John Ursch

Donald Engelkemeior

Donald Engelkemeior was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Ralph C. Sparks

George L. Burnett

George Burnett worked for the Tennessee Eastman Corporation at the Y-12 Plant.

C. W. Cryer

C. W. Cryer worked for the Midwest Piping and Supply Company.