|
| Commodity | 2010 | 2011 |
| Furnace burners for liquid fuel | $6,509 | $39,646 |
| Furnace burners other than those for liquid fuel, incl. combination burners ... | $30,844 | $14,497 |
| Parts of the furnace burners, mech. stokers & mech. ash dischargers & sim. ... | $30,889 | $5,542 |
| Total | $68,242 | $59,685 |
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