| 2528 | | Natural borates and concentrates thereof (calcined or not), but not including borates separated from natural brine; natural boric acid containing not more than 85 percent of H3BO3 calculated on the dry weight: | | | | |
| 2528.10.00 | 00 | Natural sodium borates and concentrates thereof (whether or not calcined) | kg | Free | | Free |
| 2528.90.00 | | Other | | Free | | Free |
| 2528.90.00 | 10 | Natural calcium borates | kg | | | |
| 2528.90.00 | 50 | Other | kg | | | |
| 2530.90.80 | | Other | | Free | | 0.3￠/kg |
| 2530.90.80 | 10 | Celestite | kg | | | |
| 2530.90.80 | 15 | Earth colors | kg | | | |
| 2530.90.80 | 50 | Other | kg | | | |
| 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 |
| 2608.00.00 | 10 | Copper content | Cu kg | | | |
| 2608.00.00 | 20 | Lead content | Pb kg | | | |
| 2608.00.00 | 30 | Zinc content | Zn kg | | | |
| 2608.00.00 | 40 | Silver content | Ag g | | | |
| 2608.00.00 | 50 | Gold content | Au g | | | |
| 2618.00.00 | 00 | Granulated slag (slag sand) from the manufacture or iron or steel | t | Free | | 10% |
| 2620.99.85 | 00 | Other | kg | Free | | 30% |
| 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 | | | |
| 2707.50.00 | 00 | Other aromatic hydrocarbon mixtures of which 65 percent or more by volume (including losses) distills at 250 degrees C by the ASTM D 86 method | kg liters | Free | | Free |
| 2708 | | Pitch and pitch coke, obtained from coal tar or from other mineral tars: | | | | |
| 2708.10.00 | 00 | Pitch | kg | Free | | Free |
| 2708.20.00 | 00 | Pitch coke | kg | Free | | Free |
| 2710.11.18 | | Motor fuel blending stock | | 52.5￠/bbl | Free (A+,AU,BH, CA,CL,D,IL,J+,JO, MA,MX,P, R,SG) | $1.05/bbl |
| 2710.11.18 | 05 | Reformulated blendstock for oxygenate blending (RBOB) | bbl | | | |
| 2710.11.18 | 90 | Other | bbl | | | |
