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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $30,250,764 | $33,251,927 | $38,878,149 | $40,881,983 | $34,342,215 | $34,675,790 | $37,123,235 |
| Decolourising earths & fuller's earth | $1,693,456 | $2,157,031 | | | | | |
| Fire-clay | $731,633 | $1,726,378 | $2,385,449 | $1,805,025 | $1,529,528 | $3,564,206 | $1,622,402 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $19,235,216 | $16,102,400 | $20,994,146 | $23,527,216 | $24,791,684 | $28,321,456 | $36,629,279 |
| Andalusite, kyanite & sillimanite | $577,343 | $1,461,458 | $1,441,151 | $1,264,255 | $1,331,051 | $1,260,528 | $1,804,679 |
| Mullite | $1,097,449 | $1,879,555 | $1,911,928 | $2,630,180 | $1,175,599 | $2,175,107 | $2,778,677 |
| Chamotte/dinas earths | $2,364,119 | $2,360,430 | $3,151,318 | $4,872,832 | $3,220,060 | $4,212,364 | $4,714,150 |
| Total | $55,949,980 | $58,939,179 | $68,762,141 | $74,981,491 | $66,390,137 | $74,209,451 | $84,672,422 |
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