|
| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 |
| Furnace burners for liquid fuel | | $4,601 | | $2,050 | |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $15 | | | | $81 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | | | $1,587 | | $1,215 |
| Total | $15 | $4,601 | $1,587 | $2,050 | $1,296 |
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