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
Royalite No. 26 oil well
British American Oil Co. refinery, Coutts
Anaconda Copper Mining Co. smelter and wire mill
Anaconda Copper Mining Co. smelter and wire mill