propos  ing to Cyprus Amax a business combination of Phelps
     Dodge and Cyprus Amax pursuant to which all of the outstanding common stock
     at an exchange ratio of 0.3135 Phelps Dodge common shares for each Cyprus
     Amax common share.

     18.  As the August 20 Phelps Dodge letter pointed out, based on the current
trading prices of all three companies' stocks (which would have presumably
already factored any anticipated beneficial effects of a purely two-way merger
between Asarco and Cyprus Amax), this revised Offer represented a premium of
approximately $24.05 per share, or $960 million), and a premium of approximately
29% for Cyprus Amax (valuing Cyprus Amax at $18.40 per share, or $1.7 billion).

     19.  As the August 20 Phelps Dodge letter also pointed out, "Following the
combination, we plan to continue the current $2.00 per share Phelps Dodge common
dividend. This would result in a substantial dividend increase for Asarco
shareholders to 4.1 times the dividend contemplated in your proposed merger with
Cyprus Amax."

                                       9
<PAGE>

     20.  In spite of this lucrative revised Offer to Asarco's shareholders by
Phelps Dodge, Asarco and Cyprus Amax again rejected said Offer outright.  Thus,
in response to this rejection, Phelps Dodge stated in the above-cited letter to
Asarco:

               We are disappointed in your response to our proposed three-way
     combination of Asarco, Cyprus Amax and Phelps Dodge.  As you know, we have
     on three recent occasions re  quested the opportunity to discuss our
     proposal, which we be  lieve would be far superior to your shareholders
     than your pro  posed combination with Cyprus Amax.  We are particularly
     disappointed that instead of accept  ing our previous requests to meet to
     discuss our proposal to acquire Asarco for a substantial premium, you chose
     today to announce unilaterally our interest in acquiring Asarco and Cy
     prus Amax and to reject our proposal in favor of your no-pre  mium merger
     proposal with Cyprus Amax.  This appears consis  tent with the manner in
     which you have chosen to treat you own shareholders by announcing just
     today, at the same time you first disclosed the terms of your July 15
     merger agreement, that the record date for your shareholders vote on the
     no-premium merger with Cyprus Amax would be August 25.  Since trades after
     today will settle after August 25, this effectively precluded any
     significant trading in the market on an informed basis before the
     determination of shareholders eligible to vote at your meeting.  In light
     of your unilateral announcement, we have no other choice than to publicly
     announce our proposal to enter into a business combination with Asarco and
     Cyprus Amax, so that shareholders of all three companies are fully
     informed.

     21.  It has since been disclosed in The Wall Street Journal and over the
                                         -----------------------
Dow Jones News Service on August 24, 1999, that the Asarco-Cyprus Amax merger
- ----------------------
agreement prohibits either company from negotiating with third parties.
According to the agreement, neither

                                       10
<PAGE>

company can "withdraw or modify, or propose publicly to withdraw or modify ...
the approval or recommendation by the board" of the merger agreement.

     22.  The Offer presents plaintiff and the Class an outstanding opportunity
to maximize the value of their Asarco shares for the following reasons:

          (a) The Offer, even as it now stands without any meaningful
consideration and due diligence by Asarco or negotiations between Phelps Dodge
and Asarco, would permit plaintiff and the Class to materially increase the
value of their investment in the Company.

          (b) The Offer represents a 30% premium over Asarco's trading price at
the close of business on August 19, 1999, before Phelps Dodge's interest in
acquiring Asarco and Cyprus Amax became public, and a price that presumably
already reflected any anticipated benefits of an Asarco-Cyprus Amax merger.

          (c) Over the past several years Phelps Dodge's stock price has
significantly outperformed the stock prices of Asarco and Cyprus Amax.  As a
result of Phelps Dodge's higher dividend, the level of outperformance is even
greater when viewed on the basis of the total return to shareholders assuming
reinvestment of dividends.  Over the past 10 years Phelps Dodge's total return
has been 161%, as compared to negative 20% for Asarco, and negative 26% for
Cyprus Amax.  Similarly, over the past 15 years, Phelps Dodge's total return has
been 1.024%, as compared to 255% for Asarco, and 102% for Cyprus Amax.

                                       11
<PAGE>

          (d) As stated in Phelps Dodge's August 20, 1999 letter, the proposed
three-way merger would generate estimated annual cost savings of an additional
$75 million over and beyond the $125 million in estimated cost savings from an
Asarco-Cyprus Amax merger.

          (e) A merger with Phelps Dodge, the nation's largest copper producer,
would have several significant benefits over the Asarco-Cyprus Amax merger, due
in part to Phelps Dodge's size, management team, and resource-rich portfolio of
global copper assets, including:

               (i)    the significantly stronger ability of the combined
                      company, relative to the Asarco-Cyprus Amax combination,
                      to integrate southwestern U.S. mining operations,
                      administrative functions in the U.S., Chile and Peru, and
                      worldwide exploration and devel opment activities;

               (ii)   the financial strength of the combined company and ability
                      to create a world-class portfolio of non-competitive
                      mining assets;

               (iii)  a strong and deep management team, at both the operating
                      and corporate levels, with strong credibility in the
                      marketplace;

               (iv)   the ability to eliminate substantial overhead,
                      exploration, pur chasing and other expense through the
                      three-way consolidation;

                                       12
<PAGE>

               (v)    the tremendous operating leverage of the combined company,
                      together with enough diversity in other business to
                      mitigate cyclical downturns;

               (vi)   the immediate and substantial accretion to the cash flow
                      of the combined company resulting from the transaction;

               (vii)  the significant accretion to earnings per share of the
                      combined entity beginning in the second year after
                      closing, based on the current portfolio of the combined
                      companies and analyst's esti mates of copper prices of
                      $0.80 to $0.85 per pound in 2001;

               (viii) the total current annual copper production of the combined
                      company of 3.8 billion pounds and attributable copper
                      reserves of 80 billion pounds;

               (ix)   the increased ability of the combined company to compete
                      for world-class projects.

          (f) The market showed great enthusiasm for the disclosure on August
20, 1999 of Phelps Dodge's proposal.  The market price of common shares of
Asarco immediately rose $4.00 per share, from $18-7/16 at the close of trading
on August 19, 1999 to $22-7/16 at the close of trading on August 20, 1999, and a
high of $22 1/2 on the following Monday, August 23, 1999.

                                       13
<PAGE>

          (g) The Offer represents a possible opportunity to maximize
shareholder value even in excess of the $2.66 billion offered for both Asarco
and Cyprus Amax through negotiation of the Offer and putting either Asarco alone
or Asarco together with Cyprus Amax up for auction.

                     CAUSE OF ACTION AGAINST ALL DEFENDANTS
                     --------------------------------------

     23.  The Individual Defendants have breached their fiduciary duties to
plaintiff and the Class by rejecting out-of-hand without fully evaluating or
becoming fully informed with regard to the Offer and without taking any steps to
maximize shareholder value for plaintiff and the members of the Class, and by
entering into an agreement with Cyprus Amax to prohibit either party from
negotiating with third parties.

     24.  Because Asarco has already been "put in play" by virtue of its
previously announced intended merger with Cyprus Amax, the Individual Defendants
are obligated to obtain the maximum possible value of Asarco public
shareholders, which duty they are breaching by virtue of their refusal to
consider the substantial superior Offer - providing a 30% premium to Asarco's
shareholders - proposed by Phelps Dodge.

     25.  By virtue of the acts and conduct herein, the Individual Defendants
are not acting in good faith and have breached their fiduciary and other common
law duties that they owe to plaintiff and the other members of the Class, have
engaged in unfair dealing for their own benefit and the detriment of the Class,
and have pursued a course of conduct designed to entrench themselves in their
positions of control within the Company.

                                       14
<PAGE>

     26.  The Individual Defendants have violated their fiduciary duties owed to
plaintiff and the other members of the Class in that they have not and are not
exercising independent business judgment and have acted and are acting to the
detriment of the Class in order to benefit themselves and solidify their
positions of control and enjoyment of the perquisites of office, and/or to
preserve the agreements regarding same already reached between them and Cyprus
Amax.

     27.  As a result of the foregoing, defendant's summary rejection of the
Offer is a breach of defendants' fiduciary duties and should be enjoined.

     28.  Plaintiff lacks an adequate remedy at law.

     WHEREFORE, plaintiff demands judgment as follows:

          (a) declaring this action to be a proper class action and certifying
plaintiff as the representative of the Class;

          (b) declaring defendants' rejection of the Offer to be a breach of
defendant's fiduciary duties of loyalty, due care, good faith, fair dealing, and
candor to plaintiff and the Class;

          (c) ordering the Individual Defendants to carry out their fiduciary
duties to plaintiff and the other members of the Class by:

               (i) Requiring defendants to consider the Offer in good faith, to
                   take all possible measures to maximize the value of Asarco
                   stock by, for example, engaging in a course of due diligence
                   and negotiat

                                       15
<PAGE>

                    ing with Phelps Dodge, or otherwise maximizing the value of
                    the Company to plaintiff and the Class; and

               (ii) requiring defendants to make full and fair disclosure of the
                    Offer, the negotiations between Asareo and Phelps Dodge, and
                    all other matters concerning a possible acquisition or
                    merger of Asarco that a reasonable investor would consider
                    important;

          (d) ordering defendants, jointly and severally, to pay to plaintiff
and other members of the Class all damages suffered and to be suffered by them
as a result of the acts and transactions alleged herein;

          (e) awarding plaintiff the costs and disbursements of this action,
including a reasonable allotment for plaintiff's attorneys' and expert's fees;
and

          (f) granting such other and further relief as the Court may deem just
and equitable.

                         LITE DePALMA GREENBERG & RIVAS, LLC

                         By: _________________________________
                              Bruce D. Greenberg
                              Allyn Z. Lite
                              Two Gateway Center, 12/th/ Floor
                              Newark, New Jersey  07102-5003
                              (73) 623-3000
                              Attorneys for Plaintiff

                                       16

<PAGE>

                                                                    EXHIBIT 99.8

TRUJILLO RODRIGUEZ & RICHARDS, LLC
3 Kings Highway East
Haddonfield, NJ 08033
(609) 795-9002

Attorneys for Plaintiff and the Class


- - - - - - - - - - - - - - - - - - -  - - - -   x
RICHARD D. GREENFIELD, on behalf of            :  SUPERIOR COURT OF NEW JERSEY
himself and all others similarly situated,     :  CHANCERY DIVISION
                                               :  MERCER COUNTY
                            Plaintiff,         :
                                               :  Docket No.:
   vs.                                         :
                                               :
RICHARD DeJONGH OSBORNE, KEVIN R.              :
MORANO, VINCENT A. CALARCO,                    :  CIVIL ACTION
MANUEL T. PACHECO, MARTHA T.                   :  ------------
MUSE, JOHN D. ONG, JAMES W.                    :
KINNEAR, JAMES WOOD, DR. E. GORDON             :
GEE, FRANCIS R. McALLISTER, JAMES C.           :  CLASS ACTION COMPLAINT
COTTING, DAVID C. GARFIELD, MICHAEL            :
T. NELLIGAN, WILLARD CARLISLE                  :
BUTCHER, ASARCO, INC. and CYPRUS               :
AMAX MINERALS CO.                              :
                                               :
                            Defendants.        :
- - - - - - - - - - - - - - - - - -- - - - - -   x

     Plaintiff Richard D. Greenfield, by his attorneys, for his Complaint,
alleges upon personal knowledge and belief as to his own acts and upon
information and belief as to all other matters, based upon investigation of
counsel, as follows:
<PAGE>

                              NATURE OF THE ACTION
                              --------------------

          1.   This action arises from breaches of fiduciary duties in
connection with a merger agreement entered into between Cyprus Amax Minerals Co.
("Cyprus Amax") and Asarco Inc. ("Asarco") for totally insufficient
consideration and in breach of defendants' fiduciary duties. Plaintiff alleges
that he and a proposed class of public shareholders of Asarco common stock are
entitled to enjoin the proposed transaction or, alternatively, to recover
damages in the event that the transaction is consummated.  Plaintiff brings this
action on behalf of the public holders of the outstanding common shares of
Asarco for injunctive and other relief in connection with an improperly
negotiated and structured merger conceived by defendants as detailed below.

                                  THE PARTIES
                                  -----------

          2.   Plaintiff has been, at all times relevant to this action an owner
of Asarco common stock.

          3.   Defendant Asarco is a New Jersey corporation with its executive
offices located at 180 Maiden Lane, New York, New York 10038.  Asarco is a
producer of nonferrous metals, principally copper, lead, zinc, and silver.

          4.   Defendant Francis R. McAllister is Chairman of the Board, Chief
Executive Officer and a director of Asarco.

          5.   Defendant Kevin Morano is President, Chief Operating Officer and
a director of Asarco.

                                       2
<PAGE>

          6.   The other individual defendants Richard DeJongh Osborne, Vincent
A. Calarco, Manuel T. Pacheco, Martha T. Muse, John D. Ong, James W. Kinnear,
James Wood, Dr. E. Gordon Gee, James C. Cotting, David C. Garfield, Michael T.
Nelligan and Willard Carlisle Butcher constitute the entire board of directors
of Asarco.

          7.   The individual defendants, as directors of Asarco owe fiduciary
duties of good faith, loyalty, fair dealing, due care, and full disclosure to
plaintiff and the other members of the Class (as defined below).

          8.   Defendant, Cyprus Amax is a Delaware corporation with its
principal place of business at 9100 East Mineral Circle, Englewood, CO 80112.
Cyprus Amax is a holding company that mines, processes and markets coal, iron
ore and gold.  Cyprus Amax has knowledge of the facts and circumstances
described below.  Therefore, Cyprus Amax has knowingly participated in the
breaches of fiduciary duty described herein and is liable as an aider and
abettor and for inducement of the individual defendants to breach their
fiduciary duties owed to plaintiff and the Class.

                            CLASS ACTION ALLEGATIONS
                            ------------------------

          9.   Plaintiff brings this action pursuant to the provisions of R.4:32
                                                                          -
of the New Jersey Court Rules on behalf of himself and all other shareholders of
Asarco as of July 15, 1999 (except the defendants herein and any persons, firm,
trust, corporation, or other entity related to or affiliated with them and their
successors in interest), who are or will be threatened with injury arising from
defendants' actions, as is more fully described herein (the "Class").

                                       3
<PAGE>

          10.  This action is properly maintainable as a class action for the
following reasons:

          a.   The Class is so numerous that joinder of all members is
impracticable.  There are thousands of shareholders of record of Asarco stock
and many more beneficial owners who are members of the Class.

          b.   Members of the Class are scattered throughout the United States
and are so numerous that it is impracticable to bring them all before this
Court.

          c.   There are questions of law and fact that are common to the Class
and that predominate over questions affecting any individual class member.  The
common question include, inter alia, the following:
                         ----- ----

                (1) Whether the transaction as negotiated and structured denies
shareholder information (particularly with respect to the value of their shares)
necessary to make an informed decision whether to sell their shares;

                (2) Whether defendants have violated their fiduciary duties by
contracting away their obligations to fully inform themselves regarding the
value of Asarco;

                (3) Whether the individual defendants, as directors of Asarco
have fulfilled, and are capable of fulfilling, their fiduciary duties to
plaintiff and the other members of the Class, including their duties of entire
fairness, loyalty, due care, and full disclosure;

                (4) Whether Cyprus Amax has aided and abetted the individual
defendants' breaches of fiduciary duties and otherwise induced them to do so;
and

                                       4
<PAGE>

                (5) Whether plaintiff and the other members of the Class would
be irreparably damaged were defendants not enjoined from the conduct described
herein.

          d.   The claims of plaintiff are typical of the claims of the other
members of the Class in that all members of the Class will be damaged by
defendants' actions.

          e.   Plaintiff is committed to prosecuting this action and has
retained competent counsel experienced in litigation of this nature.  Plaintiff
is an adequate representative of the Class.

          f.   A class action is superior to any other method available for the
fair and efficient adjudication of this controversy since it would be
impractical and undesirable for each of the members of the Class, who has
suffered or will suffer damages, to bring separate actions in various parts of
the country.

          g.   The prosecution of separate actions by individual members of the
Class would create a risk of inconsistent or varying adjudications with respect
to individual members of the Class which would establish incompatible standards
of conduct for the party opposing the Class.

          11.  At all relevant times the shares of Asarco were publicly traded
on the New York Stock Exchange.

                            SUBSTANTIVE ALLEGATIONS
                            -----------------------

          12.  On a date prior to July 15, 1999, the individual defendants
determined to put Asarco "in play" by causing it to enter into a business
combination with Cyprus Amax.  Once "in play," the individual defendants were
legally obligated pursuant to their duty of loyalty to obtain for plaintiff and
the Class the best possible price or terms for their Asarco shares.

                                       5
<PAGE>

          13.  On July 15, 1999 Cyprus Amax and Asarco announced that they had
entered into a merger agreement and that it had been unanimously approved by the
Boards of Directors of both companies.  The deal was described by both Cyprus
Amax and Asarco as a merger of equals.

          14.  The terms of the transaction provided that Cyprus Amax
shareholders will receive 0.765 shares of Asarco Cyprus common stock for each
share of Cyprus Amax common stock they own and Asarco shareholders will receive
one (1) share of Asarco Cyprus common stock for each share of Asarco common
stock they own (the "Transaction").  Defendants McAllister and Morano would be
principal beneficiaries of such a transaction since Cyprus Amax chairman is due
to retire next year.

          15.  The Wall Street Journal ("WSJ") reported on August 23rd, 1999
                   ---------------------------
that although the merger agreement was entered into by Cyprus Amax and Asarco on
July 15, 1999, they waited until August 20th to file the month-old agreement and
only then disclosed that the record date for the shareholders to vote at the
September 30th shareholder meeting would be Wednesday, August 25, 1999.  The WSJ
                                                                             ---
reported in the same article that although the Company had disclosed the record
date to the New York Stock Exchange earlier, it did not make its announcement
public regarding the record date until Friday, August 20th.  Not surprisingly,
Cyprus Amax and Asarco also announced on August 20th that Phelps Dodge
Corporation ("Phelps Dodge") had made previously concealed bids for both
companies or a combined Cyprus Asarco company.

          16.  Defendants' maneuvers were clearly designed to make sure that
only those shareholders who own shares of record by August 25th can vote at the
shareholder meeting.  Douglas

                                       6
<PAGE>

Yearley, Chairman and CEO of Phelps Dodge was reported in the WSJ as observing
                                                              ---
that, since trades on August 20th will settle after August 25, such record date
effectively precludes any significant trading in the market on an informed basis
before the determination of shareholders eligible to vote. Yearley was quoted in
the WSJ as stating that defendants' tactics amounted to a "shareholder squeeze
    ---
play".

          17.  Phelps Dodge responded to defendants' August 20th announcement by
offering to enter into a three-way merger that would result in $265 million in
annual cost savings to the combination of all three companies.  Phelps Dodge
proposed a business combination pursuant to which all of the outstanding common
stock of Asarco would be exchanged for Phelps Dodge common stock at an exchange
ratio of 0.4098 Phelps Dodge common shares for each Asarco common share.  Phelps
Dodge also proposed to Cyprus Amax a business combination of Phelps Dodge and
Cyprus Amax pursuant to which all outstanding common stock of Cyprus Amax would
be exchanged for Phelps Dodge common stock in an exchange ratio of 0.3135 Phelps
Dodge common shares for each Cyprus Amax common share.  Based on share prices
for the three companies' common shares before trading was halted on Friday,
August 20th, the ratios provided for a premium of approximately 30% for Asarco
and a premium of approximately 29% for Cyprus Amax.  Phelps Dodge also made it
clear to both Cyprus Amax and Asarco that although its preference was for a
transaction involving all three companies, it was willing to consider a
negotiated business combination with either Asarco or Cyprus Amax regardless of
whether the other company was willing to proceed on a negotiated basis.

                                       7
<PAGE>

          18.  Phelps Dodge's offer of August 20th was driven in part by the
apparent unwillingness of the Board of Directors of both companies to even
discuss the proposal notwith  standing serious overtures by Phelps Dodge and, in
particular, the fiduciary obligations of Asarco's Board.  Defendants' actions
are all the more egregious in that they rejected the Phelps Dodge proposal in
favor of the no-premium merger proposal improperly negotiated in July between
Cyprus Amax and Asarco.

          19.  The individual defendants, in violation of their fiduciary duties
owed to plaintiff and the Class, negotiated a merger agreement which strictly
prohibits any solicitation or indeed discussion of bids or potential bids, and
does not therefore provide for a bona fide fiduciary "out" of the Cyprus Amax
                                 ---- ----
merger deal, including responding to a proposal that would be more advantageous
to Asarco shareholders.  Therefore, while the Board of Asarco could withdraw its
recommendation to the shareholders that they vote in favor of the Transaction,
the Board has by contract prohibited and denied itself access to the very
information it would need to challenge that recommendation and cause the Board
to withdraw that recommendation.  In other words Asarco directors have attempted
to contract away their fiduciary responsibility and obligations to explore in
good faith all information which would shed light upon the value of the shares
of Asarco, to seek the best price for Asarco shares and have further breached
their fiduciary duties by failing to provide the shareholders with this needed
and material information in a timely and reasonable manner.

