W. T. Lewis

August “Gus” Knuth

August “Gus” Knuth was a millwright and carpenter who helped construct Chicago Pile-1. He was present on December 2, 1942 when the pile went critical in the first self-sustaining chain reaction in history.

Fredrika Lewis

Fredrika Lewis was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Frank Neill

Frank Neill worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Arthur K. King