Henry W. Wood Jr.

Harry Gagnobin

E. J. Murphy

E. J. Murphy worked for the United States Engineer District Office.

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.

T. P. Twohey

Twohey worked for Stone and Webster Engineering Corporation.