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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $947,259 | $1,469,216 | $1,941,674 | $3,136,330 | $5,212,204 | $8,198,042 | $8,973,888 |
| Decolourising earths & fuller's earth | | $37 | | | | | |
| Fire-clay | | | $25,188 | $93,541 | $168,157 | $97,105 | $157,258 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $6,883,292 | $3,784,992 | $4,495,196 | $6,156,719 | $7,706,087 | $7,029,013 | $9,333,118 |
| Andalusite, kyanite & sillimanite | | | | $14,244 | $667 | $31,223 | |
| Mullite | | | | $4,787 | | $3,921 | $1 |
| Chamotte/dinas earths | $4,366 | | | | $4,798 | $216 | $5,359 |
| Total | $7,834,917 | $5,254,245 | $6,462,058 | $9,405,621 | $13,091,913 | $15,359,520 | $18,469,624 |
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