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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $611,172 | $686,461 | $1,089,796 | $3,541,789 | $2,064,604 | $1,360,941 | $1,899,371 |
| Decolourising earths & fuller's earth | $72,661 | $143,030 | | | | | |
| Fire-clay | $337,877 | $389,516 | $426,336 | $534,253 | $403,560 | $419,553 | $426,838 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $1,670,829 | $2,188,041 | $2,985,069 | $1,010,331 | $889,580 | $900,547 | $1,070,876 |
| Andalusite, kyanite & sillimanite | | | | | | $378 | $171 |
| Mullite | $12,207 | $9,123 | $10,904 | $12,824 | $11,601 | $6,600 | $2,114 |
| Chamotte/dinas earths | $235,000 | $352,028 | $400,547 | $338,443 | $458,567 | $464,110 | $551,862 |
| Total | $2,939,746 | $3,768,199 | $4,912,652 | $5,437,640 | $3,827,912 | $3,152,129 | $3,951,232 |
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