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MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS (Tables)

12 Months Ended

Dec. 31, 2014

MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS

Schedule of impairment charges on mineral property

Name of Property/Complex		Segment		2014			2013			2012
				(in thousands)
Los Azules Project		Argentina		$	228,301		$	—		$	—
Other San Juan Properties		Argentina			7,817			—			—
Telken Tenements(1)		Argentina			—			13,792			—
Este Tenements(1)		Argentina			—			2,784			—
Piramides Tenements(1)		Argentina			—			5,079			—
Tobias Tenements(1)		Argentina			—			6,074			—
Cerro Mojon Tenements		Argentina			1,971			—			—
La Merced Tenements		Argentina			1,891			—			—
Cabeza de Vaca Tenements		Argentina			877			—			—
El Trumai Tenements		Argentina			1,534			—			—
Martes 13 Tenements		Argentina			3,568			—			—
Celestina Tenements		Argentina			1,753			—			—
Other Santa Cruz Exploration Properties		Argentina			7,601			—			—
Tonkin Complex		Nevada			31,391			—			—
Gold Bar Complex		Nevada			25,435			—			—
Limo Complex		Nevada			23,438			19,450			—
North Battle Mountain Complex		Nevada			1,921			—			14,044
East Battle Mountain Complex		Nevada			4,060			—			—
West Battle Mountain Complex		Nevada			2,567			6,287			—
Other United States Properties		Nevada			9,611			9,497			2,902
El Gallo 2 Properties		Mexico			—			—			1,343
Property, plant and equipment		Argentina			—			—			179
​	​	​	​	​	​	​	​	​	​	​	​	​
Total impairments				$	353,736		$	62,963		$	18,468
​	​	​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​	​	​

(1) In the fourth quarter of 2013, these tenements were transferred to MSC as part of the vend-in agreement described in Note 7, Investment in Minera Santa Cruz S.A. ("MSC")—San José Mine, and were therefore not included in the Company's mineral property interests as at December 31, 2014 and 2013.

Summary of mineral property interests

Name of Property/Complex		State/Province		Country		2014			2013
						(in thousands)
Los Azules Copper Project		San Juan		Argentina		$	202,889		$	431,190
Other San Juan Exploration Properties		San Juan		Argentina			—			7,818
Cerro Mojon Tenements		Santa Cruz		Argentina			—			1,971
La Merced Tenements		Santa Cruz		Argentina			—			1,891
Cabeza de Vaca Tenements		Santa Cruz		Argentina			—			877
El Trumai Tenements		Santa Cruz		Argentina			—			1,534
Martes 13 Tenements		Santa Cruz		Argentina			—			3,568
Celestina Tenements		Santa Cruz		Argentina			—			1,753
Other Santa Cruz Exploration Properties		Santa Cruz		Argentina			—			7,601
Tonkin Complex		Nevada		United States			20,423			51,946
Gold Bar Complex		Nevada		United States			51,577			77,012
Limo Complex		Nevada		United States			—			23,438
North Battle Mountain Complex		Nevada		United States			2,227			4,148
East Battle Mountain Complex		Nevada		United States			—			4,060
West Battle Mountain Complex		Nevada		United States			—			2,567
Other United States Properties		Nevada		United States			—			9,610
El Gallo 1 Mine		Sinaloa		Mexico			7,214			8,502
El Gallo 2 Properties		Sinaloa		Mexico			3,482			3,482
​	​	​	​	​	​	​	​	​	​	​	​
Total Mineral Property Interests						$	287,812		$	642,968
​	​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​	​

Schedule of reconciliation of asset retirement obligations

		2014			2013
		(in thousands)
Asset retirement obligation liability, beginning balance		$	7,247		$	6,359
Settlements			(52	)		(60	)
Accretion of liability			407			461
Adjustment reflecting updated estimates			(131	)		487
​	​	​	​	​	​	​	​
Asset retirement obligation liability, ending balance		$	7,471		$	7,247
​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​

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