|
| Commodity | 2005 | 2006 | 2007 |
| Furnace burners for liquid fuel | $10,824 | $3,664 | |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $3,184 | $44 | |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | | $16 | |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $1,065 | $6,389 | $472 |
| Total | $15,073 | $10,113 | $472 |
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