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Which of the following would NOT be found in a grain cleaning line?

  • A.A scalping screen
  • B.An aspirator
  • C.A destoner
  • D.A roller mill

Answer: D

Correct answer: A roller mill

A roller mill grinds; it belongs to the milling process that follows cleaning, not to the cleaning line itself. The other three are all cleaning machines and all standard: a scalping screen for oversize trash, an aspirator for light material, and a destoner for dense foreign matter that nothing else will remove.

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