An unidentified Private P. Grenbeaux observes steel corrosion tests being conducted at the Department of Agriculture Building in Washington, The photograph was taken on December 20, 1918. The image showcases the military's involvement in scientific research and testing during World War I.

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Size: 8341px × 5620px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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