August 1941. "House in North Hibbing, Minnesota, on the edge of the world's largest open pit iron mine. Houses in this section are being demolished daily as mining operations expand." Medium format acetate negative by John Vachon. View full size.

August 1941. "Moving railroad track in the Mahoning pit. Hibbing, Minnesota." Medium format acetate negative by John Vachon for the Farm Security Administration. View full size.

August 1941. "Member of blasting crew at Danube Mine near Bovey, Minnesota." Medium format acetate negative by John Vachon for the Farm Security Administration. View full size.

August 1941. "Children of old Hibbing, Minnesota, the part of town which is gradually being torn down as mining operations expand, sell pieces of ore and iron range souvenirs to tourists." Acetate negative by John Vachon for the Farm Security Administration. View full size.

August 1941. "Hull-Rust-Mahoning, world's largest open pit iron mine, near Hibbing, Minnesota." Medium format acetate negative by John Vachon. View full size.

September 1939. Ducktown, Tennessee. "Copper miners on strike waiting for scabs to come out of mines." Acetate negative by Marion Post Wolcott. View full size.

July 1940. "Coal company. Benton Harbor, Michigan." Medium format acetate negative by John Vachon for the Farm Security Administration. View full size.

September 1941. "Russell Gulch, ghost mining town near Central City, Colorado." Medium format negative by Marion Post Wolcott for the Farm Security Administration. View full size.

September 1941. Central City, Colorado. "The 'Old 71' engine of the Colorado and Southern Railway, which carried ore and passenger cars from Denver to 'the richest square mile on earth'." Medium format acetate negative by Marion Post Wolcott. View full size.

September 1941. "Central City, an old mining town. Mountainous region of Central Colorado, west of Denver." Medium format acetate negative by Marion Post Wolcott. View full size.

November 1942. "Bingham Canyon, Utah. Signalman of the Utah Copper Company at its open-pit mine workings." Photo by Andreas Feininger, Office of War Information. View full size.

December 1935. "Alabama miners' houses near Birmingham." 8x10 inch nitrate negative by Walker Evans for the Resettlement Administration. View full size.

January 1939. "Abandoned store in which coal miner on relief lives. Zeigler, Illinois." Medium format negative by Arthur Rothstein for the Farm Security Administration. View full size.

Calumet, Michigan, circa 1906. "Copper mining. Hoisting engine, Tamarack No. 5 Shaft." 8x10 inch dry plate glass negative, Detroit Publishing Company. View full size.

"Colorado, 1888." Sheep Mountain from Buena Vista. Photo by John C.H. Grabill. View full size.