Exhibit 24**POWER OF ATTORNEY**          KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints J. StevenWhisler, Ramiro G. Peru and S. David Colton and each of them his true and lawful attorney-in-factand agent, with full power of substitution and resubstitution, for him and in his name, place andstead, in any and all capacities:Annual Report For the Year Ended December 31, 2005 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2005 ofPhelps Dodge Corporation on Form 10-K (“2005 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2005Form 10-K;     (2) to file such 2005 Form 10-K (and any and all such amendments) with allexhibits thereto, and other documents in connection therewith, with the Securitiesand Exchange Commission; and     (3) to take such other action as may be deemed necessary or appropriate inconnection with such 2005 Form 10-K;as fully to all intents and purposes as he might or could do in person, hereby ratifying andconfirming all that said attorneys-in-fact and agents of any of them, or their or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.          IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 1stday of February, 2006.              /s/ Archie W. Dunham   Archie W. Dunham     
 

 
     **POWER OF ATTORNEY**          KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints J. StevenWhisler, Ramiro G. Peru and S. David Colton and each of them his true and lawful attorney-in-factand agent, with full power of substitution and resubstitution, for him and in his name, place andstead, in any and all capacities:Annual Report For the Year Ended December 31, 2005 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2005 ofPhelps Dodge Corporation on Form 10-K (“2005 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2005Form 10-K;     (2) to file such 2005 Form 10-K (and any and all such amendments) with allexhibits thereto, and other documents in connection therewith, with the Securitiesand Exchange Commission; and     (3) to take such other action as may be deemed necessary or appropriate inconnection with such 2005 Form 10-K;as fully to all intents and purposes as he might or could do in person, hereby ratifying andconfirming all that said attorneys-in-fact and agents of any of them, or their or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.          IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 1stday of February, 2006.              /s/ Robert N. Burt   Robert N. Burt     
 

 
     **POWER OF ATTORNEY**          KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints J. StevenWhisler, Ramiro G. Peru and S. David Colton and each of them her true and lawful attorney-in-factand agent, with full power of substitution and resubstitution, for her and in her name, place andstead, in any and all capacities:Annual Report For the Year Ended December 31, 2005 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2005 ofPhelps Dodge Corporation on Form 10-K (“2005 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2005Form 10-K;     (2) to file such 2005 Form 10-K (and any and all such amendments) with allexhibits thereto, and other documents in connection therewith, with the Securitiesand Exchange Commission; and     (3) to take such other action as may be deemed necessary or appropriate inconnection with such 2005 Form 10-K;as fully to all intents and purposes as she might or could do in person, hereby ratifying andconfirming all that said attorneys-in-fact and agents of any of them, or their or her substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.          IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 2ndday of February, 2006.              /s/ Marie L. Knowles   Marie L. Knowles     
 

 
     **POWER OF ATTORNEY**          KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints J. StevenWhisler, Ramiro G. Peru and S. David Colton and each of them his true and lawful attorney-in-factand agent, with full power of substitution and resubstitution, for him and in his name, place andstead, in any and all capacities:Annual Report For the Year Ended December 31, 2005 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2005 ofPhelps Dodge Corporation on Form 10-K (“2005 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2005Form 10-K;     (2) to file such 2005 Form 10-K (and any and all such amendments) with allexhibits thereto, and other documents in connection therewith, with the Securitiesand Exchange Commission; and     (3) to take such other action as may be deemed necessary or appropriate inconnection with such 2005 Form 10-K;as fully to all intents and purposes as he might or could do in person, hereby ratifying andconfirming all that said attorneys-in-fact and agents of any of them, or their or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.          IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 26thday of January, 2006.              /s/ William A. Franke   William A. Franke     
 

 
     **POWER OF ATTORNEY**          KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints J. StevenWhisler, Ramiro G. Peru and S. David Colton and each of them his true and lawful attorney-in-factand agent, with full power of substitution and resubstitution, for him and in his name, place andstead, in any and all capacities:Annual Report For the Year Ended December 31, 2005 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2005 ofPhelps Dodge Corporation on Form 10-K (“2005 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2005Form 10-K;     (2) to file such 2005 Form 10-K (and any and all such amendments) with allexhibits thereto, and other documents in connection therewith, with the Securitiesand Exchange Commission; and     (3) to take such other action as may be deemed necessary or appropriate inconnection with such 2005 Form 10-K;as fully to all intents and purposes as he might or could do in person, hereby ratifying andconfirming all that said attorneys-in-fact and agents of any of them, or their or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.          IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 31stday of January, 2006.              /s/ Robert D. Johnson   Robert D. Johnson     
 

 
     **POWER OF ATTORNEY**          KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints J. StevenWhisler, Ramiro G. Peru and S. David Colton and each of them his true and lawful attorney-in-factand agent, with full power of substitution and resubstitution, for him and in his name, place andstead, in any and all capacities:Annual Report For the Year Ended December 31, 2005 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2005 ofPhelps Dodge Corporation on Form 10-K (“2005 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2005Form 10-K;     (2) to file such 2005 Form 10-K (and any and all such amendments) with allexhibits thereto, and other documents in connection therewith, with the Securitiesand Exchange Commission; and     (3) to take such other action as may be deemed necessary or appropriate inconnection with such 2005 Form 10-K;as fully to all intents and purposes as he might or could do in person, hereby ratifying andconfirming all that said attorneys-in-fact and agents of any of them, or their or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.          IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 23rdday of January, 2006.              /s/ Robert D. Krebs   Robert D. Krebs     
 

