|
| Sub-Chapter | 2005 | 2006 | 2007 |
| Salt (including table salt) | $3 | $331 | |
| Unroasted iron pyrites. | | $25,313 | |
| Natural graphite. | $24,084 | $87 | $18,124 |
| Natural sands of all kinds | | $1 | $557 |
| Kaolin and other kaolinic clays, whether or not calcined. | | | $86,880 |
| Other clays (not including expanded clays of heading 68.06), andalusite, ky ... | $118 | $215,533 | $422,082 |
| Pumice stone; emery; other natural abrasives | | $3,007 | $3,026 |
| Marble, travertine, ecaussine and other stone | | | $11,100 |
| Pebbles, gravel, broken or crushed stone | | $10,867 | |
| Limestone flux; limestone | $51 | | |
| Quicklime, slaked lime and hydraulic lime | $179,096 | | |
| Portland cement, aluminous cement, slag cement | $377,921 | $414,476 | $684,168 |
| Felspar; leucite and nepheline syenite | | | $979 |
| Total | $581,273 | $669,615 | $1,226,916 |
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