Commodity2005200620072008200920102011
Carbides, of calcium, whether or not chemically defined$843$867$115$45,580$4,599$2,273$688
Carbides, of silicon, whether or not chemically defined    $404,568$168,414 
Carbides other than of carbon/silicon, whether or not chemically defined  $55,153   $7,852
Total$843$867$55,268$45,580$409,167$170,687$8,540