National Museum of Nuclear Science & History
W. L. Richardson worked for the Union Carbide & Carbon Corporation.
Ernest C. Lawrence was a millwright at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Lawrence Kimpton was the Chief Administrative Officer at the University of Chicago Metallurgical Lab, serving there from 1943 to 1945.
R. A. Porter worked for the United States Engineer District Office.