National Museum of Nuclear Science & History
O'Brien worked for Stone and Webster Engineering Corporation.
C. E. Noe worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Douglas Rouse worked for the United States Engineer District Office.
George Maronde was a security guard at the University of Chicago Metallurgical Lab. He stood guard outside Stagg Field when Chicago Pile-1 went critical on December 2, 1942.
Millard Ross was a staff worker at Los Alamos during the Manhattan Project.