James R. McGuffey

Melvin A. Miller

Melvin A. Miller was a draftsman at the University of Chicago Met Lab. In 1946, he sketched two famous drawings of Chicago Pile-1 based on the descriptions of scientists who were present when it went critical.

Donald W. Hurst

Donald Hurst worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Pete Brazeal

John DePersio

DePersio worked in the United States Engineer District Office.