|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $21,722 | $20,154 | $18,240 | $42,849 | $21,820 | $144,313 | $172,706 |
| Fire-clay | $457 | $5,486 | $5 | | $636 | $90,003 | |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $2,127 | $5,150 | $3,934 | $152,042 | $15,766 | $40,565 | $47,363 |
| Total | $24,306 | $30,790 | $22,179 | $194,891 | $38,222 | $274,881 | $220,069 |
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