Property, Plant, Equipment and Development

9 Months Ended

Sep. 30, 2013

Property, Plant and Equipment [Abstract]

Property, Plant, Equipment and Development

Property, Plant, Equipment and Development, net

Property, plant, equipment and development, net was comprised of the following:

(in millions)	September 30, 2013			December 31, 2012
Mining properties and mineral reserves	$	893.3		$	978.0
Mining and milling equipment and facilities	1,883.7			467.5
Processing facilities	166.4			165.8
Construction-in-progress	87.1			1,089.0
Other	18.6			18.2
	3,049.1			2,718.5
Less: Accumulated depreciation, depletion and amortization	(224.7		)	(179.6		)
	$	2,824.4		$	2,538.9

The construction-in-progress balance included $74.5 million and $1,079.8 million related to TCM's Mt. Milligan project under construction in British Columbia ("Mt. Milligan") as of September 30, 2013 and December 31, 2012, respectively.

Capitalized assets related to Endako Mine, an open pit molybdenum mine in British Columbia in which TCM owns a 75% joint venture interest (the "Endako Mine"), were subject to an asset impairment during the year ended December 31, 2012. See Note 6 of TCM's 2012 Form 10-K for further discussion of the asset impairment.

Allowances, which will be used to offset future taxable income, generated from qualifying new mine development costs were included as reductions to property, plant, equipment and development in the Condensed Consolidated Balance Sheets by $67.0 million and $55.4 million as of September 30, 2013 and December 31, 2012, respectively.