51. In case of an open cast mine blasting, the danger zone comprises of area within the diameter of
52. Provision of SDB has been given in which of the following circular?
53. The group of holes which are detonated on the first few delays are called
54. Which gas is synonymous with 'Fire damp'?
55. In case of an O.C. mine, if the pit wall are too steep to allow suitable bends the layout of haul road geometry selected should be
56. The term 'Impeller' is mainly associated with
57. In coal seam having prominent cleavages or geological disturbances, the intake and return airways shall be as far as away which is equal to
58. Which of the following appliances is used to give suitable curvature to a track line?
59. An underground coal mine employing 1200 persons experiences 2 fatal injuries, 6 serious injuries and 8 reportable injuries during the year 2013. The total injury rate per 1000 persons employed for the year is
60. Manpower distribution plan should not show one of the following.
Identify it
Identify it
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