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Gains (losses) from operating activities in the statement of income, included according to their nature (Details 2) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Statement [Line Items] |  |  |
Depreciation of Right-of-use Assets (contracts under IFRS 16) | $ (8,431) | $ (7,951) |
Expenses related to Variable Parts Leases (IFRS 16) | (1,133,000) | (1,096,000) |
Total | (1,334,321) | (1,383,603) | $ (1,485,631)
Cost Of Sales [Member] |  |  |
Statement [Line Items] |  |  |
Remuneration and benefits to employees | (287,877) | (271,912) | (260,869)
Raw material and supplies | (178,956) | (178,493) | (203,571)
Depreciation expense | (182,410) | (188,157) | (212,641)
Depreciation of Right-of-use Assets (contracts under IFRS 16) | (5,814) | (5,450) | 0
Amortization expense | (12,655) | (5,102) | (6,376)
Investment plan expenses | (14,286) | (18,367) | (11,860)
Provision for site closure | (911) | (911) | (2,045)
Provision for materials, spare parts and supplies | 640 | (7,500) | 1,721
Contractors | (142,001) | (120,793) | (120,923)
Operating leases | (57,461) | (47,708) | (37,245)
Mining concessions | (6,645) | (7,856) | (8,168)
Operations transport | (68,730) | (56,376) | (64,352)
Freight and product transport costs | (52,156) | (46,264) | (51,387)
Purchase of products from third parties | (224,115) | (210,583) | (182,695)
Insurance | (17,657) | (16,968) | (11,923)
CORFO right | (74,418) | (143,861) | (182,954)
Export costs | (71,718) | (75,908) | (107,418)
Expenses related to Variable Parts Leases (IFRS 16) | (1,133) | (1,037) | 0
Variation in inventory | 97,467 | 52,557 | 20,597
Variation in inventory provision | 7,244 | 17,107 | (8,997)
Other expenses, by nature | (40,729) | (50,021) | (34,525)
Total | $ (1,334,321) | $ (1,383,603) | $ (1,485,631)

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- Definition The amount of amortisation expense. Amortisation is the systematic allocation of depreciable amounts of intangible assets over their useful lives. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of costs relating to expenses directly or indirectly attributed to the goods or services sold, which may include, but are not limited to, costs previously included in the measurement of inventory that has now been sold, unallocated production overheads and abnormal amounts of production costs of inventories. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 99 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_99&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 103 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_103&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of depreciation expense. Depreciation is the systematic allocation of depreciable amounts of tangible assets over their useful lives. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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