71. A roadway driven along strike of seam.
72. If after charging a shot-hole inftammable gas is found in any place within . . . . . . . . radius no shot hole shall be fired until the place is cleared of gas. Fill up the blanks.
73. A second barrier (heavy type) should be placed further outbye at . . . . . . . .m from the face.
74. The reviving apparatus usually the rate of flow ranging from . . . . . . . . lits/mins according to the rate and depth of patient's breathing.
75. Surface temperature influence on natural ventilation will be less or negligible in which situation.
76. The gradient line is marked on the side by red lead . . . . . . . . of drift.
77. Gelling agent in slurry explosive is
78. Generally inclines touch a coal seam at a vertical depth of . . . . . . . . meters in singareni group of mines:
79. It is required in all inclined mouth, the safety contravence is . . . . . . . .
80. Which of the following is treated as base explosive?
Read More Section(Drilling and Blasting)
Each Section contains maximum 100 MCQs question on Drilling and Blasting. To get more questions visit other sections.
- Drilling and Blasting - Section 1
- Drilling and Blasting - Section 2
- Drilling and Blasting - Section 3
- Drilling and Blasting - Section 4
- Drilling and Blasting - Section 5
- Drilling and Blasting - Section 6
- Drilling and Blasting - Section 8
- Drilling and Blasting - Section 9
- Drilling and Blasting - Section 10