| 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 |
| 2529.21.00 | 00 | Containing by weight 97 percent or less of calcium fluoride | t | Free | | 13.5% |
| 2529.22.00 | 00 | Containing by weight more than 97 percent of calcium fluoride | t | Free | | $5.51/t |
| 2530 | | Mineral substances not elsewhere specified or included: | | | | |
| 2602.00.00 | | Manganese ores and concentrates, including ferruginous manganese ores and concentrates with a manganese con- tent of 20 percent or more, calculated on the dry weight | | Free | | 2.2¢/kg on manganese content |
| 2602.00.00 | 40 | Containing less than 47 percent by weight of manganese | kg Mn kg | | | |
| 2602.00.00 | 60 | Containing 47 percent or more by weight of manganese | kg Mn kg | | | |
| 2619.00 | | Slag, dross (other than granulated slag), scalings and other waste from the manufacture of iron or steel: | | | | |
| 2620.99.30 | 00 | Materials not provided for elsewhere in this heading containing by weight over 10 percent nickel | kg Ni kg | Free | | Free |
| 2620.99.50 | 00 | Slag containing by weight over 40 percent titanium, and which if containing over 2 percent by weight of copper, lead, or zinc is not to be treated for the recovery thereof | kg | Free | | Free |
| 2620.99.75 | | Other materials which are residues not advanced in value or condition by any means, and which if containing over 2 percent by weight of copper, lead or zinc are not to be treated for the recovery thereof | | Free | | Free |
| 2621 | | Other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste: | | | | |
| 2621.10.00 | 00 | Ash and residues from the incineration of municipal waste | t | Free | | Free |
| 2701.11.00 | 00 | Coal, whether or not pulverized, but not agglomerated: | | | | |
| 2702 | | Lignite, whether or not agglomerated, excluding jet: | | | | |
| 2702.10.00 | 00 | Lignite, whether or not pulverized, but not agglomerated | t | Free | | Free |
| 2703.00.00 | 00 | Peat (including peat litter), whether or not agglomerated | t | Free | | Free |
| 2704.00.00 | | Coke and semicoke of coal, of lignite or of peat, whether or not agglomerated; retort carbon | | Free | | Free |
| 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 | | | |
| 2705.00.00 | 00 | Coal gas, water gas, producer gas and similar gases, other than petroleum gases and other gaseous hydrocarbons | thousand m3 kg | Free | | Free |
| 2706.00.00 | 00 | Tar distilled from coal, from lignite or from peat, and other mineral tars, whether or not dehydrated or partially distilled, including reconstituted tars | liters | Free | | Free |
| 2707 | | Oils and other products of the distillation of high temperature coal tar; similar products in which the weight of the aromatic constituents exceeds that of the nonaromatic constituents: | | | | |
| 2707.50.00 | 00 | Other aromatic hydrocarbon mixtures of which 65 percent or more by volume (including losses) distills at 250 degrees C by the ASTM D 86 method | kg liters | Free | | Free |
| 2707.99.40 | 00 | Carbazole having a purity of 65 percent or more by weight | kg | 0.9¢/kg + 3% | Free (A,AU,CA,BH, CL,E,IL,J,JO,L, MA,MX,P,SG) | 15.4¢/kg + 40% |
Harmonized Tariff Schedule of the United States inquiry: 3920590000
