National Museum of Nuclear Science & History
Marion Edward Cieslicki was an Polish American metallurgist who worked on the Manhattan Project from 1944 to 1946 at the University of Chicago and at Los Alamos.
Paul Petretzky worked for the Tennessee Eastman Corporation at the Y-12 Plant.
David Hawkins (1913-2002) was an administrative aide at Los Alamos and the Manhattan Project’s official historian.
