National Museum of Nuclear Science & History
H. M. Nappen worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Leon D. Smith joined the Manhattan Project in 1944 and was assigned to the 509th Composite Group at Wendover Airfield in Utah.
Gibson worked in the United States Engineer District Office.
L. H. Roberts worked for the H. K. Ferguson Company.
Dean Castimore was a Manhattan Project veteran and a fireman. During the war he was stationed at Los Alamos.
