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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
CHANGE IN NON-CASH OPERATING WORKING CAPITAL |  |
Trade and other receivables | $ 4.4 | $ (5.4)
Inventories | 16.2 | (53.1)
Prepaid expenses and other | (2.3) | (0.6)
Trade and other payables | 7.6 | (12.5)
Total change in non-cash operating working capital | 25.9 | (71.6)
OTHER NON-CASH ADJUSTMENTS |  |
Unrealized loss on concentrate contracts | (0.2) | 0.7
Equity settled share-based payment expense | 0.7 | 2.7
Loss on disposal of assets | 1.2 | 0.3
Settlement and loss on revaluation of gold price option contracts | 21.7 | 4.8
Unrealized gain on gold stream obligation | (20.1) | (11.7)
Settlement (gain) loss on revaluation of copper price option contracts | 0.7 | (4.8)
Revaluation of CSP's reclamation and closure cost obligation | (0.6) | 1.0
Inventory write-downs | 14.1 | 15.8
Other non-cash adjustments | 0.0 | 0.2
Total other non-cash adjustments | $ 17.5 | $ 9.0

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- Definition Adjustments for increase (decrease) in trade and other payables to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Trade and other payables; Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_20&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of expense arising from equity-settled share-based payment transactions in which the goods or services received did not qualify for recognition as assets. [Refer: Expense from share-based payment transactions in which goods or services received did not qualify for recognition as assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 51 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_51_a&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The gains (losses) on disposals of other non-current assets. [Refer: Other non-current assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 98 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_98&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The increase (decrease) in working capital. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_20&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Adjustments for non-cash items to reconcile profit (loss) to net cash flow from (used in) operating activities that the entity does not separately disclose in the same statement or note. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 20 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_20_b&doctype=Standard -URIDate 2019-03-27 + Details
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