          20.  The individual defendants were and are under a continuing duty to
fully inform themselves before taking action or agreeing to refrain from taking
action, to elicit, promote,

                                       8
<PAGE>

consider and evaluate reasonable and bona fide offers for Asarco to assure that
                                     ---- ----
a "level playing field" exists when more than one bidder for the Company
emerges, and not to favor one bidder over another, unless it is designed to
assure and is reasonably related to achieving the best transaction for the
Asarco shareholders. The individual defendants breached their fiduciary duty by,
among other matters, failing to fully inform themselves about available
alternatives to the Transaction, including a transaction with Phelps Dodge, and
without fully informing themselves about the value of Asarco. They have further
breached their duty to plaintiff and the other Asarco shareholders by not
obtaining for them the best price for Asarco shares.

          21.  If the breaches of fiduciary duty described herein are permitted
to continue, the Asarco shareholders will forever lose the opportunity to have
the value of their Company arrived at through competitive bidding on a level
playing field and the opportunity to consider any other bidders which may come
forward.

          22.  By reason of the foregoing acts, practices and course of conduct
of defendants, plaintiff and the other members of the Class have been and will
be damaged because they will not receive their fair proportion of the value of
Asarco's assets and business, which far exceeds the Transaction consideration,
in the unfair Transaction at issue, have been and will be prevented from making
an informed decision whether to approve the Transaction, and will wrongfully
impede consideration of any other third party offer for greater consideration,
including the Phelps Dodge offer.

                                       9
<PAGE>

          23.  Defendant Cyprus Amax has acted and is acting with knowledge that
the other defendants are in breach of their fiduciary duties to Asarco
shareholders (owed to them by virtue of the merger agreement) and have
intentionally, recklessly or negligently induced, aided and abetted such
breaches of fiduciary duties by the directors of Asarco.

          24.  Unless enjoined by this Court, defendants will continue to breach
their fiduciary duties owed to plaintiff and the Class and will consummate the
Transaction to the irreparable harm of plaintiff and the Class.

          25.  Plaintiff and the other members of the Class have no adequate
remedy at law.
                               PRAYER FOR RELIEF
                               -----------------

     WHEREFORE, plaintiff, on behalf of himself and all others similarly
situated, prays for relief and judgment as follows:

          a.   For an order certifying the Class under the appropriate
provisions of R.  4:32 of the New Jersey Court Rules and appointing plaintiff
              -
and his counsel to represent the Class;

          b.   Ordering defendants to carry out their fiduciary duties to
plaintiff and the other members of the Class, including those of duty of care,
loyalty, full disclosure, and entire fairness;

          c.   Granting preliminary and permanent injunctive relief against the
consummation of the Transaction as described herein;

          d.   Ordering the individual defendants to explore alternatives and to
negotiate in good faith with all interested persons, including but not limited
to Phelps Dodge.

                                       10
<PAGE>

          e.   In the event the Transaction is consummated, rescinding the
Transaction and awarding rescissory damages;

          f.   Ordering defendants, jointly and severally, to pay to plaintiff
and to other members of the Class all damages suffered and to be suffered by
them as the result of the acts alleged herein;

          g.   Awarding plaintiff the costs and disbursements of this action
including allowances for plaintiff's reasonable attorneys and experts fees; and

          h.   Granting such other and further relief as the Court deems just,
proper and equitable.

Dated: August 25, 1999              TRUJILLO RODRIGUEZ & RICHARDS, LLC


                                    By:___________________________________
                                        Lisa J. Rodriguez
                                        3 Kings Highway East
                                        Haddonfield, NJ 08033
                                        (609) 795-9002


                                        LIEBENBERG & WHITE
                                        Ann D. White
                                        The Pavillion
                                        261 Old York Road, Suite 810
                                        Jenkintown, PA 19046
                                        (215) 481-0272

                                    Attorneys for Plaintiff and the Class

                                       11

<PAGE>

                                                                    EXHIBIT 99.9

              IN THE COURT OF CHANCERY OF THE STATE  OF DELAWARE

                          IN AND FOR NEW CASTLE COUNTY


- - - - - - - - - - - - - - - - - - -    x
KENNETH STEINER,                       :
                                       :  Civil Action No. 17384
              Plaintiff,               :
                                       :
       -against-                       :
                                       :
CYPRUS AMAX MINERALS CO., MILTON H.    :
 WARD, LINDA G. ALVARADO, GEORGE S.    :
 ANSELL, ALLEN BORN, WILLIAM C.        :
 BOUSQUETTE, THOMAS V. FALKIE, ANNE    :
 MAYNARD GRAY, ROCKWELL A.             :
 SCHNABEL, THEODORE M. SOLSO, JOHN     :
 HOYT STOOKEY, JAMES A. TODD, JR.,     :
 BILLIE B. TURNER and ASARCO INC.,     :
                                       :
              Defendants.              :
- - - - - - - - - - - - - - - - - - -    x


                                   COMPLAINT
                                   ---------

          Plaintiff, by and through his attorneys, alleges upon information and
belief except as to himself and his own actions, which he alleges upon
knowledge, as follows:
                               SUMMARY OF ACTION
                               -----------------

          1.   This action arises from breaches of fiduciary duties in
connection with a merger agreement entered into by Cyprus Amax Minerals Co.
("Cyprus Amax") and Asarco Inc. ("Asarco") for grossly inadequate consideration
and in breach of defendants' fiduciary duties. Plaintiff alleges that he and
other public shareholders of Cyprus Amax common stock are entitled
<PAGE>

to enjoin the proposed transaction or, alternatively, to recover damages in the
event that the transaction is consummated. Plaintiff brings this action on
behalf of the public holders of the outstanding common shares of Cyprus Amax for
injunctive and other relief in connection with an improperly negotiated and
structured merger conceived by defendants hereinafter described. One effect of
the negotiation and structure of the transaction is to deny shareholders
important information regarding the value of their shares of Cyprus Amax.

          2.   The result of defendants' actions is that the ASARCO and Cyprus
Amax merger provides no premium for the public shareholders in a transaction
which was unfairly negotiated and structured to avoid purposely any superior bid
for Cyprus Amax or the Cyprus Amax - Asarco combined entity.

                                  THE PARTIES
                                  -----------
          3.   Plaintiff has been, at all times relevant to this action an owner
of CYPRUS AMAX common stock.

          4.   Defendant Cyprus Amax is a Delaware corporation with its
principal executive offices located at 9100 East Mineral Circle, Englewood, CO
80112.  Cyprus Amax is a holding company with subsidiaries which explore for,
extract, process and market coal, copper, iron ore and gold.  Cyprus Amax
currently has over 90 million shares of common stock outstanding held by
approximately 37,000 shareholders of record.

                                       2
<PAGE>

          5.   Defendant Milton H. Ward is Chairman of the Board, President,
Chief Executive Officer and a director of Cyprus Amax.  His recent compensation
according to the March 99 proxy exceeds $3 million.

          6.   The other individual defendants Linda G. Alvarado, George S.
Ansell, Allen Born, William C. Bousquette, Thomas V. Falkie, Anne Maynard Gray,
Rockwell A. Schnabel, Theodore M. Solso, John Hoyt Stookey, James A. Todd, Jr.,
and Billie B. Turner with defendant Ward constitute the entire board of
directors of Cyprus Amax.

          7.   The individual defendants, as directors of Cyprus Amax owe
fiduciary duties of good faith, loyalty, fair dealing, due care, and full
disclosure to plaintiff and the other members of the Class (as defined below).

          8.   Defendant Asarco is a New Jersey corporation with its principal
place of business at 180 Maiden Lane, New York, New York 10038-4925.  Asarco

inter alia mines, smelts, refines and sells copper, silver, lead, zinc and gold
- ----- ----
ore molybdenum.  Asarco has knowledge of the facts and circumstances described
below.  Therefore, Asarco has knowingly participated in the breaches of
fiduciary duty described herein and is liable as an aider and abettor.

                            CLASS ACTION ALLEGATIONS
                            ------------------------

          9.   Plaintiff brings this action pursuant to Rule 23 of the Rules of
this Court, on behalf of themselves and all other shareholders of Cyprus Amax as
of July 15, 1999 (except the defendants herein and any persons, firm, trust,
corporation, or other entity related to or

                                       3
<PAGE>

affiliated with them and their successors in interest), who are or will be
threatened with injury arising from defendants' actions, as is more fully
described herein (the "Class").

          10.  This action is properly maintainable as a class action for the
following reasons:

               a.   The Class is so numerous that joinder of all members is
impracticable. There are approximately 37,000 record shareholders of CYPRUS AMAX
stock and many more beneficial owners who are members of the Class.

               b.   Members of the Class are scattered throughout the United
States and are so numerous that it is impracticable to bring them all before
this Court.

               c.   There are questions of law and fact that are common to the
Class and that predominate over questions affecting any individual class member.
The common questions include, inter alia, the following:
                              ----- ----
                    (1) Whether the transaction as negotiated and structured
denies shareholders information (particularly with respect to the value of their
shares) necessary to make an informed decision whether to sell their shares;

                    (2) Whether defendants have violated their fiduciary duties
by contracting away their obligations to fully inform themselves regarding the
value of Cyprus Amax;

                    (3) Whether the individual defendants, as directors of
Cyprus Amax have fulfilled, and are capable of fulfilling, their fiduciary
duties to plaintiff and the other

                                       4
<PAGE>

members of the Class, including their duties of entire fairness, loyalty, due
care, and full disclosure;

                    (4) Whether Asarco has aided and abetted the individual
defendants' breaches of fiduciary duties; and

                    (5) Whether plaintiff and the other members of the Class
would be irreparably damaged were defendants not enjoined from the conduct
described herein.

               d.   The claims of plaintiff is typical of the claims of the
other members of the class in that all members of the Class will be damaged by
defendants' actions.

               e.   Plaintiff is committed to prosecuting this action and has
retained competent counsel experienced in litigation of this nature.  Plaintiff
is adequate representatives of the Class.

               f.   A class action is superior to any other method available for
the fair and efficient adjudication of this controversy since it would be
impractical and undesirable for each of the members of the Class, who has
suffered or will suffer damages, to bring separate actions in various parts of
the country.

               g.   The prosecution of separate actions by individual members of
the Class would create a risk of inconsistent or varying adjudications with
respect to individual members of the Class which would establish incompatible
standards of conduct for the party opposing the Class.

                                       5
<PAGE>

          11.  At all relevant times the shares of CYPRUS AMAX were publicly
traded on the New York Stock Exchange.

                        THE CHALLENGED COURSE OF CONDUCT
                        --------------------------------

          12.  On July 15, 1999 Cyprus Amax and Asarco announced an agreement
unanimously approved by the Boards of both companies, for the combination of the
two companies in a merger of equals transaction.

          13.  Under the terms of the transaction, Cyprus Amax shareholders will
receive 0.765 shares of Asarco Cyprus common stock for each share of Cyprus Amax
common stock they own and Asarco shareholders will receive one (1) share of
Asarco Cyprus common stock for each share of Asarco common stock they own (the
"Transaction").

          14.  Although Cyprus Amax and Asarco entered into a merger agreement
on or about July 15, 1999, they waited until August 20th to file their merger
agreement and only then disclosed that the record date for the shareholders to
vote at the September 30th shareholder meeting would be Wednesday, August 25,
1999.  While the Company apparently obtained a waiver from the New York Stock
Exchange and disclosed the record date to the New York Stock Exchange earlier,
it did not make its announcement public regarding the record date until Friday,
August 20th.  Not coincidentally, Cyprus Amax and Asarco also announced on
August 20th that Phelps Dodge Corporation ("Phelps Dodge") had made bids for
both companies or a combined Cyprus Asarco company.  The defendants' tactics are
clear:  Only those shareholders who own shares of record by August 25th can vote
at the shareholder meeting.  As Phelps Dodge observed,

                                       6
<PAGE>

since trades on August 20 will settle after August 25, such record date
effectively precludes any significant trading in the market on an informed basis
before the determination of shareholders eligible to vote. As the Chairman of
Phelps Dodge aptly noted, the various tactics by defendants amount to
"shareholder squeeze play".

          15.  Given defendants' unilateral announcement on August 20th
regarding Phelps Dodge's previous bid, on August 20, 1999 Phelps Dodge went
public with a sweetened offer for both companies.  On August 20, Phelps Dodge
offered a three-way merger that would result in $265 million in annual cost
savings, including streamlining copper operations in the Southwest and combining
the administrative functions in the U.S., Chile and Peru, plus lower
depreciation.  Phelps Dodge proposing to Cyprus Amax a business combination of
Phelps Dodge and Cyprus Amax pursuant to which all outstanding common stock of
Cyprus Amax would be exchange for Phelps Dodge common stock in an exchange ratio
of 0.3135 Phelps Dodge common shares for each Cyprus Amax common share.  Phelps
Dodge has also proposed a business combination pursuant to which all of the
outstanding common stock of Asarco would be exchange for Phelps Dodge common
stock at an exchange ratio of 0.4098 Phelps Dodge common shares for each Asarco
common share.  Based on share prices for the three companies' common shares
before trading was halted on Friday, August 20th, the ratios implied a premium
of approximately 30% for Asarco and a premium of approxi  mately 29% for Cyprus
Amax, while preserving the relative economics of the exchange ratio under the
proposed combination of Cyprus Amax and Asarco.  Moreover, the proposed
transaction would be tax free to the

                                       7
<PAGE>

shareholders. Phelps Dodge also made it clear to both Cyprus Amax and Asarco
that although it preferred a transaction involving all three companies, they
were prepared to enter into a negotiated business combination with either Asarco
or Cyprus Amax regardless of whether the other company was willing to proceed on
a negotiated basis.

          16.  The public announcement of the August 20th bid by Phelps Dodge
was precipitated in part by Asarco's and Cyprus' refusal to even meet and
discuss the proposal notwithstanding several overtures by Phelps Dodge and to
reject out of hand any proposal in favor of the no-premium merger proposal
improperly negotiated in July between Cyprus Amax and Asarco.

          17.  In violation of their fiduciary duties the individual defendants
negotiated a merger agreement which strictly prohibits any solicitation or
indeed discussion of bids or potential bids, and does not therefore provide for
a bona fide fiduciary out.  Therefore, while the Board of Cyprus Amax could
  ---- ----
withdraw its recommendation to the shareholders that they vote in favor of the
Transaction, the Board has by contract prohibited and denied itself access to
the very information it would need to challenge that recommendation and cause
the Board to withdraw that recommenda  tion.  In other words, Cyprus Amax
directors have contracted away their fiduciary responsibility and obligations to
explore in good faith all information which would shed light upon the value of
the shares of Cyprus Amax and have further breached their duties by failing to
provide the shareholders with this needed and material information.

                                       8
<PAGE>

          18.  The individual defendants were and are under a continuing duty to
fully inform themselves before taking action, or agreeing to refrain from taking
action, to elicit, promote, consider and evaluate reasonable and bona fide
                                                                 ---- ----
offers for Cyprus Amax, to assure that a "level playing field" exists when more
than one bidder for the Company emerges, and not to favor one bidder over
another, unless it is designed to assure and is reasonably related to achieving
the best transaction for the Cyprus Amax shareholders.  The individual
defendants breached their fiduciary duty by, among other matters, failing to
fully inform themselves about available alternatives to the Transaction,
including a transaction with Phelps Dodge, and without fully informing
themselves about the value of Cyprus Amax.

          19.  If the breaches of fiduciary duty described herein are permitted
to continue, the Cyprus Amax shareholders will forever lose the opportunity to
have the value of their Company arrived at through competitive bidding on a
level playing field and the opportunity to consider any other bidders which may
come forward.

          20.  By reason of the foregoing acts, practices and course of conduct
of defendants, plaintiff and the other members of the Class have been and will
be damaged because they will not receive their fair proportion of the value of
Cyprus Amax's assets and business, which far exceeds (and could very well be
negotiated to an even higher level) the Transaction consideration, in the unfair
Transaction at issue, have been and will be prevented from making an informed
decision whether to approve the Transaction, and will wrongfully impede
consideration of any other third party offer for greater consideration,
including the Phelps Dodge offer.

                                       9
<PAGE>

          21.  Unless enjoined by this Court, defendants will continue to breach
their fiduciary duties owed to plaintiff and the Class and will consummate the
Transaction to the irreparable harm of plaintiff and the Class.

          22.  Plaintiff and the other members of the Class have no adequate
remedy at law.

          23.  WHEREFORE, plaintiff demands judgment as follows:

               a.   Declaring this to be a proper class action and naming
plaintiff as Class representative and his attorneys as Class counsel;

               b.   Ordering defendants to carry out their fiduciary duties to
plaintiff and the other members of the Class, including those of duty of care,
loyalty, full disclosure, and entire fairness;

               c.   Granting preliminary and permanent injunctive relief against
the consummation of the Transaction as described herein;

               d.   Ordering the individual defendants to explore alternatives
and to negotiate in good faith with all interested persons, including but not
limited to Phelps Dodge.

               e.   In the event the Transaction is consummated, rescinding the
Transaction and awarding rescissory damages;

               f.   Ordering defendants, jointly and severally, to pay to
plaintiff and to other members of the Class all damages suffered and to be
suffered by them as the result of the acts alleged herein;

                                       10
<PAGE>

               g.   Ordering defendants, jointly and severally, to account to
plaintiff and the Class for all profits realized and to be realized by them as a
result of the actions complained of and, pending such accounting, to hold such
profits in a constructive trust for the benefit of plaintiff and other members
of the Class;

               h.   Awarding plaintiff the costs and disbursements of the action
including allowances for plaintiff's reasonable attorneys and experts fees; and

               i.   Granting such other and further relief as may be just and
proper in the premises.

Dated:  August 23, 1999             CHIMICLES & TIKELLIS LLP


                                    ------------------------------
                                    Pamela S. Tikellis
                                    James C. Strum
                                    One Rodney Square
                                    P.O. Box 1035
                                    Wilmington, Delaware  19899

                                       11
<PAGE>

OF COUNSEL:

WOLF, HALDENSTEIN, ADLER, FREEMAN
& HERZ, LLP
270 Madison Avenue
New York, NY  10016
(212) 545-4600

                                       12

<PAGE>

                                                                   EXHIBIT 99.10


               IN THE COURT OF CHANCERY OF THE STATE OF DELAWARE
                          IN AND FOR NEW CASTLE COUNTY


- ------------------------------------------   x
CHARLES MILLER,                              :
                                             :
          Plaintiff,                         :
                                             :
       v.                                    :  Civil Action No.:
                                             :
CYPRUS AMAX MINERALS CO., MILTON H.          :
 WARD, LINDA G. ALVARADO, GEORGE S.          :
 ANSELL, ALLEN BORN, WILLIAM C.              :
 BOUSQUETTE, THOMAS V. FALKIE, ANNE          :
 MAYNARD GRAY, ROCKWELL A. SCHNABEL,         :
 THEODORE M. SOLSO, JOHN HOYT STOOKEY,       :
 JAMES A. TODD, JR., BILLIE B. TURNER and    :
 ASARCO INC.,                                :
                                             :
          Defendants.                        :
                                             :
- ------------------------------------------   x



                                   COMPLAINT
                                   ---------

          Plaintiff, by and through his attorneys, alleges upon information and
belief except as to himself and his own actions, which he alleges upon
knowledge, as follows:
                               SUMMARY OF ACTION
                               -----------------

          1.   This action arises from breaches of  fiduciary duties in
connection with a merger agreement entered into by Cyprus Amax Minerals Co.
("Cyprus Amax") and Asarco Inc. ("Asarco") for grossly inadequate consideration
and in breach of defendants' fiduciary duties.
<PAGE>

Plaintiff alleges that he and other public shareholders of Cyprus Amax common
stock are entitled to enjoin the proposed transaction or, alternatively, to
recover damages in the event that the transaction is consummated. Plaintiff
brings this action on behalf of the public holders of the outstanding common
shares of Cyprus Amax for injunctive and other relief in connection with an
improperly negotiated and structured merger conceived by defendants hereinafter
described. One effect of the negotiation and structure of the transaction is to
deny shareholders important information regarding the value of their shares of
Cyprus Amax.

          2.   The result of defendants' actions is that the ASARCO and Cyprus
Amax merger provides no premium for the public shareholders in a transaction
which was unfairly negotiated and structured to avoid purposely any superior bid
for Cyprus Amax or the Cyprus Amax - Asarco combined entity.

                                  THE PARTIES
                                  -----------
          3.   Plaintiff has been, at all times relevant to this action an owner
of CYPRUS AMAX common stock.

          4.   Defendant Cyprus Amax is a Delaware corporation with its
principal executive offices located at 9100 East Mineral Circle, Englewood, CO
80112.  Cyprus Amax is a holding company with subsidiaries which explore for,
extract, process and market coal, copper, iron ore and gold.  Cyprus Amax
currently has over 90 million shares of common stock outstanding held by
approximately 37,000 shareholders of record.

                                       2
<PAGE>

          5.   Defendant Milton H. Ward is Chairman of the Board, President,
Chief Executive Officer and a director of Cyprus Amax.  His recent compensation
according to the March 99 proxy exceeds $3 million.

          6.   The other individual defendants Linda G. Alvarado, George S.
Ansell, Allen Born, William C. Bousquette, Thomas V. Falkie, Anne Maynard Gray,
Rockwell A. Schnabel, Theodore M. Solso, John Hoyt Stookey, James A. Todd, Jr.,
and Billie B. Turner with defendant Ward constitute the entire board of
directors of Cyprus Amax.

          7.   The individual defendants, as directors of Cyprus Amax owe
fiduciary duties of good faith, loyalty, fair dealing, due care, and full
disclosure to plaintiff and the other members of the class (as defined below).

