T. P. Gottwig

Jack Hefner

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.

Henry W. Wigen

Henry Wigen worked for the United States Engineer District Office.

Robert Winkel

R. A Winkel worked for the Union Carbide & Carbon Corporation. At Oak Ridge he assisted in the development of the K-25 plant.

Melvin Jepsen