National Museum of Nuclear Science & History
Cofer worked in the United States Engineer District Office.
Henry Fritz was a chemist in the Special Engineering Detachment assigned to the K-25 Plant in Oak Ridge, Tennesee.
Sanford McDonnell was a mechanical engineer with the Special Engineering Detachment at Los Alamos from April 1944 to April 1946.
Hoell worked at the 300 Area at Hanford during the Manhattan Project.
