National Museum of Nuclear Science & History
A. E. Ballard worked for the Tennessee Eastman Corporation at the Y-12 Plant.
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.
Hardleben worked at the 100-F Area at Hanford during the Manhattan Project.