| 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 | 20 | Lead content | Pb kg | | | |
| 2616.10.00 | 80 | Gold content | Au g | | | |
| 2616.90.00 | 20 | Lead content | Pb kg | | | |
| 2616.90.00 | 40 | Gold content | Au g | | | |
| 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 | | | |
| 2618.00.00 | 00 | Granulated slag (slag sand) from the manufacture or iron or steel | t | Free | | 10% |
| 2619.00 | | Slag, dross (other than granulated slag), scalings and other waste from the manufacture of iron or steel: | | | | |
| 2620 | | Slag, ash and residues (other than from the manufacture of iron or steel), containing arsenic, metals or their compounds: | | | | |
| 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 | 20 | Lead content | Pb kg | | | |
| 2620.19.60 | 50 | Gold content | Au g | | | |
| 2620.21.00 | | Containing mainly lead: | | | | |
| 2620.21.00 | | Leaded gasoline sludges and leaded anti- knock compound sludges | | Free | | 8.8¢/kg on copper content + 3.3¢/kg on lead content + 3.7¢/kg on zinc content |
| 2620.21.00 | 20 | Lead content | Pb kg | | | |
| 2620.21.00 | 50 | Gold content | Au g | | | |
| 2620.29.00 | 50 | Gold content | Au g | | | |
| 2620.29.00 | 20 | Lead content | Pb kg | | | |
Harmonized Tariff Schedule of the United States inquiry: 3920590000
