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Following mining and processing activity, results a significant amount of mining wastes, in the form of sterile mineral. These wastes are stored largely in mining tailing ponds or heaps. The chemical composition of the sterile material depends from one mining site to another. For long time worldwide, tailing deposits were considered waste deposits, without the possibility of future use. A few of the negative effects on the environment my constructing and exploiting mining tailing ponds, heaps, landfills, are the d...