W. B. Caldwell

G. P. Darlington

Darlington worked for Stone and Webster Engineering Corporation.

A. L. Cronholm

Cronholm worked at the 100-F Area at Hanford during the Manhattan Project. 

Mary M. Fair

Mary Fair worked as a lab assistant at the Metallurgical Lab at the University of Chicago. She was not sure of the purpose of her work, but often used radiation detecting devices in the experiments.

William B. Gibson