National Museum of Nuclear Science & History
Barrett worked for Stone and Webster Engineering Corporation.
Richard Recker served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
R. J. Rockstron worked for the United States Engineer District Office.
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.
