B. B. Evans

M. G. Lawrence

John P. McBride

John P. McBride was a research assistant in the Chemistry Division at the Chicago Met Lab. He was later assigned to Oak Ridge, where he worked on plutonium purification and on isolating uranium-233 isotopes from thorium.

Owen Chamberlain

Owen Chamberlain (1920-2006) was an American physicist and winner of the 1959 Nobel Prize.  He joined the Manhattan Project in 1942 after his graduate studies were interrupted by World War II.

Kenneth Pumphrey

Ken Pumphrey joined the Manhattan Project at Los Alamos in 1946, where he worked as a security guard until 1948.