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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $7,415,060 | $8,735,807 | $10,726,912 | $18,885,423 | $14,043,090 | $17,876,036 | $21,826,740 |
| Decolourising earths & fuller's earth | $2,583,926 | $2,146,712 | | | | | |
| Fire-clay | $1,333,221 | $1,019,547 | $2,114,928 | $1,344,970 | $1,318,503 | $2,489,742 | $1,774,053 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $17,440,968 | $22,285,053 | $24,578,440 | $29,041,122 | $19,609,210 | $24,504,151 | $29,368,065 |
| Andalusite, kyanite & sillimanite | $20,315,692 | $15,914,379 | $18,263,207 | $27,015,819 | $18,278,121 | $24,061,357 | $24,975,061 |
| Mullite | $1,363,638 | $1,317,001 | $719,767 | $1,210,595 | $325,146 | $1,877,785 | $2,062,772 |
| Chamotte/dinas earths | $6,220,710 | $2,167,517 | $2,962,239 | $3,822,061 | $1,324,121 | $808,737 | $1,002,737 |
| Total | $56,673,215 | $53,586,016 | $59,365,493 | $81,319,990 | $54,898,191 | $71,617,808 | $81,009,428 |
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