National Museum of Nuclear Science & History
S. M. MacNeille worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Lester W. Mingin served in the 1st Ordnance Squadron.
Warren Johnson worked for Clinton Laboratories at the X-10 Reactor.
Agnes Gnaedinger was a chemist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.