National Museum of Nuclear Science & History
Henry J. Wollweber was a guard at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
John Klein was a member of the Special Engineering Detachment. He worked at the Metallurgical Lab at the University of Chicago and at Los Alamos.
S. J. Helfman worked for the J.A. Jones Construction Company.
Julius “Osty” Ostspowicz was a glassblower in the Chemistry Division at the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.
