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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $57,431 | $83,732 | $99,580 | $123,434 | $69,924 | $95,750 | $115,196 |
| Fire-clay | $1,954 | $280 | $99,974 | $8,163 | $4,401 | $8,177 | $14,032 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | | | $6,187 | $41,504 | $2,056 | $13,756 | $118,937 |
| Chamotte/dinas earths | | $508 | $1,010 | $1,328 | | | $3,807 |
| Total | $59,385 | $84,520 | $206,751 | $174,429 | $76,381 | $117,683 | $251,972 |
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