| 2403.91.43 | | To be used in products other than cigarettes | | 19.9￠/kg | Free (A+,AU,BH, CA,D,E,IL,J,MA, MX,P,SG,CL) | $1.10/kg |
| 2403.91.45 | | Described in additional U.S. note 5 to this chapter and entered pursuant to its provisions | | 19.9￠/kg | Free (A+,BH,CL,D, E,J,MA,P,SG) | $1.10/kg |
| 2403.99.30 | | To be used in products other than cigarettes | | 24.7￠/kg | Free (A+,AU,BH, CA,CL,D,E,IL, J,MX,P,SG) 9.8￠/kg (MA) | $1.21/kg |
| 2403.99.60 | | Described in additional U.S. note 5 to this chapter and entered pursuant to its provisions | | 24.7￠/kg | Free (A+,BH,CL,D, E,J,MA,P,SG) | $1.21/kg |
| 2502.00.00 | 00 | Unroasted iron pyrites | t | Free | | Free |
| 2504.10 | | In powder or in flakes: | | | | |
| 2510 | | Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk: | | | | |
| 2511 | | Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 2816: | | | | |
| 2511.10 | | Natural barium sulfate (barytes): | | | | |
| 2512.00.00 | 00 | Siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less | t | Free | | Free |
| 2513 | | Pumice; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated: | | | | |
| 2513.10.00 | 10 | Crude or in irregular pieces, including crushed pumice | kg | | | |
| 2513.20 | | Emery, natural corundum, natural garnet and other natural abrasives: | | | | |
| 2513.20.10 | 00 | Crude or in irregular pieces | kg | Free | | Free |
| 2516.12.00 | 30 | Having a thickness of 7.5 cm or more | t | | | |
| 2516.90.00 | 30 | Having a thickness of 7.5 cm or more | t | | | |
| 2517 | | Pebbles, gravel, broken or crushed stone, of a kind commonly used for concrete aggregates, for road metalling, or for railway or other ballast; shingle and flint, whether or not heat-treated; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated: | | | | |
| 2517.10.00 | | Pebbles, gravel, broken or crushed stone, of a kind commonly used for concrete aggregates, for road metalling, or for railway or other ballast, shingle and flint, whether or not heat-treated | | Free | | 30% |
| 2517.10.00 | 15 | Pebbles and gravel | t | | | |
| 2517.10.00 | 20 | Limestone, except pebbles and gravel | t | | | |
| 2517.41.00 | 00 | Granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated: | | | | |
| 2519 | | Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure: | | | | |
| 2519.10.00 | 00 | Natural magnesium carbonate (magnesite) | t | Free | | $10.33/t |
| 2519.90.10 | 00 | Fused magnesia and dead-burned (sintered) magnesia | kg | Free | | 1.7￠/kg |
| 2519.90.20 | 00 | Caustic calcined magnesite | t | Free | | $20.70/t |
