National Museum of Nuclear Science & History
Edna Sypult was a laboratory helper at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Clarence H. Mathews was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Lulu Slaughter was a laboratory assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Cheney worked in the United States Engineer District Office.
