Earl L. Carlon

G. Hedrick

G. Hedrick worked for the Comstock-Bryant Electric Company.

R. F. Gornall

Elizabeth Campbell

Elizabeth Campbell was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Seymour Calvert

Seymour Calvert served for 11 months in the Special Engineering Detachment at Los Alamos. He specialized as a chemical engineer, and carried out experiments with beryllium that were often dangerous.