E. G. Butts

Duffer Crawford

Duffer Crawford worked for the civilian contractor Kellex Coroporation in New York under the supervision of Judson Swearingen.

Mabel E. Pitman

Mabel Pitman worked for the United States Engineer District Office.

E. L. Pleninger

R. A. Cook

Cook worked at the 100-D Area at Hanford during the Manhattan Project.