| 2520 | | Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulfate) whether or not colored, with or without small quantities of accelerators or retarders: | | | | |
| 2528 | | Natural borates and concentrates thereof (calcined or not), but not including borates separated from natural brine; natural boric acid containing not more than 85 percent of H3BO3 calculated on the dry weight: | | | | |
| 2528.10.00 | 00 | Natural sodium borates and concentrates thereof (whether or not calcined) | kg | Free | | Free |
| 2606.00.00 | 30 | Bauxite, calcined: | | | | |
| 2704.00.00 | 11 | Coke larger than 100 mm (4 inches) in maximum diameter and at least 50 percent of which is retained on a 100-mm (4-inch) sieve after drop shatter testing pursuant to ASTM D 3038, of a kind used in foundries | t | | | |
| 2708 | | Pitch and pitch coke, obtained from coal tar or from other mineral tars: | | | | |
| 2709.00 | | Petroleum oils and oils obtained from bituminous minerals, crude: | | | | |
| 2710 | | Petroleum oils and oils obtained from bituminous minerals, other than crude; preparations not elsewhere specified or included, containing by weight 70 percent or more of petroleum oils or of oils obtained from bituminous minerals, these oils being the basic constituents of the preparations; waste oils: | | | | |
| 2710.11 | | Petroleum oils and oils obtained from bituminous minerals, other than crude; preparations not elsewhere specified or included, containing by weight 70 percent or more of petroleum oils or of oils obtained from bituminous minerals, these oils being the basic constituents of the preparations, other than waste oils: | | | | |
| 2712 | | Petroleum jelly; paraffin wax, microcrystalline petroleum wax, slack wax, ozokerite, lignite wax, peat wax, other mineral waxes and similar products obtained by synthesis or by other processes, whether or not colored: | | | | |
| 2713 | | Petroleum coke, petroleum bitumen and other residues of petroleum oils or of oils obtained from bituminous minerals: | | | | |
| 2713.11.00 | 00 | Not calcined | t | Free | | Free |
| 2713.12.00 | 00 | Calcined | t | Free | | 45% |
| 2713.90.00 | 00 | Other residues of petroleum oils or of oils obtained from bituminous materials | t | Free | | Free |
| 2809 | | Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined: | | | | |
| 2818 | | Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide: | | | | |
| 2818.10 | | Artificial corundum, whether or not chemically defined: | | | | |
| 2818.10.20 | | In grains, or ground, pulverized or refined | | 1.3% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 4.1% |
| 2821 | | Iron oxides and hydroxides; earth colors containing 70 percent or more by weight of combined iron evaluated as Fe2O3: | | | | |
| 2830 | | Sulfides; polysulfides, whether or not chemically defined: | | | | |
| 2835 | | Phosphinates (hypophosphites), phosphonates (phos- phites) and phosphates; polyphosphates, whether or not chemically defined: | | | | |
| 2840.11.00 | 00 | Disodium tetraborate (refined borax): | | | | |
| 2842 | | Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides: | | | | |
| 2842.10.00 | 00 | Double or complex silicates, including alumino- silicates whether or not chemically defined | kg | 3.7% | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,K,MA,MX, P,SG) | 25% |
| 2843 | | Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals: | | | | |
