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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Furnace burners for liquid fuel | $22,014 | $4,569 | $194,217 | $5,112 | $5,087 | $43,888 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $9,830 | $14,905 | $2,627 | $52,969 | $33,524 | $37,236 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $2,953 | $1,554 | | $396 | $20 | |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $303,582 | $218,708 | $240,334 | $366,902 | $1,815,748 | $358,997 |
| Total | $338,379 | $239,736 | $437,178 | $425,379 | $1,854,379 | $440,121 |
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