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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $19,021,638 | $26,108,746 | $23,414,408 | $30,748,082 | $19,545,296 | $20,617,356 | $27,028,162 |
| Decolourising earths & fuller's earth | $915,880 | $2,587,602 | | | | | |
| Fire-clay | $283,361 | $538,527 | $488,210 | $742,767 | $801,525 | $1,034,203 | $555,221 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $24,417,795 | $25,496,829 | $30,851,381 | $31,990,739 | $19,524,363 | $25,694,992 | $35,410,362 |
| Andalusite, kyanite & sillimanite | $4,437,696 | $3,654,956 | $3,551,528 | $4,642,938 | $3,219,043 | $3,302,792 | $6,092,456 |
| Mullite | $6,959,952 | $6,240,688 | $7,936,422 | $6,621,791 | $4,320,121 | $5,709,413 | $4,446,890 |
| Chamotte/dinas earths | $4,693,657 | $4,226,773 | $6,794,046 | $6,708,912 | $8,157,781 | $16,721,360 | $5,822,678 |
| Total | $60,729,979 | $68,854,121 | $73,035,995 | $81,455,229 | $55,568,129 | $73,080,116 | $79,355,769 |
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