National Museum of Nuclear Science & History
D. J. Lundon worked for the Edenfield Electric Company.
Andrew Walker was a member of the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
Leahy worked for Stone and Webster Engineering Corporation.
Melvin Bengston was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Potter worked for Stone and Webster Engineering Corporation.