41. For testing a specimen in laboratory the length and diameter ratio should be
42. Depression of Ground surface called
43. In resin capsule the mixture hardens within . . . . . . . . seconds and become solid.
44. The guide rail of Alimak raise climber is fixed on the wall by
45. The roof in coal mines tested by
46. As the bit gauge decreases.
47. In the tapered prop, length of tapeing at one end is . . . . . . . .
48. Fibre glass rock bolts have gained wide popularly in . . . . . . . . mining.
49. The roof is easily cavable, if the protodyakov index is . . . . . . . .
50. A base lifting device for some of the shield support is required in longwall face; when
Read More Section(Mine Supports and Strata Control)
Each Section contains maximum 100 MCQs question on Mine Supports and Strata Control. To get more questions visit other sections.