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Property, plant and equipment (Tables) | 12 Months Ended
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Dec. 31, 2024
Disclosure of detailed information about property, plant and equipment [abstract] |
Schedule of property, plant and equipment |
Description of types of property, plant and equipment |  | As of December 31, 2024 |  | As of December 31, 2023
|  | ThUS$ |  | ThUS$
Property, plant and equipment, net |  |  |  |
Land |  | 24,698 |  |  | 23,481 |
Buildings |  | 340,807 |  |  | 285,487 |
Other property, plant and equipment |  | 135,091 |  |  | 62,739 |
Transport equipment |  | 8,125 |  |  | 9,165 |
Supplies and accessories |  | 4,405 |  |  | 4,139 |
Office equipment |  | 1,435 |  |  | 1,158 |
Network and communication equipment |  | 1,518 |  |  | 1,605 |
Mining assets |  | 162,074 |  |  | 154,715 |
IT equipment |  | 5,281 |  |  | 2,092 |
Energy generating assets |  | 2,269 |  |  | 2,893 |
Constructions in progress |  | 1,957,128 |  |  | 1,834,041 |
Machinery, plant and equipment |  | 1,790,814 |  |  | 1,228,422 |
Total |  | 4,433,645 |  |  | 3,609,937 |
Property, plant and equipment, gross |  |  |  |
Land |  | 24,698 |  |  | 23,481 |
Buildings |  | 947,585 |  |  | 851,706 |
Other property, plant and equipment |  | 378,013 |  |  | 291,053 |
Transport equipment |  | 21,737 |  |  | 22,143 |
Supplies and accessories |  | 32,863 |  |  | 31,132 |
Office equipment |  | 13,820 |  |  | 13,346 |
Network and communication equipment |  | 11,411 |  |  | 11,644 |
Mining assets |  | 370,504 |  |  | 341,837 |
IT equipment |  | 33,819 |  |  | 29,384 |
Energy generating assets |  | 38,929 |  |  | 38,929 |
Constructions in progress |  | 1,957,128 |  |  | 1,834,041 |
Machinery, plant and equipment |  | 4,989,892 |  |  | 4,189,794 |
Total |  | 8,820,399 |  |  | 7,678,490 |
Accumulated depreciation and value impairment of property, plant and equipment, total |  |  |  |
Accumulated depreciation and impairment of buildings |  | (606,778) |  |  | (566,219) |
Accumulated depreciation and impairment of other property, plant and equipment |  | (242,922) |  |  | (228,314) |
Accumulated depreciation and impairment of transport equipment |  | (13,612) |  |  | (12,978) |
Accumulated depreciation and impairment of supplies and accessories |  | (28,458) |  |  | (26,993) |
Accumulated depreciation and impairment of office equipment |  | (12,385) |  |  | (12,188) |
Accumulated depreciation and impairment of network and communication equipment |  | (9,893) |  |  | (10,039) |
Accumulated depreciation and impairment of mining assets |  | (208,430) |  |  | (187,122) |
Accumulated depreciation and impairment of IT equipment |  | (28,538) |  |  | (27,292) |
Accumulated depreciation and impairment of energy generating assets |  | (36,660) |  |  | (36,036) |
Accumulated depreciation and impairment of machinery, plant and equipment |  | (3,199,078) |  |  | (2,961,372) |
Total |  | (4,386,754) |  |  | (4,068,553) |
Description of classes of property, plant and equipment |  | As of December 31, 2024 |  | As of December 31, 2023
|  | ThUS$ |  | ThUS$
Property, plant and equipment, net |  |  |  |
Pumps |  | 133,863 |  |  | 61,385 |
Conveyor Belt |  | 15,622 |  |  | 16,589 |
Crystallizer |  | 60,888 |  |  | 56,930 |
Plant Equipment |  | 332,127 |  |  | 285,653 |
Tanks |  | 62,657 |  |  | 39,422 |
Filter |  | 79,456 |  |  | 69,246 |
Electrical equipment/facilities |  | 149,728 |  |  | 110,255 |
Other Property, Plant & Equipment |  | 326,923 |  |  | 68,967 |
Site Closure |  | 34,828 |  |  | 40,696 |
Piping |  | 207,595 |  |  | 142,013 |
Well |  | 167,942 |  |  | 156,621 |
