Properties, Plant and Equipment
6 Months Ended
Jun. 30, 2015
Property, Plant and Equipment [Abstract]  
Properties, Plant and Equipment
Properties, Plant and Equipment
 
The Company made capital expenditures totaling approximately $3.7 million during the six months ended June 30, 2015. Approximately $1.9 million was primarily for the design and construction of the heap leach expansion and related infrastructure. Approximately $1.8 million was used to purchase strategic properties located in Storey County including 7.5 acres of various properties adjacent to the mining and processing operation.

During the three and six months ended June 30, 2015, the Company recognized depreciation expense of $1.6 million and $3.2 million, respectively. Depreciation expense for the three and six months periods ended June 30, 2014, was $1.3 and $2.7 million, respectively.