C. H. Hemmel, Jr.

A. H. Frost

A. H. Frost worked for the Tennessee Eastman Corporation at the Y-12 Plant.

James H. Porterie

James Porterie was a security guard at Los Alamos tasked with guarding bomb components. Porterie went to Aberdeen Proving Ground for Ordnance School before volunteering for an assignment at Los Alamos.

E. J. O’Brien

O'Brien worked for Stone and Webster Engineering Corporation.

Herbert Souder