National Museum of Nuclear Science & History
R. L. Thornton worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Tranquilino Armigo was a staff member at Los Alamos during the Manhattan Project.
Jesse F. Smith served in the 393rd Bombardment Squadron.
Clarence H. Mathews was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.