| 2507.00 | 000 | Kaolin and other kaolinic clays, whether or not calcined |
| 25.08 | | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths |
| 2508.50 | 000 | Andalusite, kyanite and sillimanite |
| 2509.00 | 000 | Chalk |
| 25.10 | | Natural calcium phosphates, natural aluminium calcium phosphates and phosphatic chalk |
| 2512.00 | 000 | 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 |
| 2514.00 | 000 | Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape |
| 25.15 | | Marble, travertine, ecaussine 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 | 000 | Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape |
| 25.16 | | 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 | 000 | Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape |
| 2604.00 | 000 | Nickel ores and concentrates |
| 25.17 | | 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 25.15 or 25.16, whether or not heat-treated |
| 2517.10 | 000 | 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 |
| 25.18 | | Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; dolomite ramming mix |
| 2519.90 | 091 | -- Magnesia clinker |
| 2521.00 | 000 | Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement |
| 25.22 | | Quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 28.25 |
| 2522.10 | 000 | Quicklime |
| 2522.20 | 000 | Slaked lime |
| 25.23 | | Portland cement, aluminous cement, slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers |
| 2523.10 | 000 | Cement clinkers |
| 25.26 | | Natural steatite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; talc |
Harmonized Tariff Schedule of Japans inquiry: 122
