| 2530.90.10 | 00 | Natural cryolite; natural chiolite | t | Free | | Free |
| 2530.90.80 | | Other | | Free | | 0.3¢/kg |
| 2530.90.80 | 15 | Earth colors | kg | | | |
| 2530.90.80 | 50 | Other | kg | | | |
| 2601.11.00 | | Iron ores and concentrates, other than roasted iron pyrites: | | | | |
| 2601.11.00 | 90 | Other | t | | | |
| 2601.12.00 | 90 | Other | t | | | |
| 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 | | | |
| 2604.00.00 | 80 | Other metal content | kg | | | |
| 2606.00.00 | 60 | Other | t | | | |
| 2606.00.00 | 90 | Other | t | | | |
| 2610.00.00 | | Chromium ores and concentrates | | Free | | Free |
| 2610.00.00 | 20 | Having a chromium content equivalent to not more than 40 percent chromic oxide (Cr2O3) | t Cr2O3 t | | | |
| 2610.00.00 | 40 | Having a chromium content equivalent to more than 40 percent but less than 46 percent chromic oxide (Cr2O3) | t Cr2O3 t | | | |
| 2610.00.00 | 60 | Having a chromium content equivalent to 46 percent or more chromic oxide (Cr2O3) | t Cr2O3 t | | | |
| 2612 | | Uranium or thorium ores and concentrates: | | | | |
| 2612.20.00 | 00 | Thorium ores and concentrates | t | Free | | Free |
| 2613.90.00 | 00 | Other | kg Mo kg | 17.8¢/kg on molybdenum content | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,MA,MX, P,SG) | 77.2¢/kg on molybdenum content |
| 2614.00.30 | 00 | Synthetic rutile | kg | Free | | 30% |
| 2614.00.60 | | Other | | Free | | Free |
| 2614.00.60 | 40 | Other (including rutile and rutile sand) | kg | | | |
| 2615.90 | | Other: | | | | |
| 2615.90.30 | 00 | Synthetic tantalum-niobium (columbium) concentrates | kg | Free | | 30% |
Harmonized Tariff Schedule of the United States inquiry: 3920590000
