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.
G. O. Robinson, Jr. worked for the United States Engineer District Office.
H.W. was a consultant at Metallurgical Laboratory in Chicago during the Manhattan Project.
Joe W. Howland was a medical officer in charge of special problems in the US Army, stationed in Oak Ridge, Tennessee and Rochester, New York during the Manhattan Project.