National Museum of Nuclear Science & History
Harry Reason was a janitor at the Metallurgical Laboratory in Chicago during the Manhattan Project.
McMahon worked in the 100 D Area at Hanford during the Manhattan Project.
Arthur Scott Weygandt was a chemical engineer at DuPont.
Angeline Sniegoski was a staff worker at Los Alamos during the Manhattan Project.
A. C. Hudson worked for the Roane-Anderson Company.