          8.   Defendant Asarco is a New Jersey corporation with its principal
place of business at 180 Maiden Lane, New York, New York 10038-4925. Asarco
inter alia mines, smelts, refines and sells copper, silver, lead, zinc and gold
- ----- ----
ore molybdenum. Asarco has knowledge of the facts and circumstances described
below.  Therefore, Asarco has knowingly participated in the breaches of
fiduciary duty described herein and is liable as an aider and abettor.

                            CLASS ACTION ALLEGATIONS
                            ------------------------

          9.   Plaintiff brings this action pursuant to Rule 23 of the Rules of
this Court, on behalf of themselves and all other shareholders of Cyprus Amax as
of July 15, 1999 (except the defendants herein and any persons, firm, trust,
corporation, or other entity related to or affiliated

                                       3
<PAGE>

with them and their successors in interest), who are or will be threatened with
injury arising from defendants' actions, as is more fully described herein (the
"Class").

          10.  This action is properly maintainable as a class action for the
following reasons:

               a.   The Class is so numerous that joinder of all members is
impractica ble. There are approximately 37,000 record shareholders of CYPRUS
AMAX stock and many more beneficial owners who are members of the Class.

               b.   Members of the Class are scattered throughout the United
States and are so numerous that it is impracticable to bring them all before
this Court.

               c.   There are questions of law and fact that are common to the
Class and that predominate over questions affecting any individual class member.
The common questions include, inter alia, the following;
                              ----- ----

                    (1) Whether the transaction as negotiated and structured
denies shareholders information (particularly with respect to the value of their
shares) necessary to make an informed decision whether to sell their shares;

                    (2) Whether defendants have violated their fiduciary duties
by contracting away their obligations to fully inform themselves regarding the
value of Cyprus Amax;

                    (3) Whether the individual defendants, as directors of
Cyprus Amax have fulfilled, and are capable of fulfilling, their fiduciary
duties to plaintiff and the other members of the Class, including their duties
of entire fairness, loyalty, due care, and full disclosure;

                                       4
<PAGE>

                    (4) Whether Asarco has aided and abetted the individual
defendants' breaches of fiduciary duties; and

                    (5) Whether plaintiff and the other members of the Class
would be irreparably damaged were defendants not enjoined from the conduct
described herein.

               d.   The claims of plaintiff is typical of the claims of the
other members of the class in that all members of the Class will be damaged by
defendants' actions.

               e.   Plaintiff is committed to prosecuting this action and has
retained competent counsel experienced in litigation of this nature. Plaintiff
is adequate representatives of the Class.

               f.   A class system is superior to any other method available for
the fair and efficient adjudication of this controversy since it would be
impractical and undesirable for each of the members of the Class, who has
suffered or will suffer damages, to bring separate actions in various parts of
the country.

             g.   The prosecution of separate actions by individual members of
the Class would create a risk of inconsistent or varying adjudications with
respect to individual members of the Class which would establish incompatible
standards of conduct for the party opposing the Class.

          11.  At all relevant times the shares of CYPRUS AMAX were publicly
traded on the New York Stock Exchange.

                                       5
<PAGE>

                        THE CHALLENGED COURSE OF CONDUCT
                        --------------------------------

          12.  On July 15, 1999 Cyprus Amax and Asarco announced an agreement
unanimously approved by the Boards of both companies, for the combination of the
two companies in a merger of equals transaction.

          13.  Under the terms of the transaction, Cyprus Amax shareholders will
receive 0.765 shares of Asarco Cyprus common stock for each share of Cyprus Amax
common stock they own and Asarco shareholders will receive one (1) share of
Asarco Cyprus common stock for each share of Asarco common stock they own.  (the
"Transaction").

          14.  Although Cyprus Amax and Asarco entered into a merger agreement
on or about July 15, 1999, they waited until August 20/th/ to file their merger
agreement and only then disclosed that the record date for the shareholders to
vote at the September 30/th/ shareholder meeting would be Wednesday, August 25,
1999. While the Company apparently obtained a waiver from the New York Stock
Exchange and disclosed the record date to the New York Stock Exchange earlier,
it did not make its announcement public regarding the record date until Friday,
August 20/th/. Not coincidentally, Cyprus Amax and Asarco also announced on
August 20/th/ that Phelps Dodge Corporation ("Phelps Dodge") had made bids for
both companies or a combined Cyprus Asarco company. The defendants' tactics are
clear:  Only those shareholders who own shares of record by August 25/th/ can
vote at the shareholder meeting.  As Phelps Dodge observed, since trades on
August 20 will settle after August 25, such record date effectively precludes
any significant trading in the market on an informed basis before the
determination of shareholders eligible to vote.  As

                                       6
<PAGE>

the Chairman of Phelps Dodge aptly noted, the various tactics by defendants
amount to "shareholder squeeze play."

          15.  Given defendants' unilateral announcement on August 20/th/
regarding Phelps Dodge's previous bid, on August 20, 1999, Phelps Dodge went
public with a sweetened offer for both companies.  On August 20, Phelps Dodge
offered a three-way merger that would result in $265 million in annual cost
savings, including streamlining copper operations in the Southwest and combining
the administrative functions in the U.S., Chile and Peru, plus lower
depreciation. Phelps Dodge proposing to Cyprus Amax a business combination of
Phelps Dodge and Cyprus Amax, pursuant to which all outstanding common stock of
Cyprus Amax would be exchange for Phelps Dodge common stock in an exchange ratio
of 0.3135 Phelps Dodge common shares for each Cyprus Amax common share.  Phelps
Dodge has also proposed a business combination pursuant to which all of the
outstanding common stock of Asarco would be exchange for Phelps Dodge common
stock at an exchange ratio of 0.4098 Phelps Dodge common shares for each Asarco
common share.  Based on share prices for the three companies' common shares
before trading was halted on Friday, August 20/th/, the ratios implied a premium
of approximately 30% for Asarco and a premium of approximately 29% for Cyprus
Amax, while preserving the relative economics of the exchange ratio under the
proposed combination of Cyprus Amax and Asarco.  Moreover, the proposed
transaction would be tax free to the shareholders.  Phelps Dodge also made it
clear to both Cyprus Amax and Asarco that although it preferred a transaction
involving all three companies, they were prepared to enter into a negotiated
business combination with either Asarco

                                       7
<PAGE>

or Cyprus Amax regardless of whether the other company was willing to proceed on
a negotiated basis.

          16.  The public announcement of the August 20/th/ bid by Phelps Dodge
was precipitated in part by Asarco's and Cyprus' refusal to even meet and
discuss the proposal notwithstanding several overtures by Phelps Dodge and to
reject out of hand any proposal in favor of the no-premium merger proposal
improperly negotiated in July between Cyprus Amax and Asarco.

          17.  In violation of their fiduciary duties the individual defendants
negotiated a merger agreement which strictly prohibits any solicitation or
indeed discussion of bids or potential bids, and does not therefore provide for
a bona fide fiduciary out.  Therefore, while the Board of Cyprus Amax could
  ---- ----
withdraw its recommendation to the shareholders that they vote in favor of the
Transaction, the Board has by contract prohibited and denied itself access to
the very information it would need to challenge that recommendation and cause
the Board to withdraw that recommendation.  In other words, Cyprus Amax
directors have contracted away their fiduciary responsibility and obligations to
explore in good faith all information which would shed light upon the value of
the shares of Cyprus Amax and have further breached their duties by failing to
provide the shareholders with this needed and material information.

          18.  The individual defendants were and are under a continuing duty to
fully inform themselves before taking action, or agreeing to refrain from taking
action, to elicit, promote, consider and evaluate reasonable and bona fide
                                                                 ---- ----
offers for Cyprus Amax, to assure that a "level

                                       8
<PAGE>

playing field" exists when more than one bidder for the Company emerges, and not
to favor one bidder over another, unless it is designed to assure and is
reasonably related to achieving the best transaction for the Cyprus Amax
shareholders. The individual defendants breached their fiduciary duty by, among
other matters, failing to fully inform themselves about available alternatives
to the Transaction, including a transaction with Phelps Dodge, and without fully
informing themselves about the value of Cyprus Amax.

          19.  If the breaches of fiduciary duty described herein are permitted
to continue, the Cyprus Amax shareholders will forever lose the opportunity to
have the value of their Company arrived at through competitive bidding on a
level playing field and the opportunity to consider any other bidders which may
come forward.

          20.  By reason of the foregoing acts, practices and course of conduct
of defendants, plaintiffs and the other members of the Class have been and will
be damaged because they will not receive their fair proportion of the value of
Cyprus Amax's assets and business, which far exceeds (and could very well be
negotiated to an even higher level) the Transaction consideration, in the unfair
Transaction at issue, have been and will be prevented from making an informed
decision whether to approve the Transaction, and will wrongfully impede
consideration of any other third party offer for greater consideration,
including the Phelps Dodge offer.

          21.  Unless enjoined by this Court, defendants will continue to breach
their fiduciary duties owed to plaintiff and the Class and will consummate the
Transaction to the irreparable harm of plaintiff and the Class.

                                       9
<PAGE>

          22.  Plaintiff and the other members of the Class have no adequate
remedy at law.

          23.  WHEREFORE, plaintiff demands judgment as follows:

               a.   Declaring this to be a proper class action and naming
plaintiff as Class representative and his attorneys as Class counsel;


               b.   Ordering defendants to carry out their fiduciary duties to
plaintiff and the other members of the Class, including those of duty of care,
loyalty, full disclosure, and entire fairness;

               c.   Granting preliminary and permanent injunctive relief against
the consummation of the Transaction as described herein;

               d.   Ordering the individual defendants to explore alternatives
and to negotiate in good faith with all interested persons, including but not
limited to Phelps Dodge.

               e.   In the event the Transaction is consummated, rescinding the
Transaction and awarding rescissory damages;

               f.   Ordering defendants, jointly and severally, to pay to
plaintiff and to other members of the Class all damages suffered and to be
suffered by them as the result of the acts alleged herein;

               g.   Ordering defendants, jointly and severally, to account to
plaintiff and the Class for all profits realized and to be realized by them as a
result of the actions complained of

                                       10
<PAGE>

and, pending such accounting, to hold such profits in a constructive trust for
the benefit of plaintiff and other members of the Class;

               h.   Awarding plaintiff the costs and disbursements of the action
including allowances for plaintiff's reasonable attorneys and experts fees; and

               i.   Granting such other and further relief as may be just and
proper in the premises.

Dated:    August 23, 1999                           CHIMICLES & TIKELLIS LLP




                                                    ---------------------------
                                                    Pamela S. Tikellis
                                                    James C. Strum
                                                    One Rodney Square
                                                    P. 0. Box 1035
                                                    Wilmington, Delaware 19899


OF COUNSEL:
Goodkind, Labaton, Rudoff
& Sucharow,  LLP
100 Park Avenue, 12th Floor
New York, NY 10017
(212) 907-0700

                                       11

<PAGE>

                                                                   EXHIBIT 99.11

               IN THE COURT OF CHANCERY OF THE STATE OF DELAWARE
                         IN AND FOR NEW CASTLE COUNTY

- ------------------------------------------------  x
DANIEL BRUNO, On Behalf Of Himself And All Others :
Similarly Situated,                               :
                                                  :
       Plaintiff,                                 :
                                                  :
   -against-                                      :  Civil Action No.:
                                                  :
JOHN HOYT STOOKEY, THEODORE M. SOLSO,             :
ANNE MAYNARD GRAY, ROCKWELL A.                    :
SHCHNABEL,  BILLIE B. TURNER, MILTON H.           :
WARD, WILLIAM C. BOUSQUETTE,  LINDA G.            :
ALVARADO, THOMAS V. FALKIE, GEORGE S.             :
ANSELL and CYPRUS AMAX MINERALS COM               :
PANY,                                             :
                                                  :
       Defendants.                                :
                                                  :
- ------------------------------------------------  x

                             CLASS ACTION COMPLAINT
                             ----------------------

          Plaintiff, by his attorneys, alleges upon information and belief,
except as to paragraph 1 which plaintiff alleges upon knowledge, as follows:

          1.   Plaintiff Daniel Bruno is a stockholder of defendant Cyprus Amax
Minerals Company ("Cyprus Amax" or the "Company"), and has been a Cyprus Amax
shareholder at all times relevant hereto.

          2.   Defendant Cyprus Amax is a Delaware corporation with its
principal executive offices located at 9100 East Mineral Circle, Englewood,
Colorado 80112.  Cyprus Amax
<PAGE>

produces copper, coal, and molybdenum, and explores for minerals worldwide. As
of August 3, 1999, there were over 90 million shares of Cyprus Amax common stock
outstanding.

          3.   The individual defendants have constituted the Board of Directors
of Cyprus Amax at all times relevant hereto.

          4.   In addition to serving as a Cyprus Amax director, individual
defendant Milton H. Ward ("Ward") has been Chairman of the  Board, President and
Chief Executive Officer of Cyprus Amax since 1992.  Those positions constitute
his principal occupation.  In calendar 1998, Ward received a salary of
$1,133,524, a bonus of $975,000 and long-term compensation awards valued in
excess of $1.5 million.

          5.   The Individual Defendants, as officers and/or directors of Cyprus
Amax, have a fiduciary relationship and responsibility to plaintiff and the
other common public stockholders of Cyprus Amax, and owe to plaintiff and the
other Cyprus Amax stockholders the highest obligations of good faith, loyalty,
fair dealing, due care and candor.

                            CLASS ACTION ALLEGATIONS
                            ------------------------

          6.   Plaintiff brings this action on his own behalf and as a class
action, pursuant to Rule 23 of the Rules of the Court of Chancery, on behalf of
all common stockholders of Cyprus Amax or their successors in interest, who are
being and will be harmed by defendants' actions described below (the "Class").
Excluded from the Class are defendants herein and any person, firm, trust,
corporation or other entity related to or affiliated with any of defendants.

          7.   This action is properly maintainable as a class action because:

                                       2
<PAGE>

               a.   The Class is so numerous that joinder of all members is
impractica ble.  As of August 3, 1999, there were more than 90 million Cyprus
Amax shares outstanding, held by hundreds, if not thousands, of stockholders
located throughout the United States.

               b.   There are questions of law and fact which are common to the
Class including:  whether the Individual Defendants have breached fiduciary
duties to Cyprus Amax's public stockholders and whether plaintiff and the other
Class members would be irreparably damaged if the defendants are not enjoined in
the manner described below:

               c.   Plaintiff is committed to prosecuting this action and has
retained competent counsel experienced in litigation of this nature.  The claims
of plaintiff are typical of the claims of the other members of the Class and
plaintiff has the same interests as the other members of the Class.
Accordingly, plaintiff is an adequate representative of the Class and will
fairly and adequately protect the interests of the Class.

               d.   The prosecution of separate actions by individual members of
the Class would create the risk of inconsistent or varying adjudications with
respect to individual members of the Class which would establish incompatible
standards of conduct for defendants, or adjudications with respect to individual
members of the Class which would as a practical matter be dispositive of the
interests of the other members not parties to the adjudications or substantially
impair or impede their ability to protect their interests.

                                       3
<PAGE>

               e.   The defendants have acted, or refused to act, on grounds
generally applicable to, and causing injury to, the Class and, therefore,
preliminary and final injunctive relief on behalf of the Class as a whole is
appropriate.

                                CLAIM FOR RELIEF
                                ----------------

          8.   On July 15, 1999, Cyprus Amax and ASARCO Incorporated ("Asarco")
announced an agreement for the combination of the two companies in a merger-of-
equals transaction (the "Merger").  The new company, to be named Asarco Cyprus
Incorporated, would be the largest publicly traded copper company in the world.
Under the terms of the transaction, Cyprus Amax common shareholders would
receive 0.765 shares of Asarco Cyprus common stock for each share of Cyprus Amax
common stock they own and ASARCO shareholders would receive one share of Asarco
Cyprus common stock for each share of ASARCO common stock they own. It was
anticipated that approximately 169 million shares of Asarco Cyprus common stock
will be issued, of which Cyprus Amax shareholders will own 69.2 million shares
or 63.5 percent following the Merger.

          9.   The Merger agreement provides that Asarco Cyprus would have a 16-
person board with eight members nominated by Cyprus Amax and eight by ASARCO.
Ward would be the co-Chief Executive Officer and Chairman of the combined
entity.

          10.  The foregoing exchange ratio offers no premium to the pre-
existing market value of the Cyprus Amax stock.  Although the Merger agreement
permits the Cyprus Amax Board to terminate the Merger if in the exercise of
their fiduciary duties they determined that another

                                       4
<PAGE>

proposal offered a superior transaction, the Merger agreement expressly
precludes both ASARCO and Cyprus Amax from entering into discussions with any
third party (the "No-Talk Provision").

          11.  Some time between July 15, 1999 and August 19, 1999, Phelps Dodge
Corporation ("Phelps Dodge") made an unsolicited proposal to acquire both Cyprus
Amax and ASARCO.  Phelps Dodge offered .2874 Phelps Dodge share for each Cyprus
Amax share, and .3756 Phelps Dodge share for each ASARCO share.

          12.  The exchange ratios contemplated by Phelps Dodge's initial offer
represented a premium to the trading price of Cyprus Amax common stock.  Based
on Phelps Dodge's closing price of $58-9/16 on August 19, 1999, its bid valued
Cyprus Amax at $16.83 a share -- over $2 per share or approximately 16% more
than the $14.50 closing price of Cyprus Amax common stock on August 19, 1999.
In addition, the proposal would result in a dividend increase for Cyprus Amax
shareholders to 4.1 times the dividend contemplated to be paid by Asarco Cyprus.
Moreover, over the past ten years, Phelps Dodge's total return has been 161% as
compared to negative 26% for Cyprus Amax and negative 20% for ASARCO.  A
combination of the three companies would create a larger, more efficient,
financially stronger company with a stronger balance sheet and enhanced earnings
and cash flow.

          13.  Notwithstanding that the Phelps Dodge offer represented a far
better value for Cyprus Amax shareholders, the Individual Defendants spurned at
least three efforts by Phelps Dodge to discuss its offer and on August 19, 1999
voted to reject the Phelps Dodge offer.  Citing

                                       5
<PAGE>

the No-Talk Provision, they refused to discuss the offer with Phelps Dodge. Both
the ASARCO and Cyprus Amax boards reaffirmed their determination to proceed with
the Merger.

          14.  Phelps Dodge is known in the copper industry as an aggressive
cost cutter willing to terminate personnel in order to enhance revenues.
Accordingly, Ward's job could be in jeopardy if Phelps Dodge were to acquire
Cyprus Amax.  Moreover, Phelps Dodge would have no motivation to maintain the
Board structure contemplated by the Merger agreement.

          15.  ASARCO and Cyprus Amax did not publicly disclose the Phelps Dodge
offer or the text of the Merger agreement until August 20, 1999.  On that date,
Cyprus Amax and ASARCO also disclosed that the record date for shareholders to
vote at the September 30 shareholders' meeting to consider the Merger would be
Wednesday, August 25, 1999.  Cyprus Amax had apparently sought and obtained a
waiver of the New York Stock Exchange minimum requirement for the time between
the announcement that a record date has been set and the record date itself.
Since it takes three days to clear transactions and only shareholders who own
shares on the record date can vote at a meeting, this late announcement of the
record date limits informed market trading and the ability of shareholders who
prefer the Phelps Dodge offer to purchase additional shares to vote against the
Merger.

          16.  On August 20, 1999, Phelps Dodge improved its offer to 0.4098
Phelps Dodge share for each ASARCO share and 0.3135 Phelps Dodge share for each
Cyprus Amax share, valuing Cyprus Amax at $1.68 billion or $18.54 per share, a
premium of approximately 29% to the pre-existing market price.

                                       6
<PAGE>

          17.  Phelps Dodge also indicated that it would be willing to improve
upon its offer for Cyprus Amax dependent on discussions with the Company.

          18.  Phelps Dodge also announced that it is willing to acquire either
Cyprus Amax or ASARCO individually.

          19.  On August 22, 1999, Phelps Dodge announced its intention to
pursue a proxy contest against the Merger.

          20.  In light of the foregoing, the Individual Defendants' fiduciary
obligations require them to:

               a.   undertake an appropriate evaluation of Cyprus Amax's worth
as a merger/acquisition candidate;

               b.   take all appropriate steps to enhance Cyprus Amax's value
and attractiveness as a merger/acquisition candidate;

               c.   take all appropriate steps to obtain the best available
transaction for Cyprus Amax, including but not limited to, engaging in serious
negotiations with Phelps Dodge or its representatives;

               d.   act independently so that the interests of Cyprus Amax's
public stockholders will be protected;

               e.   adequately ensure that no conflicts of interest exist
between defendants' own interests and their fiduciary obligation to maximize
stockholder value or, if such

                                       7
<PAGE>

conflicts exist, to ensure that all conflicts be resolved in the best interests
of Cyprus Amax's public stockholders; and

               f.   insure that they and Cyprus Amax's shareholders have
available all information material to decisions on a major corporate
transaction, including the highest consideration each potential acquiror is
prepared to offer and the terms and conditions of each offeror's proposal.

          21.  By agreeing to the No-Talk Provision, the Individual Defendants
breached their fiduciary duties.  They contracted away their ability to inform
themselves adequately to make judgments in the best interests of all Cyprus Amax
shareholders, and to obtain information to convey to Cyprus Amax shareholders to
enable them to exercise an informed franchise on the Merger.

          22.  The Individual Defendants have also manipulated the setting of a
record date for the shareholders' meeting on the Merger in order to improve the
prospects for shareholder approval of the Merger.

          23.  As a result of defendants' breaches of fiduciary duties,
plaintiff and the other members of the Class have been and will be damaged in
that they will not be able to exercise fully informed voting judgment on the
Merger and will be prevented from obtaining the best available transaction.

