El medio ambiente en la minería

113 PER G. BROMAN in Sweden for processing sulphidic hase and precious metal raw materials.The first of the smelter plants was huilt and placed in operation around 19300n an Figu.re 1: Location map island at the moutb of the Skellefte River. The location was chosen, among other considerations, with regard to its impact on the surroundings. InitialIy sulphur dioxide and metal emissions were large. Production efficiencywas the overriding consideration in the design and constructíon of the plants, in accordance with the prevailing outlook and standard of technology at that time. Gradually, a growing environmental concernbegan to emerge. Figure 2 depicts tbe work up till now. The figure illustrates botb tbe trend in sulphur dioxide emissions and copper production since the 8tart up of operations.