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Discussion :: Tunneling

  1. The following operations are required for tunnelling in rocky terrain :
    1. Removing the foul gases
    2. Marking the tunnel profile
    3. Setting up and drilling
    4. Checking misfire
    5. Mucking
    The correct sequence is :

    2. A.
    1 2 3 4 5
    B.
    2 3 5 4 1
    C.
    4 2 1 3 5
    D.
    2 3 1 4 5

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    Workspace

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    Answer : Option D

    Explanation :

    No answer description available for this question.

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