Melvin G. Hopkins

Robert W. Ball

Robert Ball was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.

William Spack, Jr.

Richard Parse

Richard Parse worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Donald Hornig

Donald “Don” Hornig (1920-2013) was an American chemist. Hornig was recruited to join the laboratory at Los Alamos in 1944, just one year after receiving his doctorate in physcial chemistry from Harvard University.