Robert C. Smith

W. F. Pfennig

Pfennig worked for Stone and Webster Engineering Corporation.

Norma K. Hipple

Norma K. Hipple was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Louise P. Fry

Fry worked in the United States Engineer District Office.

D. C. Brown