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INVENTORIES: (Tables)

3 Months Ended

Mar. 31, 2012

INVENTORIES:

Schedule of inventories

(in millions)		March 31, 2012			December 31, 2011
Inventory, current:
Metals at lower of average cost or market:
Finished goods		$	76.5		$	93.3
Work-in-process		258.5			296.1
Supplies at average cost		274.1			262.5
Total current inventory		$	609.1		$	651.9
Inventory, long-term:
Leach stockpiles		$	154.0		$	123.0

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- Definition

Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Topic

-SubTopic

-Publisher SEC

-Number 210

-Article 5

-Subparagraph a,b,c

-Name Regulation S-X (SX)

-Paragraph 6

-Section 2

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