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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $3,447,258 | $2,989,785 | $4,813,151 | $4,620,496 | $5,281,526 | $6,891,088 | $6,220,123 |
| Decolourising earths & fuller's earth | $212,268 | $235,254 | | | | | |
| Fire-clay | $938 | $2,615 | $3,885 | $658,440 | $106,506 | $150,580 | $132,341 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $973,281 | $2,134,559 | $1,534,009 | $1,226,646 | $1,168,695 | $2,163,501 | $1,854,720 |
| Andalusite, kyanite & sillimanite | $110,641 | $52,004 | $76,598 | $48,942 | $47,773 | $44,313 | $44,586 |
| Mullite | $185,146 | $108,853 | $206,384 | $775,531 | $33,792 | $140,040 | $56,814 |
| Chamotte/dinas earths | $2,869 | $4,326 | $27,729 | $131,540 | $144,951 | $138,771 | $69,411 |
| Total | $4,932,401 | $5,527,396 | $6,661,756 | $7,461,595 | $6,783,243 | $9,528,293 | $8,377,995 |
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