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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $774,651 | $797,360 | $1,149,527 | $926,010 | $718,867 | $2,155,661 | $1,093,888 |
| Decolourising earths & fuller's earth | $86,388 | $116,028 | | | | | |
| Fire-clay | $7,532 | $126,863 | $3,933 | $83,922 | $54,486 | $28,806 | $647 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $278,825 | $306,015 | $652,632 | $441,031 | $402,807 | $886,888 | $949,256 |
| Andalusite, kyanite & sillimanite | $3,161 | $1,693 | $2,785 | $519 | $394 | | |
| Chamotte/dinas earths | $48,768 | $98,516 | $121,551 | $102,464 | $51,986 | $58,738 | $126,612 |
| Total | $1,199,325 | $1,446,475 | $1,930,428 | $1,553,946 | $1,228,540 | $3,130,093 | $2,170,403 |
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