Richard A. Vaughn

A. E. Bohnard

A. E. Bohnard worked for the J.A. Jones Construction Company.

Melvin A. Miller

Melvin A. Miller was a draftsman at the University of Chicago Met Lab. In 1946, he sketched two famous drawings of Chicago Pile-1 based on the descriptions of scientists who were present when it went critical.

E. F. Phinney

W. G. Steckline