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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $3,131,095 | $3,465,764 | $4,305,951 | $6,539,779 | $6,616,238 | $9,592,122 | $7,250,910 |
| Decolourising earths & fuller's earth | $349,875 | $759,439 | | | | | |
| Fire-clay | $19,692 | $19,225 | $36,999 | $41,409 | $58,748 | $76,117 | $38,741 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $353,012 | $390,399 | $680,079 | $592,822 | $352,781 | $150,167 | $392,629 |
| Andalusite, kyanite & sillimanite | | | | $7,325 | | | |
| Mullite | | | | | | $4,866 | |
| Chamotte/dinas earths | $4,045 | $3,915 | $1,989 | | | | |
| Total | $3,857,719 | $4,638,742 | $5,025,018 | $7,181,335 | $7,027,767 | $9,823,272 | $7,682,280 |
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