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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $227,444 | $280,560 | $374,916 | $414,839 | $470,610 | $212,850 | $438,471 |
| Fire-clay | $827 | | | | $216,000 | $100 | $3,018 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $15,529 | $8,612 | $524,266 | $4,451,057 | $810,675 | $252,945 | $527,462 |
| Mullite | $12,075 | | | | | $20 | |
| Chamotte/dinas earths | | | $1 | $351 | | $100 | |
| Total | $255,875 | $289,172 | $899,183 | $4,866,247 | $1,497,285 | $466,015 | $968,951 |
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