J. E. Craven

Helen E. Krinek

Helen E. Krinek was a research assistant in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

H. H. Visger

Visger worked at the 300 Area at Hanford during the Manhattan Project. 

F. B. Nevels

F. B. Nevels worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Mack Edward