Workers at David Lupton's Sons Co. plant in Philadelphia, PA, manufacturing 240 mm and 6" trench mortars, Mark I, for the government. This image provides a glimpse into the production process of the parts for the trench mortars. The photograph was taken on March 15, 1919.

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Size: 8565px × 5795px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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