In the 1950's Edward Teller thought that more people needed access to nuclear reactors, so he lead a team to design a reactor that was inherently safe due to the laws of physics, a small reactor that would stop reacting before it could melt down by using a fuel which was intimately mixed with the moderator.

The result was the TRIGA reactor, a small research reactor which has been used around the world to perform experiments that require neutron radiation.