National Museum of Nuclear Science & History
Robert JS Brown was a member of the Special Engineer Detachment at Los Alamos. He worked under Don Hornig on the electrical aspects of detonation for the plutonium bomb.
Maier worked for Stone and Webster Engineering Corporation.
Okey B. Ellison was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
B. H. Hagedorn worked for the Edenfield Electric Company.