James Collinsworth

Joseph LaRocco

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

Donald F. Hunt

Gladys Norton

Gladys Norton worked for the United States Engineer District Office.

Clarence Sproul

Clarence Grover Sproul worked as a machinist on the Manhattan Project in Los Alamos, NM from January through June 1945.