J. P. Conlon

H. M. Toms

H. M. Toms 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.

P. J. Crowder

R. Caldwell

Caldwell worked at the 200 West Area at Hanford during the Manhattan Project.