National Museum of Nuclear Science & History
Harold Smith worked for the Kellex Corporation at the K-25 Plant.
Richard H. Foss served in the 1st Ordnance Squadron.
John Vach was a guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Hayes worked at the 300 Area at Hanford during the Manhattan Project.
John A. Simpson Jr. (1916-2000) was a distinguished American nuclear physicist and astrophysicist. Simpson was born on November 3, 1916 in Portland, Oregon.
