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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $6,117,009 | $6,924,868 | $7,637,597 | $7,710,531 | $5,519,536 | $7,232,848 | $10,216,790 |
| Decolourising earths & fuller's earth | $685,215 | $862,895 | $897,894 | | | | |
| Fire-clay | $19,013,340 | $19,750,939 | $19,987,443 | $24,197,864 | $17,065,827 | $18,019,221 | $17,976,899 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $8,575,439 | $8,392,444 | $5,938,495 | $7,217,703 | $5,083,843 | $5,341,674 | $6,297,257 |
| Andalusite, kyanite & sillimanite | $575,151 | $534,238 | $813,857 | $513,818 | $510,375 | $676,097 | $758,986 |
| Mullite | $1,764,699 | $1,921,500 | $2,298,809 | $1,937,287 | $1,052,293 | $1,431,837 | $1,888,008 |
| Chamotte/dinas earths | $28,159 | $64,186 | | $26,979 | $35,340 | $554,471 | $642,386 |
| Total | $36,759,012 | $38,451,070 | $37,574,095 | $41,604,182 | $29,267,214 | $33,256,148 | $37,780,326 |
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