15, 1940S, 1944, 1950S, 1954, 3, A, ANL, ARGONNE, BW, CHICAGO, CP, CP-3, CRITICAL, DOWN, ENERGY, FIRST, GO, HEAVY, HISTORIC, HISTORICAL, HISTORY, IN, IT, LAB, LABORATORY, MACHINE, MALE, MAN, MAY, NATIONAL, NUCLEAR, ON, PEOPLE, PERSON, PHYSICIST, PHYSICS, PILE, PILE-3, POWER, REACTOR, SCIENCE, SCIENTIST, SHUT, SITE, SOURCE, THE, TO, WAS, WATER,