National Museum of Nuclear Science & History
Andrew Polich was a staff worker at Los Alamos during the Manhattan Project.
Helena Calloway was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Cecil H. Ensley served in the 603rd Air Engineering Squadron.
Herbert Silverstone was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
