National Museum of Nuclear Science & History
B. D. Ferguson worked for the Kellex Corporation at the K-25 Plant.
Leo P. Hassen was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
J. G. Fortney worked for the Tennessee Eastman Corporation at the Y-12 Plant.
M. L. Thigpen worked for Clinton Laboratories at the X-10 Reactor.