Jack F. Hansjergen

Charles W. Sweeney

Charles W. Sweeney served as a major in the 393rd Bombardment Squadron. He was regularly assigned to the Great Artiste as the aircraft commander and participated in the mission to bomb Hiroshima as co-pilot of the Great Artiste.

John A. Simpson Jr.

John A. Simpson Jr. (1916-2000) was a distinguished American nuclear physicist and astrophysicist. Simpson was born on November 3, 1916 in Portland, Oregon.

Joseph Katz

Dr. Joseph Katz was a chemist at Argonne National Laboratory at the Metallurgical Lab in Chicago. Katz was a part of a team that studied ways to make the diffusion of U-235 to U-238.

H.J. Sinclair