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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $25,076,388 | $28,163,123 | $34,380,564 | $38,660,965 | $29,720,200 | $28,900,321 | $30,317,098 |
| Decolourising earths & fuller's earth | $11,218 | $26,921 | | | | | |
| Fire-clay | $236,204 | $1,227,310 | $158,024 | $485,397 | $195,976 | $166,475 | $174,332 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $953,715 | $668,756 | $1,347,982 | $2,492,021 | $1,799,237 | $2,749,422 | $2,991,608 |
| Mullite | $5,713 | $8,960 | $233 | $2,283 | $56,861 | $86,673 | $64,484 |
| Chamotte/dinas earths | $722,853 | $821,202 | $1,206,185 | $1,523,536 | $1,950,271 | $2,822,014 | $2,348,445 |
| Total | $27,006,091 | $30,916,272 | $37,092,988 | $43,164,202 | $33,722,545 | $34,724,905 | $35,895,967 |
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