Image depicting the mechanical research conducted by Clark in the Chemical Warfare Service's Research Division during World War I. The photo shows an American Tissot mask with die casting, inhalation tubes, and a chin rest. The image was taken on July 12, 1918, and is labeled as Subject 54506 AU received from the Research Div., Chemical Warfare Service.

---

Size: 8484px × 5809px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: .., 1, 1048, 12/18, 54506, activities, american, apparatus, archives, attack, casting, chemical, chin, clark, defense, die, div., division, efforts, equipment, gas, historical, inhalation, inhalers, july, mask, masks, mechanical, mechanisms, military, photographs, process, protection, protective, research, respiratory, rest, rests, service, subiect, supplies, technology, tissot, tubes, war, warfare, world