Space Launch Complex 1 (SLC-1) was a

launch pad A launch pad is an above-ground facility from which a rocket-powered missile or space vehicle is vertically launched. The term ''launch pad'' can be used to describe just the central launch platform ( mobile launcher platform), or the ent ...

Vandenberg Space Force Base Vandenberg Space Force Base , previously Vandenberg Air Force Base, is a United States Space Force Base in Santa Barbara County, California. Established in 1941, Vandenberg Space Force Base is a space launch base, launching spacecraft from th ...

in California, United States. SLC-1 consisted of two pads, SLC-1E and SLC-1W. Both sites were built in 1958 for the never activated 75th Strategic Missile Squadron for Thor Agena A launches. SLC-1E launch pad 75-3-5, SLC-1W launch pad 75-3-4. Both were upgraded to a Space Launch Complex (SLC) in 1966. Deactivated with phaseout of Thor-Agena. SLC-1E deactivated 1968, 45 launches; SLC-1W deactivated in 1971, 56 launches.

References

* * {{coord, 34.757171, N, 120.627796, W, source:wikidata, display=title Vandenberg Space Force Base