National Museum of Nuclear Science & History
O'Brien worked for Stone and Webster Engineering Corporation.
Robert Cyr worked for the Tennessee Eastman Corporation at the Y-12 Plant.
David Greenglass (1922-2014) was a machinist and member of the Special Engineer Detachment who engaged in espionage activities for the Soviet Union at Los Alamos during the Manhattan Project.
S. C. Dobbs worked for the Combustion Engineering Company.