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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Bentonite | $40,525 | $31,580 | $57,298 | $60,428 | $46,079 | $77,558 |
| Fire-clay | | $291 | | $300 | $23,115 | $363 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $2,192 | $5,169 | $1,317 | $980 | $3,295 | $3,657 |
| Andalusite, kyanite & sillimanite | | | | $166 | | |
| Chamotte/dinas earths | $1,615 | $1,184 | $1,560 | $921 | $17,314 | $8,497 |
| Total | $44,332 | $38,224 | $60,175 | $62,795 | $89,803 | $90,075 |
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