Gordon MacBeth

H. O. Arnold

H. O. Arnold worked for the Kellex Corporation at the K-25 Plant.

E. B. Haines

Haines worked at the 100-B Area at Hanford during the Manhattan Project.

M. I. Warden

Mary McCormick

Mary McCormick was a secretary at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.