                                       8
<PAGE>

          24.  Unless enjoined by this Court, defendants will continue to breach
their fiduciary duties owed to plaintiff and the other members of the Class, all
to the irreparable harm of the Class.

          25.  Plaintiff and the other members of the Class have no adequate
remedy at law.

          WHEREFORE, plaintiff prays for judgment and relief as follows:

          A.   Ordering that this action may be maintained as a class action and
certifying plaintiff as Class representatives;

          B.   Declaring that defendants breached their fiduciary and other
duties to plaintiff and the other members of the Class;

          C.   Entering an order or orders requiring defendants to take the
steps set forth hereinabove and declaring the No-Talk Provision void and non-
enforceable;

          D.   Awarding compensatory damages against defendants individually and
severally in an amount to be determined;

          E.   Awarding plaintiff the costs and disbursements of this action,
including fees and experts' fees; and

          F.   Granting such other and further relief as the Court may deem just
and proper.

                                       9
<PAGE>

                              ROSENTHAL, MONHAIT, GROSS &
                                   GODDESS, P.A.

                              By:
                              Suite 1401, Mellon Bank Center
                              919 North Market Street
                              P.O. Box 1070
                              Wilmington, Delaware 19899
                              (302) 656-4433
                              Attorneys for Plaintiff

OF COUNSEL:

BERNSTEIN LITOWITZ BERGER
  & GROSSMANN LLP
1285 Avenue of the Americas
New York, New York 10019
(122) 554-1400



Dated:         August 24, 1999

                                       10

<PAGE>

                                                                   EXHIBIT 99.12

               IN THE COURT OF CHANCERY OF THE STATE OF DELAWARE
                         IN AND FOR NEW CASTLE COUNTY

- -----------------------------------   x
PAUL GREEN,                           :
                                      :
          Plaintiff,                  :
                                      :
   -against-                          :
                                      :  Civil Action No. 17383 NC
JOHN HOYT STOOKY, THEODORE M.         :
 SOLSO, ANN MAYNARD GRAY,             :
 ROCKWELL A. SCHNABEL, BILLIE B.      :
 TURNER, MILTON H. WARD, WILLIAM      :
 C. BOUSQUETTE, LINDA G. ALVARADO,    :
 THOMAS V. FALKIE, GEORGE S.          :
 ANSELL and CYPRUS AMAX MINERALS      :
 COMPANY,                             :
                                      :
          Defendants.                 :
- -----------------------------------   x



                             CLASS ACTION COMPLAINT
                             ----------------------

          Plaintiff, by his attorneys, alleges upon information and belief,
except as to paragraph 1 which plaintiff alleges upon knowledge, as follows:

          1.   Plaintiff Paul Green is a stockholder of defendant Cyprus Amax
Minerals Company ("Cyprus Amax" or the "Company"), and has been a Cyprus Amax
shareholder at all times relevant hereto.

          2.   Defendant Cyprus Amax is a Delaware corporation with its
principal executive offices located at 9100 East Mineral Circle, Englewood,
Colorado
<PAGE>

80112. Cyprus Amax produces copper, coal, and molybdenum, and explores for
minerals worldwide. As of August 3, 1999, there were over 90 million shares of
Cyprus Amax common stock outstanding.

          3.   The individual defendants have constituted the Board of Directors
of Cyprus Amax at all times relevant hereto.

          4.   In addition to serving as a Cyprus Amax director, individual
defendant Milton H. Ward ("Ward") has been Chairman of the Board, President and
Chief Executive officer of Cyprus Amax since 1992.  Those positions constitute
his principal occupation.  In calendar 1998, Ward received a salary of
$1,133,524, a bonus of $975,000 and long-term compensation awards valued in
excess of $1.5 million.

          5.   The Individual Defendants, as officers and/or directors of Cyprus
Amax, have a fiduciary relationship and responsibility to plaintiff and the
other common public stockholders of Cyprus Amax, and owe to plaintiff and the
other Cyprus Amax stockholders the highest obligations of good faith, loyalty,
fair dealing, due care and candor.

                            CLASS ACTION ALLEGATIONS
                            ------------------------

          6.   Plaintiff brings this action on his own behalf and as a class
action, pursuant to Rule 23 of the Rules of the Court of Chancery, on behalf of
all common stockholders of Cyprus Amax or their successors in interest, who are
being and will be harmed by defendants' actions described below (the "Class").
Excluded from the Class

                                       2
<PAGE>

are defendants herein and any person, firm, trust, corporation, or other entity
related to or affiliated with any of defendants.

          7.   This action is properly maintainable as a class action because:

               a.   The Class is so numerous that joinder of all members is
impracticable.  As of August 3, 1999, there were more than 90 million Cyprus
Amax shares outstanding, held by hundreds, if not thousands, of stockholders
located throughout the United States.

               b.   There are questions of law and fact which are common to the
Class including: whether the Individual Defendants have breached fiduciary
duties to Cyprus Amax's public stockholders and whether plaintiff and the other
Class members would be irreparably damaged if the defendants are not enjoined in
the manner described below.

               c.   Plaintiff is committed to prosecuting this action and has
retained competent counsel experienced in litigation of this nature. The claims
of plaintiff are typical of the claims of the other members of the Class and
plaintiff has the same interests as the other members of the Class. Accordingly,
plaintiff is an adequate representative of the Class and will fairly and
adequately protect the interests of the Class.

               d.   The prosecution of separate actions by individual members of
the Class would create the risk of inconsistent or varying adjudications with

                                       3
<PAGE>

respect to individual members of the Class which would establish incompatible
standards of conduct for defendants, or adjudications with respect to individual
members of the Class which would as a practical matter be dispositive of the
interests of the other members not parties to the adjudications or substantially
impair or impede their ability to protect their interests.

               e.   The defendants have acted, or refused to act, on grounds
generally applicable to, and causing injury to, the Class and, therefore,
preliminary and final injunctive relief on behalf of the Class as a whole is
appropriate.

                                CLAIM FOR RELIEF
                                ----------------

          8.   On July 15, 1999, Cyprus Amax and ASARCO Incorporated ("Asarco")
announced an agreement for the combination of the two companies in a merger-of-
equals transaction (the "Merger"). The new company, to be named Asarco Cyprus
Incorporated, would be the largest publicly traded copper company in the world.
Under the terms of the transaction, Cyprus Amax common shareholders would
receive 0.765 shares of Asarco Cyprus common stock for each share of Cyprus Amax
common stock they own and ASARCO shareholders would receive one share of Asarco
Cyprus common stock for each share of ASARCO common stock they own. It was
anticipated that approximately 109 million shares of Asarco Cyprus common stock
will be issued, of which Cyprus Amax shareholders will own 69.2 million shares
or 63.5 percent following the Merger.

                                       4
<PAGE>

          9.   The Merger agreement provides that Asarco Cyprus would have a 16-
person board with eight members nominated by Cyprus Amax and eight by ASARCO.
Ward would be the co-Chief Executive officer and Chairman of the combined
entity.

          10.  The foregoing exchange ratio offers no premium to the pre-
existing market value of the Cyprus Amax stock. Although the Merger agreement
permits the Cyprus Amax Board to terminate the Merger if in the exercise of
their fiduciary duties they determined that another proposal offered a superior
transaction, the Merger agreement expressly precludes both ASARCO and Cyprus
Amax from entering into discussions with any third party (the "No-Talk
Provision").

          11.  Some time between July 15, 1999 and August 19, 1999, Phelps Dodge
Corporation ("Phelps Dodge") made an unsolicited proposal to acquire both Cyprus
Amax and ASARCO. Phelps Dodge offered .2874 Phelps Dodge share for each Cyprus
Amax share, and .3756 Phelps Dodge share for each ASARCO share.

          12.  The exchange ratios contemplated by Phelps Dodge's initial offer
represented a premium to the trading price of Cyprus Amax common stock. Based on
Phelps Dodge's closing price of $58-9/16 on August 19, 1999, its bid valued
Cyprus Amax at $16.83 a share -- over $2 per share or approximately 16% more
than the $14.50 closing price of Cyprus Amax common stock on August 19, 1999. In
addition, the proposal would result in a dividend increase for Cyprus Amax
shareholders to 4.1 times

                                       5
<PAGE>

the dividend contemplated to be paid by Asarco Cyprus. Moreover, over the past
ten years, Phelps Dodge's total return has been 161% as compared to negative 26%
for Cyprus Amax and negative 20% for ASARCO. A combination of the three
companies would create a larger, more efficient, financially stronger company
with a stronger balance sheet and enhanced earnings and cash flow.

          13.  Notwithstanding that the Phelps Dodge offer represented a far
better value for Cyprus Amax shareholders, the Individual Defendants spurned at
least three efforts by Phelps Dodge to discuss its offer and on August 19, 1999
voted to reject the Phelps Dodge offer.  Citing the No-Talk Provision, they
refused to discuss the offer with Phelps Dodge.  Both the ASARCO and Cyprus Amax
Boards reaffirmed their determination to proceed with the Merger.

          14.  Phelps Dodge is known in the copper industry as an aggressive
cost cutter willing to terminate personnel in order to enhance revenues.
Accordingly, Ward's job could be in jeopardy if Phelps Dodge were to acquire
Cyprus Amax. Moreover, Phelps Dodge would have no motivation to maintain the
Board structure contemplated by the Merger agreement.

          15.  ASARCO and Cyprus Amax did not publicly disclose the Phelps Dodge
offer or the text of the Merger Agreement until August 20, 1999.  On that date,
Cyprus Amax and ASARCO also disclosed that the record date for shareholders to
vote at the September 30 shareholders' meeting to consider the Merger would be
Wednesday,

                                       6
<PAGE>

August 25, 1999. Cyprus Amax had apparently sought and obtained a waiver of the
New York Stock Exchange minimum requirement for the time between the announce
ment that a record date has been set and the record date itself. Since it takes
three days to clear transactions and only shareholders who own shares on the
record date can vote at a meeting, this late announcement of the record date
limits informed market trading and the ability of shareholders who prefer the
Phelps Dodge offer to purchase additional shares to vote against the Merger.

          16.  On August 20, 1999, Phelps Dodge improved its offer to 0.4098
Phelps Dodge share for each ASARCO share and 0.3135 Phelps Dodge share for each
Cyprus Amax share, valuing Cyprus Amax at $1.68 billion or $18.54 per share, a
premium of approximately 29% to the pre-existing market price.

          17.  Phelps Dodge also indicated that it would be willing to improve
upon its offer for Cyprus Amax dependent on discussions with the Company.

          18.  Phelps Dodge also announced that it is willing to acquire either
Cyprus Amax or ASARCO individually.

          19.  On August 22, 1999, Phelps Dodge announced its intention to
pursue a proxy contest against the Merger.

          20.  In light of the foregoing, the Individual Defendants fiduciary
obligations require them to:

                                       7
<PAGE>

               a.   undertake an appropriate evaluation of Cyprus Amax's worth
as a merger/acquisition candidate;

               b.   take all appropriate steps to enhance Cyprus Amax's value
and attractiveness as a merger/acquisition candidate;

               c.   take all appropriate steps to obtain the best available
transaction for Cyprus Amax, including but not limited to, engaging in serious
negotiations with Phelps Dodge or its representatives;

               d.   act independently so that the interests of Cyprus Amax's
public stockholders will be protected;

               e.   adequately ensure that no conflicts of interest exist
between defendants' own interests and their fiduciary obligation to maximize
stockholder value or, if such conflicts exist, to ensure that all conflicts be
resolved in the best interests of Cyprus Amax's public stockholders; and

               f.   insure that they and Cyprus Amax 's shareholders have
available all information material to decisions on a major corporate
transaction, including the highest consideration each potential acquiror is
prepared to offer and the terms and conditions of each offeror's proposal.

          21.  By agreeing to the No-Talk Provision, the Individual Defendants
breached their fiduciary duties.  They contracted away their ability to inform
themselves adequately to make judgments in the beat interests of all Cyprus Amax
shareholders,

                                       8
<PAGE>

and to obtain information to convey to Cyprus Amax shareholders to enable them
to exercise an informed franchise on the Merger.

          22.  The Individual Defendants have also manipulated the setting of a
record date for the shareholders' meeting on the Merger in order to improve the
prospects for shareholder approval of the Merger.

          23.  As a result of defendants' breaches of fiduciary duties,
plaintiff and the other members of the Class have been and will be damaged in
that they will not be able to exercise fully informed voting judgment on the
merger and will be prevented from obtaining the best available transaction.

          24.  Unless enjoined by this Court, defendants will continue to breach
their fiduciary duties owed to plaintiff and the other members of the Class, all
to the irreparable harm of the Class.

          25.  Plaintiff and the other members of the Class have no adequate
remedy at law.

          WHEREFORE, plaintiff prays for judgment and relief as follows:

          A.   Ordering that this action may be maintained as a class action and
certifying plaintiff as Class representatives;

          B.   Declaring that defendants breached their fiduciary and other
duties to plaintiff and the other members of the Class;

                                       9
<PAGE>

          C.   Entering an order or orders requiring defendants to take the
steps set forth hereinabove and declaring the No-Talk Provision void and non-
enforceable;

          D.   Awarding compensatory damages against defendants individually and
severally in an amount to be determined;

          E.   Awarding plaintiff the costs and disbursements of this action,
including fees and experts' fees; and

          F.   Granting such other and further relief as the Court may deem just
and proper.

                                       10
<PAGE>

                                         ROSENTHAL, MONHAIT, GROSS &
                                              GODDESS, P.A.



                                         By:
                                            ---------------------------
                                         Suite 1401, Mellon Bank Center
                                         919 North Market Street
                                         P.O. Box 1070
                                         Wilmington, Delaware 19899
                                         (302) 656-4433
                                         Attorneys for Plaintiff


OF COUNSEL:

ABBEY, GARDY SQUITIERI, LLP
212 East 39th Street
New York, New York 10016
(212) 889-3700

LAW OFFICES OF JEFFREY S. ABRAHAM
60 East 42nd Street, Suite 4700
New York, New York 10165
(212) 692-0555

Dated:    August 24, 1999

                                       11

<PAGE>

                                                                   EXHIBIT 99.13

              IN THE COURT OF CHANCERY OF THE STATE  OF DELAWARE
                          IN AND FOR NEW CASTLE COUNTY

- - - - - - - - - - - - - - - - - - -    x
DANIEL LIFSHITZ,                       :
                                       :
              Plaintiff,               :
                                       :
       -against-                       :  Civil Action No. 17386
                                       :
JOHN HOYT STOOKEY, THEODORE M.         :
 SOLSO, ANN MAYNARD GRAY,              :
 ROCKWELL A. SCHNABEL, BILLIE B.       :
 TURNER, MILTON H. WARD, WILLIAM C.    :
 BOUSQUETTE, LINDA G. ALVARDO,         :
 THOMAS V. FALKIE, GEORGE S. ANSELL    :
 and CYPRUS AMAX MINERALS COMPANY,     :
                                       :
              Defendants.              :
- - - - - - - - - - - - - - - - - - -    x


                             CLASS ACTION COMPLAINT
                             ----------------------
          Plaintiff, by his attorneys, alleges upon information and belief,
except as to paragraph 1 which plaintiff alleges upon knowledge, as follows:

          1.   Plaintiff Daniel Lifshitz is a stockholder of defendant Cyprus
Amax Minerals Company ("Cyprus Amax" or the "Company"), and has been a Cyprus
Amax shareholder at all times relevant hereto.

          2.   Defendant Cyprus Amax is a Delaware corporation with its
principal executive offices located at 9100 East Mineral Circle, Englewood,
Colorado 80112.  Cyprus Amax produces copper, coal, and molybdenum, and explores
for minerals worldwide.  As
<PAGE>

of August 3, 1999, there were over 90 million shares of Cyprus Amax common stock
outstanding.

          3.   The individual defendants have constituted the Board of Directors
of Cyprus Amax at all times relevant hereto.

          4.   In addition to serving as a Cyprus Amax director, individual
defendant Milton H. Ward ("Ward") has been Chairman of the Board, President and
Chief Executive Officer of Cyprus Amax since 1992.  Those positions constitute
his principal occupation. In calendar 1998, Ward received a salary of
$1,133,524, a bonus of $975,000 and long-term compensation awards valued in
excess of $1.5 million.

          5.   The Individual Defendants, as officers and/or directors of Cyprus
Amax, have a fiduciary relationship and responsibility to plaintiff and the
other common public stockholders of Cyprus Amax, and owe to plaintiff and the
other Cyprus Amax stockholders the highest obligations of good faith, loyalty,
fair dealing, due care and candor.

                            CLASS ACTION ALLEGATIONS
                            ------------------------

          6.   Plaintiff brings this action on his own behalf and as a class
action, pursuant to Rule 23 of the Rules of the Court of Chancery, on behalf of
all common stockholders of Cyprus Amax or their successors in interest, who are
being and will be harmed by defendants' actions described below (the "Class").
Excluded from the Class are defendants herein and any person, firm, trust,
corporation, or other entity related to or affiliated with any of defendants.

                                       2
<PAGE>

          7.   This action is properly maintainable as a class action because:

               a.   The Class is so numerous that joinder of all members
impracticable.  As of August 3, 1999, there were more than 90 million Cyprus
Amax shares outstanding, held by hundreds, if not thousands, of stockholders
located throughout the United States.

               b.   There are questions of law and fact which are common to the
Class including:  whether the Individual Defendants have breached fiduciary
duties to Cyprus Amax's public stockholders and whether plaintiff and the other
Class members would be irreparably damaged if the defendants are not enjoined in
the manner described below.

               c.   Plaintiff is committed to prosecuting this action and has
retained competent counsel experienced in litigation of this nature.  The claims
of plaintiff are typical of the claims of the other members of the Class and the
plaintiff has the same interests as the other members of the Class.
Accordingly, plaintiff is an adequate representative of the Class and will
fairly and adequately protect the interests of the Class.

               d.   The prosecution of separate actions by individual members of
the Class would create the risk of inconsistent or varying adjudications with
respect to individual members of the Class which would establish incompatible
standards of conduct for defendants, or adjudications with respect to individual
members of the Class which would as a practical matter be dispositive of the
interests of the other members not parties to the adjudications or substantially
impair or impede their ability to protect their interests.

                                       3
<PAGE>

               e.   The defendants have acted, or refused to act, on grounds
generally applicable to,  and causing injury to, the Class and, therefore,
preliminary and final injunctive relief on behalf of the Class as a whole is
appropriate.

                                CLAIM FOR RELIEF
                                ----------------

          8.   On July 15, 1999, Cyprus Amax and ASARCO Incorporated ("Asarco")
announced an agreement for the combination of the two companies in a merger-of-
equals transaction (the "Merger").  The new company, to be named Asarco Cyprus
Incorporated, would be the largest publicly traded copper company in the world.
Under the terms of the transaction, Cyprus Amax common shareholders would
receive 0.765 shares of Asarco Cyprus common stock for each share of Cyprus Amax
common stock they own and ASARCO shareholders would receive one share of Asarco
Cyprus common stock for each share of ASARCO common stock they own.  It was
anticipated that approximately 109 million shares of Asarco Cyprus common stock
will be issued, of which Cyprus Amax shareholders will own 69.2 million shares
of 63.5 percent following the Merger.

          9.   The Merger agreement provides that Asarco Cyprus would have a 16-
person board with eight members nominated by Cyprus Amax and eight by ASARCO.
Ward would be the co-Chief Executive Officer and Chairman of the combined
entity.

          10.  The foregoing exchange ratio offers no premium to the pre-
existing market value of the Cyprus Amax stock.  Although the Merger agreement
permits the Cyprus Amax Board to terminate the Merger if in the exercise of
their fiduciary duties they

                                       4
<PAGE>

determined that another proposal offered a superior transaction, the Merger
agreement expressly precludes both ASARCO and Cyprus Amax from entering into
discussions with any third party (the "No-Talk Provision").

          11.  Some time between July 15, 1999 and August 19, 1999, Phelps Dodge
Corporation ("Phelps Dodge") made an unsolicited proposal to acquire both Cyprus
Amax and ASARCO.  Phelps Dodge offered .2874 Phelps Dodge share for each Cyprus
Amax share, and .3756 Phelps Dodge share for each ASARCO share.

          12.  The exchange ratios contemplated by Phelps Dodge's initial offer
represented a premium to the trading price of Cyprus Amax common stock.  Based
on Phelps Dodge's closing price of $58-9/16 on August 19, 1999, its bid valued
Cyprus Amax at $16.83 a share - over $2 per share or approximately 16% more than
the $14.50 closing price of Cyprus Amax common stock on August 19, 1999.  In
addition, the proposal would result in a dividend increase for Cyprus Amax
shareholders to 4.1 times the dividend contemplated to be paid by Asarco Cyprus.
Moreover, over the past ten years, Phelps Dodge's total return has been 161% as
compared to negative 26% for Cyprus Amax and negative 20% ASARCO. A combination
of the three companies would create a larger, more efficient, financially
stronger company with a stronger balance sheet and enhanced earnings and cash
flow.

          13.  Notwithstanding that the Phelps Dodge offer represented a far
better value for Cyprus Amax shareholders, the Individual Defendants spurned at
least three efforts by Phelps Dodge to discuss its offer and on August 19, 1999
voted to reject the Phelps

                                       5
<PAGE>

Dodge offer. Citing the No-Talk Provision, they refused to discuss the offer
with Phelps Dodge. Both the ASARCO and Cyprus Amax Boards reaffirmed their
determination to proceed with the Merger.

