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Exploration in operating units (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Beginning balance of finished goods and products in process, net of depreciation and amortization | $ 988 | $ 2,036 | $ 1,296
Exploration in operating units | 49,229 | 80,796 | 56,412
Total exploration in operating units | 48,790 | 79,748 | 57,152
Final balance of finished goods and products in process | (549) | (1,408) | (2,036)
Write - off of products in process | 0 | 420 | 0
Final balance of products in process and finished goods, net of depreciation and amortization | (549) | (988) | (2,036)
Disbursement of exploration in operating activities | 49,229 | 80,796 | 56,412
Services provided by third parties |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 35,785 | 51,912 | 45,437
Direct labor |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 6,357 | 7,097 | 3,891
Consumption of materials and supplies |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 2,694 | 4,502 | 3,839
Short-term and low-value lease |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 1,791 | 5,016 | 2,641
Transport |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 720 | 470 | 108
Electricity and water |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 237 | 72 | 834
Maintenance and repairment |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 66 | 211 | 165
Purchase of land |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 0 | 10,066 | 0
Other |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | $ 1,140 | $ 402 | $ 237

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