Mining Engineering > GATE 2018 > Underground Coal Mining
An SDL of 1.0 tonne capacity operates with a cycle time of 6 minutes. The dimension of the face is 4 1 m×3 m. Five blasts are conducted per shift with an average pull of 1.2 m. If the density of blasted coal is 0.8 tonne/m3, the time required by the SDL in the shift to lift all the prepared coal in hours is __________.
Correct : 5.6
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