R. B. Rush

Louise Rosenthal

Arthur J. Monroe

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.

George L. Kehl

George Kehl was a metallurgist and professor at Columbia University’s School of Mines. He worked at Los Alamos on the Manhattan Project.