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Expenses | 12 Months Ended
--- | ---
Dec. 31, 2023
EXPENSES [Abstract] |
Expenses | Expenses (a) Operating expenses by nature
|  | Year ended December 31
(in millions of U.S. dollars) |  |  | 2023 | 2022
OPERATING EXPENSES BY NATURE |  |  |  |
Raw materials and consumables |  |  | 182.3 |  | 182.8 |
Salaries and employee benefits |  |  | 144.4 |  | 141.4 |
Contractors |  |  | 105.4 |  | 79.7 |
Repairs and maintenance |  |  | 67.0 |  | 51.8 |
General and administrative |  |  | 25.8 |  | 34.7 |
Leases |  |  | 4.5 |  | 4.2 |
Royalties |  |  | 8.4 |  | 8.7 |
Drilling and analytical |  |  | 6.8 |  | 6.5 |
Ore purchase costs |  |  | 6.8 |  | 6.2 |
Other |  |  | 11.3 |  | 13.9 |
Total production expenses |  |  | 562.7 |  | 529.9 |
Less: Production expenses capitalized |  |  | (112.1) |  | (147.7) |
Less: Change in inventories |  |  | (0.2) |  | 0.5 |
Total operating expenses |  |  | 450.4 |  | 382.7 |
(b) Finance costs and income
|  | Year ended December 31
(in millions of U.S. dollars) |  |  | 2023 | 2022
FINANCE INCOME |  |  |  |
Interest income |  |  | 7.5 |  | 3.8 |
FINANCE COSTS |  |  |  |
Interest on senior unsecured notes |  |  | 30.0 |  | 32.4 |
Accretion |  |  | 4.7 |  | 4.5 |
Loss on repayment of long-term debt(1) |  |  | — |  | 4.3 |
Other finance costs |  |  | 6.2 |  | 5.7 |
Total finance costs |  |  | 40.9 |  | 46.9 |
Less: amounts included in cost of qualifying assets |  |  | (27.7) |  | (19.1) |
Total finance costs |  |  | 13.2 |  | 27.8 |
1.In 2022, the Company redeemed the $100.0 million 2025 senior unsecured notes and recognized a loss on redemption. (c) Other (losses) and gains
|  | Year ended December 31
(in millions of U.S. dollars) |  |  | 2023 | 2022
OTHER (LOSSES) AND GAINS |  |  |  |
(Loss) gain on foreign exchange |  |  | (3.1) |  | 6.5 |
Loss on disposal of assets |  |  | (0.3) |  | (2.0) |
Loss on revaluation of investments |  |  | (4.4) |  | (28.0) |
Unrealized (loss) gain on revaluation of non-current derivative financial liabilities |  |  | (108.2) |  | 3.0 |
Gain (loss) on foreign exchange derivative |  |  | 3.0 |  | (2.3) |
(Loss) gain on fuel hedge swap contracts |  |  | (1.4) |  | 0.3 |
Revaluation of CSP's reclamation and closure cost obligation |  |  | (0.5) |  | (2.1) |
Other |  |  | (0.4) |  | (1.1) |
Total other losses |  |  | (115.3) |  | (25.7) |

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