National Museum of Nuclear Science & History
Mars worked for Stone and Webster Engineering Corporation.
John L. Willoughby served as a sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Bockscar.
E. W. McConnell worked for the Tennessee Eastman Corporation at the Y-12 Plant.
J. C. Freer worked for the Roane-Anderson Company.
Hendrickson worked in the United States Engineer District Office.