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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $7,920,927 | $8,760,415 | $10,572,737 | $15,344,086 | $10,536,858 | $19,285,662 | $21,010,647 |
| Decolourising earths & fuller's earth | $9,420 | | | | | | |
| Fire-clay | $14,449 | $28,193 | $30,771 | $52,303 | $63,759 | $66,546 | $49,293 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $13,751 | $61,657 | $67,529 | $22,027 | $6,367 | $28,245 | $11,666 |
| Andalusite, kyanite & sillimanite | | $121 | $20 | | | $43 | |
| Chamotte/dinas earths | $61 | $977 | $2,320 | $3,602 | | $2,295 | |
| Total | $7,958,608 | $8,851,363 | $10,673,377 | $15,422,018 | $10,606,984 | $19,382,791 | $21,071,606 |
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