M. T. Litton

J. C. Kirkman

John Mihalkanin

John Mihalkanin was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

J. T. Murphy

J. T. Murphy worked for the United States Engineer District Office.

J. P. Underwood

J. P. Underwood worked for the Roane-Anderson Company.