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indian u g coal mines machine efficiency in

Jan 01, 2013·Indiahas emerged as the third largestcoalproducer in the world after China and USA with a 9% share of the total globalcoalproduction. While thecoalproduction from undergroundminingin countries like China, USA and Australia are about 95, 33 and 20% respectively,Indiaproduces only about 15% ofcoalfrom undergroundmines(Prasad 2009).

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