12th Class Geography Solved Paper - Geography 2017 Outside Delhi Set-III

  • question_answer
    Describe any three features of open-cast mining.


    Features of open - cast mining are:
    (i) This is the cheapest and easiest method of mining and is used for mining those minerals which occur close to the surface.
    (ii) The overhead cost such as safety precautions and equipment?s is relatively low.
    (iii) The output is both large and rapid.

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