91. Dipper shovels of smaller size upto 3.5 m3 are usually driven by . . . . . . . .
92. Triangular or wedge failure is due to
93. The application range of hydraulicking is mostly limited to . . . . . . . .
94. Good matching of load haul equipment the truck body to shovel bucket capacity ratio should be
95. Terrace cut is given with the help of
96. Some times Jack hammer mounted with
97. The machine employed for loading broken rock from a bench standing the floor of the bench is . . . . . . . .
98. Motions imparted by the wagon drill druing the time of drilling to the rods.
99. Spacing of holes in coal is (manual quarry).
100. Over burden and mineral excavated in long strips of few meters thick called as
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