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Q. |
Which method can be adopted if full face excavation is not possible? |
A. | back bearing method |
B. | plotting |
C. | trenching |
D. | benching |
Answer» D. benching | |
Explanation: in case of no possibility of full face excavation, top heading method is adopted for having a better output. benching process is also adopted for digging small tunnels. |
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