Herbert M. Okun

Frank Karcher

Sergeant Frank Karcher was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Niels Bohr

Niels Bohr (1885-1962) was a Danish physicist and winner of the 1922 Nobel Prize in Physics.  Bohr began his work on the Manhattan Project after fleeing to Sweden from Denmark because of German occupation in 1943.

John F. Schafnitz

Henry Cruse