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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $20,015,345 | $26,075,017 | $33,192,060 | $41,423,702 | $29,031,918 | $33,728,010 | $29,508,217 |
| Decolourising earths & fuller's earth | $1,797,868 | $1,155,085 | | | | | |
| Fire-clay | $122,239,862 | $93,575,182 | $114,116,268 | $288,732,213 | $142,348,828 | $291,779,414 | $208,264,349 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $914,220 | $2,394,966 | $4,150,339 | $9,559,087 | $8,093,785 | $9,751,676 | $13,233,430 |
| Andalusite, kyanite & sillimanite | $785,142 | $813,120 | $461,907 | $537,504 | $72,142 | $424,950 | $289,219 |
| Mullite | $3,293,924 | $3,591,262 | $5,694,866 | $10,963,065 | $10,141,460 | $23,261,888 | $26,195,491 |
| Chamotte/dinas earths | $1,012,216 | $228,078 | $469,231 | $1,618,013 | $195,980 | $846,846 | $2,255,807 |
| Total | $150,058,577 | $127,832,710 | $158,084,671 | $352,833,584 | $189,884,113 | $359,792,784 | $279,746,513 |
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