| 2504 | | Natural graphite: | | | | |
| 2504.10 | | In powder or in flakes: | | | | |
| 2505 | | Natural sands of all kinds, whether or not colored, other than metal-bearing sands of chapter 26: | | | | |
| 2505.10.10 | 00 | Sand containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron | t | Free | | $1.97/t |
| 2506 | | Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: | | | | |
| 2506.10.00 | 10 | Sands (other than natural) containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron | t | | | |
| 2508 | | Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths: | | | | |
| 2510 | | Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk: | | | | |
| 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 | | Pumice stone | | Free | | Free |
| 2513.10.00 | 10 | Crude or in irregular pieces, including crushed pumice | kg | | | |
| 2513.20.10 | 00 | Crude or in irregular pieces | kg | Free | | Free |
| 2514.00.00 | 00 | Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape | t | Free | | 25% |
| 2515 | | Marble, travertine and other calcareous monumental or building stone of an apparent specific gravity of 2.5 or more, and alabaster, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: | | | | |
| 2515.12 | | Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: | | | | |
| 2516 | | Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: | | | | |
| 2516.12.00 | | Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape | | 2.8% | Free (A,AU,BH,CA, CL,E,IL,J,JO,MA, MX,P,SG) | 60% |
| 2516.20.20 | 00 | Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape | t | 3% | Free (A,AU,BH,CA, CL,E,IL,J,JO,MA, MX,P,SG) | 50% |
| 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 | | | |
| 2517.20.00 | 00 | Macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in subheading 2517.10 | t | Free | | 30% |
| 2517.41.00 | 00 | Granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated: | | | | |
Harmonized Tariff Schedule of the United States inquiry: 3203Ã
