National Museum of Nuclear Science & History
Earl Long was an American chemical physicist. He served as director of the University of Chicago Institute for the Study of Metals.
Mathias A. Klinger was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
James R. Chapman was an engineer working for Stone & Webster when he was recruited to work on the Manhattan Project.
Rupp worked at the 300 Area and the 200 West Area at Hanford during the Manhattan Project.