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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Bentonite | $684,170 | $1,255,469 | $776,070 | $1,837,212 | $1,419,756 | $1,548,156 |
| Decolourising earths & fuller's earth | $194,603 | $67,053 | $258,069 | $183,975 | $379,298 | $400,119 |
| Fire-clay | $1,323,292 | $1,600,718 | $1,108,737 | $1,771,042 | $1,868,521 | $2,123,395 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $257,988 | $1,764,822 | $3,297,587 | $807,552 | $532,869 | $387,717 |
| Andalusite, kyanite & sillimanite | | $5,009 | | | $50 | $136,200 |
| Mullite | $18,678 | | $199,023 | $164,370 | $970,166 | |
| Chamotte/dinas earths | $1,850,506 | $1,983,841 | $2,586,340 | $3,002,949 | $1,877,075 | $1,678,513 |
| Total | $4,329,237 | $6,676,912 | $8,225,826 | $7,767,100 | $7,047,735 | $6,274,100 |
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