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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $1,075,923 | $1,555,081 | $1,060,615 | $849,910 | $254,978 | $547,590 | $1,007,979 |
| Decolourising earths & fuller's earth | $17,181 | $16,644 | $31,462 | $32,020 | $15,053 | $36,513 | |
| Fire-clay | $101,741,778 | $111,170,495 | $138,492,534 | $165,078,850 | $71,891,918 | $122,655,971 | $159,198,527 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $2,823,545 | $2,807,588 | $3,553,149 | $5,694,850 | $3,899,254 | $5,185,649 | $3,621,838 |
| Andalusite, kyanite & sillimanite | | $3,104 | | $160 | | | |
| Mullite | | $12,588 | $2 | | | $2,096 | |
| Chamotte/dinas earths | $200,336 | $341,421 | $289,579 | $280,300 | $401,806 | $879,454 | $278,900 |
| Total | $105,858,763 | $115,906,921 | $143,427,341 | $171,936,090 | $76,463,009 | $129,307,273 | $164,107,244 |
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