Pond |  | 36,627 |  |  | 34,957 |
Spare Parts (1) |  | 182,558 |  |  | 145,688 |
Total |  | 1,790,814 |  |  | 1,228,422 |
________________________________________________ (1)The reconciliation of the spare parts provisions as of December 31, 2024 and 2023 is as follows:
Reconciliation |  | As of December 31, 2024 |  | As of December 31, 2023
|  | ThUS$ |  | ThUS$
Opening balance |  | 58,600 |  | 52,072
Increase in provision |  | 3,913 |  | 6,528
Closing balance |  | 62,513 |  | 58,600
Schedule of reconciliation of changes in property, plant and equipment | Reconciliation of changes in property, plant and equipment by class as of December 31, 2024 and 2023:
Reconciliation of changes in property, plant and equipment by class as of |  | Land |  | Buildings |  | Other property, plant and equipment |  | Transport equipment |  | Supplies and accessories |  | Equipment office |  | Network and communication equipment |  | Mining assets |  | IT equipment |  | Energy generating assets |  | Assets under construction |  | Machinery, plant and equipment |  | Total
|  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$
At January 1, 2024 |  | 23,481 |  |  | 285,487 |  |  | 62,739 |  |  | 9,165 |  |  | 4,139 |  |  | 1,158 |  |  | 1,605 |  |  | 154,715 |  |  | 2,092 |  |  | 2,893 |  |  | 1,834,041 |  |  | 1,228,422 |  |  | 3,609,937 |
Additions |  | — |  |  | 9,831 |  |  | 21,109 |  |  | — |  |  | 99 |  |  | 230 |  |  | 3 |  |  | 6,723 |  |  | 2,432 |  |  | — |  |  | 770,525 |  |  | 174,142 |  |  | 985,094 |
Disposals |  | — |  |  | — |  |  | — |  |  | (135) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (135) |
Depreciation for the year |  | — |  |  | (40,570) |  |  | (14,781) |  |  | (905) |  |  | (1,510) |  |  | (291) |  |  | (582) |  |  | (21,308) |  |  | (2,261) |  |  | (625) |  |  |  |  | (229,168) |  |  | (312,001) |
Impairment (2) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (10,759) |  |  | (10,759) |
Increase (decrease) in foreign currency translation difference |  | — |  |  | (180) |  |  | (1) |  |  | — |  |  | (3) |  |  | — |  |  | — |  |  | — |  |  | (1) |  |  | — |  |  | (305) |  |  | (646) |  |  | (1,136) |
Reclassifications |  | (116) |  |  | 58,986 |  |  | 65,361 |  |  | — |  |  | 1,314 |  |  | 278 |  |  | 489 |  |  | 21,944 |  |  | 3,231 |  |  | — |  |  | (662,051) |  |  | 510,564 |  |  | — |
Other increases (decreases) (1) |  | 1,333 |  |  | 27,253 |  |  | 664 |  |  | — |  |  | 366 |  |  | 60 |  |  | 3 |  |  | — |  |  | (212) |  |  | 1 |  |  | 14,918 |  |  | 118,259 |  |  | 162,645 |
Decreases for classification as held for sale |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Subtotal |  | 1,217 |  |  | 55,320 |  |  | 72,352 |  |  | (1,040) |  |  | 266 |  |  | 277 |  |  | (87) |  |  | 7,359 |  |  | 3,189 |  |  | (624) |  |  | 123,087 |  |  | 562,392 |  |  | 823,708 |
As of December 31, 2024 |  | 24,698 |  |  | 340,807 |  |  | 135,091 |  |  | 8,125 |  |  | 4,405 |  |  | 1,435 |  |  | 1,518 |  |  | 162,074 |  |  | 5,281 |  |  | 2,269 |  |  | 1,957,128 |  |  | 1,790,814 |  |  | 4,433,645 |
Historical cost |  | 24,698 |  |  | 947,585 |  |  | 378,013 |  |  | 21,737 |  |  | 32,863 |  |  | 13,820 |  |  | 11,411 |  |  | 370,504 |  |  | 33,819 |  |  | 38,929 |  |  | 1,957,128 |  |  | 4,989,892 |  |  | 8,820,399 |
Accumulated depreciation |  | — |  |  | (606,778) |  |  | (242,922) |  |  | (13,612) |  |  | (28,458) |  |  | (12,385) |  |  | (9,893) |  |  | (208,430) |  |  | (28,538) |  |  | (36,660) |  |  | — |  |  | (3,199,078) |  |  | (4,386,754) |
At January 1, 2023 |  | 23,482 |  |  | 273,913 |  |  | 34,960 |  |  | 9,487 |  |  | 4,798 |  |  | 1,355 |  |  | 1,872 |  |  | 60,284 |  |  | 3,147 |  |  | 3,253 |  |  | 1,328,508 |  |  | 981,779 |  |  | 2,726,838 |
