National Museum of Nuclear Science & History
Ivan Behymer came out from the Dupont 'black powder' plant in Illinois to Richland, Washington (Hanford) in March of 1943.
Spencer Thomas worked for the United States Engineer District Office.
Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
John Shoemaker was a staff worker at Los Alamos during the Manhattan Project.
