Santa Susana Field Laboratory
![Aerial view of the Santa Susana Field Laboratory in the Simi Hills, with the San Fernando Valley and San Gabriel Mountains beyond to the east. The Energy Technology Engineering Center site is in the flat Area IV at the lower left, with the Rocket Test Field Laboratory sites in the hills at the center. (Spring 2005).](/Images/godic/202412/20/SSFL_Aerial_20051252.jpg")
![Santa Susana Field Laboratory administrative areas, and the surrounding communities.](/Images/godic/202412/20/Ssfl_cdc_atsdr_figure11252.gif")
![Aerial view looking north, of the Energy Technology Engineering Center in Area IV (1990).](/Images/godic/202412/20/Ssfl_fieldlab_aerial1252.jpg")
![SSFL: the Atomics International Snap reactor.](/Images/godic/202412/20/Snap_SSFL_reactor_picture1252.jpg")
The Santa Susana Field Laboratory is a complex of industrial research and development facilities located on a 2,668-acre (1,080 ha) portion of the Southern California Simi Hills in Simi Valley, California. It was used mainly for the development and testing of liquid-propellant rocket engines for the United States space program from 1949 to 2006, nuclear reactors from 1953 to 1980 and the operation of a U.S. government-sponsored liquid metals research center from 1966 to 1998. The site is located approximately 7 miles (11 km) northwest from the community of Canoga Park and approximately 30 miles (48 km) northwest of Downtown Los Angeles. Sage Ranch Park is adjacent on part of the northern boundary and the community of Bell Canyon along the entire southern boundary.