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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 |
| Bentonite | $90,488 | $722,890 | $166,097 | $931,342 | $43,002 |
| Decolourising earths & fuller's earth | $699,247 | $2,354,788 | $1,197,745 | | |
| Fire-clay | $62,416 | $11,627 | $87,371 | $83,053 | $23,460 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $1,232,252 | $293,715 | $1,146,793 | $1,071,560 | $1,388,073 |
| Andalusite, kyanite & sillimanite | $87,320 | $296,027 | $145,280 | $36,458 | $914,238 |
| Mullite | | | $5,713 | $25,710 | |
| Chamotte/dinas earths | $1,571 | | | | $12,218 |
| Total | $2,173,294 | $3,679,047 | $2,748,999 | $2,148,123 | $2,380,991 |
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