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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $5,253,313 | $4,910,820 | $5,025,578 | $6,888,212 | $4,561,071 | $6,747,476 | $5,813,126 |
| Decolourising earths & fuller's earth | $20,830 | $2,342 | | | | | |
| Fire-clay | | $66,882 | $24,466 | $42,584 | $69,702 | $803 | $63,334 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $1,908,977 | $1,750,348 | $2,191,395 | $3,211,877 | $3,283,753 | $4,120,442 | $4,404,335 |
| Andalusite, kyanite & sillimanite | $491 | $13,885 | $14,162 | | | | $5,426 |
| Mullite | | $39,585 | $17,322 | | | | |
| Chamotte/dinas earths | $91 | $1,332 | $3,063 | $796 | $1,795 | $4,908 | $12,608 |
| Total | $7,183,702 | $6,785,194 | $7,275,986 | $10,143,469 | $7,916,321 | $10,873,629 | $10,298,829 |
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