|
| Commodity | 2005 | 2006 | 2007 | 2009 | 2011 |
| Furnace burners for liquid fuel | $974 | $2,050 | $2,955 | $1,248 | $781 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | | $4,072 | | $771 | $11,328 |
| Mechanical stokers (incl. their mech. grates), mech. ash dischargers & sim. ... | | | | | $380 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | | | | | $3,974 |
| Total | $974 | $6,122 | $2,955 | $2,019 | $16,463 |
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