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Why ventilation is necessary for the mine and how much air should be sent to the mine.
   Ways to enter the underground mines and exit the mine
What if there's heavy rain in the open cast mine after the rain mine was drained. What problems do we face?
In open cast mine drill operations done in day hours or at night
What is the exposed area in depillaring panel in underground mining?
How mining is done at the national level?
Write the names of places in India where underground mining is being done
How to select opencast or underground mining?
How does Carbon mono oxide (co)gas in an underground mine?
How are air samples taken from a sealed place in an underground mine?