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, 2006 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2006 ofPhelps Dodge Corporation on Form 10-K (“2006 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2006Form 10-K;     (2) to file such 2006 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 2006 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 6th day ofFebruary, 2007.     /s/ Archie W. Dunham     Archie W. Dunham
 

 
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, 2006 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2006 ofPhelps Dodge Corporation on Form 10-K (“2006 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2006Form 10-K;     (2) to file such 2006 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 2006 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 5thday of February 2007.     /s/ W. A. Franke     William A. Franke
 

 
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, 2006 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2006 ofPhelps Dodge Corporation on Form 10-K (“2006 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2006Form 10-K;     (2) to file such 2006 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 2006 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 7thday of February 2007.     /s/ Robert D. Johnson     Robert D. Johnson
 

 
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 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, 2006 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2006 ofPhelps Dodge Corporation on Form 10-K (“2006 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2006Form 10-K;     (2) to file such 2006 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 2006 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 6th day ofFebruary 2007.     /s/ Marie Knowles     Marie L. Knowles
 

 
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, 2006 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2006 ofPhelps Dodge Corporation on Form 10-K (“2006 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2006Form 10-K;     (2) to file such 2006 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 2006 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 7thday of February 2007.     /s/ Charles C. Krulak     Charles C. Krulak
 

 
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, 2006 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2006 ofPhelps Dodge Corporation on Form 10-K (“2006 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2006Form 10-K;     (2) to file such 2006 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 2006 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 4thday of February 2007.     /s/ Jon C. Madonna     Jon C. Madonna
 

 
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, 2006 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2006 ofPhelps Dodge Corporation on Form 10-K (“2006 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2006Form 10-K;     (2) to file such 2006 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 2006 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 6th day ofFebruary 2007.     /s/ Dustan E. McCoy     Dustan E. McCoy
 

 
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, 2006 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2006 ofPhelps Dodge Corporation on Form 10-K (“2006 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2006Form 10-K;     (2) to file such 2006 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 2006 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 6thday of February 2007.     /s/ Parker     Gordon R. Parker
 

 
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, 2006 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2006 ofPhelps Dodge Corporation on Form 10-K (“2006 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2006Form 10-K;     (2) to file such 2006 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 2006 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 7thday of February 2007.     /s/ William J. Post     William J. Post
 

 
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, 2006 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2006 ofPhelps Dodge Corporation on Form 10-K (“2006 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2006Form 10-K;     (2) to file such 2006 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 2006 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 7thday of February 2007.     /s/ Martin Richenhagen     Martin H. Richenhagen
 

 
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, 2006 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2006 ofPhelps Dodge Corporation on Form 10-K (“2006 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2006Form 10-K;     (2) to file such 2006 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 2006 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 6thday of February 2007.     /s/ Jack E. Thompson     Jack E. Thompson
 

 
Exhibit 24**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, 2006 of Phelps Dodge Corporation on Form 10-K     (1) to sign the Annual Report for the fiscal year ended December 31, 2006 ofPhelps Dodge Corporation on Form 10-K (“2006 Form 10-K”) to be filed under theSecurities Exchange Act of 1934, as amended, and any and all amendments to such 2006Form 10-K;     (2) to file such 2006 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 2006 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 20thday of February 2007.     /s/ J. Steven Whisler     J. Steven Whisler