Opal MacDonald

H. C. Hill

Raymond F. Frank

Raymond Frank was a metallurgist at the University of Chicago and stayed with the Met Lab after graduating from the university.

Arthur R. Picott

Arthur R. Piccot attended the Bridgeport Engineering Institute. He later served at Ok Ridge to help procure “yellow cake” (a type of powdered uranium concentrate).

Bernard Weinstock

Bernard Weinstock was an American chemist. Weinstock was born in New York City. He studied at Columbia University, where he became part of the research team led by Harold Urey.