| 2528.10.00 | 00 | Natural sodium borates and concentrates thereof (whether or not calcined) | kg | Free |  | Free | 
| 2528.90.00 | 10 | Natural calcium borates | kg |  |  |  | 
| 2530.20 |  | Kieserite, epsom salts (natural magnesium sulfates): |  |  |  |  | 
| 2530.90.10 | 00 | Natural cryolite; natural chiolite | t | Free |  | Free | 
| 2530.90.20 | 00 | Natural micaceous iron oxides | kg | 2.9% | Free (A,AU,BH,CA, CL,E,IL,J,JO,MA, MX,P,SG) | 20% | 
| 2601 |  | Iron ores and concentrates, including roasted iron pyrites: |  |  |  |  | 
| 2601.11.00 |  | Iron ores and concentrates, other than roasted iron pyrites: |  |  |  |  | 
| 2601.11.00 |  | Non-agglomerated |  | Free |  | Free | 
| 2601.11.00 | 30 | Concentrates | t |  |  |  | 
| 2601.12.00 |  | Agglomerated |  | Free |  | Free | 
| 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 | 
| 2603.00.00 |  | Copper ores and concentrates |  | 1.7¢/kg on lead   content | Free (A,AU,BH, CA,CL,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 | 
| 2604.00.00 |  | Nickel ores and concentrates |  | Free |  | Free | 
| 2605.00.00 | 00 | Cobalt ores and concentrates | kg Co kg | Free |  | Free | 
| 2606.00.00 |  | Aluminum ores and concentrates |  | Free |  | $1/t | 
| 2607.00.00 |  | Lead ores and concentrates |  | 1.1¢/kg on lead   content | Free (A*,AU,BH, CA,CL,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 | 
| 2608.00.00 |  | Zinc ores and concentrates |  | Free |  | 8.8¢/kg on copper content +  3.3¢/kg on lead content +  3.7¢/kg on zinc content | 
| 2609.00.00 | 00 | Tin ores and concentrates | t Sn t | Free |  | Free | 
| 2610.00.00 |  | Chromium ores and concentrates |  | Free |  | Free | 
| 2611.00 |  | Tungsten ores and concentrates: |  |  |  |  | 
| 2611.00.60 | 00 | Concentrates | kg W kg | 37.5¢/kg on tungsten content | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX, P,SG) | $1.10/kg on tungsten content | 
| 2612 |  | Uranium or thorium ores and concentrates: |  |  |  |  | 
| 2612.10.00 | 00 | Uranium ores and concentrates | kg | Free |  | Free | 
| 2612.20.00 | 00 | Thorium ores and concentrates | t | Free |  | Free | 
| 2613 |  | Molybdenum ores and concentrates: |  |  |  |  |