331 Coke and semi-coke of coal, of lignite or of peat; retort carbon
332 Tar distilled from coal, from lignite or from peat, and other mineral tars
333 Petroleum oils and oils obtained from bituminous materials, other than crude; preparations n.e.c. containing by weight 70% or more of these oils, such oils being the basic constituents of the preparations
334 Petroleum gases and other gaseous hydrocarbons, except natural gas
335 Petroleum jelly; paraffin wax, micro-crystalline petroleum wax, slack wax, ozokerite, lignite wax, peat wax, other mineral waxes, and similar products; petroleum coke, petroleum bitumen and other residues of petroleum oils or of oils obtained from bituminous materials
336 Radioactive elements and isotopes and compounds; alloys, dispersions, ceramic products and mixtures containing these elements, isotopes or compounds; radioactive residues
337 Nuclear reactor fuel elements (cartridges)