W. W. Zacovie

Frank J. Mayeran

R. H. Eichorn

R. H. Eichorn worked for the Roane-Anderson Company.

E. A. Taggard

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.