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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $763,506 | $120,934 | $61,736 | $1,032,414 | $2,262,277 | $4,773,881 | $5,454,369 |
| Decolourising earths & fuller's earth | $108,805 | $1,362 | $25,735 | | | | |
| Fire-clay | | $461 | | $3,329,279 | $1,734,685 | $368,149 | $188,480 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $80,059 | $18,562 | $33,575 | $33,251 | $220,843 | $338,758 | $1,100,730 |
| Andalusite, kyanite & sillimanite | | | | $208,862 | $34,199 | $96,560 | $223,488 |
| Chamotte/dinas earths | $7,108 | $62,513 | | $880,137 | $621,990 | $526,092 | $307,792 |
| Total | $959,478 | $203,832 | $121,046 | $5,483,943 | $4,873,994 | $6,103,440 | $7,274,859 |
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