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Exploration in operating units (Tables)

12 Months Ended

Dec. 31, 2021

Exploration in operating units

Schedule of detailed information about exploration and evaluation assets

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​	​	​	​	​	​	​
​		2021		2020		2019
​	​	US$(000)	​	US$(000)	​	US$(000)
​	​	​	​	​	​	​
Beginning balance of finished goods and products in process, net of depreciation and amortization		1,296		444		2,837
​	​	​	​	​	​	​
Services provided by third parties		45,437		20,406		33,591
Direct labor		3,891		3,361		1,747
Consumption of materials and supplies	​	3,839	​	1,426	​	3,712
Short-term and low-value lease		2,641		766		1,186
Electricity and water		834		471		905
Maintenance and repair		165		9		10
Transport		108		12		71
Purchase of land		—		2,162		—
Other		237		283		548
Total exploration in operating units		57,152		28,896		41,770
Final balance of products in process and finished goods, net of depreciation and amortization		(2,036)		(1,296)		(444)
​	​	​	​	​	​	​
​		56,412		28,044		44,163

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The entire disclosure for exploration and evaluation assets.

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