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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $389,391 | $266,314 | $429,303 | $1,146,795 | $452,484 | $353,413 | $536,189 |
| Decolourising earths & fuller's earth | $52,068 | $110,504 | | | | | |
| Fire-clay | $5,389 | $27,161 | $5,133 | $967 | $6,248 | | $3,082 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $37,217 | $70,253 | $78,930 | $138,368 | $37,096 | $149,706 | $41,752 |
| Andalusite, kyanite & sillimanite | | | | $9,040 | | $54,342 | $127,207 |
| Chamotte/dinas earths | $7,759 | $1,485 | $4,772 | $4,757 | $4,532 | | |
| Total | $491,824 | $475,717 | $518,138 | $1,299,927 | $500,360 | $557,461 | $708,230 |
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