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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $2,023,201 | $1,652,175 | $2,737,978 | $3,206,728 | $2,328,153 | $1,377,312 | $2,029,392 |
| Decolourising earths & fuller's earth | $495,011 | $479,798 | | | | | |
| Fire-clay | $477,731 | $656,405 | $714,042 | $962,278 | $575,863 | $722,829 | $744,596 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $3,134,168 | $2,792,686 | $3,484,585 | $4,248,450 | $1,719,920 | $2,472,293 | $1,399,843 |
| Andalusite, kyanite & sillimanite | $10,813 | $29,098 | $37,266 | $26,439 | $5,683 | $20,077 | $102,642 |
| Mullite | | | $168,819 | $691,237 | $127,929 | | |
| Chamotte/dinas earths | $440,144 | $213,939 | $228,551 | $33,081 | $37,536 | $106,393 | $135,497 |
| Total | $6,581,068 | $5,824,101 | $7,371,241 | $9,168,213 | $4,795,084 | $4,698,904 | $4,411,970 |
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