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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Furnace burners for liquid fuel | $15,156 | $9,784 | $2,695,990 | $36,946 | $2,177 | $325,923 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $437,734 | $100,301 | $133,188 | $649,647 | $422,730 | $525,144 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | | $1,535 | | $7,065 | | |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $384,023 | $612,709 | $967,164 | $360,475 | $1,157,408 | $517,046 |
| Total | $836,913 | $724,329 | $3,796,342 | $1,054,133 | $1,582,315 | $1,368,113 |
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