71. Which is the modification of dipper shovel with a long boom and used for casting fragmented rock or earth into a dump of over burden.
72. The height of bench for 20 m3 shovel is
73. The one of the strength test method is of detonator.
74. Depth of holes in coal in manual quarry.
75. This system of mining in open cast is energy efficient.
76. The formation of benches the angle of slope should not exceed.
77. In which mining we achieve, higher safety and artificial lights needed at night time.
78. Dangers and hezards are compared to less in mining.
79. The diameter of drill holes ranges from by well hole drills.
80. A dozer can dig . . . . . . . . meters below ground in earth or weathered rock.
Read More Section(Opencast Mining)
Each Section contains maximum 100 MCQs question on Opencast Mining. To get more questions visit other sections.