National Museum of Nuclear Science & History
Alfred “Al” Zeltmann was a member of the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
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.
George Hanley worked for Hanley & Company.
T. H. Kent worked for the J.A. Jones Construction Company.
