J. R. Bobinson

H. W. Oldfield

H. W. Oldfield worked for the Roane-Anderson Company.

Dana Mitchell

Dana Mitchell was an American physicist.  He was in charge of procurement for the physics department at Columbia University during the first year of the Manhattan Project.

Joseph Singley

T. D. Gibbs

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