Image taken at the American University Experiment Station in Washington on May 9, 1918. The photo shows a reconnaissance team from the Army's Nitrate Division of the Ordnance Department securing the Tranze Block after a controlled detonation. The photo is labeled "18614" and is marked "FOR OFFICIAL USE ONLY."

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Size: 8410px × 5658px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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