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| Sub-Chapter | 2005 | 2006 | 2007 | 2008 |
| Natural sands of all kinds | | | $552 | $160,367 |
| Other clays (not including expanded clays of heading 68.06), andalusite, ky ... | | $37 | $964 | $125 |
| Siliceous fossil meals | $1,415 | | | |
| Pumice stone; emery; other natural abrasives | | | $27,169 | $54,338 |
| Granite, porphyry, basalt, sandstone and other stone | | | $1,737 | |
| Pebbles, gravel, broken or crushed stone | $412,965 | $541,874 | $1,455,320 | $2,574,533 |
| Limestone flux; limestone | | | | $15 |
| Portland cement, aluminous cement, slag cement | $32,948 | $103,750 | | |
| Total | $447,328 | $645,661 | $1,485,742 | $2,789,378 |
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