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In a common understanding, tailings dumps are represented as categories of engineering constructions where mined underground rocks are stored together with the useful rock represented by underground coal. And the position of tailings dumps, ordinarily, is on the land around the mining operations. For their location, land is chosen that determines the minimum impact on the environment and requires some of the lowest waste disposal costs. Considering that our world is in a continuous ascension, new techniques and me...

The Cri?ul-Alb River springs from the Apuseni mountains, and its course crosses many rural and urban towns. In the Cri?ul Alb hollow, there are several tributaries that have a significant contribution to the volume and water flow of the Cri?ul Alb River. Due to the abundant precipitation combined with the melting of the snow during the spring period, high levels of water flow are created, endangering human settlements and other goods isolated by their flooding. The aim of the paper was to present a topographic stu...