National Museum of Nuclear Science & History
W. O. Nelson worked for the J.A. Jones Construction 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.
Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.