National Museum of Nuclear Science & History
Ralph Brooks worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Joseph O'Byrne worked for Clinton Laboratories at the X-10 Reactor.
W. L. McKinstrey worked for the Roane-Anderson Company.
Jack Hefner joined the Manhattan Project at Oak Ridge in 1943. Hefner was a reactor engineer and helped supervise the construction of the X-10 Graphite Reactor.
