Q161
Open questionThe machine which cuts the coal while travelling in one direction and loads on return travel.
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Mining Engineering · all questionsCoal Mining
Coal Mining
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Q162
Open questionThe method of boring the holes drilled by milling action
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Q163
Open questionThe . . . . . . . . type of explosives used for blasting in shaft sinking
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Q164
Open questionThe latest technologies employed in shaft sinking machines suitable of diameters a shaft of excavated diameter by drill shafts are
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Q165
Open questionThe number of pillars in a panel varies from
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Q166
Open questionThe driving drum rotates at . . . . . . . . giving a thrower belt velocity of . . . . . . . .
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Q167
Open questionHydrogenation first achieved by the scientist
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Q168
Open questionNo such working shall exceed . . . . . . . . in width a height near water logged area.
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Q169
Open questionIn depillaring by caving, the type of splitting preferred is
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Q170
Open questionMinimum factor of safety in design of pillar in bord and pillar mining.
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Q171
Open questionDouble tube core barrel is suitable for rocks of
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Q172
Open questionHydrogenation invented in the year
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Q173
Open questionDuring development the height of the gallery should not exceed
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Q174
Open questionThe strata through which shaft has to be sunk may be divided into . . . . . . . . groups.
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Q175
Open questionLongwall advancing stables are usually . . . . . . . . ahead of the face.
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Q176
Open questionThe undue swinging of the bucket during its travel can be prevented by means of
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Q177
Open questionBest method of mining in seam of 8.5 m thick.
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Q178
Open questionRoof is easily cavable if proto dyakor index is
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Q179
Open questionPermanent lining generally not required where the shaft are
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Q180
Open questionThe gallaries driven through the pillar for forming stooks called . . . . . . . .
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