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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $4,049,425 | $4,477,354 | $4,566,743 | $6,120,233 | $8,590,373 | $4,887,928 | $4,990,131 |
| Decolourising earths & fuller's earth | $332,627 | | | | | | |
| Fire-clay | $520,599 | $408,187 | $1,214,716 | $515,357 | $414,605 | $438,882 | $241,898 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $944,552 | $769,844 | $1,269,683 | $764,796 | $1,301,479 | $354,778 | $239,577 |
| Andalusite, kyanite & sillimanite | | | | $756,051 | $955,252 | $1,254,076 | $1,812,885 |
| Mullite | $441,891 | $327,494 | | $405,363 | $345,524 | $182,232 | |
| Chamotte/dinas earths | $1,151,361 | $240,472 | $263,367 | $514,593 | $201,875 | $665,310 | $992,678 |
| Total | $7,440,455 | $6,223,351 | $7,314,509 | $9,076,393 | $11,809,108 | $7,783,206 | $8,277,169 |
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