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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $94,546 | $83,300 | $132,202 | $277,914 | $290,584 | $292,912 | $442,696 |
| Decolourising earths & fuller's earth | $3,934 | $1,032 | | | | | |
| Fire-clay | $71,402 | $31,226 | $15,428 | $51,901 | $4,843 | $10,157 | $7,113 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $170,530 | $188,912 | $154,120 | $144,251 | $272,499 | $464,676 | $490,723 |
| Mullite | $20,528 | $11,826 | $13,856 | $18,301 | | $21,243 | $5,162 |
| Chamotte/dinas earths | $4,426 | $6,450 | $11,284 | $6,457 | $5,693 | $7,329 | $2,836 |
| Total | $365,366 | $322,746 | $326,890 | $498,824 | $573,619 | $796,317 | $948,530 |
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