National Museum of Nuclear Science & History
A. S. Preston worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Patterson worked in the 100 B Area at Hanford during the Manhattan Project.
Melvin S. Friedman was an associate chemist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Margaret M. Emmerson was a technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
