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The "Drmno" coal strip mine is one of the most important factors of the electro-power system of Serbia. The coal exploitation has taken place over 20 years (since 987), with the exploitation of 6В·106 tons in 2007. The coal exploitation is complicated by the waterbearing character of the roof sediments, which is the consequence of the vicinity of the rivers Danube and Mlava. Groundwater protection is performed using the wells distributed in several lines (about 200 wells). Current solutions were formed either with...