National Museum of Nuclear Science & History
M. E. Gregson worked for the Roane-Anderson Company.
A. J. Metler worked for Clinton Laboratories at the X-10 Reactor.
John M. “Jack” Hubbard was an American meteorologist. Considered one of the brightest meteorologists in the world by the early 1940s, Hubbard was a former student of the renowned meteorologist Irving Crick.
John Crawford was a physicist and research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
