National Museum of Nuclear Science & History
T. J. Kelly worked for the Kellex Corporation at the K-25 Plant.
Stanley Liebert was a machinist in the SAM Laboratory at Columbia University between 1944 and 1945.
Ross Hill worked for the United States Engineer District Office.
Richard Claassen was a research assistant at the SAM Lab at Columbia University from 1944 to 1946. While there, he built and used fluidic systems to test for unusual leaks in diffuser tubes.