National Museum of Nuclear Science & History
H. M. Ellis, Jr. worked for the Roane-Anderson Company.
Samuel R. Goldwasser worked as a Research Assistant at the Met Lab from October of 1943 to March of 1944.
H. T. Wensel worked for the United States Engineer District Office.
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.