National Museum of Nuclear Science & History
W. M. Salminen 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.
W. M. Mathis worked for Clinton Laboratories at the X-10 Reactor.
Bell worked in the United States Engineer District Office.
James B. Sullivan served in the 393rd Bombardment Squadron.
