
November 1942. Bingham Canyon, Utah. "View of the Utah Copper Company open-pit mine works at Carr Fork, as seen from the railroad." Note the ore cars on the tracks into the pit. 4x5 Kodachrome transparency by Andreas Feininger for the Office of War Information. Library of Congress. View full size.
Motive power appears to have been electric steeplecabs. There are some rail-mounted objects other than the hoppers and from what I can make out, they look like that type of loco.
Impressive site........that is certainly a BIG open-cut.