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v3.21.1

Property, plant and equipment - Summary of property, plant and equipment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | $ 4,088,202 | $ 3,988,476
Write-down of assets | (38,660) | (6,298)
Ending balance | 3,998,493 | 4,088,202
Land and buildings |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 183,733 | 144,270
Ending balance | 185,940 | 183,733
Plant and equipment |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 1,294,805 | 1,103,270
Ending balance | 1,231,300 | 1,294,805
Capital works in progress |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 83,078 | 109,361
Ending balance | 83,513 | 83,078
Mineral properties |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 2,429,879 | 2,538,116
Ending balance | 2,399,048 | 2,429,879
Capitalized Evaluation |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 96,707 | 93,459
Ending balance | 98,692 | 96,707
Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 6,844,689 | 6,676,254
Additions/transfers | 216,243 | 195,230
IFRS 16 transition adjustment |  | 9,379
Proceeds on pre-commercial production sales, net |  | (12,159)
Commercial production transfers |  | 0
(Impairment) reversal |  | (3,578)
Write-down of assets | (40,030) | (1,995)
Other movements/transfers | 1,373 | 883
Transfer to assets held for sale |  | (11,690)
Disposals | (10,877) | (7,635)
Ending balance | 7,011,398 | 6,844,689
Cost | Land and buildings |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 242,511 | 192,244
Additions/transfers | 14,737 | 17,379
IFRS 16 transition adjustment |  | 7,555
Proceeds on pre-commercial production sales, net |  | 0
Commercial production transfers |  | 27,070
(Impairment) reversal |  | 0
Write-down of assets | 0 | 0
Other movements/transfers | 1,841 | (1,715)
Transfer to assets held for sale |  | 0
Disposals | (402) | (22)
Ending balance | 258,687 | 242,511
Cost | Plant and equipment |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 2,319,388 | 2,112,033
Additions/transfers | 82,285 | 85,929
IFRS 16 transition adjustment |  | 1,734
Proceeds on pre-commercial production sales, net |  | 0
Commercial production transfers |  | 92,791
(Impairment) reversal |  | 11,690
Write-down of assets | 0 | (1,979)
Other movements/transfers | 22,371 | 33,335
Transfer to assets held for sale |  | (11,690)
Disposals | (10,297) | (4,455)
Ending balance | 2,413,747 | 2,319,388
Cost | Capital works in progress |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 83,078 | 109,361
Additions/transfers | 61,135 | 19,735
IFRS 16 transition adjustment |  | 90
Proceeds on pre-commercial production sales, net |  | 0
Commercial production transfers |  | 0
(Impairment) reversal |  | (15,268)
Write-down of assets | (40,030) | 0
Other movements/transfers | (20,594) | (30,103)
Transfer to assets held for sale |  | 0
Disposals | (76) | (737)
Ending balance | 83,513 | 83,078
Cost | Mineral properties |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 4,103,005 | 4,169,157
Additions/transfers | 55,971 | 68,794
IFRS 16 transition adjustment |  | 0
Proceeds on pre-commercial production sales, net |  | (12,159)
Commercial production transfers |  | (119,861)
(Impairment) reversal |  | 0
Write-down of assets | 0 | 0
Other movements/transfers | (2,217) | (505)
Transfer to assets held for sale |  | 0
Disposals | 0 | (2,421)
Ending balance | 4,156,759 | 4,103,005
Cost | Capitalized Evaluation |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 96,707 | 93,459
Additions/transfers | 2,115 | 3,393
IFRS 16 transition adjustment |  | 0
Proceeds on pre-commercial production sales, net |  | 0
Commercial production transfers |  | 0
(Impairment) reversal |  | 0
Write-down of assets | 0 | (16)
Other movements/transfers | (28) | (129)
Transfer to assets held for sale |  | 0
Disposals | (102) | 0
Ending balance | 98,692 | 96,707
Accumulated depreciation |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | (2,756,487) | (2,687,778)
(Impairment) reversal |  | 100,492
Other movements/transfers | (1,863) | (1,042)
Disposals | 4,049 | 2,065
Depreciation for the year | (258,604) | (170,224)
Ending balance | (3,012,905) | (2,756,487)
Accumulated depreciation | Land and buildings |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | (58,778) | (47,974)
(Impairment) reversal |  | 0
Other movements/transfers | (125) | (206)
Disposals | 54 | 7
Depreciation for the year | (13,898) | (10,605)
Ending balance | (72,747) | (58,778)
Accumulated depreciation | Plant and equipment |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | (1,024,583) | (1,008,763)
(Impairment) reversal |  | 90,825
Other movements/transfers | (1,985) | (1,049)
Disposals | 3,880 | 2,058
Depreciation for the year | (159,759) | (107,654)
Ending balance | (1,182,447) | (1,024,583)
Accumulated depreciation | Capital works in progress |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 0 | 0
(Impairment) reversal |  | 0
Other movements/transfers | 0 | 0
Disposals | 0 | 0
Depreciation for the year | 0 | 0
Ending balance | 0 | 0
Accumulated depreciation | Mineral properties |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | (1,673,126) | (1,631,041)
(Impairment) reversal |  | 9,667
Other movements/transfers | 247 | 213
Disposals | 115 | 0
Depreciation for the year | (84,947) | (51,965)
Ending balance | (1,757,711) | (1,673,126)
Accumulated depreciation | Capitalized Evaluation |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning balance | 0 | 0
(Impairment) reversal |  | 0
Other movements/transfers | 0 | 0
Disposals | 0 | 0
Depreciation for the year | 0 | 0
Ending balance | $ 0 | $ 0

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