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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $990,208 | $1,109,973 | $1,855,319 | $3,140,168 | $1,667,385 | $1,822,798 | $2,279,935 |
| Decolourising earths & fuller's earth | $148,411 | $160,836 | | | | | |
| Fire-clay | $1,546,493 | $1,399,320 | $1,080,806 | $1,232,430 | $821,835 | $1,629,919 | $1,303,321 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $898,659 | $819,077 | $832,432 | $1,483,975 | $1,160,852 | $933,839 | $1,429,081 |
| Andalusite, kyanite & sillimanite | $413 | | | | | $20 | $2,730 |
| Mullite | $1 | $658 | $1,340 | | $63,000 | $159,488 | |
| Chamotte/dinas earths | $201,769 | $311,909 | $195,304 | $155,164 | $213,920 | $141,049 | $186,271 |
| Total | $3,785,954 | $3,801,773 | $3,965,201 | $6,011,737 | $3,926,992 | $4,687,113 | $5,201,338 |
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