21. Freezing process of shaft sinking introduced by A. Loetesh B. Poetsch C. Kelvin D. Bhell Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
22. The stowing pipes in pneumatic stowing made of A. Mild steel B. High carbon steel C. Nickel D. Steel Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
23. In which line of extraction one solid stook intervenes between two stooks under extraction at a time. A. Diagonal B. Step diagonal C. Parallel to strike D. Arrow head Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
24. OMS achieved by B. G method is more than . . . . . . . . A. 2t B. 3t C. 2.8t D. 4t Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
25. Crane or grab used for clearing the debris upto a depth of . . . . . . . . A. 10m B. 20m C. 30m D. 40m Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
26. Gallery in the process of being driven A. Face B. Inset C. Heading D. Dip Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
27. The extended portionof gate roads in L/W called A. Stable B. Staple pit C. extended gate D. All Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
28. The bord and pillar method adopted of the coal scam is thicker than . . . . . . . . A. 1m B. 1.2m C. 1.5m D. 1.8m Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
29. The life of the M. S pipe used in sand stowing in lac ton of sand. A. 4 B. 6 C. 8 D. 10 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
30. Without derrick holes can be drilled depth of A. 10m B. 15m C. 25m D. 50m Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board