National Museum of Nuclear Science & History
R. J. Guthrie worked for the Watson-Flagg Engineering Company.
Edward F. Kolley was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
C. E. Jones worked for the Union Carbide & Carbon Corporation.
Lawrence S. O’Rourke began working on the Manhattan Project at Columbia University after he was called up from the Army Reserves in 1943.
