National Museum of Nuclear Science & History
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.
Leroy Jackson was transferred into the Manhattan District, the branch of the United States Army Corps of Engineers tasked with overseeing the construction of critical Manhattan Project sites, shortly after its formation in 1942.
Mr. U. M. Staebler graduated from the University of Kansas with a B.S. degree in Physics in 1942, and had since devoted his entire professional career to the field of nuclear energy.