The BORAX Experiments were a series of safety experiments on boiling water nuclear reactors conducted by Argonne National Laboratory in the 1950s and 1960s at the National Reactor Testing Station in eastern Idaho.[1] They were performed using the five BORAX reactors that were designed and built by Argonne.[2] BORAX-III was the first nuclear reactor to supply electrical power to the grid in the United States in 1955.