| 2401.20.35 | 30 | Maryland | kg | | | |
| 2401.20.83 | 30 | Maryland | kg | | | |
| 2401.20.85 | 30 | Maryland | kg | | | |
| 2401.20.87 | 30 | Maryland | kg | | | |
| 2403.10.30 | 80 | Maryland | kg | | | |
| 2403.10.60 | 80 | Maryland | kg | | | |
| 2403.10.90 | 80 | Maryland | kg | | | |
| 2403.91.43 | 80 | Maryland | kg | | | |
| 2403.91.45 | 80 | Maryland | kg | | | |
| 2403.91.47 | 80 | Maryland | kg | | | |
| 2504.10.10 | 00 | Crystalline flake (not including flake dust) | kg | Free | | 3.6￠/kg |
| 2511 | | Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 2816: | | | | |
| 2511.10 | | Natural barium sulfate (barytes): | | | | |
| 2513 | | Pumice; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated: | | | | |
| 2513.20 | | Emery, natural corundum, natural garnet and other natural abrasives: | | | | |
| 2516 | | Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: | | | | |
| 2524.90.00 | 30 | Chrysotile: | | | | |
| 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: | | | | |
| 2530.90.10 | 00 | Natural cryolite; natural chiolite | t | Free | | Free |
| 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 |
| 2606.00.00 | 30 | Refractory grade | t | | | |
| 2617.90.00 | 30 | Beryllium ores and concentrates | kg | | | |
| 2620.60 | | Containing arsenic, mercury, thallium or their mixtures, of a kind used for the extraction of arsenic or those metalsor for the manufacture of their chemical compounds: | | | | |
| 2620.91.00 | 00 | Containing antimony, beryllium, cadmium, chromium or their mixtures | kg | Free | | 30% |
| 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 |
