12,000 compound pump, Calumet and Hecla stamp mill, Lake Linden, Mich., "G 3307" on negative., Detroit Publishing Co. no. 019063., Gift; State Historical Society of Colorado; 1949, Pumps. , Industrial facilities. , Copper industry. , United States, Michigan, Lake Linden.

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Keywords: ., copper, facilities., industrial, industry., pumps., st, united