National Museum of Nuclear Science & History
Piper worked for Stone and Webster Engineering Corporation.
Donald O. Cole served as a corporal in the 393rd Bombardment Squadron. He was regularly assigned to the B-29 Top Secret.
Robert Whitcomb worked for the Kellex Corporation at the K-25 Plant.
Joseph E. Draley was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.