George L. Arnold

E. L. Taliaferro

E. L. Taliaferro worked for the Roane-Anderson Company.

Leo James Rainwater

Leo James Rainwater was an American physicist and winner of the 1975 Nobel Prize in Physics.  As a graduate student at Columbia University, Rainwater assisted the Manhattan Project through research in the Substitute Alloy Materials (SAM) Lab.

John Vach

John Vach was a guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.

Tom Martin