"It is also possible to use uranium-233 as the fission fuel of a nuclear weapon, although this has been done only occasionally. The United States first tested U-233 as part of a bomb core in Operation Teapot in 1955." De emiatt nem szeretik: "The main difference is the co-presence of uranium-232, that makes uranium-233 very dangerous to work on, and quite easy to detect." U-233