National Museum of Nuclear Science & History
Harold Powell worked for the United States Engineer District Office.
Major John A. Derry was a top military assistant, mainly working in Washington D.C., during the Manhattan Project.
George Koval was an American chemical engineer and one of the most important Soviet spies of the 20th century.
Charles E. Kircher III (1908-1972) was a chemical engineer who worked on the Manhattan Project for DuPont.
