Monsanto Corporation isn't the only source of chemicals in the area, though it is the only source of proven contamination. After the closure of Fort McClellan and the revelation of contamination, the federal government built an incinerator in Anniston to burn large stockpiles of chemical munitions including nerve gas and mustard gas. These chemical weapons were stored for decades by the US Army for potential use in warfare. Anniston is one of nine areas in the US that housed such stockpiles. Destruction of most of the munitions has gone without a hitch, and is expected to be completed during the next decade. However, the documented contamination left by the Monsanto factory will last lifetimes.