National Museum of Nuclear Science & History
John Tempka (1923-2017) was an American engineer. Tempka was born in Boydsville, Ohio. He was studying at the University of Detroit when he was recruited to join the U.
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.
Howard Rosenthal served in the First Ordnance Squadron.
