Significant Customers Significant Customers (Tables)

3 Months Ended

Mar. 31, 2012

Significant Customers [Abstract]

Schedule of Significant Customers

The following table indicates customers that represent 10% or more of total revenue (in millions):

Customer	March 31, 2012		March 31, 2011		Segments reporting revenue
Valcambi	$	107.9	$	52.6	Palmarejo, San Bartolomé
Auramet	13.9		29.9		San Bartolomé, Kensington
China National Gold	4.6		48.1		Kensington
International Commodities	16.8		46.2		Palmarejo, San Bartolomé, Rochester
Mitsui	—		—		Palmarejo, San Bartolomé, Rochester