| 2525 | | Mica, including splittings; mica waste: | | | | |
| 2526 | | Natural steatite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rect- angular (including square) shape;talc: | | | | |
| 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: | | | | |
| 2530 | | Mineral substances not elsewhere specified or included: | | | | |
| 2601 | | Iron ores and concentrates, including roasted iron pyrites: | | | | |
| 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 |
| 2603.00.00 | 30 | Zinc content | Zn kg | | | |
| 2607.00.00 | 30 | Zinc content | Zn kg | | | |
| 2608.00.00 | | Zinc ores and concentrates | | Free | | 8.8¢/kg on copper content + 3.3¢/kg on lead content + 3.7¢/kg on zinc content |
| 2608.00.00 | 30 | Zinc content | Zn kg | | | |
| 2614.00.60 | 40 | Other (including rutile and rutile sand) | kg | | | |
| 2616.10.00 | 30 | Zinc content | Zn kg | | | |
| 2616.90.00 | 30 | Zinc content | Zn kg | | | |
| 2620.11.00 | 00 | Containing mainly zinc: | | | | |
| 2620.11.00 | 00 | Hard zinc spelter | kg | Free | | 5% |
| 2620.19.30 | 00 | Zinc dross and zinc skimmings | kg Zn kg | Free | | 3.3¢/kg |
| 2620.19.60 | 30 | Zinc content | Zn kg | | | |
| 2620.21.00 | 30 | Zinc content | Zn kg | | | |
| 2620.29.00 | 30 | Zinc content | Zn kg | | | |
| 2620.30.00 | 30 | Zinc content | Zn kg | | | |
| 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 |
| 2703.00.00 | 00 | Peat (including peat litter), whether or not agglomerated | t | Free | | Free |