Anniston Army Depot, Alabama

A munitions storage and maintenance center, Anniston employs over 2,000 people and covers 25 square miles of land. Tanks and other heavy equipment are repaired and tested here, but historically Anniston's main role has been as a major munitions storage site, including at one time around 7% of the U.S. chemical weapons stockpile. The chemical weapons component of the depot's holdings (mostly M55 rockets shells filled with Sarin, VX, and mustard gas) was housed at a separate facility known as the Anniston Chemical Agent Disposal Facility (ANCDF) beginning in the early 1960's, until the destruction of the entire stockpile was completed in 2011, as mandated by the 1997 Chemical Weapons Convention Treaty. The incinerator used to destroy the weapons was closed a year later.