National Museum of Nuclear Science & History
Harry Reason was a janitor at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Leon D. Smith joined the Manhattan Project in 1944 and was assigned to the 509th Composite Group at Wendover Airfield in Utah.
Greenwalt worked at the 300 Area at Hanford during the Manhattan Project.
B. W. Hay worked for the Tennessee Eastman Corporation at the Y-12 Plant.