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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $173,166 | $79,569 | $211,455 | $237,509 | $2,794,499 | $431,351 | $2,184,821 |
| Decolourising earths & fuller's earth | $60,359 | | $13,402 | $91,298 | $98,551 | | |
| Fire-clay | $4,267 | $2,100 | $37 | | $451 | $135 | |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $91,377 | $13,742 | $210,122 | $1,855,798 | $4,042,242 | $116,671 | $865,941 |
| Andalusite, kyanite & sillimanite | | | $1 | | | | |
| Mullite | | | | $52 | $2 | | |
| Chamotte/dinas earths | | | | $4,632 | $8,594 | | |
| Total | $329,169 | $95,411 | $435,017 | $2,189,289 | $6,944,339 | $548,157 | $3,050,762 |
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