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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $1,262,000 | $1,845,000 | $1,586,000 | $1,702,000 | $1,509,000 | $1,903,000 | $3,178,000 |
| Decolourising earths & fuller's earth | $134,000 | | | | | | |
| Fire-clay | $1,058,000 | $1,028,000 | | $834,000 | $848,000 | $847,000 | $1,101,000 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $1,637,000 | $1,487,000 | $1,984,000 | $2,068,000 | $1,894,000 | $1,794,000 | $1,257,000 |
| Andalusite, kyanite & sillimanite | $1,325,000 | $1,237,000 | $1,461,000 | $1,381,000 | $1,045,000 | $1,117,000 | $1,642,000 |
| Mullite | $1,662,000 | | | $1,995,000 | $1,211,000 | $2,310,000 | $3,753,000 |
| Chamotte/dinas earths | $2,492,000 | $2,561,000 | $2,560,000 | $1,988,000 | $1,695,000 | $1,609,000 | $1,867,000 |
| Total | $9,570,000 | $8,158,000 | $7,591,000 | $9,968,000 | $8,202,000 | $9,580,000 | $12,798,000 |
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