J. L. Dreher

G. F. Walter

E. W. Seckendorff

Seckendorff worked for Stone and Webster Engineering Corporation.

H. C. Fistere

H. C. Fistere worked for the Watson-Flagg Engineering Company.

W. L. Ginkel

W. L. Ginkel worked for the Tennessee Eastman Corporation at the Y-12 Plant.