|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Furnace burners for liquid fuel | $2,389 | | $33,036 | $508 | $341 | $16,894 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $67,468 | $59,193 | $36,155 | $17,739 | | $12,705 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | | | | | $68,299 | |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $986 | | $416 | $15,046 | | |
| Total | $70,843 | $59,193 | $69,607 | $33,293 | $68,640 | $29,599 |
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