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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $45,253 | $215,455 | $369,727 | $157,333 | $59,192 | $156,637 | $1,139,372 |
| Decolourising earths & fuller's earth | $531 | $484 | $1,192 | | | | |
| Fire-clay | $28,472 | $26,104 | $28,926 | $48,154 | $28,121 | $28,440 | $39,622 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $28,018 | $63,777 | $52,034 | $33,719 | $10,118 | $17,627 | $156,008 |
| Andalusite, kyanite & sillimanite | | | | $1,634 | $1,547 | $15,355 | $12,245 |
| Total | $102,274 | $305,820 | $451,879 | $240,840 | $98,978 | $218,059 | $1,347,247 |
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