Abstract
The U.S. Army has custody of chemical weapons (CW) containing nerve and blister (vesicant) agents located in eight sites in the continental United States and at Johnston Island, a small island in the Pacific Ocean. The eight sites in the continental U.S. are: Aberdeen Proving Ground, Maryland; Anniston Army Depot, Alabama; Blue Grass Army Depot, Kentucky; Newport Army Ammunition Plant, Indiana; Pine Bluff Arsenal, Arkansas; Pueblo Depot Activity, Colorado; Tooele Army Depot, Utah; and Umatilla Depot Activity, Oregon. The stockpile, which totals approximately 32,000 tons consists primarily of three agents, the nerve agents GB (sann) and VX, and the blister agent HD (sulfur mustard). The structures of these agents are shown in Figure 1. The agents are stored in steel 1-ton bulk containers as well as in munitions such as bombs, rockets, artillery shells, and mines. All the munitions and agents are at least 25-50 years old.
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