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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Bentonite | $2,064,655 | $2,221,445 | $2,243,714 | $4,334,699 | $5,244,399 | $6,065,350 |
| Decolourising earths & fuller's earth | $8,073 | $18,636 | $12,006 | | | |
| Fire-clay | $109,285 | $78,392 | $106,270 | $211,617 | $152,697 | $268,640 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $3,524,204 | $6,138,381 | $6,202,557 | $7,807,276 | $6,595,312 | $6,851,950 |
| Andalusite, kyanite & sillimanite | $3,850 | $16,021 | $49,840 | $72,496 | $51,004 | $44,150 |
| Mullite | $81,195 | $363,535 | $333,795 | $895,689 | $944,162 | $2,093,660 |
| Chamotte/dinas earths | $2,104,741 | $1,055,396 | $2,234,073 | $1,610,819 | $1,147,239 | $698,180 |
| Total | $7,896,003 | $9,891,806 | $11,182,255 | $14,932,596 | $14,134,813 | $16,021,930 |
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