Coal Minister in India?

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       Pralhad Joshi

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DifferentTypes of Mining method :-

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  Types of Mining methods:- Basically there are two types of mining method, 1)      Open cast. 2)      Underground Mining.   1)      Open cast:- The mining or extraction of ore is done at earth surface and which is open to atmosphere is called as Open cast mining method.   Open Cast mining 2)      Underground Mining:- The mining or extraction of ore is done below the earth surface or in the hill and which is not open to atmosphere are called as underground mining method. Underground mining     1)   Open Cast mining method;                      a)    Manual open cast.                       b)   Semi – Mechanized Open cast.                       c)      Fully – M...
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Advantage and disadvantage of underground (U\G) mines.

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A) Advantage of Underground (U\G) mining method.     ·        The land above u\g mines is not disturbed and only small area required at pit-top for office, workshop, winding room etc. ·        The agriculture and forest land not disturbed with u\g mining. ·        There is not much environmental problem such as air pollution, noise pollution. ·        No need to excavate over burden to reach ore body. ·        In u\g mining method does not affected on work by weather.   B)   Disadvantage of Underground (U\G) mining method.   ·        There is roof fall problem hence we require roof supporting material which are costly. ·        Additional material (stowing material) required to fill excavated area. ·        There is...
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