| 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 | | | |
| 2529.21.00 | 00 | Containing by weight 97 percent or less of calcium fluoride | t | Free | | 13.5% |
| 2529.22.00 | 00 | Containing by weight more than 97 percent of calcium fluoride | t | Free | | $5.51/t |
| 2530.20 | | Kieserite, epsom salts (natural magnesium sulfates): | | | | |
| 2530.20.20 | 00 | Epsom salts | kg | Free | | 20% |
| 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% |
| 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 |
| 2602.00.00 | 40 | Containing less than 47 percent by weight of manganese | kg Mn kg | | | |
| 2602.00.00 | 60 | Containing 47 percent or more by weight of manganese | kg Mn kg | | | |
| 2603.00.00 | 20 | Lead content | Pb kg | | | |
| 2606.00.00 | 30 | Bauxite, calcined: | | | | |
| 2606.00.00 | 30 | Refractory grade | 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 |
| 2607.00.00 | 20 | Lead content | Pb kg | | | |
| 2608.00.00 | 20 | Lead content | Pb kg | | | |
| 2614.00.60 | 20 | Ilmenite and ilmenite sand | kg | | | |
| 2614.00.60 | 40 | Other (including rutile and rutile sand) | kg | | | |
| 2615 | | Niobium (columbium), tantalum, vanadium or zirconium ores and concentrates: | | | | |
| 2615.90.60 | 90 | Vanadium ores and concentrates | kg V2O5 kg | | | |
| 2616.10.00 | 20 | Lead content | Pb kg | | | |
| 2616.90.00 | 20 | Lead content | Pb 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: | | | | |
| 2619.00.30 | 00 | Ferrous scale | t | Free | | 73.8￠/t |
