Kolkata Is The Coal Mining Industry Increasing

2019-4-4kolkata will host the sixth international mining exploration, metals and machinery exhibition at the citys eco park fromfebruary 24 to 27he mining, geological and metallurgical institute of india in collaboration with trade fair organisers, tafcon, will organise the event supported by the ministries of coal, mines, steel, power and heavy industries, tafcon said in.

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