National Museum of Nuclear Science & History
Millard Ross was a staff worker at Los Alamos during the Manhattan Project.
Leonard Krouldis was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
A. C. Hudson worked for the Roane-Anderson Company.
Daniel N. Koshland was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
N.F. Bowman was a consultant at the Metallurgical Laboratory in Chicago during the Manhattan Project.