National Museum of Nuclear Science & History
Robert Parks worked for the United States Engineer District Office.
Hayes worked at the 300 Area at Hanford during the Manhattan Project.
R. J. Guthrie worked for the Watson-Flagg Engineering Company.
Raycliffe C. Davis was a graduate of Central College in Pella, Iowa. He joined the Army while living in Cedar Rapids, IA, and was assigned with Special Engineering Detachment in Oak Ridge, TN in April 1944.