CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME (UNADITED) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
REVENUES
Molybdenum sales	$ 104.7	$ 109.6
Tolling, calcining and other	4.0	4.0
Total revenues	108.7	113.6
Cost of sales
Operating expenses	68.6	99.6
Depreciation, depletion and amortization	12.8	19.6
Total cost of sales	81.4	119.2
Selling and marketing	2.3	1.9
Accretion expense	0.8	0.5
General and administrative	7.1	7.7
Exploration	0.1	0.8
Total costs and expenses	91.7	130.1
OPERATING INCOME (LOSS)	17.0	(16.5)
OTHER (INCOME) AND EXPENSE
Change in fair value of common stock purchase warrants	0	0.1
Loss (gain) on foreign exchange	19.4	(6.6)
Interest and finance fees	0.1	1.5
Interest income	(0.2)	(0.2)
Other	0	(0.3)
Total other expense and (income)	19.3	(5.5)
(Loss) income before income and mining taxes	(2.3)	(11.0)
Income and mining tax (benefit)	(3.2)	(12.1)
NET INCOME	0.9	1.1
COMPREHENSIVE (LOSS) INCOME
Foreign currency translation	(26.1)	27.4
Total other comprehensive (loss) income	(26.1)	27.4
Total comprehensive (loss) income	$ (25.2)	$ 28.5
NET (LOSS) INCOME PER SHARE
Basic (in dollars per share)	$ 0.01	$ 0.01
Diluted (in dollars per share)	$ 0.00	$ 0.01
Weighted-average number of common shares
Basic (in shares)	169.7	168.1
Diluted (in shares)	216.3	168.5