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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $632,058 | $710,582 | $980,724 | $1,135,463 | $1,306,851 | $1,300,810 | $1,703,165 |
| Decolourising earths & fuller's earth | $24,216 | $180,953 | | | | | |
| Fire-clay | $315,415 | $871,373 | $622,860 | $953,530 | $104,602 | $184,859 | $497,341 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $365,037 | $440,336 | $1,186,026 | $1,120,956 | $973,796 | $936,325 | $820,082 |
| Mullite | | | | $252 | | $262 | |
| Chamotte/dinas earths | $42,951 | $65,191 | $119,726 | $100,864 | $60,438 | $75,701 | $70,314 |
| Total | $1,379,677 | $2,268,435 | $2,909,336 | $3,311,065 | $2,445,687 | $2,497,957 | $3,090,902 |
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