L. C. French

Charles W. Mignon

Charles Mignon worked for the Kellex Corporation at the K-25 Plant.

Joseph H. Heartberg

Joseph H. Heartberg was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

A. G. Lambert

Lambert worked in the 100 B and D Areas at Hanford during the Manhattan Project.

H. D. Turner