National Museum of Nuclear Science & History
Saul Efron worked for the Roane-Anderson 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.
Karl Walther was a glassblower for Columbia University and Brookhaven National Laboratory. During the Manhattan Project, Walther worked as a senior glassblower at the Nash Garage Building at Columbia, where scientists developed the gaseous diffusion process.
H. L. Reimer worked for the Tennessee Eastman Corporation at the Y-12 Plant.