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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 |
| Bentonite | $1,114,504 | $1,216,688 | $2,038,210 | $3,009,453 | $2,990,234 |
| Decolourising earths & fuller's earth | $7,848 | $51,323 | $39,421 | | |
| Fire-clay | $148,409 | $222,497 | $371,752 | $461,965 | $483,145 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $125,395 | $587,242 | $207,829 | $259,594 | $124,721 |
| Andalusite, kyanite & sillimanite | $1,227,750 | | | | |
| Mullite | $343,972 | $326,827 | $141,335 | $50,013 | $882 |
| Chamotte/dinas earths | $2,351,133 | $510,739 | $323,176 | $432,570 | $269,987 |
| Total | $5,319,011 | $2,915,316 | $3,121,723 | $4,213,595 | $3,868,969 |
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