Commodity2005200620072008
Bentonite  $181$1,677
Fire-clay$303 $634 
Clays other than expanded clays of 68.06 (excl. of 2507.00 & 2508.10-2508.3 ...$1,750$1,756$4,451$2,230
Total$2,053$1,756$5,266$3,907