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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $1,438,400 | $1,888,700 | $2,386,500 | $2,312,400 | $1,717,300 | $2,683,700 | $3,192,000 |
| Decolourising earths & fuller's earth | $18,000 | $72,700 | $84,100 | | | | |
| Fire-clay | $3,464,300 | $4,225,900 | $5,543,600 | $6,857,600 | $5,574,200 | $6,873,600 | $8,741,700 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $456,600 | $617,000 | $687,700 | $797,000 | $940,800 | $1,052,200 | $1,825,200 |
| Andalusite, kyanite & sillimanite | | $8,400 | $8,200 | | | | |
| Mullite | $23,200 | $76,000 | $1,300 | | | | |
| Chamotte/dinas earths | $199,100 | $328,600 | $315,000 | $349,100 | $183,400 | $266,100 | $151,300 |
| Total | $5,599,600 | $7,217,300 | $9,026,400 | $10,316,100 | $8,415,700 | $10,875,600 | $13,910,200 |
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