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Twin Metals project goes dry, decides against tailings dam

Proposed Minnesota copper-nickel mine to dry-stack tailings

Nia Kajastie
The Twin Metals project is focused on designing, constructing and operating an underground copper, nickel, platinum, palladium, gold and silver mine

The Twin Metals project is focused on designing, constructing and operating an underground copper, nickel, platinum, palladium, gold and silver mine

In May, Twin Metals, a wholly owned subsidiary of Chilean mining group Antofagasta, had two of its federal mineral leases renewed by the US Bureau of Land Management, following their reinstatement under...

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