Largest #Coal Producer of the World Operated their #CoalMines in #NorthEasternCoalfields since 1981 to 2008. Also worked in the #mines of Western Coalfields Ltd., Mahanadi Coalfields Ltd., Northern Coalfield Ltd, #BharatCokingCoal Ltd. See more @ http://goo.gl/Oj4ymP #SML #SaumyaMining #AshokJain #SaumyaMiningLimited