H. P. Hanisch

Jack L. Callan

Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Ross Guillet

Ross Guillet worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Herbert A. Stanwood, Jr.

Herbert Stanwood, Jr. worked for the United States Engineer District Office.

William B. Gibson