Although it generated power, the first nuclear reactor to do so, Experimental Breeder Reactor Number One was above all an experiment. We see here, not only the creation of a new core design to test a scientific hypothesis, but also a great amount of painstaking handwork, which would be totally uneconomical for real-world power production. Unsurprisingly, a major focus of Experimental Breeder Reactor Number Two was on simplifications which would reduce the fuel cycle cost!















