D. J. Cummings

Nicholas Heerema

Attended the University of Michigan.

C. E. Twigg

C. E. Twigg worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Ruth M. Rottman

Ruth Rottman was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.

P. J. Crowder