National Museum of Nuclear Science & History
Clarence Signaigo was a laboratory helper at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Attended the Texas College of Mines.
Snyder worked at the 300 Area at Hanford during the Manhattan Project.
M. Carlson worked for the Roane-Anderson Company.
N. N. Barwick worked for the Tennessee Eastman Corporation at the Y-12 Plant.