National Museum of Nuclear Science & History
Halpern worked in the United States Engineer District Office.
Clayton Plummer worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Graf worked at the 300 Area at Hanford during the Manhattan Project.
Murray worked for Stone and Webster Engineering Corporation.
Francis L. Friedman was a theoretical physicist and group leader at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
