Vigo Ordnance Plant

The Vigo Ordnance Plant, also known as the Vigo Chemical Plant or simply Vigo Plant, was a U.S. Army facility built in 1942 to produce conventional weapons. In 1944 it was converted to produced biological agents for the U.S. bio-weapons program. The plant never produced any bio-weapons before the end of World War II but did produce 8000 pounds of an anthrax simulant. The plant was transferred to Pfizer after the war, the company operated it until announcing its closure in 2008.