| Thumbnail | Subject(s) | Description | Add to Shoebox |
|---|---|---|---|
|
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 |