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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $443,847 | $570,627 | $479,915 | $669,184 | $436,103 | $415,468 | $528,632 |
| Decolourising earths & fuller's earth | $6,513 | $11,804 | | | | | |
| Fire-clay | $1,702 | $10,668 | $8,218 | $10,808 | $6,011 | $6,444 | $376 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $341,923 | $136,977 | $216,627 | $233,503 | $181,851 | $183,544 | $545,666 |
| Mullite | $26,475 | $28,028 | $23,450 | $53,236 | $17,825 | $123,726 | $117,228 |
| Chamotte/dinas earths | $26,088 | $3,658 | $55,184 | $21,911 | $6,484 | $5,491 | $7,569 |
| Total | $846,548 | $761,762 | $783,394 | $988,642 | $648,274 | $734,673 | $1,199,471 |
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