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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Bentonite | $666,877 | $955,177 | $725,979 | $2,024,409 | $1,774,376 |
| Decolourising earths & fuller's earth | $27,038 | $42,999 | $4,700 | | |
| Fire-clay | $1,145,133 | $2,194,474 | $601,506 | $2,119,726 | $974,129 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $85,490 | $43,303 | $9,700 | $16,641 | $280,282 |
| Andalusite, kyanite & sillimanite | | $47,223 | $34,184 | | |
| Mullite | | | $2,392 | | |
| Chamotte/dinas earths | $13,120 | $8,604 | $163,837 | $4,763 | $1,072,880 |
| Total | $1,937,658 | $3,291,780 | $1,542,298 | $4,165,539 | $4,101,667 |
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