Walter Koester

Norman G. Hediger

Kenneth H. Bruner

Bruner worked in the United States Engineer District Office.

Ralph Nobles

Ralph Nobles was one of three brothers to work on the Manhattan Project. He and his brother William worked at Los Alamos, while brother Robert was at the University of Chicago’s Metallurgical Laboratory.

Frank M. Graham

Frank Graham worked for the Midwest Piping and Supply Company.