Sale of Metals and Related Costs	3 Months Ended
Mar. 31, 2015
Sale of Metals and Cost of Metals Sold
Sale of Metals and Related Costs	14. Sale of Metals and Related Costs During the three months ended March 31, 2015 the Company sold marketable lead and zinc concentrates from its Velardeña Properties to a single customer. Under the terms of the Company’s agreement with its concentrates customer, title passes when a provisional payment is made, which occurs generally after the product is shipped and customary sales documents are completed. Costs related to the sale of metals products include direct and indirect costs incurred to mine, process and market the products. At March 31, 2015 the Company had written down its metals and in-process inventories to net realizable value including a charge to the cost of metals sold of approximately $0.1 million. At December 31, 2014 the Company had written down its metals and in-process inventories to net realizable value including a charge to the cost of metals sold of approximately $1.2 million and a charge to depreciation expense of approximately $0.7 million. During the quarter ended March 31, 2014 the Company did not sell any products or incur any related costs as the result of a suspension of mining and processing effective June 19, 2013 (see Note 1).

14. Sale of Metals and Related Costs

During the three months ended March 31, 2015 the Company sold marketable lead and zinc concentrates from its Velardeña Properties to a single customer. Under the terms of the Company’s agreement with its concentrates customer, title passes when a provisional payment is made, which occurs generally after the product is shipped and customary sales documents are completed. Costs related to the sale of metals products include direct and indirect costs incurred to mine, process and market the products. At March 31, 2015 the Company had written down its metals and in-process inventories to net realizable value including a charge to the cost of metals sold of approximately $0.1 million. At December 31, 2014 the Company had written down its metals and in-process inventories to net realizable value including a charge to the cost of metals sold of approximately $1.2 million and a charge to depreciation expense of approximately $0.7 million.

During the quarter ended March 31, 2014 the Company did not sell any products or incur any related costs as the result of a suspension of mining and processing effective June 19, 2013 (see Note 1).