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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $13,502,734 | $19,650,181 | $26,036,213 | $24,112,775 | $22,218,275 | $28,478,692 | $33,449,704 |
| Decolourising earths & fuller's earth | $19,691 | $29,346 | | | | | |
| Fire-clay | $96,444 | $144,691 | $98,384 | $95,602 | $104,321 | $183,513 | $154,327 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $5,971,508 | $6,619,530 | $6,001,143 | $4,489,441 | $3,854,083 | $2,910,464 | $3,695,992 |
| Andalusite, kyanite & sillimanite | $1,668,084 | $1,958,836 | $2,658,007 | $2,436,694 | $1,141,077 | $2,289,109 | $2,680,145 |
| Mullite | $8,841 | | | | | $7,513 | |
| Chamotte/dinas earths | $3,115,150 | $3,011,619 | $4,374,464 | $5,958,263 | $2,760,293 | $4,371,470 | $6,109,726 |
| Total | $24,382,452 | $31,414,203 | $39,168,211 | $37,092,775 | $30,078,049 | $38,240,761 | $46,089,894 |
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