41. Face along the strike prefarable for stowing in seams dipping more than.
42. The water garland segments provided with outlet hole into which screwed a nipple for . . . . . . . . mm diameter drain pipe
43. For retreating L/W and B. P workings, only suitable method of methane drainage is
44. No. of drills employed in shaft sinking
45. In India coal seams over . . . . . . . . m thick are considered as thick seams.
46. Top most horizon of tertiary succession in Assam is known as
47. How many coal seams belong to Barakar formation
48. Drill rods made of
49. The width of the rooms in room and pillar method may be
50. The tunneling machine employed in hard rock should be
Read More Section(Coal Mining)
Each Section contains maximum 100 MCQs question on Coal Mining. To get more questions visit other sections.