National Museum of Nuclear Science & History
R. S. Leonard worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Joseph H. Heartberg was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
William Page was a staff worker at Los Alamos during the Manhattan Project.
Annie Prothrow was a laboratory assistant in the Chemistry Divison of the Chicago Met Lab during the Manhattan Project.
