National Museum of Nuclear Science & History
Gabriel worked at the 100-D Area at Hanford during the Manhattan Project.
Chappell worked in the United States Engineer District Office.
R. G. Cooper worked for the Union Carbide & Carbon Corporation.
Bryce worked at Los Alamos during the Manhattan Project.
Minnesota native Roger Hultgren worked for the DuPont Company as a chemist during the early 1940s, initally assigned to the Jolliet, Illinois munitions plans.
