National Museum of Nuclear Science & History
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.
William Gray worked for the Roane-Anderson Company.
William Penney (1909-1991) was a British mathematician and physicist. William Penney’s first assignment of the war was a research position with the Royal Navy, studying collisions, explosions and shockwaves and searching for ways to use hydrodynamics to assist the navy.