National Museum of Nuclear Science & History
A. J. Poli served in the 509th Headquarters.
S. W. Pratt worked for Clinton Laboratories at the X-10 Reactor.
Howard Braasch was a laborer at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Richard Ungemach served in the army at Los Alamos during the Manhattan Project.
Daniel N. Koshland was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.