National Museum of Nuclear Science & History
H. L. Roland worked for the Midwest Piping and Supply Company.
Clarence Signaigo was a laboratory helper at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Larry DeCuir (1922- ) was an officer in the 509th Composite Group on Tinian Island during World War II.
Eleanor Caldwell was a laboratory technician in the Health Division at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
