|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $3,070 | $1,665 | $2,512 | $1,831 | $35 | $1,888 | $1,322 |
| Fire-clay | | | $1 | $22 | | | $50 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $410 | $48 | $707 | $25 | $3,622 | $27,441 | $28,180 |
| Chamotte/dinas earths | | | | $10 | $4 | $7 | $1 |
| Total | $3,480 | $1,713 | $3,220 | $1,888 | $3,661 | $29,336 | $29,553 |
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