Indeed, we are driving ourselves to a situation to make use of all forms fossil -fuel.Still underground mining in the form of SHAFT,TUNNEL,INCLINE etc. are the constant tug-of-war between man and nature.HEALTH,SAFETY AND ENVIRONMENT aspects of UG MINES are still in the hands of luck and nature's grace.We agree that all under ground mines will be open cast mines one day.Better start mine as a open cast mine ,work safely, do all the experiment on the coal bed itself with
safety precautions.This will help us especially in gassy- mines.I invite a debate on 'mining as open cast is more safe,more viable in the future rather than mining as shaft,tunnel,incline etc.'-Agree or Disagree?