TY - CHAP DB - Science History Institute DP - Science History Institute M2 - Courtesy of Science History Institute. Rights: Public Domain Mark 1.0 TI - Interior View of Phosgene Plant T2 - The Edgewood Arsenal ID - st74cq95h DA - 1919/03// YR - 1919 UR - https://digital.sciencehistory.org/works/st74cq95h KW - Phosgene KW - Maryland--Edgewood (Harford County) KW - Edgewood Arsenal (Md.) KW - United States. Army. Chemical Warfare Service KW - Chemical plants KW - Chemical warfare KW - World War (1914-1918) LA - ER -