| 1. | Does the flue need cleaning, or should it be cleaned?
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| 2. | Creosote eats away at the masonry and can clog the flue.
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| 3. | Here are the 1998 sales figures for flue-cured tobacco.
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| 4. | In a few minutes, the draft was up the flue.
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| 5. | The aluminum flue liner failed because it was the wrong kind.
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| 6. | The decline in flue-cured tobacco intensified throughout the 1920s.
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| 7. | Clay tile flue liners are very common in the United States.
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| 8. | The flue gas is cleaned and cooled by the scrubber tower.
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| 9. | But he had not climbed up the flue to the chimney.
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| 10. | Legislation in Europe has been efficient to reduce flue gas pollution.
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