Professor PGR.Dharmratna,".Stope Productivity Improvement through Application of Cut-and-Fill Mining Method Variant at Bogala Graphite Mines.",ERE Annual conference,,2016
Prof.P.G.R.Dharmaratne, P.I.Kumarage,".Use of Dynamites, Water-Gels and Emulsion Explosives in Lankan Quarrying/Mining Practice.",IESL- Journal,Vol.XLVII,2015