          14.  Phelps Dodge is known in the copper industry as an aggressive
cost cutter willing to terminate personnel in order to enhance revenues.
Accordingly, Ward's job could be in jeopardy if Phelps Dodge were to acquire
Cyprus Amax.  Moreover, Phelps Dodge would have no motivation to maintain the
Board structure contemplated by the Merger agreement.

          15.  ASARCO and Cyprus Amax did not publicly disclose the Phelps Dodge
offer or the text of the Merger agreement until August 20, 1999.  On that date,
Cyprus Amax and ASARCO also disclosed that the record date for shareholders to
vote at the September 30 shareholders' meeting to consider the Merger would be
Wednesday, August 25, 1999.  Cyprus Amax had apparently sought and obtained a
waiver of the New York Stock Exchange minimum requirement for the time between
the announcement that a record date has been set and the record date itself.
Since it takes three days to clear transactions and only shareholders who own
shares on the record date can vote at a meeting, this late announcement of the
record date limits informed market trading and the ability of shareholders who
prefer the Phelps Dodge offer to purchase additional shares to vote against the
Merger.

                                       6
<PAGE>

          16.  On August 20, 1999, Phelps Dodge improved its offer to 0.4098
Phelps Dodge share for each ASARCO share and 0.3135 Phelps Dodge share for each
Cyprus Amax share, valuing Cyprus Amax at $1.68 billion or $18.54 per share, a
premium of approximately 29% to the pre-existing market price.

          17.  Phelps Dodge also indicated that it would be willing to improve
upon its offer for Cyprus Amax dependent on discussions with the Company.

          18.  Phelps Dodge also announced that it is willing to acquire either
Cyprus Amax or ASARCO individually.

          19.  On August 22, 1999, Phelps Dodge announced its intention to
pursue a proxy contest against the Merger.

          20.  In light of the foregoing, the Individual Defendants fiduciary
obligations require them to:

               a.   undertake an appropriate evaluation of Cyprus Amax's worth
as a merger/acquisition candidate;

               b.   take all appropriate steps to enhance Cyprus Amax's value
and attractiveness as a merger/acquisition candidate;

               c.   take all appropriate steps to obtain the best available
transaction for Cyprus Amax, including but not limited to, engaging in serious
negotiations with Phelps Dodge or its representatives;

                                       7
<PAGE>

               d.   act independently so that the interests of Cyprus Amax's
public stockholders will be protected;

               e.   adequately ensure that no conflicts of interest exist
between defendants' own interests and their fiduciary obligation to maximize
stockholder value or, if such conflicts exist, to ensure that all conflicts be
resolved in the best interests of Cyprus Amax's public stockholders; and

               f.   insure that they and Cyprus Amax's shareholders have
available all information material to decisions on a major corporate
transaction, including the highest consideration each potential acquiror is
prepared to offer and the terms and conditions of each offeror's proposal.

          21.  By agreeing to the No-Talk Provision, the Individual Defendants
breached their fiduciary duties.  They contracted away their ability to inform
themselves adequately to make judgments in the best interests of all Cyprus Amax
shareholders, and to obtain information to convey to Cyprus Amax shareholders to
enable them to exercise an informed franchise on the Merger.

          22.  The Individual Defendants have also manipulated the setting of a
record date for the shareholders' meeting on the Merger in order to improve the
prospects for shareholder approval of the Merger.

          23.  As a result of defendants' breaches of fiduciary duties,
plaintiff and the other members of the Class have been and will be damaged in
that they will not be able

                                       8
<PAGE>

to exercise fully informed voting judgment on the Merger and will be prevented
from obtaining the best available transaction.

          24.  Unless enjoined by this Court, defendants will continue to breach
their fiduciary duties owed to plaintiff and the other members of the Class, all
to the irreparable harm of the Class.

          25.  Plaintiff and the other members of the Class have no adequate
remedy at law.

          WHEREFORE, plaintiff prays for judgment and relief as follows:

          A.   Ordering that this action may be maintained as a class action and
certifying plaintiff as Class representatives;

          B.   Declaring that defendants breached their fiduciary and other
duties to plaintiff and the other members of the Class;

          C.   Entering an order or orders requiring defendants to take the
steps set forth hereinabove and declaring the No-Talk Provision void and non-
enforceable;

          D.   Awarding compensatory damages against defendants individually and
severally in an amount to be determined;

          E.   Awarding plaintiff the costs and disbursements of this action,
including fees and experts' fees; and

          F.   Granting such other and further relief as the Court may deem just
and proper.

                                       9
<PAGE>

                                      ROSENTHAL, MONHAIT, GROSS &
                                            GODDESS, P.A.


                                      By:
                                         --------------------------------
                                      Suite 1401, Mellon Bank Center
                                      919 North Market Street
                                      P.O. Box 1070
                                      Wilmington, Delaware  19899
                                      (302) 656-4433
                                      Attorneys for Plaintiff

OF COUNSEL:

BERNSTEIN LIEBHARD & LIFSHITZ, LLP
10 East 40/th/ Street
New York, New York  10016
(212) 779-1414


Dated:         August 24, 1999

                                       10

<PAGE>

                                                                   EXHIBIT 99.14


               IN THE COURT OF CHANCERY OF THE STATE OF DELAWARE

                          IN AND FOR NEW CASTLE COUNTY

- - - - - - - - - - - - - - - - - - - x
                                    :
ANDREW KLOTZ,                       :
                                    :
                    Plaintiff,      :
                                    :
     v.                             :    Civil Action No. 17385NC
                                    :
MILTON H. WARD; LINDA G.            :
ALVARDO; GEORGE S. ANSELL;          :
ROCKWELL A. SCHNABEL; WILLIAM       :
C. BOUSQUETTE; THOMAS V. FALKIE;    :
ANN MAYNARD GRAY; THEODORE M.       :
SOLSO; JOHN H. STOOKEY; BILLIE      :
B. TURNER; ALLEN BORN; JAMES        :
A. TODD, JR.; and CYPRUS AMAX       :
MINERALS COMPANY,                   :
                                    :
                    Defendants.     :
                                    :
- - - - - - - - - - - - - - - - - - - x


                                   COMPLAINT
                                   ---------
     Plaintiff, Andrew Klotz, by his attorneys, alleges upon information and
belief, except as to paragraph 1 which is alleged upon personal knowledge, as
follows:
                                  THE PARTIES
                                  -----------

     1.   Plaintiff Andrew Klotz is the owner of shares of the common stock of
Cyprus Amax Minerals Company ("Cyprus" or the "Company") and has been the owner
of such shares continuously since prior to the wrongs complained of herein.

     2.   Cyprus is a corporation duly existing and organized under the laws of
the State of Delaware, with its principal executive offices located at 9100 East
Mineral Circle, Englewood, Colorado. Cyprus is a diversified mining company
engaged in the exploration for and extraction, processing, and marketing of
<PAGE>

mineral resources.

     3.   Defendant Milton H. Ward is and at all times relevant hereto has been
President, Chairman of the Board, and Chief Executive Officer of Cyprus.

     4.   Defendants Linda G. Alvardo, George S. Ansell, Rockwell A. Schnabel,
William C. Bousquette, Thomas V. Falkie, Ann Maynard Gray, Theodore M. Solso,
John H. Stookey, Billie B. Turner, Allen Born, and James A. Todd, Jr. are and at
all times relevant hereto have been directors of Cyprus.

     5.   The defendants referred to in paragraphs 3 and 4 are collectively
referred to herein as the "Individual Defendants."

     6.   By reason of the defendants' positions with the Company as officers
and/or directors, they are in a fiduciary relationship with plaintiff and the
other public stockholders of Cyprus, and owe plaintiff and the other members of
the class the highest obligations of good faith, fair dealing, due care,
loyalty, and full and candid disclosure.

                            CLASS ACTION ALLEGATIONS
                            ------------------------

     7.   Plaintiff brings this action on his own behalf and as a class action,
pursuant to Rule 23 of the Rules of the Court of Chancery, on behalf of the
public holders of Cyprus common stock (the "Class"). Excluded from the Class are
defendants herein and any person, firm, trust, corporation or other entity
related to or affiliated with any of the defendants.

     8.   This action is properly maintainable as a class action.

     9.   The Class is so numerous that joinder of all members is impracticable.
As of August 24, 1999, there were approximately 90.5 million shares of Cyprus
common stock outstanding owned by hundreds, if not thousands of members of the
Class.

     10.  There are questions of law and fact which are common to the Class and
which predominate over questions affecting any individual Class members,
including the following:

          (a) whether defendants have breached their fiduciary and other common
law duties owed
<PAGE>

by them to plaintiff and the other members of the Class; and

          (b) whether the Class is entitled to injunctive relief or damages as a
result of the wrongful conduct committed by defendants.

     11.  Plaintiff is committed to prosecuting this action and has retained
competent counsel experienced in litigation of this nature.  Plaintiff's claims
are typical of the claims of the other members of the Class and plaintiff has
the same interests as the other members of the Class.  Accordingly, plaintiff is
an adequate representative of the Class and will fairly and adequately protect
the interests of the Class.

     12.  The prosecution of separate actions by individual members of the Class
would create the risk of inconsistent or varying adjudications with respect to
individual members of the Class which would establish incompatible standards of
conduct for defendants, or adjudications with respect to individual members of
the Class which would as a practical matter be dispositive of the interests of
the other members not parties to the adjudications or substantially impair or
impede their ability to protect their interests.

     13.  Defendants have acted on grounds generally applicable to the Class
with respect to the matters complained of herein, thereby making appropriate the
relief sought herein with respect to the Class as a whole.

                            SUBSTANTIVE ALLEGATIONS
                            -----------------------

     14.  On July 15, 1999, Cyprus and ASARCO Incorporated ("Asarco") announced
that they had signed a definitive merger agreement (the "Merger Agreement")
under which the companies would combine in a merger-of-equals transaction.

     15.  The new entity would be named Asarco Cyprus Incorporated ("ACI").
Under the terms of the Merger Agreement, Cyprus shareholders would receive 0.765
shares of ACI common stock for each share of Cyprus stock held. Asarco
shareholders would receive one share of ACI common stock for each share of
Asarco common stock held.

     16.  ACI's Board of directors would have 16 members, eight from Asarco and
eight members
<PAGE>

from Cyprus. Defendant Ward would serve as co-CEO and Chairman of ACI through
April 2000 and remain Chairman of ACI until his retirement.

     17.  The exchange ratio for which the Merger Agreement provides offers no
premium to the pre-existing market value of the Cyprus Amax stock. Although the
Merger agreement permits the Cyprus Amax Board to terminate the Merger if in the
exercise of their fiduciary duties they determine that another proposal offers a
superior transaction, the Merger agreement expressly precludes both ASARCO and
Cyprus Amax from entering into discussions with any third party (the "No-Talk
Provision").

     18.  Shortly after the Merger Agreement was signed, Phelps Dodge
Corporation ("Phelps") contacted Cyprus to discuss an alternative proposal which
would involve the combination of Phelps, Cyprus, and Asarco.

     19.  Despite three separate requests for discussion, defendants completely
refused to negotiate with Phelps. On August 20, 1999, Cyprus unilaterally
announced Phelps' interest in a three-way combination and its rejection of the
Phelps' offer in favor of its previous agreement with Asarco.

     20.  Also on August 20, 1999, Cyprus finally announced the terms of its
Merger Agreement with Asarco. The record date to vote on the Merger was set for
August 25, 1999.  By setting this record date so close to the rejection of
Phelps' bid and the announced details of the Asarco merger, Cyprus has
effectively precluded any significant trading in the market on an informed basis
before the determination of shareholders eligible to vote at the Company's
meeting.

     21.  Frustrated with Cyprus' actions, Phelps decided to publicly announce a
"sweetened" proposal for an alternative combination. Phelps announced that it
was willing to acquire Cyprus for 0.3135 shares of Phelps' common stock,
representing a premium of 29% for Cyprus shareholders. The Merger Agreement with
Asarco does not give Cyprus shareholders any premium. In addition, Phelps
disclosed that it would continue to distribute its $2.00 per share dividend, a
dividend 4.1 times greater than the dividend proposed to Cyprus shareholders
under the terms of the Asarco Merger Agreement.  Phelps stated that it would
prefer a three-way
<PAGE>

combination, but would be willing to purchase Cyprus independently.

     22.  The defendants were and are under a duty:

          (a) to act in the interests of Class members;

          (b)  to maximize shareholder value;

          (c) to undertake an appropriate evaluation of the Company's net worth
as a merger/acquisition candidate;

          (d) to act in accordance with their fundamental duties of due care and
loyalty; and

          (e) to insure that they and Cyprus Amax's shareholders have available
all information material to decisions on a major corporate transaction,
including the highest consideration each potential acquiror is prepared to offer
and the terms and conditions of each offeror's proposal.

     23.  By the acts, transactions and courses of conduct alleged herein,
defendants breached their fiduciary duties to plaintiff and the other members of
the Class, and are attempting unfairly to deprive plaintiff and other members of
the Class of the fair value of their investment in Cyprus.

     24.  The Individual Defendants have refused to enter into any negotiations
with Phelps in an attempt to entrench themselves in their positions with the
Company and to protect their substantial salaries and prestigious positions.
Defendants' placement of their own interests ahead of the interests of Cyprus
shareholders is in direct violation of their fiduciary duties.

     25.  By agreeing to the No-Talk Provision, the Individual Defendants
breached their fiduciary duties. They contracted away their ability to inform
themselves adequately to make judgments in the best interests of all Cyprus Amax
shareholders, and to obtain information to convey to Cyprus Amax shareholders to
enable them to exercise an informed franchise on the Merger.

     26.  The Individual Defendants have also manipulated the setting of a
record date for the shareholders' meeting on the Merger in order to improve the
<PAGE>

prospects for shareholder approval of the Merger.

     27.  As a result of the actions of defendants, plaintiff and the other
members of the Class will be prevented from obtaining appropriate consideration
for their shares of Cyprus common stock.

     28.  Unless enjoined by this Court, the defendants will continue to breach
their fiduciary duties and prevent the Class from receiving its fair share of
Cyprus' valuable assets and businesses.

     29.  Plaintiff and the Class have no adequate remedy at law.

     WHEREFORE, plaintiff demands judgment and preliminary and permanent relief,
including injunctive relief, in its favor and in favor of the Class and against
defendants as follows:

     1.   Declaring that this action is properly maintainable as a class action;

     2.   Directing the Individual Defendants to adequately ensure that no
conflicts of interest exist between the Individual Defendants and their
fiduciary obligation to maximize shareholder value or, if such conflicts exist,
to ensure that all conflicts are resolved in the best interests of Cyprus'
public stockholders;

     3.   Entering an order or orders requiring defendants to take the steps set
forth hereinabove and declaring the No-Talk Provision void and non-enforceable;

     4.   Enjoining defendants from consummating the merger with Asarco, or a
business combination with any other third party, unless and until the Company
adopts and implements a procedure or process, such as an auction, to obtain the
highest possible price for the Company;

     5.   Awarding plaintiff the costs and disbursements of this action,
including reasonable attorneys' and experts' fees; and
     6.   Granting such other and further relief as this Court may deem just and
proper.

                              ROSENTHAL, MONHAIT, GROSS
                                    & GODDESS, P.A.



                              By:
                                 -------------------------------------
                                    Suite 1401, Mellon Bank Center
                                    P.O. Box 1070
                                    Wilmington, DE 19899
                                    (302) 656-4433
                                    Attorneys for Plaintiff

OF COUNSEL:

SCHIFFRIN & BARROWAY, LLP
Marc A. Topaz
Gregory M. Castaldo
Three Bala Plaza East
Suite 400
Bala Cynwyd, PA 19004
(610) 667-7706



August 24, 1999

<PAGE>
                                                                   EXHIBIT 99.15

               IN THE COURT OF CHANCERY OF THE STATE OF DELAWARE
                         IN AND FOR NEW CASTLE COUNTY

- -------------------------------------  x
MAX GRILL,                             :
                                       :  Civil Action No.
              Plaintiff,               :  17396NC
                                       :
       -against-                       :
                                       :
JOHN HOYT STOOKEY, THEODORE M.         :
 SOLSO, ANN MAYNARD GRAY,              :
 ROCKWELL A. SCHNABEL, BILLIE B.       :
 TURNER, MILTON H. WARD, WILLIAM C.    :
 BOUSQUETTE, LINDA G. ALVARDO,         :
 THOMAS V. FALKIE, GEORGE S. ANSELL    :
 and CYPRUS AMAX MINERALS COMPANY,     :
                                       :
              Defendants.              :
- -------------------------------------  x

                             CLASS ACTION COMPLAINT
                             ----------------------

          Plaintiff, by his attorneys, alleges upon information and belief,
except as to paragraph 1 which plaintiff alleges upon knowledge, as follows:

          1.   Plaintiff Max Grill is a stockholder of defendant Cyprus Amax
Minerals Company ("Cyprus Amax" or the "Company"), and has been a Cyprus Amax
shareholder at all times relevant hereto.

          2.   Defendant Cyprus Amax is a Delaware corporation with its
principal executive offices located at 9100 East Mineral Circle, Englewood,
Colorado 80112.  Cyprus
<PAGE>

Amax produces copper, coal, and molybdenum, and explores
for minerals worldwide.  As of August 3, 1999, there were over 90 million shares
of Cyprus Amax common stock outstanding.

          3.   The individual defendants have constituted the Board of Directors
of Cyprus Amax at all times relevant hereto.

          4.   In addition to serving as a Cyprus Amax director, individual
defendant Milton H. Ward ("Ward") has been Chairman of the Board, President and
Chief Executive Officer of Cyprus Amax since 1992.  Those positions constitute
his principal occupation.  In calendar 1998, Ward received a salary of
$1,133,524, a bonus of $975,000 and long-term compensation awards valued in
excess of $1.5 million.

          5.   The Individual Defendants, as officers and/or directors of Cyprus
Amax, have a fiduciary relationship and responsibility to plaintiff and the
other common public stockholders of Cyprus Amax, and owe to plaintiff and the
other Cyprus Amax stockholders the highest obligations of good faith, loyalty,
fair dealing, due care and candor.

                            CLASS ACTION ALLEGATIONS
                            ------------------------

          6.   Plaintiff brings this action on his own behalf and as a class
action, pursuant to Rule 23 of the Rules of the Court of Chancery, on behalf of
all common stockholders of Cyprus Amax or their successors in interest, who are
being and will be harmed by defendants' actions described below (the "Class").
Excluded from the Class are defendants herein and any person, firm, trust,
corporation, or other entity related to or affiliated with any of defendants.

          7.   This action is properly maintainable as a class action because:

                                       2
<PAGE>

              a.    The Class is so numerous that joinder of all members is
impractica ble.  As of August 3, 1999, there were more than 90 million Cyprus
Amax shares outstanding, held by hundreds, if not thousands, of stockholders
located throughout the United States.

              b.    There are questions of law and fact which are common to the
Class including:  whether the Individual Defendants have breached fiduciary
duties to Cyprus Amax's public stockholders and whether plaintiff and the other
Class members would be  irreparably damaged if the defendants are not enjoined
in the manner described below.

              c.    Plaintiff is committed to prosecuting this action and has
retained competent counsel experienced in litigation of this nature.  The claims
of plaintiff are typical of the claims of the other members of the Class and
plaintiff has the same interests as the other members of the Class.
Accordingly, plaintiff is an adequate representative of the Class and will
fairly and adequately protect the interests of the Class.

              d.    The prosecution of separate actions by individual members of
the Class would create the risk of inconsistent or varying adjudications with
respect to individual members of the Class which would establish incompatible
standards of conduct for defendants, or adjudications with respect to
individual members of the Class which would as a practical matter be dispositive
of the interests of the other members not parties to the adjudications or
substantially impair or impede their ability to protect their interests.

                                       3
<PAGE>

               e.   The defendants have acted, or refused to act, on grounds
generally applicable to, and causing injury to the Class and, therefore,
preliminary and final injunctive relief on behalf of the Class as a whole is
appropriate.

                                CLAIM FOR RELIEF
                                ----------------

          8.   On July 15, 1999, Cyprus Amax and ASARCO Incorporated ("Asarco")
announced an agreement for the combination of the two companies in a merger-of-
equals transaction (the "Merger").  The new company, to be named Asarco Cyprus
Incorporated, would be the largest publicly traded copper company in the world.
Under the terms of the transaction, Cyprus Amax common shareholders would
receive 0.765 shares of Asarco Cyprus common stock for each share of Cyprus Amax
common stock they own and ASARCO shareholders would receive one share of Asarco
Cyprus common stock for each share of ASARCO common stock they own.  It was
anticipated that approximately 109 million shares of Asarco Cyprus common stock
will be issued, of which Cyprus Amax shareholders will own 69.2 million shares
or 63.5 percent following the Merger.

          9.   The Merger agreement provides that Asarco Cyprus would have a 16-
person board with eight members nominated by Cyprus Amax and eight by ASARCO.
Ward would be the co-Chief Executive Officer and Chairman of the combined
entity.

          10.  The foregoing exchange ratio offers no premium to the pre-
existing market value of the Cyprus Amax stock.  Although the Merger agreement
permits the Cyprus Amax Board to terminate the Merger if in the exercise of
their fiduciary duties they determined that

                                       4
<PAGE>

another proposal offered a superior transaction, the Merger agreement expressly
precludes both ASARCO and Cyprus Amax from entering into discussions with any
third party (the "No-Talk Provision").

          11.  Some time between July 15, 1999 and August 19, 1999, Phelps Dodge
Corporation ("Phelps Dodge") made an unsolicited proposal to acquire both Cyprus
Amax and ASARCO.  Phelps Dodge offered .2874 Phelps Dodge share for each Cyprus
Amax share, and .3756 Phelps Dodge share for each ASARCO share.

