|
| Commodity | 2006 | 2007 | 2008 |
| Carbides, of calcium, whether or not chemically defined | $11,649 | $63,094 | $2,349 |
| Carbides, of silicon, whether or not chemically defined | $39,945 | | $4,958 |
| Carbides other than of carbon/silicon, whether or not chemically defined | | $32,128 | |
| Total | $51,594 | $95,222 | $7,307 |
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