Leo J. Czaja

John D. Black

John Black worked for the J.A. Jones Construction Company.

Michael Cefola

Michael Cefola was an American chemist and a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

M. O. McKibbon

Martha Ross

Martha Jackson Ross studied history and English at Montevallo College for Women. She worked on the Manhattan Project at Oak Ridge.