Segment Information (Tables)

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Schedule of segment information

Segment information for the three months ended March 31, 2013 and 2012 is as follows:

For the three months ended March 31, 2013:

(in millions)	US Operations Molybdenum		Canadian Operations Molybdenum			Copper-Gold (Development)			Inter- segment			Total
Revenues
Molybdenum sales	$	89.8	$	14.9		$	—		$	—		$	104.7
Tolling, calcining and other	4.0		—			—			—			4.0
	93.8		14.9			—			—			108.7
Cost and expenses
Operating expenses	53.4		15.2			—			—			68.6
Selling and marketing	1.7		0.8			—			(0.2		)	2.3
Depreciation, depletion and amortization	7.5		4.8			—			—			12.3
Accretion expense	0.3		0.4			0.1			—			0.8
	62.9		21.2			0.1			(0.2		)	84.0
Segment revenue less costs and expenses	30.9		(6.3		)	(0.1		)	0.2			24.7
Other segment expenses
Loss on foreign exchange	0.7		1.6			3.8			—			6.1
Segment income (loss) before income and mining taxes	$	30.2	$	(7.9	)	$	(3.9	)	$	0.2		$	18.6

For the three months ended March 31, 2012:

(in millions)	US Operations Molybdenum			Canadian Operations Molybdenum			Copper-Gold (Development)			Inter- segment			Total
Revenues
Molybdenum sales	$	84.5		$	25.1		$	—		$	—		$	109.6
Tolling, calcining and other	4.0			—			—			—			4.0
	88.5			25.1			—			—			113.6
Cost and expenses
Operating expenses	70.9			28.7			—			—			99.6
Selling and marketing	1.4			0.8			—			(0.3		)	1.9
Depreciation, depletion and amortization	5.7			13.3			—			—			19.0
Accretion expense	0.4			0.1			—			—			0.5
	78.4			42.9			—			(0.3		)	121.0
Segment revenue less costs and expenses	10.1			(17.8		)	—			0.3			(7.4		)
Other segment income
Gain on foreign exchange	(0.6		)	(0.9		)	(3.0		)	—			(4.5		)
Segment income (loss) before income and mining taxes	$	10.7		$	(16.9	)	$	3.0		$	0.3		$	(2.9	)

Schedule of reconciliation of segment income to net income

Reconciliation of Segment Income to Net Income

(in millions)	For the Three Months Ended March 31,
	2013			2012
Segment income (loss)	$	18.6		$	(2.9	)
Other (income) expense
Change in fair value of common stock purchase warrants	—			0.1
General and administrative	7.1			7.7
Exploration	0.1			0.8
Interest (income) expense, net	(0.1		)	1.3
Loss (gain) on foreign exchange	13.3			(2.1		)
Corporate depreciation	0.5			0.6
Other	—			(0.3		)
Loss before income and mining taxes	(2.3		)	(11.0		)
Income and mining benefit expense	(3.2		)	(12.1		)
Net income	$	0.9		$	1.1

Schedule of other segment information regarding capital expenditures, assets and liabilities, including the assets and liabilities attributed to corporate operations

Other segment information regarding capital expenditures, assets and liabilities, including the assets and liabilities attributed to corporate operations, is as follows (in millions):

As of March 31, 2013	US Operations Molybdenum		Canadian Operations Molybdenum		Copper-Gold (Development)		Inter-segment		Total
Capital expenditures (1)	$	0.3	$	0.3	$	154.4	$	0.1	$	155.1
Property, plant, equipment and development	$	275.9	$	181.6	$	2,160.2	$	4.9	$	2,622.6
Assets	$	480.1	$	247.4	$	2,240.9	$	459.6	$	3,428.0
Liabilities	$	81.8	$	19.1	$	882.8	$	1,065.8	$	2,049.5

As of March 31, 2012	US Operations Molybdenum		Canadian Operations Molybdenum		Copper-Gold (Development)		Inter-segment		Total
Capital expenditures (2)	$	4.9	$	42.1	$	140.8	$	0.1	$	187.9
Property, plant, equipment and development	$	291.5	$	740.0	$	1,552.7	$	6.2	$	2,590.4
Goodwill	$	47.0	$	—	$	—	$	—	$	47.0
Assets	$	583.3	$	815.0	$	1,605.3	$	79.5	$	3,083.1
Liabilities	$	92.1	$	128.9	$	698.7	$	403.5	$	1,323.2

(1)  Capital expenditures are for the three months ended March 31, 2013.

(2)  Capital expenditures are for the three months ended March 31, 2012.