Like Pine Bluff it is an extremely vast site that encompasses 14,600 acres (59 km2) of land. The storage began in the 1940s with mustard gases and was greatly expanded in the 1960s with GB and VX (O-ethyl S-methylphosphonothioate or nerve agent) <Blue Grass Army Depot, 2005>. Construction is currently underway on water oxidation facilities that will drive the destruction of the weapons at this facility; completion of these facilities is expected in the near future.