National Museum of Nuclear Science & History
J. N. Holt worked for the United States Engineer District Office.
Dean Castimore was a Manhattan Project veteran and a fireman. During the war he was stationed at Los Alamos.
Ivan Behymer came out from the Dupont 'black powder' plant in Illinois to Richland, Washington (Hanford) in March of 1943.
Fred Blackwell worked for the Tennessee Eastman Corporation at the Y-12 Plant.