The 1961 SL-1 Reactor Explosion was the world's first fatal nuclear accident.
Click here to learn more.
Reactor Accident DVD
The SL-1 reactor explosion was the world's first fatal nuclear accident. This photograph shows the Stationary Low Power (SL-1) reactor facility at the National Reactor Testing Station (NRTS) near Idaho Falls, Idaho before the 1961 accident. The tall structure on the right side of the photo houses the reactor but was not designed as a containment structure. The connected building on the left of the photograph is the support building containing break room, administrative offices and classrooms.