Which one of the following statements is not correct for heading and benching method of tunnelling?

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Question:
Which one of the following statements is not correct for heading and benching method of tunnelling?

1. removal of muck from the heading is very easy

2.drilling and mucking can be done simultaneously

3. benching provides a plateform for working on heading

4.None of these

Posted Date:-2022-09-25 03:24:58

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