What was the reason behind Kopili tragedy? VideoRegionalPratidin ExclusiveTop Stories By Pratidin Bureau Last updated Oct 11, 2019 681 Share The NEEPCO officials on Friday revealed that illegal coal mining Meghalaya was for the tragedy at NEEPCO’s 276 MW hydro-electric project at Umrangso in Assam’s Dima Hasao district. ) NEEPCOKopili 681 Share