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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $1,312,647 | $1,533,702 | $2,224,469 | $2,818,806 | $2,010,783 | $3,301,756 | $3,867,367 |
| Decolourising earths & fuller's earth | $52,310 | $340 | | | | | |
| Fire-clay | $56,576 | $22,709 | $170,206 | $44,842 | $41,244 | $53,548 | $28,368 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $163,096 | $216,819 | $167,658 | $379,704 | $641,768 | $676,339 | $1,045,158 |
| Andalusite, kyanite & sillimanite | $29,238,912 | $34,185,882 | $42,297,595 | $44,306,870 | $40,120,230 | $56,302,820 | $56,457,268 |
| Mullite | $2 | | $256,365 | $2,870 | $892 | | $3,750,329 |
| Chamotte/dinas earths | $189,015 | $124,938 | $164,354 | $182,489 | $47,731 | $103,008 | $202,471 |
| Total | $31,012,558 | $36,084,390 | $45,280,647 | $47,735,581 | $42,862,648 | $60,437,471 | $65,350,961 |
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