H. J. Hopkins

Gus Essig

Gus Essig began working on the Manhattan Project in May, 1946 in Dayton, Ohio. Essig was selected to work in the highly classified initiator program and spent several months at Los Alamos learning how to design and construct initiators.

W. C. Kay

R. L. Helgeson

Helgeson worked at the 300 Area at Hanford during the Manhattan Project.

N. D. Barker

N. D. Barker worked for the Tennessee Eastman Corporation at the Y-12 Plant.