Rocky Mountain Arsenal
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The Rocky Mountain Arsenal was a United States chemical weapons manufacturing center located in the Denver Metropolitan Area in Commerce City, Colorado. The site was completed December 1942 and then o
Aerial photo, 1943
Colorado Rocky Mountain Arsennal NARA 23936193
Rocky Mountain Arsenal, south entrance. (photo 1960)
Rocky Mountain Arsenal, south plant. (photo 1970)
Lewisite
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Lewisite is an organoarsenic compound. It was once manufactured in the United States, Japan, Germany and the Soviet Union for use as a chemical weapon, acting as a vesicant and lung irritant. Although
Rocky Mountain Arsenal
…the site, it was less likely to be attacked. The Rocky Mountain Arsenal manufactured chemical weapons including mustard gas, napalm, white phosphorus, lewisite, chlorine gas, and sarin. In the early 1960s, the U.S. Army began to lease out its facilities to private companies to manufacture pesticides. In the…
Lewisite (top row) and mustard gas test with concentrations from 0.01% to 0.06%
Lewisite identification poster from World War II