51. The drill that can drill holes 65 - 230 mm in hard rock is . . . . . . . .
52. The average output per worker in soft rock or earth is about . . . . . . . . (insitu) per day.
53. Fill factor of Hydraulic shovel.
54. Weight of jack hammer drill is . . . . . . . .
55. Designated consumers with respect of energy conservation act 2001 also includes
56. The tipping tubs having a capacity of
57. Mine plan of a mine having large open cast working shall be on a scale having representative factor of . . . . . . . . as per MMR 1961.
58. Slope failure is a failure of
59. The shovel employed for digging below the level on which it stands.
60. When 2 discontinuties strike obliquely and interacts on slope face type of slope occurs.
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