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v3.23.4

Significant accounting policies (Tables) | 6 Months Ended
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Jun. 30, 2023
Significant accounting policies |
Schedule of estimated useful lives | ​
​ | ​ | ​ | ​
Buildings |  | 10 – 45 years / Straight - line |
Freehold land | ​ | Not depreciated | ​
Plant and equipment | ​ | 3 – 30 years / UOP | ​
ROU asset | ​ | 2 – 30 years | ​
Mine development | ​ | UOP | ​

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