Ben F. DeHays

A. P. Nicholson

Nicholson worked for Stone and Webster Engineering Corporation.

Donald Engelkemeior

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

Marvin Wilkening

Marvin Wilkening, a physicist, traveled the Grand Circuit of the Manhattan Project, pursuing his specialty of measuring neutron intensity.

Paul Brown