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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $429,003 | $725,475 | $986,054 | $2,246,944 | $3,065,447 | $3,877,797 | $2,926,068 |
| Decolourising earths & fuller's earth | $6,932 | $56,193 | $241,296 | $137,548 | | | |
| Fire-clay | | | $15,109 | $2,841 | $12,716 | $5,676 | $5,517 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $3,230,400 | $3,343,974 | $2,253,186 | $4,115,803 | $3,220,698 | $6,802,044 | $8,523,469 |
| Andalusite, kyanite & sillimanite | | $31,559 | | | $15,794 | | $29,129 |
| Chamotte/dinas earths | | | $9,807 | | | $28,601 | $12,998 |
| Total | $3,666,335 | $4,157,201 | $3,505,452 | $6,503,136 | $6,314,655 | $10,714,118 | $11,497,181 |
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