National Museum of Nuclear Science & History
Helen D. Thomson was in the Army Group at the Metallurgical Laboratory in Chicago during the Manhattan Project.
R. I. Condit worked for the Tennessee Eastman Corporation at the Y-12 Plant.
C. C. Haws worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Dr. Joseph Katz was a chemist at Argonne National Laboratory at the Metallurgical Lab in Chicago. Katz was a part of a team that studied ways to make the diffusion of U-235 to U-238.
Johnson worked at the 100-B Area at Hanford during the Manhattan Project.