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v3.25.1

Impairment of long-lived assets (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Notes and other explanatory information [abstract] |
Schedule of impairment (losses) reversals |
Schedule of impairment (losses) reversals |  |  |
Impairment (losses) reversals | 2024 |  | 2023
Magistral Project | (58,435) |  | -
Cerro Pasco CGU | 22,206 |  | (42,660)
Morro Agudo | 10,291 |  | (59,002)
Pukaqaqa Project | 3,978 |  | -
Others individual assets | (10,910) |  | (12,976)
Total | (32,870) |  | (114,643)
Schedule of key assumptions used in impairment test |
Schedule of key assumptions used in impairment test |  |  |
| 2024 | 2023 | 2022
Long-term zinc price (USD/t) | 2,930 | 2,800 | 2,787
Discount rate (Peru) | 7.08% | 7.22% | 6.93%
Discount rate (Brazil) | 7.64% | 8.02% | 8.03%
Exchange rate (BRL x USD) | 5.66 | 4.84 | 5.22
Brownfield projects - LOM (years) | From 3 to 25 | From 4 to 21 | From 5 to 24
Schedule of impairment reversal cerro pasco CGU |
Schedule of impairment reversal cerro pasco CGU |  |  |
| Carrying amount prior to impairment reversal | Impairment reversal | Carrying amount after impairment reversal
Property, plant and equipment | 223,788 | 12,400 | 236,188
Intangible assets | 176,967 | 9,806 | 186,773
Other net liabilities | (114,152) | - | (114,152)
| 286,603 | 22,206 | 308,809
Schedule of Sensitivity Analysis |
Schedule of Sensitivity Analysis |  |  |  |  |  |  |  |  |  |
CGU | Excess over recoverable amount |  | Decrease in Long term Zinc (USD/t) | Increase in WACC | Appreciation of BRL over USD (i)
| Change |  | Price | Change |  | Rate | Change | Price
Juiz de fora | 146,341 |  | (23.33%) |  | 2,246 | 71.13% |  | 13.08% | (13.00%) | 4.92
Cajamarquilla | 681,438 |  | (20.01%) |  | 2,344 | 94.42% |  | 13.77% | - | -
Cerro Lindo | 269,150 |  | (24.81%) |  | 2,203 | 169.19% |  | 19.07% | - | -
Mining Peru | 82,740 |  | (7.43%) |  | 2,712 | 38.35% |  | 9.80% | - | -
Aripuanã | 305,093 |  | (15.43%) |  | 2,478 | 56.34% |  | 11.95% | (13.88%) | 4.87

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