"Captain Warrel conducts water purity tests at the Big Bethel Pumping and Filter Plant during construction work. Sergeant 1 Bonner assists in supporting the operation. Photograph taken on October 13, 1919. Official description issued, symbolizing construction work at the plant. Photo number: R0/18/19."

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Size: 8515px × 5784px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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