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Discussion :: UPSC Civil Service Exam Questions

  1. Which one of the following methods is generally considered the best for tunnel ventilation ?

  2. A.
    Driving a drift through the tunnel
    B.
    'Blow in' method
    C.
    'Blow out' method
    D.
    Combination of 'Blow in' and 'Blow out' methods

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    Workspace

    Answer : Option D

    Explanation :

    No answer description available for this question. Let us discuss.


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