William O. Collins

G. E. McAllister

G. E. McAllister worked for the United States Engineer District Office.

Dale Critselous

Critselous worked Stone and Webster Engineering Corporation.

David Greenglass

David Greenglass (1922-2014) was a machinist and member of the Special Engineer Detachment who engaged in espionage activities for the Soviet Union at Los Alamos during the Manhattan Project.

C. E. Collins