National Museum of Nuclear Science & History
Leroy Hartmann (1922 – 1944) was an electrical engineer in the Special Engineer Detachment Manhattan District CE in Oak Ridge.
Henry Ward worked for the United States Engineer District Office.
Robert Irwin worked for the Tennessee Eastman Corporation at the Y-12 Plant.
John J. Norton was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
