National Museum of Nuclear Science & History
MacDonald worked for Stone and Webster Engineering Corporation.
J. D. Graves worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Harold Newell served in the Army at Los Alamos during the Manhattan Project.
Kathleen “Kay” (Gavin) Florin was a clerk in the chemistry division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
