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DERIVATIVE INSTRUMENTS: (Tables)

6 Months Ended

Jun. 30, 2011

DERIVATIVE INSTRUMENTS:

Copper derivative activity related to copper sales transactions

		Second quarter 2011			First six months of 2011
Zero cost collar contracts:
Pounds (in millions)		105.8			211.6
Average LME cap price		$	4.84		$	4.84
Average LME floor price		$	3.02		$	3.02
Swap contracts:
Pounds (in millions)		112.4			232.0
Weighted average COMEX price		$	4.08		$	4.08
Realized loss on copper derivatives (pre-tax)(in millions)		$	8.6		$	44.3

Copper derivative contracts

		2011			1st Quarter 2012
Zero cost collar contracts:
Pounds (in millions)		211.6			46.3
Average LME cap price		$	4.84		$	5.18
Average LME floor price		$	3.02		$	3.50
Estimated % of copper sales covered		30		%	13		%
Accumulated unrealized loss recognized in other comprehensive income (net of taxes of $5.4 million and $- million, respectively) (in millions)		$	8.5		$	—
Swap contracts:
Pounds (in millions)		224.9
Weighted average COMEX price		4.08
Estimated % of copper sales covered		32		%
Accumulated unrealized loss recognized in other comprehensive income net of taxes of $17.6 million (in millions)		$	28.0		$

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Tabular disclosure of the location and amount of gains and losses reported in the statement of financial performance, or when applicable, the statement of financial position. For example, (a) gains and losses recognized in the income statement on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges and (b) gains and losses initially recognized in other comprehensive income on derivative instruments designated and qualifying as cash flow hedges.

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Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

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