National Museum of Nuclear Science & History
Earl Long was an American chemical physicist. He served as director of the University of Chicago Institute for the Study of Metals.
Margaret M. Emmerson was a technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
O. W. Childs worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Frank R. Johnson was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.