What other reactor did the supervisor of construction of the reactor that went critical under the supervision of Enrico Fermi build?
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. He worked at the Manhattan Project's Metallurgical Laboratory during World War II, and supervised the construction of Chicago Pile-1, the world’s first nuclear reactor, which went critical on December 2, 1942, at the University of Chicago. 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.
Sergei Preminin Sergei Anatolievich Preminin (Russian: Сергей Анатольевич Преминин, 18 October 1965 – 3 October 1986) was a Soviet Russian sailor who, after an explosion aboard nuclear submarine "K-219", prevented an impending nuclear meltdown by manually forcing damaged control rods into place. He was, however, unable to exit the reactor compartment because the hatch had jammed due to increased pressure, and died.