National Museum of Nuclear Science & History
Felix Sandoval was a staff worker at Los Alamos during the Manhattan Project.
W. H. Griffin worked for the H. K. Ferguson Company.
Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
K.W. "Wally" Greager began working at Hanford in late 1951 after graduating from college. He worked on various projects at Hanford, including with the B Reactor there and the process of irraditating the fuel in the tubes in the reactor.