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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $2,925,511 | $3,114,326 | $6,018,082 | $5,529,951 | $4,486,287 | $3,601,099 | $13,680,646 |
| Decolourising earths & fuller's earth | $213,765 | $265,639 | | | | | |
| Fire-clay | $760,252 | $1,524,182 | $2,225,727 | $1,903,762 | $1,497,174 | $1,999,656 | $2,671,715 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $1,927,846 | $1,556,532 | $2,098,306 | $1,962,746 | $1,114,823 | $1,174,183 | $1,761,947 |
| Andalusite, kyanite & sillimanite | $1,086,371 | $1,947,293 | $2,042,041 | $2,897,040 | $2,328,908 | $1,971,854 | $2,561,576 |
| Mullite | $589,005 | $706,680 | $895,490 | $1,119,427 | $752,176 | $890,760 | $1,515,557 |
| Chamotte/dinas earths | $544,880 | $509,768 | $655,160 | $739,233 | $740,287 | $1,257,421 | $1,988,623 |
| Total | $8,047,630 | $9,624,420 | $13,934,806 | $14,152,159 | $10,919,655 | $10,894,973 | $24,180,064 |
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