National Museum of Nuclear Science & History
Clarence Signaigo was a laboratory helper at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Louis D. Wilson was a laborer at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
G. A. Nichols worked for the United States Engineer District Office.
Felix DePaula was born in Brooklyn, New York on June 3, 1926. He was drafted into the U.S. Army in 1944, and placed in the Army Corps of Engineers.