National Museum of Nuclear Science & History
Melvin Bengston was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Paul Petretzky worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Anna Zakoian was a laboratory technician in the Health Division at the University of Chicago Met Lab.
A. W. Naylor worked for the Kellex Corporation at the K-25 Plant.