Ambrose Knapinski

Frank H. Swoboda

Frank Swoboda was a staff worker at Los Alamos during the Manhattan Project.

Clyde R. Crawford

George W. Royster

George Royster was a civilian physicist working at the X-10 graphite reactor in Oak Ridge, Tennessee.

Gioacchino Failla

Gioacchino Failla was an Italian-American physicist who served as a consultant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.