National Museum of Nuclear Science & History
B. H. Ronfeld served in the 509th Headquarters.
Robert Ellingson arrived in Oak Ridge in June 1943. Shortly after Ellingson arrived, however, he was informed by his employer, Tennessee Eastman, that they already had too many chemists and chemical engineers.
Edna Sypult was a laboratory helper at the Metallurgical Laboratory in Chicago during the Manhattan Project.