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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $2,038,099 | $2,175,752 | $3,043,804 | $3,213,180 | $1,838,031 | $1,978,950 | $2,378,072 |
| Decolourising earths & fuller's earth | $46,813 | $67,641 | | | | | |
| Fire-clay | $79,013 | $80,154 | $85,189 | $59,716 | $19,761 | $75,498 | $44,405 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $184,308 | $107,119 | $190,379 | $231,102 | $133,336 | $92,703 | $8,895 |
| Mullite | | | | | $79,236 | $99,864 | |
| Total | $2,348,233 | $2,430,666 | $3,319,372 | $3,503,998 | $2,070,364 | $2,247,015 | $2,431,372 |
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