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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $31,511,792 | $34,456,210 | $34,340,032 | $49,107,417 | $20,565,035 | $37,590,026 | $42,952,236 |
| Decolourising earths & fuller's earth | $2,649,498 | $2,702,734 | | | | | |
| Fire-clay | $655,180 | $859,048 | $1,501,703 | $3,170,666 | $867,806 | $1,963,424 | $1,000,807 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $16,341,073 | $17,165,615 | $26,703,326 | $50,019,197 | $19,754,648 | $29,501,322 | $30,643,952 |
| Andalusite, kyanite & sillimanite | $4,895,131 | $5,187,890 | $6,033,238 | $5,968,770 | $4,672,323 | $7,810,156 | $7,161,159 |
| Mullite | $4,115,000 | $4,286,623 | $5,363,094 | $9,045,127 | $4,992,082 | $10,067,217 | $9,963,659 |
| Chamotte/dinas earths | $2,047,844 | $2,060,060 | $1,910,991 | $2,863,411 | $1,670,851 | $1,244,670 | $1,897,628 |
| Total | $62,215,518 | $66,718,180 | $75,852,384 | $120,174,588 | $52,522,745 | $88,176,815 | $93,619,441 |
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