Henry W. Wood Jr.

Henry L. Redsten

Arthur R. Weisberg

Arthur Weisberg was a mechanical engineer with the Special Engineer Detachment assigned to the Metallurgical Lab at the University of Chicago.

James T. Holland

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.

Joseph H. Heartberg

Joseph H. Heartberg was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.