SUPPLEMENTARY MINERAL RESERVE INFORMATION (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2011

Supplementary Mineral Reserve Information [Abstract]

Estimated Recoverable Proven and Probable Reserves by Location



	Recoverable Proven and Probable Reserves
	December 31, 2011
	Copper^a (billion pounds)	Gold (million ounces)	Molybdenum (billion pounds)
North America	40.6	0.4	2.71
South America	39.1	1.3	0.71
Indonesia	31.6	32.2	—
Africa	8.4	—	—
Consolidated basis^b	119.7	33.9	3.42
Net equity interest^c	96.1	30.6	3.09


a.	Consolidated recoverable copper reserves include 3.1 billion pounds in leach stockpiles and 1.3 billion pounds in mill stockpiles.

Consolidated basis reserves represent estimated metal quantities after reduction for joint venture partner interests at the Morenci mine in North America and the Grasberg minerals district in Indonesia. Excluded from the table above are FCX’s estimated recoverable proven and probable reserves of 0.86 billion pounds of cobalt at Tenke Fungurume and 330.3 million ounces of silver in Indonesia, South America and North America.


c.	Net equity interest reserves represent estimated consolidated basis metal quantities further reduced for noncontrolling interest ownership. Excluded from the table above are FCX’s estimated recoverable proven and probable reserves of 0.49 billion pounds of cobalt at Tenke Fungurume and 272.1 million ounces of silver in Indonesia, South America and North America.

Supplementary Reserve Information at 100% Basis by Location



	100% Basis
		Average Ore Grade Per Metric Ton					Recoverable Proven and Probable Reserves^a
	Ore (million	Copper	Gold		Molybdenum		Copper (billion	Gold (million	Molybdenum (billion
Year-End	metric tons)	(%)	(grams)		(%)		pounds)	ounces)	pounds)
2007	12,224	0.51	0.20		0.01		110.4	54.1	2.04
2008	14,067	0.48	0.17		0.01		118.8	53.4	2.49
2009	13,807	0.49	0.17		0.01		120.9	49.8	2.60
2010	18,516	0.42	0.12		0.01		137.9	47.9	3.41
2011	17,739	0.43	0.12		0.01		136.7	46.1	3.43
By Area at December 31, 2011:
North America
Developed and producing:
Morenci	4,250	0.27	—		—	^b	15.6	—	0.09
Bagdad	1,629	0.30	—	^b	0.02		8.7	0.1	0.40
Safford	206	0.43	—		—		1.6	—	—
Sierrita	2,777	0.23	—	^b	0.03		12.1	0.1	1.24
Tyrone	148	0.29	—		—		0.7	—	—
Chino	421	0.42	0.02		—	^b	3.5	0.2	0.01
Miami	60	0.47	—		—		0.5	—	—
Henderson	121	—	—		0.17		—	—	0.40
Undeveloped:
Climax	187	—	—		0.16		—	—	0.58
Cobre	73	0.39	—		—		0.3	—	—
South America
Developed and producing:
Cerro Verde	3,977	0.39	—		0.01		30.2	—	0.71
El Abra	881	0.42	—		—		4.3	—	—
Candelaria	339	0.58	0.13		—		4.5	1.2	—
Ojos del Salado	6	1.00	0.25		—		0.1	0.1	—
Indonesia
Developed and producing:
Grasberg open pit	312	0.85	0.91		—		4.9	7.3	—
Deep Ore Zone	206	0.57	0.69		—		2.2	3.5	—
Big Gossan	56	2.18	0.97		—		2.4	1.2	—
Undeveloped:
Grasberg block cave	1,019	0.98	0.77		—		18.7	16.3	—
Kucing Liar	420	1.23	1.09		—		9.7	6.8	—
Deep Mill Level Zone	510	0.85	0.72		—		8.3	9.3	—
Africa
Developed and producing:
Tenke Fungurume	141	3.00	—		—		8.4	—	—
Total 100% basis	17,739						136.7	46.1	3.43
Consolidated basis^c							119.7	33.9	3.42
FCX’s equity share^d							96.1	30.6	3.09


a.	Includes estimated recoverable metals contained in stockpiles.


b.	Amounts not shown because of rounding.


c.	Consolidated basis reserves represent estimated metal quantities after reduction for joint venture partner interests at the Morenci mine in North America and the Grasberg minerals district in Indonesia.


d.	Net equity interest reserves represent estimated consolidated basis metal quantities further reduced for noncontrolling interest ownership.