Dec. 19—A sealed compartment with safety gloves attached caught fire at Los Alamos National Laboratory in November, resulting in officials shutting down a portion of the site's plutonium facility for ...
“Fat Man,” the atomic bomb dropped by the U.S. on Nagasaki, Japan, in 1945, carried about 6.2 kilograms of enriched plutonium, roughly the size of a softball. The origin of that deadly hunk of metal ...