Dharmaratne, P.G.R.2020-11-302020-11-301994Engineer, 22(1):p.19-28https://dl-iesl.nsf.gov.lk/handle/1/2577Engineering and TechnologyTraditional methodsMechanizationEnvironmental impactMining and mineral engineeringGem miningMechanised gem mining in Sri Lanka and its effect on environmentArticle