What Is Santa Susana And Why Should You Care?
The Santa Susana Field Lab was a research facility on a 2,850-acre site in the hills above the San Fernando and Simi valleys. Built in 1947, it was used to test experimental rocket systems and was home to 10 nuclear reactors. In July 1959, one of those reactors suffered a partial meltdown. Workers tried to repair it. When they couldn't, they were ordered to open the reactor's large door, releasing radiation into the air. It likely spread to nearby communities such as Simi Valley, Chatsworth and Canoga Park.
Six weeks after the meltdown, the Atomic Energy Commission issued a statement saying that there had been a minor "fuel element failure" but there had been "no release of radioactive materials" into the environment. That wasn't true.
In 2017, reporter Joel Grover of NBC4, our media partner, documented all of this in "L.A.'s Nuclear Secret," an eight-part series exposing the reactor incident and subsequent cover-up.
NASA and aerospace company Rocketdyne continued to use the Santa Susana facility for thousands of rocket tests through 1990. Those activities also released all sorts of toxic chemicals into the air and deposited them into the groundwater, the surface water and the soil.