Leonard W. Fromm Jr.

Helen J. Arson

Helen J. Arson was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.

Harry Palevsky

Harry Palevsky (1919-1990) was an American engineer. A Chicago native, Palevsky began his work on the Manhattan Project at the University of Chicago Metallurgical Laboratory shortly after finishing his undergraduate career at Northwestern University.

Harley D. Kuster

A. L. Cronholm

Cronholm worked at the 100-F Area at Hanford during the Manhattan Project.