National Museum of Nuclear Science & History
Jose Sandoval was a staff worker at Los Alamos during the Manhattan Project.
L. A. Nutting worked for Clinton Laboratories at the X-10 Reactor.
Leo P. Hassen was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
H. R. Pinepuks worked for the Roane-Anderson Company.