FM
Twin Buttes
Mining
Type
Exploration
Status
🇺🇸 United States, Arizona
Country
Project information
As at 31 December 2025
Aggregation level:
Asset
Aggregation level:
Asset
Report standard:
Sec S K 1300
Report standard:
Sec S K 1300
Ownership %:
100
Ownership %:
100
Operator:
Yes
Operator:
Yes
Extraction:
Open Pit
Extraction:
Open Pit
Description
As at 31 December 2025
Wholly owned non-operating copper property adjacent to the Sierrita operation in Pima County, Arizona (its EW facility plates Sierrita cathode). Total mineral resources (exclusive of reserves): milling 140 Mt at 0.67% Cu (2.1 blb) and leaching 75 Mt at 0.24% Cu (0.4 blb).
Mining metrics
As at 31 December 2025
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Reserves & resources — detail
As at 31 December 2025
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