Browse TRAIL Inventories

Progress reports - metallurgical division.

Concentration of manganese ores from Gila, Greenlee, and Graham counties, Ariz.

Concentration of gravity tailings from the Grasselli deposit, Park City, Utah

Concentration of oxide and silicate manganese ores from Siskiyou and Mendocino Counties, Northern California

Concentration of oxide manganese ores from northeastern Nevada (Caviglia-Vietti, Berning, and Reed-Parker deposits)

Electrochemical recovery of high-purity nickel and cobalt from crude nickel and ferronickel

Recovery of precious metals from electronic scrap

Aqueous reduction of chalcopyrite concentrate with metals

Prompt copper recovery from mine strip waste


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