Anaconda Copper Mining Co. smelter and wire mill
Anaconda Copper Mining Co. smelter and wire mill
Black Eagle Dam, Great Falls
Electrolytic zinc room, Great Falls
American Smelting and Refining Co., Montana
Leonard Mine, Butte
Anaconda Copper Mining Co. smelter and wire mill
Anaconda Copper Mining Co. smelter and wire mill
Anaconda Copper Mining Co. smelter and wire mill
Anaconda Copper Mining Co. smelter and wire mill