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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Bentonite | $93,696 | $169,311 | $78,081 | $42,827 | | $37,300 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | | | | | $803,082 | $249,101 |
| Chamotte/dinas earths | | | | | | $1,040 |
| Total | $93,696 | $169,311 | $78,081 | $42,827 | $803,082 | $287,441 |
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