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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Bentonite | $755,555 | $693,618 | $1,061,529 | $1,646,396 | $750,547 | $1,813,411 |
| Decolourising earths & fuller's earth | $11,235 | $10,252 | | | | |
| Fire-clay | | | $12,434 | $20,341 | $14,385 | |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $1,852,515 | $2,806,439 | $4,787,477 | $5,053,685 | $896,617 | $1,191,768 |
| Andalusite, kyanite & sillimanite | | | | | $32,767 | $18,070 |
| Chamotte/dinas earths | | $9,516 | $3,841 | | $24,947 | $263 |
| Total | $2,619,305 | $3,519,825 | $5,865,281 | $6,720,422 | $1,719,263 | $3,023,512 |
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