National Museum of Nuclear Science & History
Irvin Mastin worked for the J.A. Jones Construction Company.
H. W. Caldwell worked for the Edenfield Electric Company.
James T. Holland worked for the Tennessee Eastman Corporation from June 1945 – September 1945 as a Beta machine mechanic in the Y-12 Plant, working in building 9204-3.
John O’Gara worked for the United States Engineer District Office.
D. M. Ellett is a mechanical engineer who joined the Manhattan Project after the end of World War II.
