National Museum of Nuclear Science & History
Hugo Leckelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
George Koval was an American chemical engineer and one of the most important Soviet spies of the 20th century.
Edward F. Kolley was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
G. A. Kirton worked for the United States Engineer District Office.
Andrew J. Stiber served in the 1027th Air Material Squadron.