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| Commodity | 2005 | 2006 | 2007 | 2008 |
| Carbon electrodes, of a kind used for furnaces | | | $23,115 | |
| Carbon electrodes, other than of a kind used for furnaces | | | $85 | |
| Carbon brushes | $3,991 | $4,647 | | $2,524 |
| Lamp carbons, battery carbons & oth. arts. of graphite/oth. carbon, with/wi ... | | $690 | | |
| Total | $3,991 | $5,337 | $23,200 | $2,524 |
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