Allen Ridley

Lawrence F. Roth

Lawrence Roth worked for the United States Engineer District Office.

Samuel Goudsmit

Samuel Goudsmit (1902-1978) was a Dutch-American physicist. In May 1944, Goudsmit became scientific director of the Manhattan Project’s Alsos Mission, a top-secret operation responsible for gathering intelligence on Germany’s atomic program.

Gordon D. Roberts

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.