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Calumet & Hecla Smelter

Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Manpower, Labor, Skilled Labor, Smelting Calumet & Hecla Smelter Electric Crane [Several men work with the crane]

Scanned: December 12, 2006


Calumet & Hecla Smelter

Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Manpower, Labor, Skilled Labor, Smelting Calumet & Hecla Smelter Electrolytic Plant, Sub Station [Interior view of the electrolytic plant]

Scanned: December 12, 2006


Calumet & Hecla Smelter

Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Manpower, Labor, Skilled Labor, Smelting Calumet & Hecla Smelter Electrolytic Plant, Sub Station [Three men work at the station]

Scanned: December 12, 2006