|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Furnace burners for liquid fuel | | | $40,966 | | | | $462 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $471 | $20,882 | $6,031 | $15,530 | $77,913 | | |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | | | | | | $2,704 | |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $1,180 | $432,450 | $887,161 | $27,960 | $29,970 | $54,261 | |
| Total | $1,651 | $453,332 | $934,158 | $43,490 | $107,883 | $56,965 | $462 |
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