National Museum of Nuclear Science & History
Halpern worked in the United States Engineer District Office.
L. G. Chelius worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Maurice Sullivan served in the 1395th Military Police Aviation.
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.