Francis J. Kratch

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.

Marvin B. Lutzow

Robert W. Ball

Robert Ball was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.

N. R. Gagen

Gagen worked in the United States Engineer District Office.