Edgar P. McKinney, Jr.

R. W. Pulliam

R. W. Pulliam worked for the United States Engineer District Office.

Alfred O. Hanson

Alfred Hanson (1914-2005) was an American physicist. Alfred Hanson came to the Manhattan Project from the University of Wisconsin where he had recently completed his doctoral work, studying the Van de Graaf “long tank” accelerator.

Robert R. Williamson

Robert R. Williamson was a laboratory assistant and computer at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.

Cecil S. Couch