Harold E. Timberly

P. R. Jernigan

Jernigan worked for Stone and Webster Engineering Corporation.

James McIntosh

James McIntosh was a draftsman at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

C. M. Young

Denise Kiernan

Denise Kiernan has worked as a journalist and producer. She is best known for The Girls of Atomic City, which came out in March 2013 and immediately shot to the top of the New York Times bestsellers list – and stayed there.