National Museum of Nuclear Science & History
George Francis McEwen was born on June 16, 1882 in Manchester, Iowa. He attended Iowa State College.
Herbert Etzler worked for the Roane-Anderson Company.
Harris Williams worked for the J.A. Jones Construction Company.
Klaus Fuchs (1911-1988) was a German theoretical physicist and spy who worked at Los Alamos during the Manhattan Project and passed atomic secrets to the Soviet Union.