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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $3,164,895 | $3,979,451 | $5,320,282 | $7,883,920 | $8,676,637 | $7,715,374 | $9,307,250 |
| Decolourising earths & fuller's earth | $186,928 | $252,723 | | | | | |
| Fire-clay | $611,656 | $1,716,307 | $2,543,046 | $2,254,928 | $1,623,828 | $1,732,383 | $1,932,031 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $97,699 | $27,872 | $18,133 | $226,590 | $884,807 | $2,258,268 | $2,512,110 |
| Andalusite, kyanite & sillimanite | $8,455 | $3,557 | $48,351 | $32,552 | $516 | | |
| Mullite | | | $2,867 | $1,913 | | $870 | $841,744 |
| Chamotte/dinas earths | $29,096 | $36,160 | $10,827 | $25,388 | $35,374 | $60,082 | $58,015 |
| Total | $4,098,729 | $6,016,070 | $7,943,506 | $10,425,291 | $11,221,162 | $11,766,977 | $14,651,150 |
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