National Museum of Nuclear Science & History
Paul Olivas was a staff worker at Los Alamos during the Manhattan Project.
Edward Czuba was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
J. L. Frye worked for the Roane-Anderson Company.
Joseph H. Heartberg was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
