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Supplemental cash flow information (Tables) | 12 Months Ended
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Dec. 31, 2022
SUPPLEMENTAL CASH FLOW INFORMATION [Abstract] |
Schedule of supplemental cash flow information | Supplemental cash flow information (included within operating activities) is as follows:
|  | Year ended December 31
(in millions of U.S. dollars) |  |  | 2022 | 2021
CHANGE IN NON-CASH OPERATING WORKING CAPITAL |  |  |  |
Trade and other receivables |  |  | (3.5) |  | 9.5 |
Inventories |  |  | (16.0) |  | (4.8) |
Prepaid expenses and other |  |  | 3.5 |  | 0.2 |
Trade and other payables |  |  | 25.1 |  | (3.9) |
Total change in non-cash operating working capital |  |  | 9.1 |  | 1.0 |
|  | Year ended December 31
(in millions of U.S. dollars) |  |  | 2022 | 2021
OTHER NON-CASH ADJUSTMENTS |  |  |  |
Unrealized loss on revaluation of foreign exchange forward contracts |  |  | 0.8 |  | — |
Unrealized loss on concentrate contracts |  |  | 1.8 |  | 0.6 |
Equity settled share-based payment expense |  |  | 1.0 |  | 1.5 |
Loss on disposal of assets |  |  | 2.0 |  | 2.0 |
Loss on revaluation of copper price option contracts |  |  | — |  | 1.5 |
Unrealized (gain) loss on revaluation of non-current derivative financial instruments |  |  | (3.0) |  | 62.9 |
Loss on revaluation of CSP’s reclamation and closure cost obligation |  |  | 2.0 |  | 4.5 |
Inventory provision |  |  | 4.0 |  | — |
Loss on revaluation of investments |  |  | 28.0 |  | 21.3 |
Total other non-cash adjustments |  |  | 36.6 |  | 94.3 |

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