A small gas-fired steam treater at the Development Division, U. S. Chemical Warfare Service in Cleveland. The treater is used for chemical warfare research and development. The image was taken on February 6, 1919, by a photographer from the development division.

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Size: 8448px × 5756px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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