National Museum of Nuclear Science & History
F. F. Brown worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Haydn Jones was a research assistant in the Physics Division at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
J. N. Holt worked for the United States Engineer District Office.
H. J. Curtis worked for Clinton Laboratories at the X-10 Reactor.