| Schedule of property plant and equipment, net of related accumulated depreciation and impairment. |
| | | | | | | | | | | | | | | | | | | | | For the year ended December 31, 2025 | | | | | | | | | Property, Plant | | | | Other Items of | | Other Items | | Other Items | | | | | | | | | Other Fixtures, | | and Equipment | | | | Property, | | of Leased | | of Leased | | | | | Land and | | Plant and | | Tools and | | in the Course of | | Mineral | | Plant and | | Land and | | Plant and | | | | | Buildings | | Machinery | | Furniture | | Construction | | Reserves | | Equipment | | Buildings | | machinery | | Total | | | US$'000 | | US$'000 | | US$'000 | | US$'000 | | US$'000 | | US$'000 | | US$'000 | | US$'000 | | US$'000 | Acquisition cost: | | | | | | | | | | | | | | | | | | | Balance at January 1, 2025 | | 226,048 | | 1,214,411 | | 17,477 | | 66,032 | | 69,714 | | 29,712 | | 28,436 | | 51,524 | | 1,703,354 | Additions | | 38 | | 545 | | 521 | | 66,987 | | — | | 516 | | 7,173 | | 7,635 | | 83,415 | Disposals and other | | (2,116) | | (47,295) | | (775) | | (57) | | — | | (37) | | (3,562) | | (4,727) | | (58,569) | Transfers from/(to) other accounts | | 2,032 | | 75,586 | | 289 | | (78,529) | | (3,377) | | 3,357 | | — | | — | | (642) | Exchange differences | | 22,841 | | 93,792 | | 2,177 | | 5,333 | | 365 | | 1,247 | | 2,812 | | 4,065 | | 132,632 | Balance at December 31, 2025 | | 248,843 | | 1,337,039 | | 19,689 | | 59,766 | | 66,702 | | 34,795 | | 34,859 | | 58,497 | | 1,860,190 | | | | | | | | | | | | | | | | | | | | Accumulated depreciation (Note 27.6): | | | | | | | | | | | | | | | | | | | Balance at January 1, 2025 | | (133,167) | | (801,564) | | (5,993) | | — | | (3,051) | | (10,146) | | (14,082) | | (32,204) | | (1,000,207) | Depreciation and amortization for the period | | (2,934) | | (68,832) | | (273) | | — | | (525) | | (166) | | (2,633) | | (7,672) | | (83,035) | Disposals and other | | 2,116 | | 33,455 | | 255 | | — | | — | | 37 | | 3,562 | | 4,097 | | 43,522 | Transfers from/(to) other accounts | | 64 | | 195 | | (68) | | — | | — | | — | | — | | (111) | | 80 | Exchange differences | | (11,768) | | (70,610) | | (724) | | — | | — | | (1,068) | | (1,304) | | (2,608) | | (88,082) | Balance at December 31, 2025 | | (145,689) | | (907,356) | | (6,803) | | — | | (3,576) | | (11,343) | | (14,457) | | (38,498) | | (1,127,722) | | | | | | | | | | | | | | | | | | | | Impairment (Note 27.8): | | | | | | | | | | | | | | | | | | | Balance at January 1, 2025 | | (34,319) | | (136,491) | | (2,928) | | (22,070) | | — | | (18,536) | | (827) | | (781) | | (215,951) | Impairment gain (losses) for the period | | (6,460) | | (13,547) | | (830) | | (6,680) | | — | | — | | — | | (385) | | (27,902) | Disposals and other | | — | | 14,078 | | 384 | | — | | — | | — | | — | | 630 | | 15,092 | Transfers from/(to) other accounts | | — | | (19,011) | | — | | 19,011 | | — | | — | | — | | — | | — | Exchange differences | | (2,104) | | (12,054) | | (402) | | (2,400) | | — | | (6) | | — | | (63) | | (17,029) | Balance at December 31, 2025 | | (42,883) | | (167,025) | | (3,776) | | (12,139) | | — | | (18,542) | | (827) | | (599) | | (245,790) | | | | | | | | | | | | | | | | | | | | Carrying amount at December 31, 2025 | | 60,271 | | 262,658 | | 9,110 | | 47,627 | | 63,126 | | 4,910 | | 19,575 | | 19,401 | | 486,678 |
