National Museum of Nuclear Science & History
Sidney Yenny was a staff worker at Los Alamos during the Manhattan Project.
Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Attended the University of Pennsylvania.
Clarkson worked in the United States Engineer District Office.
William Hinch was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
