Drifters can be used to drill Options: A . &nbspOnly up holes B . &nbspOnly down holes C . &nbspHorizontal or up holes D . &nbspHorizontal down or up holes

Drifters can be used to drill

Question

Drifters can be used to drill

Options:

A . Only up holes

B . Only down holes

C . Horizontal or up holes

D . Horizontal down or up holes

Answer: Option D

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Question 1. The tunnels, the artificial underground passages are constructed for:....

Question 2. Which one of the following statements is not correct in respect of setting of an inclined tunnel?....

Question 3. Which one of the following methods is generally used for the layout of the muck-car tracks?....

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Question 6. The most commonly adopted pattern of cut holes is:....

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Question 8. To attain the required shape of the tunnel section, we use:....

Question 9. For full face method, the excavation to be done is generally divided into....

Question 10. The most suitable soil for compressed air tunnelling is....

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