Inspectors examining spruce timber to ensure that only quality wood without knots and kinks is used in the production of aircraft. This photo was taken at Grays Harbor, Washington, as part of the Spruce Production Division of the Aviation Section, , during World War One.

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Size: 7981px × 6301px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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