H.F. Johnstone

George Ralph

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

E. A. Pluhar

E. A. Pluhar worked for the Union Carbide & Carbon Corporation.

Eric Jette

Eric Jette (1897-1963) was an American metallurgist.  He was a professor of metallurgy at Columbia University School of Mines before being recruited for the Manhattan Project.

J. C. Conley