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INVENTORIES: | 9 Months Ended
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Sep. 30, 2016
INVENTORIES: |
INVENTORIES: | NOTE 3 - INVENTORIES: Inventories were as follows ($ in millions):
|  | At September 30, 2016 |  | At December 31, 2015 |
Inventory, current: |  |  |  |  |
Metals at average cost: |  |  |  |  |
Finished goods |  | $ | 115.8 |  | $ | 104.1 |
Work-in-process |  | 196.5 |  | 188.6 |
Ore stockpiles on leach pads |  | 304.2 |  | 243.2 |
Supplies at average cost |  | 356.1 |  | 321.3 |
Total current inventory |  | $ | 972.6 |  | $ | 857.2 |
Inventory, non-current: |  |  |  |  |
Ore stockpiles on leach pads |  | $ | 786.6 |  | $ | 752.3 |
During the nine months ended September 30, 2016 and 2015, total leaching costs added as non-current inventory of ore stockpiles on leach pads amounted to $329.4 million and $360.0 million, respectively. Leaching inventories recognized in cost of sales amounted to $234.1 million and $172.8 million for the nine months ended September 30, 2016 and 2015, respectively.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 + Details
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