National Museum of Nuclear Science & History
Sidney Williams was a janitor at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
E. C. Smith, Jr. worked for the Kellex Corporation at the K-25 Plant.
W. S. Herron worked for the Tennessee Eastman Corporation at the Y-12 Plant.
James E. Grady served in the 1st Ordnance Squadron.