| 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 |
| 2530 | | Mineral substances not elsewhere specified or included: | | | | |
| 2610.00.00 | 20 | Having a chromium content equivalent to not more than 40 percent chromic oxide (Cr2O3) | t Cr2O3 t | | | |
| 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 |
| 2701.11.00 | 00 | Coal, whether or not pulverized, but not agglomerated: | | | | |
| 2702 | | Lignite, whether or not agglomerated, excluding jet: | | | | |
| 2702.10.00 | 00 | Lignite, whether or not pulverized, but not agglomerated | t | Free | | Free |
| 2703.00.00 | 00 | Peat (including peat litter), whether or not agglomerated | t | Free | | Free |
| 2704.00.00 | | Coke and semicoke of coal, of lignite or of peat, whether or not agglomerated; retort carbon | | Free | | Free |
| 2706.00.00 | 00 | Tar distilled from coal, from lignite or from peat, and other mineral tars, whether or not dehydrated or partially distilled, including reconstituted tars | liters | Free | | Free |
| 2710 | | Petroleum oils and oils obtained from bituminous minerals, other than crude; preparations not elsewhere specified or included, containing by weight 70 percent or more of petroleum oils or of oils obtained from bituminous minerals, these oils being the basic constituents of the preparations; waste oils: | | | | |
| 2710.11 | | Petroleum oils and oils obtained from bituminous minerals, other than crude; preparations not elsewhere specified or included, containing by weight 70 percent or more of petroleum oils or of oils obtained from bituminous minerals, these oils being the basic constituents of the preparations, other than waste oils: | | | | |
| 2710.11.45 | | Mixtures of hydrocarbons not elsewhere specified or included, which contain by weight not over 50 percent of any single hydrocarbon compound | | 10.5¢/bbl | Free (A+,AU,BH, CA,CL,D,IL,J+,JO, MA,MX,P,R,SG) | 21¢/bbl |
| 2710.19.05 | 05 | Having a Saybolt Universal viscosity at 37.8 degrees C of 45 seconds or more but not more than 125 seconds (No. 4-type fuel oils): | | | | |
| 2710.19.05 | 05 | Containing not more than 500 ppm of sulfur | bbl | | | |
| 2710.19.10 | 11 | Containing not more than 15 ppm of sulfur | bbl | | | |
| 2710.19.10 | 13 | Containing more than 15 ppm but not more than 500 ppm of sulfur | bbl | | | |
| 2710.19.10 | 15 | Having a Saybolt Universal viscosity at 37.8 degrees C of 45 seconds or more but not more than 125 seconds (No. 4-type fuel oils): | | | | |
| 2710.19.10 | 15 | Containing not more than 500 ppm of sulfur | bbl | | | |
| 2710.19.10 | 02 | Containing not more than 15 ppm of sulfur | bbl | | | |
| 2710.19.10 | 03 | Containing more than 15 ppm but not more than 500 ppm of sulfur | bbl | | | |
| 2710.19.10 | 05 | Containing not more than 15 ppm of sulfur | bbl | | | |
Harmonized Tariff Schedule of the United States inquiry: gaming