          12.  The exchange ratios contemplated by Phelps Dodge's initial offer
represented a premium to the trading price of Cyprus Amax common stock.  Based
on Phelps Dodge's closing price of $58-9/16 on August 19, 1999, its bid valued
Cyprus Amax at $16.83 a share -- over $2 per share or approximately 16% more
than the $14.50 closing price of Cyprus Amax common stock on August 19, 1999.
In addition, the proposal would result in a dividend increase for Cyprus Amax
shareholders to 4.1 times the dividend contemplated to be paid by Asarco Cyprus.
Moreover, over the past ten years, Phelps Dodge's total return has been 161% as
compared to negative 26% for Cyprus Amax and negative 20% for ASARCO.  A
combination of the three companies would create a larger, more efficient,
financially stronger company with a stronger balance sheet and enhanced earnings
and cash flow.

          13.  Notwithstanding that the Phelps Dodges offer represented a far
better value for Cyprus Amax shareholders, the Individual Defendants spurned at
least three efforts by Phelps Dodge to discuss its offer and on August 19, 1999
voted to reject the  the Phelps Dodge

                                       5
<PAGE>

offer. Citing the No-Talk Provision, they refused to discuss the offer with
Phelps Dodge. Both the ASARCO and Cyprus Amax Boards reaffirmed their
determination to proceed with the Merger.

          14.  Phelps Dodge is known in the copper industry as an aggressive
cost cutter willing to terminate personnel in order to enhance revenues.
Accordingly, Ward's job could be in jeopardy if Phelps Dodge were to acquire
Cyprus Amax.  Moreover, Phelps Dodge would have no motivation to maintain the
Board structure contemplated by the Merger agreement.

          15.  ASARCO and Cyprus Amax did not publicly disclose the Phelps Dodge
offer or the text of the Merger agreement until August  20, 1999.  On that date,
Cyprus Amax and ASARCO also disclose that the record date for shareholders to
vote at the September 30 shareholders' meeting to consider the Merger would be
Wednesday, August 25, 1999.  Cyprus Amax had apparently sought and obtained a
waiver of the New York Stock Exchange minimum requirement for the time between
the announcement that a record date has been set and the record date itself.
Since it takes three days to clear transactions and only shareholders who own
shares on the record date can vote at a meeting, this late announcement of the
record date limits informed market trading and the ability of shareholders who
prefer the Phelps Dodge offer to purchase additional shares to vote against the
Merger.

          16.  On August 20, 1999, Phelps Dodge improved its offer to 0.4098
Phelps Dodge share for each ASARCO share and 0.3135 Phelps Dodge share for each
Cyprus Amax

                                       6
<PAGE>

share, valuing Cyprus Amax at $1.68 billion or $18.54 per share, a premium of
approximately 29% to the pre-existing market price.

          17.  Phelps Dodge also indicated that it would be willing to improve
upon its offer for Cyprus Amax dependent on discussions with the Company.

          18.  Phelps Dodge also announced that it is willing to acquire either
Cyprus Amax or ASARCO individually.

          19.  On August 22, 1999, Phelps Dodge announced its intention to
pursue a proxy contest against the Merger.

          20.  In light of the foregoing, the Individual Defendants fiduciary
obligations require them to:

               a.   undertake an appropriate evaluation of Cyprus Amax's worth
as a merger/acquisition candidate;

               b.   take all appropriate steps to enhance Cyprus Amax's value
and attractiveness as a merger/acquisition candidate;

               c.   take all appropriate steps to obtain the best available
transaction for Cyprus Amax, including but not limited to, engaging in serious
negotiations with Phelps Dodge or its representatives;

               d.   act independently so that the interests of Cyprus Amax's
public stockholders will be protected;

                                       7
<PAGE>

               e.   adequately ensure that no conflicts of interest exist
between defendants, own interests and their fiduciary obligation to maximize
stockholder value or, if such conflicts exist, to ensure that all conflicts be
resolved in the best interests of Cyprus Amax's public stockholders; and

               f.   insure that they and Cyprus Amax's shareholders have
available all information material to decisions on a major corporate
transaction, including the highest consideration each potential acquiror is
prepared to offer and the terms and conditions of each offeror's proposal.

          21.  By agreeing to the No-Talk Provision, the Individual Defendants
breached their fiduciary duties.  They contracted away their ability to inform
themselves adequately to make judgments in the best interests of all Cyprus Amax
shareholders, and to obtain information to convey to Cyprus Amax shareholders to
enable them to exercise an informed franchise on the Merger.

          22.  The Individual Defendants have also manipulated the setting of a
record date for the shareholders' meeting on the Merger in order to improve the
prospects for share  holder approval of the Merger.

          23.  As a result of defendants' breaches of fiduciary duties,
plaintiff and the other members of the Class have been and will be damaged in
that they will not be able to exercise fully informed voting judgment on the
Merger and will be prevented from obtaining the best available transaction.

                                       8
<PAGE>

          24.  Unless enjoined by this Court, defendants will continue to breach
their fiduciary duties owed to plaintiff and the other members of the Class, all
to the irreparable harm to the Class.

          25.  Plaintiff and the other members of the Class have no adequate
remedy at law.

          WHEREFORE, plaintiff prays for judgment and relief as follows:

          A.   Ordering that this action may be maintained as a class action and
certify ing plaintiff as Class representatives;

          B.   Declaring that defendants breached their fiduciary and other
duties to plaintiff and the other members of the Class;

          C.   Entering an order or orders requiring defendants to take the
steps set forth hereinabove and declaring the No-Talk Provision void and non-
enforceable;

          D.   Awarding compensatory damages against defendants individually and
severally in an amount to be determined;

          E.   Awarding plaintiff the costs and disbursements of this action,
including fees and experts' fees; and

          F.   Granting such other and further relief as the Court may deem just
and proper.

                                       9
<PAGE>

                              ROSENTHAL, MONHAIT, GROSS &
                                    GODDESS, P.A.


                              By:_____________________________________________
                              Suite 1401, Mellon Bank Center
                              919 North Market Street
                              P.O. Box 1070
                              Wilmington, Delaware 19899
                              (302) 656-4433
                              Attorneys for Plaintiff


OF COUNSEL:

STULL STULL & BRODY
6 East 45th Street
New York, NY 10017
(212) 687-7230


Dated:  August 26, 1999

                                       10

<PAGE>

                                                                   EXHIBIT 99.16

               IN THE COURT OF CHANCERY OF THE STATE OF DELAWARE

                          IN AND FOR NEW CASTLE COUNTY

PHELPS DODGE CORPORATION,                 )
a New York corporation and                )
CAV CORPORATION, a Delaware corporation,  )
                                          )
                       Plaintiff,
                                          )
               v.                         ) C.A. No. 17398-NC
                                          )
CYPRUS AMAX MINERALS                      )
COMPANY, a Delaware corporation,          ) COMPLAINT FOR DECLARATORY
Milton H. Ward, Linda G. Alvarado,        ) AND INJUNCTIVE RELIEF
George S. Ansell, Rockwell A. Schnabel,   )
Thomas V. Falkie, Ann Maynard Gray,       )
Theodore M. Solso, John H. Stookey,       )
Billie B. Turner and                      )
ASARCO INCORPORATED, a                    )
New Jersey corporation,                   )

                       Defendants.        )


          Plaintiffs Phelps Dodge Corporation and CAV Corporation (collectively,
"Phelps Dodge"), by and through their undersigned attorneys, upon knowledge as
to themselves and their own acts and upon information and belief as to all other
matters, allege as follows:

                              NATURE OF THE ACTION
                              --------------------

          1.   On July 15, 1999, ASARCO Incorporated ("ASARCO") and Cyprus Amax
Minerals Company ("Cyprus Amax") announced a non-premium proposed merger (the
"ASARCO Cyprus Merger").  Their merger agreement (the "Merger Agreement") --
which was not publicly disclosed until August 20, more than a month after the
announcement -- is illegal. It purports to prohibit directors of a Delaware
corporation from receiving, gathering, providing or
<PAGE>

exchanging information concerning any merger or acquisition proposal by Phelps
                                  ---
Dodge (or any other interested party) until the stockholders of both companies
vote on the ASARCO Cyprus Merger. It cannot be terminated to pursue a clearly
superior transaction, such as the three-way combination proposed by Phelps
Dodge. It imposes draconian financial penalties -- in excess of 6% of the market
capitalization of ASARCO -- if the deal is not consummated according to
management's plan. In short, this Merger Agreement is dead on arrival, a fact
that likely explains why the companies secreted it so long.

          2.   The Merger Agreement's "No Solicitation" provisions -- in
reality, "no-see, no-hear, no-talk" provisions -- are particularly outrageous.
The directors of Cyprus Amax and ASARCO have contracted away their duty of care;
they are not permitted even to learn about, let alone evaluate meaningfully, any
alternative proposal -- no matter how compelling, financially rewarding and
industrially sound.  And, while the Merger Agreement makes the gracious
concession of supposedly permitting the directors to change or withdraw their
recom  mendation of the ASARCO Cyprus Merger, it renders that right meaningless.
A director cannot make an informed decision about the merits of a proposed
           ------
transaction -- or, equally important, the relative merits of two strategic
alternatives -- without the ability to communicate freely with interested
parties.  This Court has never sanctioned what this Merger Agreement purports to
do: require directors to keep their eyes wide shut.
    -------

          3.   Apparently not content to hide behind the Merger Agreement's
lock-up provisions, ASARCO and Cyprus Amax have engaged in a persistent pattern
of conduct that reeks of entrenchment and undue defensiveness.  Among other
things, they have:

                                       2
<PAGE>

 .    attempted to rig the proxy process -- Blasius Indus., Inc. v. Atlas
                                           ------------------------------
     Corp., 564 A.2d 651 (Del. Ch. 1989), be damned -- by setting meeting and
     -----
     record dates designed to favor unfairly management's preferred transaction;

 .    opposed Phelps Dodge's lawful requests for stockholder list
     information to allow Phelps Dodge to communicate directly -- and on a level
     playing field -- with the companies' owners;

 .    granted senior management compensation and benefits packages that not
     only lavishly "reward" entrenchment, but unfairly shift value from
     stockholders to management;

 .    included in the Merger Agreement provisions that virtually guarantee
     the jobs of senior management through 2002; and

 .    stood -- and hid -- behind the Merger Agreement's unlawful
     restrictions, refus ing to meet, discuss or exchange information with
     Phelps Dodge concerning its proposal.

     This is not the conduct of responsible boards of directors.

          4.   Cyprus Amax's directors have abdicated their responsibilities.
Their actions to date should be enjoined, and they should be required to act in
accordance with law going forward.

                                  THE PARTIES
                                  -----------

          5.   Plaintiff Phelps Dodge is a New York corporation with its
principal executive offices in Phoenix, Arizona.  Phelps Dodge is one of the
world's leading producers of copper and has achieved its premier status through
safe, efficient and environmentally sound

                                       3
<PAGE>

production of low-cost, high-quality metals and minerals. Phelps Dodge
beneficially owns common stock of both ASARCO and Cyprus Amax.

          6.   Plaintiff CAV Corporation is a Delaware corporation directly
owned by Phelps Dodge.  CAV Corporation owns 100 shares of common stock of
Cyprus Amax.

          7.   Defendant Cyprus Amax is a Delaware corporation with its
principal place of business in Englewood, Colorado.  Cyprus Amax is a
diversified mining company engaged in the exploration for and extraction,
processing and marketing of mineral resources, including copper, molybdenum,
coal and gold.

          8.   Defendant Milton H. Ward ("Ward") has been Chairman, Chief
Executive Officer and President of Defendant Cyprus Amax since 1992.  He is a
director of Cyprus Amax and owes fiduciary duties to Cyprus Amax and its
shareholders.

          9.   Defendants Linda G. Alvarado, George S. Ansell, Rockwell A.
Schnabel, Thomas V. Falkie, Ann Maynard Gray, Theodore M. Solso, John H. Stookey
and Billie B. Turner (the "Director Defendants") are current directors of Cyprus
Amax and all owe fiduciary duties to Cyprus Amex and its shareholders.

          10.  Defendant ASARCO is a New Jersey corporation with its principal
place of business in New York, New York.  ASARCO is a leading producer of
copper, specialty chemicals and aggregates, and is registered to do business in
Delaware.  The Company's copper business includes integrated mining, smelting
and refining operations in North America and Peru.

                                       4
<PAGE>

          11.  Phelps Dodge has commenced a parallel action alleging, inter
                                                                      -----
alia, breaches of fiduciary duty against ASARCO, its Chairman and Chief
- ----
Executive Officer, Francis R. McAllister ("McAllister"), and its directors in
the Superior Court of the State of New Jersey.

                               FACTUAL BACKGROUND
                               ------------------

I.   The Proposed Merger of ASARCO and Cyprus Amax
     ---------------------------------------------

          12.  On July 15, 1999, ASARCO and Cyprus Amax announced a so-called
"merger of equals" under which ASARCO shareholders are to receive one share of
stock in the merged company and Cyprus Amax shareholders are to receive 0.765
shares per share of Cyprus Amax stock they currently hold.  The proposed new
company, ASARCO Cyprus Incorporated ("ASARCO Cyprus"), would have its corporate
headquarters in New York City and its opera  tions headquarters in Tempe,
Arizona.  Cyprus Amax shareholders would receive no premium by way of the
transaction,

          13.  ASARCO Cyprus would have a sixteen person board of directors with
eight members nominated by ASARCO and eight by Cyprus Amax.  Ward, Cyprus Amax's
Chairman, President and Chief Executive Officer, and McAllister, ASARCO's
Chairman and Chief Executive Officer, would serve as Co-Chief Executive Officers
and directors of ASARCO Cyprus.

          14.  The market reaction to the proposed no-premium merger was hardly
inspired, pushing both companies' stock prices down.  On July 14, 1999, the
common stock of Cyprus Amax and ASARCO was trading at highs of 14-1/2 and 19-
1/2, respectively.  On July 19, 1999, the common stock of Cyprus Amex and ASARCO
was trading at highs of 14 and 19-1/16, respectively.  Although the ASARCO
Cyprus Merger initially included projected cash

                                       5
<PAGE>

synergies of $100 million per year, plus reduced depreciation of $50 million
annually due to the write-down of certain assets (this estimate was later
increased to $200 million), the market has not recognized any incremental value
in the current share prices of either company. The proposed merger has also been
criticized for its lack of a plan to integrate operations, and its lack of asset
rationalization.

          15.  The details of the Merger Agreement were not finally disclosed to
the public until August 20, 1999, over a month after the merger was announced
and only after ASARCO and Cyprus Amax publicized that they were rejecting a
three-way merger proposed by Phelps Dodge.  By hiding the self-serving
restrictive provisions of their Merger Agreement from public view, the directors
of ASARCO and Cyprus Amax have attempted to shield their true objective of
entrenching their positions even at the expense of a better proposal for their
shareholders.

II.  The CEOS of ASARCO and Cyprus Amex Refuse to Talk with Phelps Dodge
     -------------------------------------------------------------------

          16.  The time-way merger proposal offered by Phelps Dodge was made on
August 10, 1999, when Douglas Yearley, CEO of Phelps Dodge ("Yearley"),
telephoned Cyprus Amax's Ward and ASARCO's McAllister, who were meeting together
in New York.

          17.  This proposal was immediately -- and summarily -- rejected.  At
approximately 6:45 that evening, a few hours after the proposal was made,
McAllister and Ward forwarded a short letter to Yearley which stated simply that
pursuant to the terms of the Merger Agreement, Ward and McAllister felt they
"were not at liberty to have a discussion of the nature you were suggesting
today."  Exhibit 1.  A copy of the Merger Agreement was not provided to

                                       6
<PAGE>

Phelps Dodge, and thus it was unclear at that stage why the CEOs of ASARCO and
Cyprus Amax would not even entertain discussions with Phelps Dodge.

          18.  On August 11, 1999, Yearley and Phelps Dodge President, J. Steven
Whisler, again requested a meeting with Cyprus Amax and ASARCO, in a letter to
Ward and McAllister laying out the basic terms of the proposed merger.  Exhibit
2.  The letter explained "that a three-way combination . . . would create
superior shareholder value for the shareholders of ASARCO and Cyprus Amax."
Under the proposed merger, "all of the outstanding common stock of both ASARCO
and Cyprus Amax [would] be exchanged for Phelps Dodge common stock" and "[t]he
transaction would be tax free" to ASARCO and Cyprus Amax shareholders.

          19.  Specifically, the August 11 letter stated that Phelps Dodge was
prepared to offer shareholders of ASARCO and Cyprus Amax an exchange ratio of
0.3756 Phelps Dodge common shares for each ASARCO common share, and 0.2874
Phelps Dodge common shams for each Cyprus Amax common share.  These exchange
ratios represented a premium of approxi  mately 25%, based on the then-market
prices for ASARCO and Cyprus Amax shares.  Because the benefits to the
shareholders of ASARCO and Cyprus Amax of a three-way merger with Phelps Dodge
are significantly greater than the currently proposed ASARCO Cyprus Merger,
Phelps Dodge once again urged McAllister and Ward to consider the proposal.  The
CEOs of ASARCO and Cyprus Amax did not wait long, however, before refusing to
consider the proposed three-way merger.

          20.  On the morning of August 12,1999, Yearley received a telephone
call frorn McAllister and Ward again refusing to discuss Phelps Dodge's
proposal.  Once again, the

                                       7
<PAGE>

CEOs of ASARCO and Cyprus Amax did not explain what prevented them from even
talking to Phelps Dodge.

          21.  Ward and McAllister's stubborn refusals to communicate with
Phelps Dodge demonstrated that there would be no serious consideration of a
three-way merger of Phelps Dodge, Cyprus Amax and ASARCO.  Their conduct
strongly suggests their true motive is to entrench and perpetuate their current
positions and lucrative compensation packages through the creation of ASARCO
Cyprus, while abandoning their duties to act in the best interests of their
companies and shareholders by exploring a merger with Phelps Dodge.  In short,
the CEOs of ASARCO and Cyprus Amax are depriving the stockholders of their
companies of the opportunity to consider a premium proposal from which the
shareholders stand to benefit significantly.

III. The Superiority of the Phelps Dodge Proposal
     --------------------------------------------

          22.  An analysis of the three-way merger proposed by Phelps Dodge
               demon strates compelling benefits to all three companies. These
               include:

               (a) a significant premium, of approximately 30% as of the August
                   20, 1999 proposal date, and a quadrupling of dividends to
                   sharehold ers;

               (b) the increased ability of the combined company to integrate
                   south west U.S. mining operations, administrative functions
                   in Chile and Peru and worldwide exploration and development
                   activities;

                                       8
<PAGE>

               (c) the increased financial strength of the combined company and
                   its ability to create a world-class portfolio of cost-
                   competitive mining assets;

               (d) a formidable management team, at both the operating and corpo
                   rate levels, with solid credibility in the marketplace;

               (e) the capacity to eliminate substantial overhead, exploration,
                   pur chasing and other expenses through consolidation;

               (f) tremendous operating leverage, together with sufficient
                   diversity in other businesses to mitigate cyclical downturns;

               (g) the ability of the combined company to reduce capital expendi
                   tures;

               (h) a strong liquid balance sheet, with excellent access to
                   capital; and

               (i) the combination of all of these factors, creating greater
                   shareholder value on an ongoing basis for the shareholders of
                   all three companies.

          23.  In addition, the three-way transaction proposed by Phelps Dodge
would bring significant benefits to shareholders of all three corporations.
Specifically, a three-way merger would lead to cost savings well in excess of
the amounts that could be achieved through the pending ASARCO Cyprus Merger.
Phelps Dodge estimates that the annual cash cost savings would be at least $200
million, with additional non-cash savings of approximately $65 million per year
from lower depreciation charges.

                                       9
<PAGE>

          24.  Over the past few years, Phelps Dodge stock has significantly
outper formed the stock of both ASARCO and Cyprus Amax.  Furthermore, Phelps
Dodge stock has yielded a total return of 161% over the past ten years, compared
to total returns of negative 20% for ASARCO stock and negative 26% for Cyprus
Amax stock.

          25.  Moreover, the benefits of the Phelps Dodge proposal remain
superior to the terms of the ASARCO Cyprus Merger regardless of whether both or
only one of ASARCO or Cyprus Amax accept the proposal.  For shareholders of
Cyprus Amax, a significant premium is still better than the no-premium ASARCO
Cyprus Amax alternative.  The consummation of the ASARCO Cyprus Merger, however,
would prelude this possibility.

          26.  The metals and mining industry is undergoing a phase of rapid
consolida tion.  In view of this dynamic environment and the numerous compelling
benefits to ASARCO, Cyprus Amax and Phelps Dodge, a summary rejection of the
Phelps Dodge proposal is as incomprehensible as it is unjustifiable.

IV.  The Boards of Directors' Public Rejection of the Phelps Dodge Proposal
     ----------------------------------------------------------------------

          27.  In the face of the adamant refusal by the CEOs of both ASARCO and
Cyprus Amax to give any consideration to Phelps Dodge's proposal, Phelps Dodge
sent letters on August 12, 1999 to the boards of directors of both companies,
outlining the proposed three-way transaction and the ensuing benefits to all
three companies and their shareholders.  Exhibit 3.  In these letters, Phelps
Dodge also indicated that its proposal with respect to Cyprus Amax was not
contingent on ASARCO's acceptance of the proposal and vice versa.

