National Museum of Nuclear Science & History
J. H. Graham worked for the Tennessee Eastman Corporation at the Y-12 Plant.
J. R. Siebert worked for the Comstock-Bryant Electric Company.
Lawrence S. O’Rourke began working on the Manhattan Project at Columbia University after he was called up from the Army Reserves in 1943.
Olga M. Klicek was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Mitchell S. Szczuka served in the 393rd Bombardment Squadron.
