Latest Technology and Performances in the Global Underground ...

egcfe.ewg.apec.org

Latest Technology and Performances in the Global Underground ...

Global Hard Coal Production6000million tonnes50004000300020002796463149731786318764%100001981 2004 2005UndergroundSurfaceSource: World Coal Institute. Coal Facts 2006Property of Joy Mining Machinery - Confidentialw w w . j o y . c o m

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