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INVENTORIES | 12 Months Ended
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Dec. 31, 2017
Disclosure of inventories [Abstract] |
Disclosure of inventories [text block] | 9. Inventories
| As at December 31
(in millions of U.S. dollars) |  |  | 2017 | 2016 (Note 5)
Inventories |  |  |  |
Heap leach ore(4) |  |  | 163.1 | 185.9
Work-in-process(3) |  |  | 18.5 | 8.7
Finished goods(1)(3) |  |  | 16.1 | 11.5
Stockpile ore(3) |  |  | 23.8 | 6.7
Supplies(3) |  |  | 50.4 | 40.9
|  |  | 271.9 | 253.7
Less: non-current inventories(2) |  |  | (78.7) | (103.3)
Total current inventories |  |  | 193.2 | 150.4
| 1. | The amount of inventories recognized in operating expenses for the year ended December 31, 2017 was $302.8 million (2016 - $259.1 million).
| 2. | Non-current inventories, which include heap leach inventories at Mesquite and low-grade stockpiled inventories at Rainy River, of $78.7 million (December 31, 2016 – $103.3 million) are expected to be recovered after one year.
| 3. | Rainy River achieved commercial production on November 1, 2017, resulting in Rainy River recognizing inventories as at December 31, 2017.
| 4. | During the year ended December 31, 2016 the Company wrote down $26.6 million of inventory at Cerro San Pedro of which $24.0 million was included in operating expenses and $2.6 million was included in depreciation and depletion.

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