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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $1,179,592 | $1,811,020 | $1,795,925 | $758,908 | $1,116,819 | $1,439,406 | $659,809 |
| Decolourising earths & fuller's earth | $14,161 | $31,199 | | | | | |
| Fire-clay | $328,979 | $290,334 | $393,098 | $492,788 | $783,254 | $2,831,580 | $5,819,930 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $248,208 | $307,084 | $407,859 | $425,745 | $387,587 | $490,724 | $604,771 |
| Andalusite, kyanite & sillimanite | | $12,793 | | $62,700 | $3,777 | | $21,784 |
| Mullite | $14,112 | $52,412 | $23,990 | $46,799 | $38,691 | $28,058 | $51,757 |
| Chamotte/dinas earths | $520,680 | $622,902 | $545,301 | $989,710 | $992,459 | $579,264 | $1,253,355 |
| Total | $2,305,732 | $3,127,744 | $3,166,173 | $2,776,650 | $3,322,587 | $5,369,032 | $8,411,406 |
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