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51
In case of an open cast mine blasting, the danger zone comprises of area within the diameter of
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Answer: Option C
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52
Provision of SDB has been given in which of the following circular?
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Answer: Option D
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53
The group of holes which are detonated on the first few delays are called
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Answer: Option C
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54
Which gas is synonymous with 'Fire damp'?
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Answer: Option B
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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
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Answer: Option B
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56
The term 'Impeller' is mainly associated with
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Answer: Option C
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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
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Answer: Option B
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58
Which of the following appliances is used to give suitable curvature to a track line?
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Answer: Option B
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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
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Answer: Option A
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60
Manpower distribution plan should not show one of the following.
Identify it
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Answer: Option C
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