National Museum of Nuclear Science & History
Charles Maier was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Leroy Hartmann (1922 – 1944) was an electrical engineer in the Special Engineer Detachment Manhattan District CE in Oak Ridge.
Martin Kamen (1913-2002) was a Canadian-American physicist. Kamen was seemingly destined for a landmark career in physics when he arrived at the Radiological Laboratory at the University of California, Berkeley in 1936.
Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
