National Museum of Nuclear Science & History
O'Brien worked for Stone and Webster Engineering Corporation.
Jas Clayton worked for Clinton Laboratories at the X-10 Reactor.
Ralph N. Devore served as a captain in the 393rd Bombardment Squadron. He was the airplane commander regularly assigned to the B-29 Next Objective.
Joseph Mcguire was a chemist with the Special Engineering Detachment at the Y-12 Plant in Oak Ridge, Tennessee.
