National Museum of Nuclear Science & History
Glenn Sprankle worked in the shop at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Leonard Blankenship worked for the Roane-Anderson Company.
John Oathaot was a staff worker at Los Alamos during the Manhattan Project.
Arthur N. Jaffey was an associate chemist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.