National Museum of Nuclear Science & History
John Smith was a guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Anton Kegl was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Paul Olum (1918-2001) was an American theoretical physicist at Los Alamos from 1943 to 1945. Olum was born in 1918 in Binghamton, New York.
Mars worked for Stone and Webster Engineering Corporation.
C. W. Hicks worked for the Roane-Anderson Company.