| 2606.00.00 | | Aluminum ores and concentrates | | Free | | $1/t |
| 2606.00.00 | 30 | Bauxite, calcined: | | | | |
| 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 | | | |
| 2615 | | Niobium (columbium), tantalum, vanadium or zirconium ores and concentrates: | | | | |
| 2615.90.30 | 00 | Synthetic tantalum-niobium (columbium) concentrates | kg | Free | | 30% |
| 2615.90.60 | 60 | Tantalum ores and concentrates | kg | | | |
| 2616 | | Precious metal ores and concentrates: | | | | |
| 2616.90.00 | 50 | Other precious metal content | g | | | |
| 2619.00 | | Slag, dross (other than granulated slag), scalings and other waste from the manufacture of iron or steel: | | | | |
| 2619.00.30 | 00 | Ferrous scale | t | Free | | 73.8¢/t |
| 2620 | | Slag, ash and residues (other than from the manufacture of iron or steel), containing arsenic, metals or their compounds: | | | | |
| 2620.40.00 | | Containing mainly aluminum | | Free | | Free |
| 2620.40.00 | 30 | Vanadium bearing materials | kg V2O5 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: | | | | |
| 2620.60.10 | 00 | Of a kind used only for the extraction of arsenic or the manufacture of its chemical compounds | kg | 5% | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,MA,MX, P,SG) | 25% |
| 2620.99.30 | 00 | Materials not provided for elsewhere in this heading containing by weight over 10 percent nickel | kg Ni kg | Free | | Free |
| 2620.99.75 | | 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 |
| 2620.99.75 | 20 | Vanadium bearing materials | kg V2O5 kg | | | |
| 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 | | Coal; briquettes, ovoids and similar solid fuels manufactured from coal: | | | | |
| 2701.11.00 | 00 | Coal, whether or not pulverized, but not agglomerated: | | | | |
| 2701.12.00 | | Bituminous coal | | Free | | Free |
Harmonized Tariff Schedule of the United States inquiry: 3920590000
