National Museum of Nuclear Science & History
I. T. Lockwood worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Marietta C. Moore was a technician in the Health Division at the University of Chicago Met Lab. She signed the Szilard petition.
Clark worked in the United States Engineer District Office.
Julius M. Simmons was an American chemist. He worked as a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
