G. J. Fisher

W. F. Pfennig

Pfennig worked for Stone and Webster Engineering Corporation.

Walter M. Longfelt

Walter M. Longfelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Richard Emanatian

Richard Emanatian was with the military police detachment at Los Alamos during the war. He maintained secrecy through the rest of his life, and his family only found about his involvement long after his death.

Eleanor White