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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $6,701,027 | $9,580,737 | $7,618,210 | $16,875,928 | $14,345,043 | $9,093,051 | $3,523,215 |
| Decolourising earths & fuller's earth | $70,379 | | | | | | |
| Fire-clay | $25,822 | | | | $1,897 | | |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $124,156 | $36,126 | $24,299 | $109,342 | | | $83,102 |
| Andalusite, kyanite & sillimanite | | | | | $41,495 | | $229,042 |
| Mullite | | | | | $1,439 | | $507,953 |
| Chamotte/dinas earths | $2,370 | $10,860 | $11,792 | | | $39,591 | $1,612 |
| Total | $6,923,754 | $9,627,723 | $7,654,301 | $16,985,270 | $14,389,874 | $9,132,642 | $4,344,924 |
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