National Museum of Nuclear Science & History
R. B. Smith worked for Clinton Laboratories at the X-10 Reactor.
Charles Helmers worked for the J.A. Jones Construction Company.
Myrtle E. Karcher was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Enareo Serna was a staff worker at Los Alamos during the Manhattan Project.
