National Museum of Nuclear Science & History
Grafton worked in the United States Engineer District Office.
Edna Sypult was a laboratory helper at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Robert Penneman was an American chemist. Penneman was born in 1919 in Springfield, Illinois. He received a B.
George Briggs was only 20 years old when he began working with the Special Engineer Detachment at Los Alamos.
