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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $1,746,959 | $527,476 | $523,995 | $926,712 | $621,124 | $770,810 | $615,594 |
| Decolourising earths & fuller's earth | | $2,515 | | | | | |
| Fire-clay | $7,671 | $873 | $6,030 | | $2,092 | $7,314 | $8,324 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $106,107 | $353,186 | $14,189 | $30,821 | $14,924 | $1,572 | $38,118 |
| Total | $1,860,737 | $884,050 | $544,214 | $957,533 | $638,140 | $779,696 | $662,036 |
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