- Chalcocite mining and/or beneficiating
- Chalcopyrite mining and/or beneficiating
- Copper beneficiating plants
- Copper ore concentrates recovery
- Copper ore mine site development for own account
- Copper ores mining and/or beneficiating
- Copper-water precipitates
- Cuprite mining and/or beneficiating
- Nickel concentrates recovery
- Nickel ore beneficiating plants
- Nickel ore mine site development for own account
- Nickel ores mining and/or beneficiating
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