Additions |  | — |  |  | — |  |  | 545 |  |  | — |  |  | 52 |  |  | 8 |  |  | 208 |  |  | — |  |  | 207 |  |  | — |  |  | 1,091,840 |  |  | 2,347 |  |  | 1,095,207 |
Disposals |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (1) |  |  | — |  |  | — |  |  | (17) |  |  | (18) |
Depreciation for the year |  | — |  |  | (37,315) |  |  | (13,337) |  |  | (1,155) |  |  | (1,809) |  |  | (230) |  |  | (670) |  |  | (16,603) |  |  | (890) |  |  | (749) |  |  | — |  |  | (179,989) |  |  | (252,747) |
Impairment (2) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (47,059) |  |  | (47,059) |
Increase (decrease) in foreign currency translation difference |  | (6) |  |  | (7) |  |  | (35) |  |  | (1) |  |  | — |  |  | (7) |  |  | — |  |  | — |  |  | (3) |  |  | — |  |  | — |  |  | (39) |  |  | (98) |
Reclassifications |  | — |  |  | 48,677 |  |  | 40,657 |  |  | 801 |  |  | 1,099 |  |  | 31 |  |  | 195 |  |  | 111,059 |  |  | (447) |  |  | 389 |  |  | (588,635) |  |  | 386,174 |  |  | — |
Other increases (decreases) (1) |  | 5 |  |  | 219 |  |  | (51) |  |  | 33 |  |  | (1) |  |  | 1 |  |  | — |  |  | (25) |  |  | 79 |  |  | — |  |  | 2,328 |  |  | 85,226 |  |  | 87,814 |
Decreases for classification as held for sale |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Subtotal |  | (1) |  |  | 11,574 |  |  | 27,779 |  |  | (322) |  |  | (659) |  |  | (197) |  |  | (267) |  |  | 94,431 |  |  | (1,055) |  |  | (360) |  |  | 505,533 |  |  | 246,643 |  |  | 883,099 |
As of December 31, 2023 |  | 23,481 |  |  | 285,487 |  |  | 62,739 |  |  | 9,165 |  |  | 4,139 |  |  | 1,158 |  |  | 1,605 |  |  | 154,715 |  |  | 2,092 |  |  | 2,893 |  |  | 1,834,041 |  |  | 1,228,422 |  |  | 3,609,937 |
Historical cost |  | 23,481 |  |  | 851,706 |  |  | 291,053 |  |  | 22,143 |  |  | 31,132 |  |  | 13,346 |  |  | 11,644 |  |  | 341,837 |  |  | 29,384 |  |  | 38,929 |  |  | 1,834,041 |  |  | 4,189,794 |  |  | 7,678,490 |
Accumulated depreciation |  | — |  |  | (566,219) |  |  | (228,314) |  |  | (12,978) |  |  | (26,993) |  |  | (12,188) |  |  | (10,039) |  |  | (187,122) |  |  | (27,292) |  |  | (36,036) |  |  | — |  |  | (2,961,372) |  |  | (4,068,553) |
(1)The net balance of “Other Increases (Decreases)” corresponds to all those items that are reclassified to or from “Property, Plant and Equipment”, They can have the following origin: (i) work in progress which is expensed to the statement of income, forming part of operating costs or other expenses per function, as appropriate; (ii) the variation representing the purchase and use of materials and spare parts; (iii) projects corresponding mainly to exploration expenditures and ground studies that are reclassified to the item other non-current financial assets; (iv) software that is reclassified to “Intangibles (v) Provisions related to the investment plan and assets related to closing the site. (2)See note 21.5. This impairment corresponds to identified assets identified that will not be used in the operation due to their specific characteristics relating to the iodine and nitrate segments.
Schedule of costs for capitalized interest of property, plant and equipment | The rates and costs for capitalized interest of property, plant and equipment are detailed as follows:
Costs of capitalized interest |  | As of December 31, 2024 |  | As of December 31, 2023
|  | ThUS$ |  | ThUS$
Weighted average capitalization rate of capitalized interest costs |  | 5 | % |  | 5 | %
Amount of interest cost capitalized |  | 67,126 |  |  | 43,331 |

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