The 19th layer of graphite covering layer 18 containing slugs of uranium oxide. Parts of the wooden scaffolding and surrounding balloon cloth also are visible.2043 viewsApr 28, 2026 at 04:04 AM
First pile scientists at the University of Chicago on December 2, 1946, the fourth anniversary of their success.2260 viewsApr 28, 2026 at 04:04 AM