National Museum of Nuclear Science & History
Burr H. Ritter was a chemical engineer at the Hooker Chemical Company in Niagara Falls, New York during the Manhattan Project.
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.
Bergen McCormick worked for the J.A. Jones Construction Company.
