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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $991,199 | $964,432 | $1,373,324 | $1,379,838 | $1,099,280 | $1,263,015 | $1,248,657 |
| Decolourising earths & fuller's earth | $1,157,089 | $1,249,578 | | | | | |
| Fire-clay | $51,938 | $29,772 | $52,418 | $62,267 | $21,256 | $19,708 | $25,561 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $466,553 | $316,560 | $1,731,066 | $1,708,861 | $1,209,550 | $1,554,884 | $1,303,955 |
| Andalusite, kyanite & sillimanite | $77,433 | | $46,280 | $55,622 | $2,506 | $73,072 | $24,398 |
| Mullite | $20,656 | $5,706 | $22,600 | $10,933 | | $2,947 | $21,381 |
| Chamotte/dinas earths | $167,313 | $121,675 | $238,457 | $98,543 | $6,471 | $113,526 | $55,793 |
| Total | $2,932,181 | $2,687,723 | $3,464,145 | $3,316,064 | $2,339,063 | $3,027,152 | $2,679,745 |
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