M. F. Acken

Fred A. Wingenfield

Q. E. Rife

Rife worked for Stone and Webster Engineering Corporation.

Harold E. Hoover

Harold Hoover was a member of the Special Engineer Detachment during the Manhattan Project. He worked as a filter foreman at the Y-12 Plant, but his real job was in counterintelligence, to ensure no sabotage occurred.

Carroll H. Fairbanks