National Museum of Nuclear Science & History
A. D. Lawrence worked for the Roane-Anderson Company.
Dr. Joseph Katz was a chemist at Argonne National Laboratory at the Metallurgical Lab in Chicago. Katz was a part of a team that studied ways to make the diffusion of U-235 to U-238.
Tappscott worked at the 100-F Area at Hanford during the Manhattan Project.
Rene Prestwood was an American nuclear chemist. Prestwood was recruited for the Manhattan Project as a young chemist from the University of California-Berkeley.