National Museum of Nuclear Science & History
Tracy worked for Stone and Webster Engineering Corporation.
Theodore “Ted” Hall (1925-1999) was an American physicist and an atomic spy who passed along detailed information about the implosion-type “Fat Man” bomb and several processes for purifying plutonium to the Soviet Union.
George S. Monk was a physicist at the University of Chicago Met Lab and an expert on optics. He was married to the mathematician Ardis Monk.