National Museum of Nuclear Science & History
Leslie Spalding worked for the United States Engineer District Office.
Helen R. Hughes was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Clarence Francis Hiskey (1912-1998) was an American chemist and Soviet spy. He worked at Columbia University and the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.
