Robert R. Clifton

George Thom

Arthur “Pete” V. Peterson

Colonel Arthur “Pete” V. Peterson was the Army’s area engineer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Seymour Calvert

Seymour Calvert served for 11 months in the Special Engineering Detachment at Los Alamos. He specialized as a chemical engineer, and carried out experiments with beryllium that were often dangerous.

George M. Farley

George Farley worked for the Tennessee Eastman Corporation at the Y-12 Plant.