N. B. Hansen

Melvin Bengston

Melvin Bengston was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.

Frank M. Graham

Frank Graham worked for the Midwest Piping and Supply Company.

Egon Bretscher

Egon Bretscher (1901-1973) was a chemist and nuclear physicist and was involved in the British atomic bomb effort.

Cecil Kelly