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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $4,730,341 | $5,035,625 | $5,919,383 | $8,651,971 | $4,836,247 | $7,374,364 | $8,971,461 |
| Decolourising earths & fuller's earth | $114,574 | $93,712 | | | | | |
| Fire-clay | $88,743 | $68,389 | $99,784 | $107,768 | $62,368 | $272,646 | $235,390 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $1,939,064 | $508,411 | $677,846 | $718,156 | $1,320,555 | $1,459,330 | $1,327,056 |
| Andalusite, kyanite & sillimanite | $62,397 | $73,907 | $91,231 | $315,476 | $355,686 | $260,508 | $342,213 |
| Mullite | $14,878 | $22,819 | $76,907 | $71,930 | $69,838 | $48,125 | $82,497 |
| Chamotte/dinas earths | $1,085,887 | $910,895 | $1,679,113 | $1,996,594 | $1,366,514 | $1,321,778 | $1,415,645 |
| Total | $8,035,884 | $6,713,758 | $8,544,264 | $11,861,895 | $8,011,208 | $10,736,751 | $12,374,262 |
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