Public domain
Pittsburgh, Pennsylvania (vicinity). Montour no. 4 mine of the Pittsburgh Coal Company. After coal has been shot down by blasting, a mechanical loader is rolled into the "room". Electrically driven steel arms gather the coal and a conveyor belt moves it out to a waiting car
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit linePittsburgh, Pennsylvania (vicinity). Montour no. 4 mine of the Pittsburgh Coal Company. After coal has been shot down by blasting, a mechanical loader is rolled into the "room". Electrically driven st. 1942-01-01. Collier, John, Jr., Collier, John. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
Similar works
Untitled photo, possibly related to: Pittsburgh, Pennsylvania (vicinity). Montour no. 4 mine of the Pittsburgh Coal Company. After coal has been shot down by blasting, a mechanical loader is rolled into the "room". Electrically driven steel arms gather the coal and a conveyor belt moves it out to a
Under-cutting machine. Old Ben number eight. West Frankfort, Illinois (see 26980-D)
Untitled photo, possibly related to: Anaconda smelter, Montana. Anaconda Copper Mining Company. Two workmen remove wood and particles of timber from the mine-run ore as it is conveyed from the unloading bin to the first or gyratory crusher
Pittsburgh, Pennsylvania (vicinity). Montour no. 4 mine of the Pittsburgh Coal Company. Mine car operation off cable in gaseous areas of the mine
Butte, Montana. Anaconda Copper Mining Company. Miner using automatic mucking machine to load ore cars in a copper mine
Pittsburgh, Pennsylvania (vicinity). Montour no. 4 mine of the Pittsburgh Coal Company. Mechanical loader filling mine car with car