Minuteman Missile National Historic Site preserves two facilities that were once part of a Minuteman Missile field that covered the far western portion of South Dakota from 1963 through the early 1990's. There were 15 Launch Control Facilities that commanded and controlled 150 Launch Facilities (Missile Silos) holding Minuteman Intercontinental Ballistic Missiles. Two of these facilities survive in their historic state, Launch Control Facility Delta-01 with its corresponding underground Launch Control Center and Launch Facility (Missile Silo) Delta-09 . These two sites, along with a