National Museum of Nuclear Science & History
N. Berini worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Clarence H. Mathews was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Bernstein worked in the United States Engineer District Office.
Philipp Klein was a part-time switchboard operator in the SAM Lab while studying chemical engineering at Columbia University.
