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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $4,277,750 | $3,533,488 | $3,300,955 | $4,711,244 | $4,377,004 | $4,100,478 | $2,573,297 |
| Fire-clay | $17,392 | | $3,753 | $23,298 | $1,854 | $7,645 | $1,612 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $1,115,419 | $500,813 | $151,594 | $137,595 | $181,710 | $728,563 | $661,952 |
| Andalusite, kyanite & sillimanite | | | $1,376 | | | | |
| Mullite | | | $1,065 | | | | |
| Chamotte/dinas earths | | | $120 | $1,214 | $1,171 | $1,470 | $9,057 |
| Total | $5,410,561 | $4,034,301 | $3,458,863 | $4,873,351 | $4,561,739 | $4,838,156 | $3,245,918 |
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