Image depicting war work and the Bureau of Mines during World War One. The machines in the image are measuring the resistance of steel specimens to fracture by impact. Captain Goodale of the ordnance branch of the War Department oversaw this work, with the Bureau of Mines providing laboratory facilities at the Pittsburgh, Pa., station.

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Size: 8448px × 5862px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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