National Museum of Nuclear Science & History
Jack Rose was a machinist and armorer in the Special Engineering Detachment (SED) assigned to the 509th Composite Group in Wendover, Utah.
Donald Engelkemeior was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Rubie Schaffer (1920-2008) was a staff worker at Los Alamos during the Manhattan Project.
