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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $1,155,112 | $76,114 | $1,197,817 | $1,284,905 | $1,001,840 | $4,433,201 | $1,591,108 |
| Decolourising earths & fuller's earth | $4,080 | $10,777 | | $9,532 | | | |
| Fire-clay | $48,769 | $10,128 | $10,574 | $15,035 | $50,380 | $4,846 | $227 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $5,684 | $19,997 | $5,035 | $30,495 | $102,295 | $63,346 | $74,413 |
| Total | $1,213,645 | $117,016 | $1,213,426 | $1,339,967 | $1,154,515 | $4,501,393 | $1,665,748 |
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