 
     **POWER OF ATTORNEY**          KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints J. StevenWhisler, Ramiro G. Peru and S. David Colton and each of them his true and lawful attorney-in-factand agent, with full power of substitution and resubstitution, for him and in his name, place andstead, in any and all capacities:Annual Report For the Year Ended December 31, 2005 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2005 ofPhelps Dodge Corporation on Form 10-K (“2005 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2005Form 10-K;     (2) to file such 2005 Form 10-K (and any and all such amendments) with allexhibits thereto, and other documents in connection therewith, with the Securitiesand Exchange Commission; and     (3) to take such other action as may be deemed necessary or appropriate inconnection with such 2005 Form 10-K;as fully to all intents and purposes as he might or could do in person, hereby ratifying andconfirming all that said attorneys-in-fact and agents of any of them, or their or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.          IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 1stday of February, 2006.              /s/ Gordon R. Parker   Gordon R. Parker     
 

 
     **POWER OF ATTORNEY**          KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints J. StevenWhisler, Ramiro G. Peru and S. David Colton and each of them his true and lawful attorney-in-factand agent, with full power of substitution and resubstitution, for him and in his name, place andstead, in any and all capacities:Annual Report For the Year Ended December 31, 2005 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2005 ofPhelps Dodge Corporation on Form 10-K (“2005 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2005Form 10-K;     (2) to file such 2005 Form 10-K (and any and all such amendments) with allexhibits thereto, and other documents in connection therewith, with the Securitiesand Exchange Commission; and     (3) to take such other action as may be deemed necessary or appropriate inconnection with such 2005 Form 10-K;as fully to all intents and purposes as he might or could do in person, hereby ratifying andconfirming all that said attorneys-in-fact and agents of any of them, or their or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.          IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 27thday of January, 2006.              /s/ William J. Post   William J. Post     
 

 
     **POWER OF ATTORNEY**          KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints J. StevenWhisler, Ramiro G. Peru and S. David Colton and each of them his true and lawful attorney-in-factand agent, with full power of substitution and resubstitution, for him and in his name, place andstead, in any and all capacities:Annual Report For the Year Ended December 31, 2005 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2005 ofPhelps Dodge Corporation on Form 10-K (“2005 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2005Form 10-K;     (2) to file such 2005 Form 10-K (and any and all such amendments) with allexhibits thereto, and other documents in connection therewith, with the Securitiesand Exchange Commission; and     (3) to take such other action as may be deemed necessary or appropriate inconnection with such 2005 Form 10-K;as fully to all intents and purposes as he might or could do in person, hereby ratifying andconfirming all that said attorneys-in-fact and agents of any of them, or their or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.          IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 27thday of January, 2006.              /s/ Jon C. Madonna   Jon C. Madonna     
 

 
     **POWER OF ATTORNEY**          KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints J. StevenWhisler, Ramiro G. Peru and S. David Colton and each of them his true and lawful attorney-in-factand agent, with full power of substitution and resubstitution, for him and in his name, place andstead, in any and all capacities:Annual Report For the Year Ended December 31, 2005 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2005 ofPhelps Dodge Corporation on Form 10-K (“2005 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2005Form 10-K;     (2) to file such 2005 Form 10-K (and any and all such amendments) with allexhibits thereto, and other documents in connection therewith, with the Securitiesand Exchange Commission; and     (3) to take such other action as may be deemed necessary or appropriate inconnection with such 2005 Form 10-K;as fully to all intents and purposes as he might or could do in person, hereby ratifying andconfirming all that said attorneys-in-fact and agents of any of them, or their or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.          IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 26thday of January, 2006.              /s/ Jack E. Thompson   Jack E. Thompson     
 

 
     **POWER OF ATTORNEY**          KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints Ramiro G. Peruand S. David Colton and each of them his true and lawful attorney-in-fact and agent, with fullpower of substitution and resubstitution, for him and in his name, place and stead, in any and allcapacities:Annual Report For the Year Ended December 31, 2005 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2005 ofPhelps Dodge Corporation on Form 10-K (“2005 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2005Form 10-K;     (2) to file such 2005 Form 10-K (and any and all such amendments) with allexhibits thereto, and other documents in connection therewith, with the Securitiesand Exchange Commission; and     (3) to take such other action as may be deemed necessary or appropriate inconnection with such 2005 Form 10-K;as fully to all intents and purposes as he might or could do in person, hereby ratifying andconfirming all that said attorneys-in-fact and agents of any of them, or their or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.          IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 8thday of February, 2006.              /s/ J. Steven Whisler   J. Steven Whisler     
 

 
     **POWER OF ATTORNEY**          KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and appoints J. StevenWhisler, Ramiro G. Peru and S. David Colton and each of them his true and lawful attorney-in-factand agent, with full power of substitution and resubstitution, for him and in his name, place andstead, in any and all capacities:Annual Report For the Year Ended December 31, 2005 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2005 ofPhelps Dodge Corporation on Form 10-K (“2005 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2005Form 10-K;     (2) to file such 2005 Form 10-K (and any and all such amendments) with allexhibits thereto, and other documents in connection therewith, with the Securitiesand Exchange Commission; and     (3) to take such other action as may be deemed necessary or appropriate inconnection with such 2005 Form 10-K;as fully to all intents and purposes as he might or could do in person, hereby ratifying andconfirming all that said attorneys-in-fact and agents of any of them, or their or his substitute orsubstitutes, may lawfully do or cause to be done by virtue hereof.          IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 30thday of January, 2006.              /s/ Charles C. Krulak   Charles C. Krulak