John H. Noble

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.

Ethel Ann Caylor

Ethel Ann Caylor was a nurse at the Los Alamos Hospital. She worked here from 1944 to 1945. While not much is known of Caylor’s work, it is believed that she was assigned to the maternity ward.

Ralph M. Gilbert

B. H. Ronfeld

B. H. Ronfeld served in the 509th Headquarters.