| | | | | | | | | | | | | | | | | | | | | For the year ended 31 December 2024 | | | | | | | | | Property, Plant | | | | Other Items of | | Other Items | | Other Items | | | | | | | | | Other Fixtures, | | and Equipment | | | | Property, | | of Leased | | of Leased | | | | | Land and | | Plant and | | Tools and | | in the Course of | | Mineral | | Plant and | | Land and | | Plant and | | | | | Buildings | | Machinery | | Furniture | | Construction | | Reserves | | Equipment | | Buildings | | machinery | | Total | | | US$'000 | | US$'000 | | US$'000 | | US$'000 | | US$'000 | | US$'000 | | US$'000 | | US$'000 | | US$'000 | Acquisition cost: | | | | | | | | | | | | | | | | | | | Balance at January 1, 2024 | | 181,037 | | 1,197,462 | | 7,205 | | 145,206 | | 67,091 | | 33,706 | | 26,071 | | 41,314 | | 1,699,092 | Additions | | 65 | | 3,415 | | 5,693 | | 76,097 | | — | | 150 | | 3,850 | | 13,201 | | 102,471 | Disposals and other | | (97) | | (28,173) | | (993) | | — | | — | | — | | (267) | | (4,579) | | (34,109) | Transfers from/(to) other accounts | | 51,924 | | 87,623 | | 6,369 | | (148,021) | | 2,700 | | (3,813) | | — | | 3,218 | | — | Exchange differences | | (6,881) | | (45,916) | | (797) | | (7,250) | | (77) | | (331) | | (1,218) | | (1,630) | | (64,100) | Balance at December 31, 2025 | | 226,048 | | 1,214,411 | | 17,477 | | 66,032 | | 69,714 | | 29,712 | | 28,436 | | 51,524 | | 1,703,354 | | | | | | | | | | | | | | | | | | | | Accumulated depreciation (Note 27.6): | | | | | | | | | | | | | | | | | | | Balance at January 1, 2024 | | (119,009) | | (821,272) | | (1,149) | | — | | (2,840) | | (10,317) | | (12,296) | | (30,244) | | (997,127) | Depreciation and amortization for the period | | (3,003) | | (60,411) | | (389) | | — | | (211) | | (182) | | (2,582) | | (8,211) | | (74,989) | Disposals and other | | 101 | | 25,847 | | 165 | | — | | — | | — | | 267 | | 4,579 | | 30,959 | Transfers from/(to) other accounts | | (15,742) | | 20,285 | | (4,981) | | — | | — | | — | | — | | 438 | | — | Exchange differences | | 4,486 | | 33,987 | | 361 | | — | | — | | 353 | | 529 | | 1,234 | | 40,950 | Balance at December 31, 2024 | | (133,167) | | (801,564) | | (5,993) | | — | | (3,051) | | (10,146) | | (14,082) | | (32,204) | | (1,000,207) | | | | | | | | | | | | | | | | | | | | Impairment (Note 27.8): | | | | | | | | | | | | | | | | | | | Balance at January 1, 2024 | | (22,680) | | (77,617) | | (2,752) | | (78,150) | | — | | (18,542) | | (827) | | — | | (200,568) | Impairment gain (losses) for the period | | (888) | | (18,105) | | (1,352) | | (3,784) | | — | | — | | — | | (811) | | (24,940) | Disposals and other | | — | | 1,342 | | — | | — | | — | | — | | — | | — | | 1,342 | Transfers from/(to) other accounts | | (11,166) | | (45,529) | | 877 | | 55,817 | | — | | — | | — | | — | | — | Exchange differences | | 415 | | 3,418 | | 299 | | 4,047 | | — | | 6 | | — | | 30 | | 8,215 | Balance at December 31, 2024 | | (34,319) | | (136,491) | | (2,928) | | (22,070) | | — | | (18,536) | | (827) | | (781) | | (215,951) | | | | | | | | | | | | | | | | | | | | Carrying amount at December 31, 2024 | | 58,562 | | 276,356 | | 8,556 | | 43,962 | | 66,663 | | 1,030 | | 13,527 | | 18,539 | | 487,196 |
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