Topic - Umatilla Chemical Depot

The Umatilla Chemical Depot, (UMCD) based in Umatilla, Oregon, was a U.S. Army installation in the United States that stored chemical weapons. The chemical weapons originally stored at the depot consisted of various munitions and ton containers containing GB and VX nerve agents and HD blister agent. All munitions have been safely destroyed by 2011 and base closure operation are expected to be completed by 2015. - Source: Wikipedia