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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $822,623 | $1,164,814 | $1,189,615 | $1,048,609 | $908,389 | $907,190 | $961,069 |
| Decolourising earths & fuller's earth | $14,699 | $24,544 | | | | | |
| Fire-clay | $214,667 | $180,833 | $151,463 | $75,222 | $2,588 | $4,339 | $11,123 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $573,791 | $2,267,276 | $1,156,913 | $6,877,006 | $6,002,564 | $4,158,253 | $4,259,447 |
| Andalusite, kyanite & sillimanite | | $544 | $7,173 | $41,803 | $2,580 | $6,523 | $160,046 |
| Mullite | $483 | | | | | | |
| Chamotte/dinas earths | $143 | $952 | | | | $432 | |
| Total | $1,626,406 | $3,638,963 | $2,505,164 | $8,042,640 | $6,916,121 | $5,076,737 | $5,391,685 |
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