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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $568,213 | $154,425 | $276,964 | $431,675 | $326,292 | $197,221 | $236,000 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | | $7 | $10,365 | | | $99 | $32,000 |
| Total | $568,213 | $154,432 | $287,329 | $431,675 | $326,292 | $197,320 | $268,000 |
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