National Museum of Nuclear Science & History
Jessen worked at the 300 Area at Hanford during the Manhattan Project.
Charles E. Kircher III (1908-1972) was a chemical engineer who worked on the Manhattan Project for DuPont.
Father Daniel Colibraro worked in Los Alamos during the last year of the war. He eventually would go on to become a priest.
McMahon worked in the 100 D Area at Hanford during the Manhattan Project.