|
| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Furnace burners for liquid fuel | | $7,192 | $57,740 | | $300 | $14,855 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | | $2,125 | $354 | $690 | $2,535 | |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | $621 | $4,000 | $810 | $62 | $1,614 | $45,802 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | | | | $450 | $2,272 | $950 |
| Total | $621 | $13,317 | $58,904 | $1,202 | $6,721 | $61,607 |
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