| 2615.90.30 | 00 | Synthetic tantalum-niobium (columbium) concentrates | kg | Free | | 30% |
| 2615.90.60 | 30 | Niobium (columbium) ores and concentrates | kg | | | |
| 2615.90.60 | 60 | Tantalum ores and concentrates | kg | | | |
| 2615.90.60 | 90 | Vanadium ores and concentrates | kg V2O5 kg | | | |
| 2616 | | Precious metal ores and concentrates: | | | | |
| 2616.10.00 | | Silver ores and concentrates | | 0.8￠/kg on lead content | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,MA,MX, P,SG) | 8.8￠/kg on copper content + 3.3￠/kg on lead content + 3.7￠/kg on zinc content |
| 2616.10.00 | 30 | Zinc content | Zn kg | | | |
| 2616.90.00 | 30 | Zinc content | Zn kg | | | |
| 2617 | | Other ores and concentrates: | | | | |
| 2617.10.00 | 00 | Antimony ores and concentrates | kg Sb kg | Free | | Free |
| 2617.90.00 | 30 | Beryllium ores and concentrates | 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 |
| 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 | | | |
| 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 |
