National Museum of Nuclear Science & History
Irvin Mastin worked for the J.A. Jones Construction Company.
Ralph Shank worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Lomie F. Caho was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Joe Romero was a staff worker at Los Alamos during the Manhattan Project.
