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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $3,608,415 | $3,581,084 | $4,209,410 | $6,394,333 | $5,276,857 | $6,453,478 | $8,600,366 |
| Decolourising earths & fuller's earth | $569,738 | $556,346 | | | | | |
| Fire-clay | $16,207 | $49,640 | $35,195 | $2,522 | | $48,123 | $43,861 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $1,113,865 | $1,061,596 | $2,003,011 | $1,921,503 | $1,643,524 | $1,871,055 | $3,262,937 |
| Andalusite, kyanite & sillimanite | $1,162,128 | $1,196,800 | $1,321,070 | $2,384,494 | $867,937 | $1,308,532 | $1,100,094 |
| Mullite | $993,563 | $863,129 | $2,630,653 | $3,302,626 | $1,764,941 | $2,917,505 | $2,952,084 |
| Chamotte/dinas earths | $1,231,207 | $797,555 | $815,996 | $1,299,572 | $384,565 | $367,452 | $337,226 |
| Total | $8,695,123 | $8,106,150 | $11,015,335 | $15,305,050 | $9,937,824 | $12,966,145 | $16,296,568 |
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