Arthur G. Barney

Wilbur L. Johnston

Robert Kupp

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.

Charles Cooper

Charles Cooper was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Frank Osvath

Frank Osvath was a staff worker at Los Alamos during the Manhattan Project.