Jack F. Hansjergen

Arthur L. Hughes

Arthur L. Hughes was an British/Welsh physicist. He worked on the Manhattan Project in St. Louis on the cyclotron and plutonium production and at Los Alamos, NM.

Samuel J. Kiehl

Orville G. Wagner

Robert M. Underhill

Robert Mackenzie “Bob” Underhill (1893-1988) was a finance officer for the University of California during the Manhattan Project.