National Museum of Nuclear Science & History
George Caldwell worked for the J.A. Jones Construction Company.
Minnie (Heller) Steinberg was a junior biologist in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
D. R. Johnson worked for the Roane-Anderson Company.
Arnold Kramish was a physicist in the Manhattan Project and a member of the Special Engineering Detachment (SED) at Oak Ridge, Tennessee, the Philadelphia Navy Yard, and Los Alamos.
