G. D. Brown

W. G. Phillips

W. G. Phillips worked for the Roane-Anderson Company.

J. C. Groom

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

Daniel J. Keefe

Daniel J. Keefe was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Arthur O. Carlson