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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $1,851,963 | $2,251,447 | $2,415,577 | $3,840,400 | $2,610,663 | $4,865,998 | $5,093,318 |
| Decolourising earths & fuller's earth | $404,797 | $516,819 | | | | | |
| Fire-clay | $278,622 | $186,121 | $154,938 | $90,133 | $23,806 | $44,885 | $69,916 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $848,789 | $1,072,158 | $2,214,844 | $2,416,859 | $2,999,484 | $3,537,140 | $4,076,810 |
| Andalusite, kyanite & sillimanite | $31,038 | $29,095 | $32,989 | $70,338 | $25,350 | $61,177 | $47,057 |
| Mullite | $19,116 | $2,123 | | | $2,499 | $2,768 | $268,217 |
| Chamotte/dinas earths | $8,343 | | $25,451 | $1,815 | $33,868 | $19,180 | $74,964 |
| Total | $3,442,668 | $4,057,763 | $4,843,799 | $6,419,545 | $5,695,670 | $8,531,148 | $9,630,282 |
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