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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $80,674 | $97,234 | $539,819 | $576,047 | $197,721 | $330,820 | $579,414 |
| Decolourising earths & fuller's earth | $9,457 | | | | | | |
| Fire-clay | $901,148 | $998,612 | $941,214 | $407,825 | $50,951 | $461,894 | $323,628 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $2,630,945 | $4,182,820 | $7,050,773 | $9,285,589 | $8,925,369 | $14,060,285 | $13,282,608 |
| Mullite | | | $3,724 | $1,760 | $1,834 | $10,393 | $1,862 |
| Chamotte/dinas earths | $3,063 | $4,085 | $2,632 | $8,562 | $3,214 | $1,850 | $14,793 |
| Total | $3,625,287 | $5,282,751 | $8,538,162 | $10,279,783 | $9,179,089 | $14,865,242 | $14,202,305 |
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