          28.  On August 20,1999, Cyprus Amax and ASARCO publicly rejected
Phelps Dodge's "unsolicited proposal."  In a joint news release (the "August 20
News Release"), Cyprus

                                       10
<PAGE>

Amax and ASARCO stated that each of their respective boards had met separately
to consider the proposal, and determined that "pursuing the ASARCO Cyprus Merger
was in [the] best interests of ASARCO and Cyprus Amax stockholders,
respectively. . . ." Cyprus Amax and ASARCO's joint news release stated only
that "Phelps Dodge's proposal is subject to a number of contingencies."
Exhibit 4.

          29.  The boards of Cyprus Amax and ASARCO refrained from stating the
basis for their decision to reject the Phelps Dodge proposal and did not
identify the "contingen  cies" they were referring in the August 20 News
Release.  Most certainly, they made no effort to discuss and negotiate any such
"contingencies."  Consequently, Defendants unjustifiably continue to deprive
Cyprus Amax stockholders of the opportunity to decide for themselves which
transaction is in fact in their best interests.

          30.  That same day, following ASARCO and Cyprus Amax's public
rejection of the Phelps Dodge proposal, Phelps Dodge outlined a revised proposal
even more beneficial to the shareholders of ASARCO and Cyprus Amax.  Each share
of ASARCO common stock would be converted into 0.4098 Phelps Dodge common
shares, representing a significant premium of approximately 30% to ASARCO
shareholders, based upon share prices of ASARCO and Phelps Dodge before trading
was halted that morning.  Each share of Cyprus Amax common stock would be
converted into 0.3135 Phelps Dodge common shares, representing an approximate
29% premium for Cyprus Amax shareholders, based upon share prices of Cyprus Amax
and Phelps Dodge before trading was halted that morning.  Exhibit 5.

                                       11
<PAGE>

          31.  The market and financial community responded overwhelmingly
favorably to the Phelps Dodge proposal, and the shares of all three companies
rose during trading on August 20.

          32.  On August 24, 1999, The Wall Street Journal reported that Cyprus
Amax shareholders were eager to embrace a deal with Phelps Dodge.  One money
manager with a big stake in Cyprus Amax commented: "[l]ong term, ASARCO Cyprus
is a good combination, but a combination of Phelps, ASARCO and Cyprus is a great
combination."

          33.  Even Cyprus Amax commented to Bloomberg News that it was prepared
to convene a board meeting to study the increased offer.  Gerald Malys, Chief
Financial Officer of Cyprus Amax, informed Bloomberg that Cyprus Amax and ASARCO
had rejected the initial offer because it did not offer enough of a premium.  He
added that Cyprus Amax and ASARCO need to begin conversations about the Phelps
Dodge proposal, stating: "I don't think there is any choice in this game but to
listen to what goes on.  We need to look at it, they (ASARCO) need to look at
it, we need to talk to each other." Yet the Merger Agreement and the continued
resistance of McAllister, Ward and the boards of directors of ASARCO and Cyprus
Amax remain road  blocks to any such discussions -- and thus the proper
discharge of the boards' fiduciary duties.

V.   The Unreasonable Terms of the ASARCO Cyprus Merger Agreement
     ------------------------------------------------------------

          34.  Until August 20, 1999, the provisions of the Merger Agreement
between ASARCO and Cyprus Amax were hidden from their respective shareholders
and the public.  On that day, ASARCO and Cyprus Amax filed an S-4 Registration
Statement, attaching the Merger Agreement.  The Merger Agreement contains a
number of noteworthy "no-see, no-hear, no-talk" provisions that reflect patent
violations of the fiduciary duties owed by the boards of ASARCO

                                       12
<PAGE>

and Cyprus Amax. These provisions are transparent efforts to protect a non-
premiurn deal and to entrench management at the expense of shareholders.

          35.  Sections 5.10(a)(i) and 5.11(a)(i) of the Merger Agreement
restrain both parties, their directors, officers, employees and representatives
from directly or indirectly soliciting, initiating or encouraging (whether by
furnishing information or otherwise), or taking any other action designed to
facilitate any inquiries or the making of any proposal which constitutes or
reasonably could be expected to lead to any "Takeover Proposal."  A Takeover
Proposal is defined as any inquiry, proposal or offer, or any improvement,
restatement, amend  ment, renewal or reiteration of any such inquiry, proposal
or offer, from any person relating to any direct or indirect acquisition of a
business or equity securities of a party or any of its subsidiaries.

          36.  More egregiously, Sections 5.10(a)(ii) and 5.11(a)(ii) restrain
both parties, their directors, officers, employees, and representatives from
"participat[ing] in any discussions or negotiations regarding any [alternative]
Takeover Proposal."  Thus the Merger Agreement, purports to restrain the Cyprus
Amax board from discussing an unsolicited bid that is demonstra  bly superior to
the ASARCO Cyprus Merger.

          37.  Sections 5.10(b) and 5.11(b) further prohibit the boards of
directors of either company from withdrawing or modifying their approval or
recommendation of the ASARCO Cyprus Merger or the Merger Agreement.  The boards
may withdraw their recommendation to approve the merger only if they determine
in good faith, based on the advice of outside counsel, that a failure to do so
would constitute a breach of fiduciary duties owed by the respective boards to
their shareholders.

                                       13
<PAGE>

          38.  The sole power that the boards of ASARCO and Cyprus Amax have if
they determine that the ASARCO Cyprus Merger is not in fact in the best
interests of their shareholders is to recommend that the shareholders vote
against approving the merger.  The boards of directors of ASARCO and Cyprus Amax
do not have the power to terminate the Merger Agreement, nor may they stop the
vote from occurring.

          39.  Section 7.1(e) of the Merger Agreement permits ASARCO to
terminate the Merger Agreement if Cyprus Amax breaches Section 5.10 of the
Merger Agreement and Section 7.1(f) entities Cyprus Amax to terminate the Merger
Agreement if ASARCO is in breach of Section 5.11.  Under Sections 7.3(a)(ii) and
(b)(ii), if one party is entitled to terminate the Merger Agreement due to the
other party's breach of its obligation not to consider or negotiate other
proposals, the party who may terminate the Merger Agreement is entitled to $45
million (the "Termination Fee").  This is a grossly excessive termination fee
and, in the case of ASARCO, would amount to 6% of its equity value.

          40.  Under Sections 7.3(a)(i) and (b)(i) of the Merger Agreement,
Cyprus Amax or ASARCO could be subjected to this severe Termination Fee simply
because, in light of another Takeover Proposal, its shareholders voted against
the merger.  The only way in which the Termination Fee would not apply is if the
other party's shareholders also voted against the transaction, or if a
transaction pursuant to another Takeover Proposal was not consummated within 18
months.

          41.  As a consequence of these provisions, the boards of ASARCO and
Cyprus Amax are not allowed to consider superior offers or proposals and are
thereby restrained from acting in the best interests of their shareholders.  In
addition, the substantial Termination Fee acts

                                       14
<PAGE>

as a great disincentive for ASARCO and Cyprus Amax to negotiate with anyone but
each other -- and for shareholders to vote down the ASARCO Cyprus Amax Merger
Agreement. Although the Merger Agreement contains a provision which would allow
the boards of directors to withdraw their recommendations in order to fulfill
their fiduciary duties, it is impossible to see how this would occur if the
directors have been effectively precluded from obtaining information about and
considering in an infomed way any other offers or proposals.

          42.  In other words, the boards of ASARCO and Cyprus Amax have tied
their hands by agreeing not to solicit, encourage, or facilitate inquiries by
furnishing information, and not to participate in discussions with respect to
any other proposals.  It would be difficult, if not impossible, for them to make
any meaningful analysis of another proposal, such as Phelps Dodge's, let alone
to make any recommendation to the shareholders of Cyprus Amax other than to vote
in favor of the ASARCO Cyprus Merger.  The restrictions contained in the Merger
Agreement render it impossible for the boards of ASARCO and Cyprus Amax to make
an informed decision as to whether the ASARCO Cyprus Merger is, or is not, in
the best interests of their shareholders.  Ward and the Director Defendants of
Cyprus Amax should not be allowed to hide behind unreasonable provisions in the
Merger Agreement as justification for their refusal to allow their shareholders
to consider a for superior proposal.

          43.  Moreover, there is great financial incentive for the boards to
push ahead with their merger even at the expense of foregoing a better offer for
their shareholders.  The ASARCO Cyprus Form S-4 Registration Statement discloses
that "[e]ach of the employee  directors of ASARCO and Cyprus Amax may be
entitled to receive compensation if the business combination is completed."
Even if certain directors or senior officers are no longer employed

                                       15
<PAGE>

by the merged company, the Merger Agreement ensures that they are entitled to
large severance payments. In other words, directors and certain senior officers
of ASARCO and Cyprus Amax are rewarded whether they continue to be employed by
ASARCO Cyprus or not. The key, however, is that the Merger Agreement be
protected. If the Merger Agreement were to be terminated, the Director
Defendants would be entitled neither to continued employment by ASARCO Cyprus,
nor to the large severance payments.

          44.  Finally, Section 3.2 of the Merger Agreement futher demonstrates
the degree to which the directors of ASARCO and Cyprus Amax have sought to
entrench their positions.  It states that any change to the "key executive
officers" of ASARCO Cyprus prior to the stockholder meeting in the year 2002
requires the affirmative vote of at least three-quarters of the directors
constituting the entire board of directors of ASARCO Cyprus.  What this means is
that any change in management effectively requires the unanimous vote of the
twelve non  management directors.

VI.  ASARCO and Cyprus Amax Seek To Manipulate the Merger Vote
     ---------------------------------------------------------

          45.  The August 20 News Release stated that proxy materials relating
to the ASARCO Cyprus Merger would be mailed to shareholders of record on August
25, 1999, and that shareholder meetings have been set for September 30, 1999.
This timetable in fact contra  venes New York Stock Exchange Rules and was
designed to further the interests of the directors over the shareholders.

          46.  Section 4 of the New York Stock Exchange Rules regulates
shareholder meetings and proxies.  Section 401.02 explicitly provides that "[a]
minimum of ten days' notice is required prior to the record date ... established
 ... for determination of shareholders entitled to

                                       16
<PAGE>

vote at the meeting." ASARCO and Cyprus Amax gave only seven days' notice to the
NYSE of the August 25, 1999 record date, and did not make the record date public
until August 20, 1999.

          47.  Although the NYSE has opted not to take action against the
companies for their failure to observe this rule, expediting the record date
nonetheless demonstrates the haste with which ASARCO and Cyprus Amax are
proceeding in order to have their Merger approved by shareholders of both
companies.

          48.  This abbreviated schedule is no accident.  Ward, McAllister and
the boards of their companies seek to prevent more recent shareholders, who
would be aware of and therefore more likely to be in favor of the Phelps Dodge
proposal, from being able to vote on the ASARCO Cyprus Merger.  Defendants seek
to preempt the normal flow of trading and move  ment in the market of each
company's shares in order to ensure that the shareholders of record entitled to
vote upon the ASARCO Cyprus Mager are those who would be more likely to vote in
favor of it.

          49.  In addition, Phelps Dodge has sought shareholder lists and
related materials from Cyprus Amax and ASARCO.  As of the date of the filing of
this complaint, Cyprus Amax has not responded to a letter requesting the
materials dated August 23, 1999. ASARCO outright opposed an application Phelps
Dodge made to a New Jersey court seeking the information.  On August 26,1999,
the court ruled that documents and records must be turned over to Phelps Dodge
within forty-eight hours of the filing of its preliminary proxy materials.  In
light of the schedule ASARCO and Cyprus Amax have set for their shareholder
meetings, the delay and refusal to turn over shareholder lists is further
evidence of entrenchment.

VII. ASARCO and Cyprus Amax Issue an Ultimatum to Phelps Dodge
     ---------------------------------------------------------

                                       17
<PAGE>

          50.  Instead of agreeing to engage in real discussions with Phelps
Dodge, late in the afternoon of August 25,1999, ASARCO and Cyprus Amax issued a
joint ultimatum to Phelps Dodge in the form of a news release (the "August 25
News Release") and a letter from McAllister and Ward to Yearley.  Although the
August 25 News Release characterized the letter as a "willingness to negotiate,"
the terms demanded by the CEOs of ASARCO and Cyprus Amax are so unreasonable
that their negotiating posture is illusory and their entrenchment motive all the
more apparent.

          51.  The conditions, which no company would accept under similar
circum stances, include a requirement that the exchange ratio be increased to
0.4055 shares of Phelps Dodge common stock for each Cyprus Amax share, and
0.5300 Phelps Dodge shares for each ASARCO common share.  This demand amounts to
a premium of 70% to 80% of the companies' stock prices after the announcement of
                                                       -----
their no-premium merger but before the first public disclosure of Phelps Dodge's
                            ------
initial proposal.  Exhibit 6.  ASARCO and Cyprus Amax may now be feeling
pressure from their shareholders lo negotiate with Phelps Dodge, but making
unrea  sonable and unacceptable demands is nothing more than a ploy to deflect
shareholder attention while pursuing the ASARCO Cyprus Merger.

          52.  These outrageous demands amount to an unreasonable ultimatum to
Phelps Dodge and make other supposed examples of their willingness to negotiate
all the more illusory.  The August 25 News Release reports that during the first
ninety days after completion of the ASARCO Cyprus Merger, Ward and McAllister
will offer their shareholders the right to call a meeting to consider a "bona
fide" proposal.  During this time period, ASARCO and Cyprus Amax will allow for
a redemption of their shareholder rights plan and a waiver of any change of

                                       18
<PAGE>

control provisions in employment contracts.  In light of ASARCO's and Cyprus
Amax's conduct to date  and the delay -- and burden associated with such a
special meeting -- such "promises" ring hollow.  And the companies' statements
regarding employment contracts are so cryptic -- and even contradictory -- as to
be indecipherable.

          53.  Indeed, the August 25 News Release also announced an equally
illusory attempt at resuscitating shareholder interest in the ASARCO Cyprus
Merger itself.  ASARCO and Cyprus Amax now say they will improve the terms of
their deal by including a "special payment" of $5.00 per share to the
shareholders of the merged entity, to be paid as soon as possible after the
consummation of the merger.  This "special payment" does not alter the
fundamental economics of the ASARCO Cyprus Merger, nor does it offer the
stockholders of ASARCO and Cyprus Amax greater value than Phelps Dodge's premium
proposal.

          54.  Nothing in the August 25 News Release or the letter detracts from
one fundamental fact:  ASARCO and Cyprus Amax have not changed the unreasonable
terms of their Merger Agreement preventing any serious consideration of the
Phelps Dodge proposal.  If there were any doubt, ASARCO and Cyprus Amax
"emphasized" in the August 25 News Release that they were sticking to their
schedule of shareholder meetings for September 30, 1999 to vote on their merger.
In their letter to Yearley, Ward and McAllister made clear that "apart from this
communication, neither party has waived any of its legal or other rights, or
rights or obligations under our merger agreement."Exhibit 6.  In other words,
the "no-see, no-hear, no-talk" and other illegal provisions of the Merger
Agreement remain intact.

          55.  The August 25 letter shows that Ward and McAllister have put
their interests before the interests of the ASARCO and Cyprus Amax shareholders.
The letter states:

                                       19
<PAGE>

"[w]e strongly believe that the combination of Cyprus Amax and ASARCO, without
the effect of combining further with Phelps Dodge, provides greater value to
Cyprus Amax and ASARCO holders than your August 20 proposal. "In other words,
Ward and McAllister believe that no premium is better than the significant
premium offered by Phelps Dodge. Although that may be true for Ward and
McAllister, it cannot be true for the shareholders of their companies.

          56.  On August 25, 1999 Phelps Dodge issued a news release confirming
that it had received ASARCO and Cyprus Amax's letter, but that the letter was
not accompanied by any offer to negotiate, talk or exchange information.
Exhibit 7.

          57.  On August 27,1999, Phelps Dodge filed a Form S-4 Registration
State ment with respect to its Proposal, and announced its intention to offer to
exchange shares of Phelps Dodge common stock for ASARCO and Cyprus Amax shares
(the "Exchange Offer"). However, the Exchange Offer cannot be consummated
unless, among other things, the Director Defendants amend the onerous terms of
the shareholder rights agreement (the "Rights Agree  ment" or the "Poison Pill")
or redeem the rights provided therein.

VII. Cyprus Amax's Failure to Redeem or Amend its Shareholder Rights Agreement
     -------------------------------------------------------------------------

          58.  In February 1999, Cyprus Amax adopted the Poison Pill, which was
amended on July 15, 1999.  Under the Rights Agreement, Cyprus Amax's board has
authorized and delivered a dividend of one preferred share purchase right (a
"Right") for each share of common stock of the company outstanding on February
28, 1999.  Each Right represents the right to purchase 1/100 of a share of
Series A Preferred Stock at a price of $50 per 1/100 of Series A Preferred
Stock.  Each share of Series A Preferred Stock has 100 times the voting power of
each share of common stock.

                                       20
<PAGE>

          59.  Distribution of the Rights is triggered by the earliest of the
following events:  (i) the tenth day after the first public announcement by
Cyprus Amax or an Acquiring Person (defined as any person who is the beneficial
owner of 15% or more of the common stock then outstanding) that an Acquiring
Person has become such; or (ii) the tenth business day after the commencement of
or the first public announcement of the intention of any person other than the
company, or other associated persons, to commence a tender or exchange offer,
the consum  mation of which would result in any Person becoming the beneficial
owner of common stock aggregating 15% or more of the then outstanding common
stock.

          60.  The Rights Agreement contains a "flip-in" provision.  Under this
provi sion, if any person becomes an Acquiring Person, each holder of a Right
will be able to purchase shares under preferential terms.  Specifically, he or
she will have the right to purchase that number of shares of common stock, which
at the time the person became an Acquiring Person had it market value of twice
the exercise price, at the current exercise price multiplied by the number of
1/100 of a share of Series A Preferred Stock.  This flip-in provision dilutes
the Acquiring Person's holdings and increases the number of shares that the
Acquiring Person would have to purchase in order to consummate a merger.

          61.  The Rights Agreement also contains a "flip-over" provision, which
arises if, following the time a person becomes an Acquiring Person, (i) Cyprus
Amax shall consolidate with, or merge into, any other person, (ii) any person
shall consolidate or merge with Cyprus Amax and Cyprus Amax is the continuing
corporation of such merger, and in connection with such merger, all or part of
the common shares shall be changed into or exchanged for stock or other
securities of any other person or cash or any other property, or (iii) 50% or
more of Cyprus

                                       21
<PAGE>

Amax's assets or earning power are transferred to any other person other than
Cyprus Amax or a wholly owned subsidiary. This "flip-over" provision entitles
each Right holder to buy, at the current exercise price multiplied by the number
of 1/100 Series A Preferred Stock, common stock of the acquiring company with a
then market value equal to two times the exercise price.

          62.  Due to the prohibitive costs this Poison Pill imposes on an
Acquiring Person, no tender offer or exchange offer that would trigger the
Rights can practically be consummated unless Cyprus Amax's board redeems the
Rights or amends the Poison Pill. Cyprus Amax's board can redeem the Rights at a
redemption price of $0.01 per Right.  In addition, Cyprus Amax's board can amend
the Rights Agreement, as it did on July 15, 1999 to accommodate the ASARCO
Cyprus Merger.  Accordingly, simply by refusing to redeem the Rights or to amend
the Rights Agreement, Cyprus Amax's board can block offers regardless of the
interests of Cyprus Amax's shareholders.  The triggering of the Poison Pill
would be particularly unjustified given the premium price and fair structure
proposed by Phelps Dodge.

          63.  The continued maintenance of the Poison Pill in relation to
Phelps Dodge serves only one purpose:  entrenchment of the Director Defendants
for their own personal gain and at the expense of their duty to act in the best
interests of Cyprus Amax's shareholders.  A failure by Cyprus Amax and the
Director Defendants to redeem the Rights or to amend the Rights Agreement would
be a breach of the Director Defendants' fiduciary duties, because such failure
will effectively hinder the shareholders of Cyprus Amax from exercising their
fundamen  tal rights to determine the future of the company they own.

                               DECLARATORY RELIEF
                               ------------------

                                       22
<PAGE>

          64.  ASARCO and Cyprus Amax's indicate public rejection of Phelps
Dodge's attempts to negotiate a business combination and their failure to take
necessary steps to place the matter before the shareholders of both companies
indicate that there is a substantial controversy between the parties.  The
adverse legal interests of the parties are real and immediate.

          65.  The granting of the requested declaratory relief will serve the
public interest by affording relief from uncertainty and by avoiding delay as
well as conserving judicial resources by avoiding piecemeal litigation.

                               IRREPARABLE INJURY
                               ------------------

          66.  Defendants' unwillingness to consider Phelps Dodge's proposed
three-way transaction will prevent Phelps Dodge's proposal from being placed
before the shareholders of both companies for their consideration.  Should this
occur, the shareholders of ASARCO and Cyprus Amax, including Phelps Dodge, will
be deprived of the unique opportunity to decide which merger proposal is more
beneficial to them.

          67.  The terms of the Merger Agreement, by prohibiting the boards of
ASARCO and Cyprus Amax from considering and negotiating alternative proposals,
effectively prevent the boards from complying with their fiduciary duties to act
in the best interests of their companies.

                                       23
<PAGE>

          68.  In addition, Phelps Dodge, as a potential party to a three-way
transaction, will be deprived of the unique opportunity to enter into a business
combination that would provide it with substantial benefits, including increased
efficiency and international competitive  ness.

