National Museum of Nuclear Science & History
Before the war Oswald Greager was a high-ranking DuPont chemist. He took leave from DuPont in 1942 to join the Army's Chemical Warfare Service.
Nathan Safferstein (1921-2013) was an American counterintelligence agent during the Manhattan Project.
Emily Ninger was a staff worker at Los Alamos during the Manhattan Project.
