National Museum of Nuclear Science & History
Marselis Powell worked for the Union Carbide & Carbon Corporation.
Robert Kupp joined the Manhattan Project at Oak Ridge in January 1945. Kupp was a supervisor in the Line Recorder Department at K-25, where he monitored a mass spectrometer that determined the concentration of various material in the cascade while it was being processed.
Benton worked at the 200 West Area at Hanford during the Manhattan Project.
George Graves was a technical advisor at Hanford, and so famous there that he inspired a poem: "We'd called up a tight design/ Hewn strictly to the longhairs' line.