          69.  The resulting injury to Phelps Dodge will not be compensable in
money damages and Plaintiffs, as well as other ASARCO and Cyprus Amax
shareholders, have no adequate remedy at law.

                                   COUNT ONE
                                   ---------

                      Breach of Duty of Care by Defendants
                      ------------------------------------

          70.  Plaintiffs repeat and reallege each and every allegation set
forth in paragraphs 1 through 69 as if fully set forth herein.

          71.  The Director Defendants owe a duty of care to plaintiffs.  This
duty requires that they make good faith efforts to be informed and to exercise
appropriate judgment. Failure of a board of directors to inform itself fully of
all reasonably available material informa  tion, including alternatives, before
arriving at a decision constitutes a breach of this duty.

          72.  The Director Defendants, in agreeing to and continuing to abide
by terms in the Merger Agreement that prevent them from fulfilling their
fiduciary duties, have breached their duty of care.  By prohibiting themselves
from obtaining information or considering other potentially superior offers,
Defendants have precluded the possibility of making an informed recommendation
to shareholders of ASARCO and Cyprus Amax.  Even though they claim that they are
willing to negotiate with Phelps Dodge, the unreasonable conditions in their
August 25

                                       24
<PAGE>

letter render any such willingness completely illusory. In addition, ASARCO and
Cyprus Amax have reaffirmed the onerous provisions of their Merger Agreement.

          73.  Plaintiffs seek:  (i) a declaration that Ward and the Director
Defendants breached their duty to exercise due care in failing to make
reasonable efforts to obtain informa  tion about the Phelps Dodge proposal; (ii)
a declaration that Ward and the Director Defendants breached their duty of care
in determining that the ASARCO Cyprus Merger was in the best interests of their
shareholders, without a reconfirmation of the fairness opinion of their
financial advisors; (iii) an injunction compelling Ward and the Director
Defendants to inform themselves adequately and to consider the Phelps Dodge
proposal; (iv) an injunction compelling Ward and the Director Defendants to
submit the Phelps Dodge Proposal to the shareholders of Cyprus Amax; and (v) an
injunction preventing Defendants from taking any further steps to proceed with
the proposed ASARCO Cyprus Merger.

                                   COUNT TWO
                                   ---------

         Breach of Fiduciary Duties by Ward and the Director Defendants
         --------------------------------------------------------------

          74.  Plaintiffs repeat and reallege each and every allegation set
forth in paragraphs I through 73 as if fully set forth herein.

          75.  Ward and the Director Defendants stand in a fiduciary
relationship with Cyprus Amax shareholders, including Phelps Dodge.  As
fiduciaries, they owe the highest duties of care, loyalty and good faith.

          76.  Three proposal for a three-way merger is non-coercive,
nondiscriminatory, and poses no threat to Cyprus Amax's corporate policies and
effectiveness.  Phelps Dodge's

                                       25
<PAGE>

proposal represents a substantial premium over the current market price of
Cyprus Amax's stock and the value of the ASARCO non-premium alternative.

          77.  The failure of Ward and the Director Defendants to determine that
the proposed three-way merger is in the best interests of Cyprus Amax and its
shareholders -- or even to consider the question seriously -- constitutes a
violation of the fiduciary duties owed by them.

          78.  The failure of Ward and the Director Defendants even to assess
whether the proposed three-way merger is in the best interests of Cyprus Amax
and its shareholders is a violation of the fiduciary duties owed by them.

          79.  Plaintiffs seek:  (i) a declaration that the failure of Ward and
the Director Defendants to consider the Phelps Dodge proposal and to determine
that the proposed three-way merger is in the best interests of Cyprus Amax's
shareholders is a breach of fiduciary duty; (ii) an injunction compelling Ward
and the Director Defendants to consider the Phelps Dodge proposal; (iii) an
injunction compelling Ward and the Director Defendants to submit the Phelps
Dodge proposal to the shareholders of Cyprus Amax; and (iv) an injunction
preventing Defendants from taking any further steps to proceed with the proposed
ASARCO Cyprus Merger.

          80.  Plaintiffs have no adequate remedy at law.

                                  COUNT THREE
                                  -----------

                The $45 Million Termination Fee is Unenforceable
                ------------------------------------------------

          81.  Plaintiffs repeat and reallege each and every allegation set
forth in paragraphs 1 through 80 as if fully set forth herein.

                                       26
<PAGE>

          82.  Ward and the Director Defendants stand in a fiduciary
relationship with Cyprus Amax shareholders, including Phelps Dodge.  As
fiduciaries, they owe the highest duties of care, loyalty and good faith.

          83.  The Director Defendants breached their fiduciary duties in
agreeing to a Termination Fee in the grossly excessive sum of $45 million, and
in agreeing that such Termination Fee would apply even if the shareholders of
Cyprus Amax voted against the ASARCO Cyprus Merger.

          84.  Plaintiffs seek a declaration that agreeing to a Termination Fee
of $45 million is a breach of fiduciary duty.

          85.  Plaintiffs have no adequate remedy at law.

                                   COUNT FOUR

                      The Coercive Vote Should Be Enjoined
                      ------------------------------------

          86.  Plaintiffs repeat and reallege each and every allegation set
forth in paragraphs 1 through 85 as if fully set forth herein.

          87.  The scheduled September 30, 1999 vote by the Cyprus Amax
stockholders on the ASARCO Cyprus Merger will be improperly and illegally
coercive.  Stockholders will be wrongfully coerced into voting in favor of the
merger because, as Defendants have structured the Merger Agreement, Cyprus Amax
will have to pay to ASARCO a grossly excessive Termination Fee if the Cyprus
Amax stockholders fail to approve the merger.  The vote of the Cyprus Amax
stockholders will also be wrongfully coerced because they know that the ASARCO
Cyprus transaction is the only business combination the Director Defendants will
approve and thus, due

                                       27
<PAGE>

to the Director Defendants' breaches of fiduciary duties, is the only
transaction whereby Cyprus Amax can be consolidated with another entity.

          88.  Plaintiffs seek an injunction enjoining the September 30, 1999
vote, or, alternatively, enjoining Defendants from taking any actions to
consummate the ASARCO Cyprus Merger.

          89.  Plaintiffs have no adequate remedy at law.

                                   COUNT FIVE
                                   ----------

    Phelps Dodges' Proposal Must be Submitted to Shareholders of Cyprus Amax
    ------------------------------------------------------------------------

          90.  Plaintiffs repeat and reallege each and every allegation set
forth in paragraphs 1 through 99 as if fully set forth herein.

          91.  The proposal for a three-way merger is non-coercive,
nondiscriminatory, and poses no threat to Cyprus Amax's corporate policies and
effectiveness, and represents a substantial premium over the current market
price of Cyprus Amax's stock.

          92.  Ward and the Director Defendants may not improperly prevent the
shareholders of Cyprus Amax from considering the Phelps Dodge Proposal.  Nor may
they improperly manipulate the voting process, as they already have attempted to
do.  Any meeting of Cyprus Amax's shareholders to vote upon the ASARCO Cyprus
Merger must include a consider  ation of the Phelps Dodge proposal, which is
superior and more beneficial to Cyprus Amax's shareholders than the ASARCO-
Cyprus Amax Merger Agreement.  The failure of Ward and the Director Defendants
to put the Phelps Dodge proposal before the shareholders of Cyprus Amax is a
breach of their fiduciary duties.

                                       28
<PAGE>

          93.  Plaintiffs seek:  (i) a declaration that the failure of Ward and
the Director Defendants to submit the Phelps Dodge proposal for consideration by
Cyprus Amax's sharehold  ers is a breach of fiduciary duty; (ii) an injunction
compelling Ward and the Director Defendants to submit the Phelps Dodge proposal
to Cyprus Amax's shareholders at any meeting of Cyprus Amax's shareholders to
consider the ASARCO Cyprus Merger; and (iii) an injunction preventing Ward and
the Director Defendants from taking any further steps to proceed with the
proposed ASARCO Cyprus Merger until Cyprus Amax's shareholders have been given
the opportunity to consider the three-way transaction proposed by Phelps Dodge.

          94.  Plaintiffs have no adequate remedy at law.

                                   COUNT SIX
                                   ---------

                   Failure to Amend or Redeem the Poison Pill
                   ------------------------------------------

          95.  Plaintiffs repeat and reallege each and every allegation set
forth in paragraphs 1 through 94 as if fully set forth herein.

          96.  The proposal for a three-way merger is non-coercive,
nondiscriminatory, and represents a substantial premium over the market price of
ASARCO and Cyprus Amax stock.  The Phelps Dodge proposal posts no threat to
Cyprus Amax's corporate policies and effectiveness.

          97.  The failure of Ward and the Director Defendants to redeem the
Rights or to amend the Rights Agreement, or to otherwise make it inapplicable to
the Phelps Dodge proposal, is a severe and inappropriate response to the
proposed three-way merger.  In addition, Ward and the Director Defendants'
failure to redeem the Rights or to amend the Rights Agree  ment is a breach of
the fiduciary duties owed by them to Cyprus Amax's shareholders.

                                       29
<PAGE>

          98.  The application of the Rights Agreement, or the adoption of any
other defensive measures, to impede or preclude the consideration and/or
consummation of the three  way merger proposed by Phelps Dodge is a violation of
the fiduciary duties owed by Ward and the Director Defendants.  The Phelps Dodge
Exchange Offer is incapable of completion unless the Poison Pill is redeemed or
amended.

          99.  Plaintiffs seek:  (i) a declaration that the failure of Ward and
the Director Defendants to redeem the Rights or to amend the Rights Agreement to
make it inapplicable to the Phelps Dodge proposal is a breach of fiduciary duty;
(ii) an injunction compelling Ward and the Director Defendants to redeem the
Rights or to otherwise amend the Rights Agreement to make it inapplicable to the
Phelps Dodge proposal; and (iii) an injunction enjoining Ward and the Director
Defendants from applying the Rights Agreement or adopting any other defensive
measures aimed at impeding the three-way merger proposed by Phelps Dodge.

          100  Plaintiffs have no adequate remedy at law.

                                  COUNT SEVEN
                                  -----------

 Breach of Fiduciary Duty:  Section 203 of the Delaware General Corporation Law
 ------------------------------------------------------------------------------

          101  Plaintiffs repeat and reallege each and every allegation set
forth in paragraphs 1 through 100 as if fully set forth herein.

          102  Section 203 of the Delaware General Corporation Law, 8 DEL. C.
                                                                      -------
(S) 203, entitled "Business Combinations with Interested Stockholers," applies
to any Delaware corpora  tion that has not opted out of such statute's coverage.

          103  Section 203 provides that, if a person acquires 15% or more of a
com pany's stock, such "interested stockholder" may not engage in a "business
combination" with the

                                       30
<PAGE>

company (which includes mergers or consolidations) for three years after the
person becomes an interested stockholder, unless: (i) prior to the 15%
acquisition, the board of directors has approved either the acquisition or the
business combination; (ii) the interested stockholder acquires 85% of the
corporation's voting stock in the transaction in which it crosses the 15%
threshold; or (iii) on or subsequent to the date of the 15% acquisition, the
business combination is approved by the board of directors and authorized at an
annual or special meeting of stock holders by the affirmative vote of at least
66-2/3% of the outstanding voting stock which is not owned by the interested
stockholder. Section 203 is intended to prevent coercive and inadequate tender
or exchange offers.

          104  Cyprus Amax's board may not properly use Section 203 to prevent
Cyprus Amax's stockholders from considering Phelps Dodge's three-way merger
proposal, nor to prevent substantive negotiations between ASARCO, Cyprus Amax
and Phelps Dodge that could lead to a deal among the three companies.  The true
purpose of Section 203, to allow a board of directors to ensure that its
shareholders receive the highest possible value for their shares, would be
thwarted.  Defendants should not be permitted to use Section 203 to preclude
consideration of all possible alternatives to their preferred transaction or to
deny stockholders the right to vote on other offers.

          105  According to Section 203, Defendants have the power to render the
section inapplicable to Phelps Dodge's proposal by approving the three-way
merger.  The Defendants' failure to approve Phelps Dodge's proposal and to take
other steps necessary to render Section 203 inapplicable prevents Cyprus Amax's
shareholders from considering a combination that will

                                       31
<PAGE>

be more beneficial to them than the purported "merger of equals" between ASARCO
and Cyprus Amax. The Defendants are therefore in breach of their fiduciary
duties.

          106  Plaintiffs seek:  (i) a declaration that the application of
Section 203 to impede or frustrate the Phelps Dodge proposal is a breach of
fiduciary duty; and (ii) an injunction compelling Ward and the Director
Defendants to approve the Phelps Dodge proposal, thereby rendering Section 203
inapplicable.

          107  Plaintiffs have no adequate remedy at law.

                                  COUNT EIGHT
                                  -----------

              ASARCO's Aiding and Abetting of Defendants' Breaches
              ----------------------------------------------------

          108  Plaintiffs repeat and reallege each and every allegation set
forth in paragraphs 1 through  107 as if fully set forth herein.
          109  Defendants have breached their fiduciary duties to Cyprus Amax
and to its shareholders.

          110  ASARCO has aided and abetted Defendants in the breach of their
fiduciary duties.  As a direct participant in the purported "merger of equals,"
ASARCO knew of, and in fact actively encouraged and participated in, the breach
of fiduciary duties set forth herein. ASARCO and Cyprus Amax have entered into a
Merger Agreement which prohibits the consideration of other, even superior,
alternatives and provides ASARCO with an unjustifiably large Termination Fee.
ASARCO induced Defendants to breach their fiduciary duties in order to obtain
the substantial financial benefits that the ASARCO Cyprus Merger would provide,
at the expense of Cyprus Amax's stockholders.

                                       32
<PAGE>

          111  Plaintiffs seek an injunction preventing ASARCO, its employees,
agents and all persons acting on its behalf, from aiding and abetting Ward and
the Director Defendants' breach of fiduciary duties to Cyprus Amax and its
shareholders, with respect to the ASARCO Cyprus Merger and the Phelps Dodge
proposal.

          112  Plaintiffs have no adequate remedy at law.

          WHEREFORE, Phelps Dodge respectfully requests that the Court enter an
order:

          1.        declaring that (i) the failure to make good faith efforts to
obtain information about reasonable alternatives such as the Phelps Dodge
proposal in order to make an informed decision about the ASARCO Cyprus Merger;
and (ii) the failure to obtain a reconfirma  tion of the fairness opinion of
their financial advisors, is a breach of the Director Defendants' duty of care
which they owe to Cyprus Amax and its shareholders;

          2.        declaring that the failure to (i) adequately consider Phelps
Dodge's offer; (ii) determine that the Phelps Dodge proposal is in the best
interest of Cyprus Amax's shareholders; (iii) submit Phelps Dodge's proposed
three-way merger to the shareholders of Cyprus Amax; (iv) render inapplicable
the Poison Pill by redeeming the Rights or amending the Rights Agreement; and
(iv) render inapplicable Section 203 by approving the Phelps Dodge proposal,
constitute a breach of Ward and the Director Defendants' fiduciary duties;

          3.        compelling Ward and the Director Defendants to render
inapplica ble to the Phelps Dodge proposal the Poison Pill by redeeming the
Rights or amending the Rights Agreement;

                                       33
<PAGE>

          4.        compelling Ward and the Director Defendants to render
Section 203 inapplicable to the three-way merger proposed by Phelps Dodge by
approving the Phelps Dodge proposal;

          5.        compelling Defendants to consider the Phelps Dodge proposal
and to take all steps necessary to provide Plaintiffs with a fair and equal
opportunity to enter into a transaction with ASARCO and Cyprus Amax, including
submitting the proposal to Cyprus Amax's shareholders;

          6.        temporarily, preliminarily and permanently enjoining
Defendants from taking any further steps to proceed with the proposed ASARCO
Cyprus Merger until the shareholders of Cyprus Amax have been given the
opportunity to consider the three-way transaction proposed by Phelps Dodge;

          7.        temporarily, preliminarily and permanently enjoining the
adoption or exercise of any measures by Cyprus Amax or Ward and the Director
Defendants which have the effect of impeding, frustrating or interfering with
the Phelps Dodge proposal;

          8.        temporarily, preliminarily and permanently enjoining ASARCO,
its employees, agents and all persons acting on its behalf, from aiding and
abetting Ward and the Director Defendants' breach of their fiduciary duties to
Cyprus Amax's stockholders;

          9.        granting damages for all incidental injuries suffered as a
result of Defendants' unlawful conduct;

          10.       awarding Phelps Dodge its costs and expenses in this action,
including reasonable attorneys' fees; and

                                       34
<PAGE>

               11.  granting such other and further relief as the Court deems
just and proper.

Dated:    Wilmington, Delaware
          August 27, 1999





                                    --------------------------------------
                                    R. Franklin Balotti
                                    Gregory P. Williams
                                    RICHARDS, LAYTON & FINGER, P.A.
                                    One Rodney Square
                                    P.O. Box 551
                                    Wilmington, Delaware 19899
                                    (302) 658-6541
                                    Attorneys for Plaintiffs

Of Counsel:
Stuart J. Baskin
Alan S. Goudiss
SHEARMAN & STERLING
599 Lexington Avenue
New York, New York 10022
(212) 848-4000

John Hall
DEBEVOISE & PLIMPTON
875 Third Avenue
New York, New York 10022
(212) 909-6000

                                       35

<PAGE>

                                                                   EXHIBIT 99.17

[LOGO] CYPRUS AMAX                     ASARCO                           NEWS
       MINERALS COMPANY

                                                           FOR IMMEDIATE RELEASE


                      CYPRUS AMAX AND ASARCO BOARDS REJECT
                          PHELPS DODGE EXCHANGE OFFERS

                         URGE SHAREHOLDERS TO VOTE FOR
                      ASARCO CYPRUS MERGER ON SEPTEMBER 30


DENVER, CO., and NEW YORK, NY, September 8, 1999  Cyprus Amax Minerals Company
(NYSE:CYM) and ASARCO Incorporated (NYSE:AR) today announced that their
respective Boards of Directors unanimously rejected Phelps Dodge's exchange
offers to their shareholders as inadequate and not in the best interests of
their shareholders.  The Boards also unanimously recommended that their
shareholders reject the exchange offers and not tender their shares, and
unanimously reaffirmed that the terms of the Asarco Cyprus business combination
are fair to, and in the best interests of, their shareholders.

     In their recommendations to their shareholders, the Cyprus Amax and Asarco
Boards cited, among other things:

     *    The advantages to the shareholders of becoming shareholders in Asarco
          Cyprus, including, that they retain 100% of the $275 million of annual
          savings created by the combination.

     *    The Phelps Dodge exchange offers are inadequate and fail to compensate
          Cyprus Amax and Asarco shareholders for their relative contribution to
          a three-way combination with Phelps Dodge.

     *    The opinion, rendered on September 8, 1999, of their respective
          financial advisors that the consideration offered to the shareholders
          is inadequate to such holders from a financial point of view.
<PAGE>

     *    The special $5.00 per share cash payment to the stockholders of Asarco
          Cyprus immediately following the combination provides them with
          immediate and significant value.

     *    A three-way combination raises substantial issues under the antitrust
          laws.  The Boards noted that the Phelps Dodge exchange offers are
          conditioned on the expiration of the Hart-Scott antitrust waiting
          period but Phelps Dodge has not even filed the required notification
          yet.  In contrast, the applicable waiting period for the Asarco Cyprus
          combination has already expired.

     *    The highly conditional nature of the Phelps Dodge exchange offers,
          including with respect to antitrust regulatory approval and Phelps
          Dodge's own stockholder approval which is not being sought until after
          the Cyprus Amax and Asarco September 30 shareholder meeting date.

Accordingly, each Board recommends to its shareholders that they do not tender
their shares to Phelps Dodge and strongly urges them to vote in favor of the
Asarco Cyprus combination on September 30.

Milton H. Ward, Chairman and Chief Executive Officer of Cyprus Amax and Francis
R. McAllister, Chairman and Chief Executive Officer of Asarco, speaking together
said, "It is absolutely clear from Phelps Dodge's actions over the course of the
last few weeks that it is trying to coerce Cyprus Amax and Asarco shareholders
into a situation that is not in their best interests. First, Phelps Dodge's
opportunistic and inadequate exchange offers do not give our shareholders their
fair ownership interest in the combined entity. Second, a three-way combination
with Phelps Dodge raises substantial antitrust issues that Phelps Dodge has not
yet
<PAGE>

begun to address. Third, Phelps Dodge has never offered any persuasive reason
why it would walk away if our shareholders approve our two-way combination, if
in fact Phelps Dodge is sincere in wanting to merge with both companies."

Messrs. Ward and McAllister went on to say that "The Boards of Cyprus Amax and
Asarco are committed to achieving the best value for their shareholders and will
not sacrifice their shareholders' interest for Phelps Dodge's own agenda, which
is to maximize value for Phelps Dodge and its shareholders.  It is for this
reason that we strongly recommend shareholders vote for the Asarco Cyprus
transaction on September 30."

Cyprus Amax and Asarco also announced today that they were each filing with the
Securities and Exchange Commission, and will mail to their shareholders, a
Solicitation/Recommendation Statement on Schedule 14D-9 setting forth the
Board's formal recommendation with respect to the Phelps Dodge exchange offer
and the reasons for the recommendation.  Additional information with respect to
each Board's decision to recommend that shareholders reject the Phelps Dodge
offer is contained in the Schedule 14D-9.

Actual results may vary materially from any forward-looking statement the
companies make.  Refer to the cautionary statement risk factors contained in
Cyprus Amax's and Asarco's 1998 Form 10K's.


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