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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $23,593 | $304,941 | $64,934 | $45,340 | $386,691 | $623,239 | $93,506 |
| Decolourising earths & fuller's earth | $1,766 | $63,542 | | | | | |
| Fire-clay | $27,690 | $34,612 | $18,767 | $20,877 | $36,996 | $32,613 | $32,784 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $10,794 | $5,657 | $254,456 | $4,674 | $440,412 | $4,182 | $474,021 |
| Mullite | | | $1,398 | | | | |
| Chamotte/dinas earths | $1,311 | | $11,920 | $12,113 | $2,474 | | |
| Total | $65,154 | $408,752 | $351,475 | $83,004 | $866,573 | $660,034 | $600,311 |
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