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Mining Engineering Coal Mining Difficulty: Medium

Mud bucket not necessary when supply of flushing water

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Which roof gives rarely warning before collapse As per the Indian Electricity Rules 1956. the maximum permissible length of a flexible cable used coal cutting machine for longwall operation in m is It is the rate at which the detonation wave passes through a column of explosive Which of the following functions of rescue station is not permitted by Chief Inspector even though the owner is allowed to establish a rescue room for group of mines having total number of persons ordinarily employed is in excess of 5000? A vertical method similar to stope and pillar mining in the supported class is known as . . . . . . . .