1989

Nuclear weapons productions facilities at the Rocky Flats Plant in Colorado and the Fernald Feed Materials Production Center in Ohio ceased production and changed their mission to cleaning up their facilities. Located 21 miles northwest of Denver, the Rocky Flats Plant was built in 1951 to produce plutonium triggers for nuclear weapons. The Fernald Feed Materials Production Center (now the Fernald Environmental Management Project) was built in 1951 to convert uranium feed materials into uranium metal for use in DOE reactors. Fernald is 20 miles northwest of Cincinnati.