National Museum of Nuclear Science & History
John Rowell was a staff worker at Los Alamos during the Manhattan Project.
Spencer Harrison Bush was born on April 4, 1920 in Flint, Michigan. He devoted over 50 years to ensuring nuclear safety and working on the development of nuclear power codes and standards.
John L. Willoughby served as a sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Bockscar.
John A. Simpson Jr. (1916-2000) was a distinguished American nuclear physicist and astrophysicist. Simpson was born on November 3, 1916 in Portland, Oregon.
Attended the University of Pennsylvania.
