| 2616 |  | Precious metal ores and concentrates: |  |  |  |  | 
| 2616.90.00 | 50 | Other precious metal content | g |  |  |  | 
| 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 | Containing mainly zinc: |  |  |  |  | 
| 2620.19.30 | 00 | Zinc dross and zinc skimmings | kg Zn kg | Free |  | 3.3¢/kg | 
| 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 | 
| 2620.30.00 |  | Containing mainly copper |  | Free |  | 8.8¢/kg on  copper content +  3.3¢/kg on lead content +  3.7¢/kg on zinc content | 
| 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% | 
| 2620.91.00 | 00 | Containing antimony, beryllium, cadmium, chromium or their mixtures | kg | Free |  | 30% | 
| 2620.99.10 | 00 | Containing mainly vanadium | kg V2O5 kg | Free |  | Free | 
| 2620.99.20 | 00 | Containing mainly tungsten | kg W kg | 17.6¢/kg on tungsten content +  3.8% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX, P,SG) | $1.32/kg on tungsten content +  40% | 
| 2620.99.30 | 00 | Materials not provided for elsewhere in this heading containing by weight over 10 percent nickel | kg Ni kg | Free |  | Free | 
| 2620.99.50 | 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 | 
| 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 |