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Reclamation and closure cost obligations (Tables) | 12 Months Ended
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Dec. 31, 2023
RECLAMATION AND CLOSURE COST OBLIGATIONS [Abstract] |
Schedule of reclamation and closure cost obligations | Changes to the reclamation and closure cost obligations are as follows:
(in millions of U.S. dollars) | Rainy River | New Afton | Cerro San Pedro (1) | Total
CHANGES TO RECLAMATION AND CLOSURE COST OBLIGATIONS
Balance – December 31, 2021 | 109.4 |  | 49.3 |  | 1.5 |  | 160.2 |
Reclamation expenditures | (1.7) |  | — |  | (2.3) |  | (4.0) |
Unwinding of discount | 2.3 |  | 0.9 |  | — |  | 3.2 |
Revisions to expected cash flows | (16.6) |  | (15.6) |  | 2.1 |  | (30.1) |
Foreign exchange movement | (5.8) |  | (2.3) |  | — |  | (8.1) |
Balance – December 31, 2022 | 87.6 |  | 32.3 |  | 1.3 |  | 121.2 |
Less: current portion of closure costs (Note 7) | (0.4) |  | — |  | (1.3) |  | (1.7) |
Non-current portion of closure costs | 87.2 |  | 32.3 |  | — |  | 119.5 |
Balance – December 31, 2022 | 87.6 |  | 32.3 |  | 1.3 |  | 121.2 |
Reclamation expenditures | (0.5) |  | — |  | (1.9) |  | (2.4) |
Unwinding of discount | 2.7 |  | 0.9 |  | — |  | 3.6 |
Revisions to expected cash flows | (0.8) |  | (0.8) |  | 0.8 |  | (0.8) |
Foreign exchange movement | 2.0 |  | 0.7 |  | (0.1) |  | 2.6 |
Balance – December 31, 2023 | 91.0 |  | 33.1 |  | 0.1 |  | 124.2 |
Less: current portion of closure costs (Note 7) | (0.8) |  | — |  | — |  | (0.8) |
Non-current portion of closure costs | 90.2 |  | 33.1 |  | 0.1 |  | 123.4 |
1.CSP's closure cost liabilities were substantially completed during the fourth quarter of 2023. The remaining post closure activities of monitoring and environmental consulting will be expensed to other gains and losses.

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