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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $174,870 | $181,445 | $340,557 | $284,662 | $161,239 | $795,568 | $776,375 |
| Decolourising earths & fuller's earth | $32,070 | $63,979 | | | | | |
| Fire-clay | $41,649 | $22,737 | $9,860 | $35,731 | $32,673 | $6,925 | $2,268 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $352,576 | $774,592 | $942,744 | $973,625 | $504,426 | $875,633 | $276,599 |
| Andalusite, kyanite & sillimanite | $4,106 | | | | | | |
| Chamotte/dinas earths | $44 | $43 | $562 | $535 | $1,102 | | |
| Total | $605,315 | $1,042,796 | $1,293,723 | $1,294,553 | $699,440 | $1,678,126 | $1,055,242 |
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