284410 Natural Uranium, its Compounds; Alloys, Dispersions, Ceramic Products and Mixtures
284420 Enriched Uranium; Plutonium; Alloys, Dispersions, Ceramic Products, Mixtures
284430 Depleted Uranium, Thorium, Their Compounds; Alloys, Dispersions, Ceramic Products and Mixtures
284440 Radioactive Elements and Isotopes and Compounds; Alloys, Dispersion; Ceramic Products and Mixtures; Radioactive Residues
284450 Spent Fuel Elements (Cartridges) of Nuclear Reactors
