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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bentonite | $1,155,037 | $1,351,183 | $3,031,491 | $2,175,946 | $624,861 | $610,552 | $787,843 |
| Decolourising earths & fuller's earth | $51,886 | $99,856 | | | | | |
| Fire-clay | $1,540,854 | $1,065,667 | $1,601,800 | $2,692,292 | $469,774 | $244,735 | $2,467,580 |
| Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ... | $9,675,066 | $11,279,335 | $14,863,745 | $14,890,611 | $7,377,607 | $11,442,931 | $13,485,033 |
| Andalusite, kyanite & sillimanite | $1,321,935 | $1,298,261 | $2,968,768 | $1,907,187 | $2,333,305 | $2,539,249 | $3,233,874 |
| Mullite | $578,367 | $767,978 | $1,288,818 | $2,546,269 | $1,773,632 | $4,921,371 | $3,965,963 |
| Chamotte/dinas earths | $4,751,102 | $3,526,385 | $5,938,021 | $4,763,413 | $3,131,761 | $4,707,600 | $4,893,332 |
| Total | $19,074,247 | $19,388,665 | $29,692,643 | $28,975,718 | $15,710,940 | $24,466,438 | $28,833,625 |
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