Exhibit 32

CERTIFICATION
Pursuant to 18 United States Code § 1350

     The undersigned hereby certifies that, to his knowledge, the Annual Report on Form 10-K for the year ended December 31, 2006 of Phelps Dodge Corporation (the “Company”) filed with the Securities and Exchange Commission on the date hereof fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in such report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	/s/ J. Steven Whisler
Name:	J. Steven Whisler
Title:	Chairman and
	Chief Executive Officer
Date:	February 27, 2007

     The undersigned hereby certifies that, to his knowledge, the Annual Report on Form 10-K for the year ended December 31, 2006 of Phelps Dodge Corporation (the “Company”) filed with the Securities and Exchange Commission on the date hereof fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in such report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	/s/ Ramiro G. Peru
Name:	Ramiro G. Peru
Title:	Executive Vice President and
	Chief Financial Officer
Date:	February 27, 2007