 Walter Henry Zinn designed and built several new reactors, including one that produced sufficient electricity to illuminate four what?
Walter Zinn: Walter Henry Zinn (December 10, 1906 – February 14, 2000) was a nuclear physicist who was the first director of the Argonne National Laboratory from 1946 to 1956. Walter Zinn:  At Argonne he designed and built several new reactors, including Experimental Breeder Reactor I, the first nuclear reactor to produce electric power, which went live on December 20, 1951.
i don't know