91. Method suitable for working seam under the workings of another seam with water lodged or on fire is
92. The core sizes where wire line drilling technique is adopted are for NX holes
93. Limiting pressure of compressed air is . . . . . . . .
94. In hydraulic stowing, the place where mixing cone is located is called . . . . . . . .
95. Single tube core barrel is suitable for recovering core from rocks of
96. Curb rings are made in to segments of . . . . . . . . length.
97. The device used to prevent un due swing off bucket in sinking shaft
98. The deviation is common in
99. The voltage of bulb provided in sinking shaft
100. This should be avoided, where temporary lining essential
Read More Section(Coal Mining)
Each Section contains maximum 100 MCQs question on Coal Mining. To get more questions visit other sections.