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The difficulty in reclamation of the North Bohemian Basin dumps consists in extremely severe properties of rocks in most of the dumps. It mainly concerns the rocks of the overlaying formation and the formation of brown coal seams. Sands, kaolinitic clayey sands and kaolinitic and illitic clays are the main materials bulk to the dumps. The admixtures of the bulk rocks consist of organic coal, siderite and pyrite. These rocks are mechanically unstable against wind and water erosion and they have obtained adverse, ac...

The state of Sarawak, situated on northern part of the Borneo Island, is the part of Malaysia Federation. Main raw materials usable for the Sarawak economy are oil, wood, and natural gas. Nowadays the importance of brown coal as a raw material is caused by the growing needs of power in the Sarawak. It is the reason of working trip of authors of this article to the area of Merit Pila. They worked there as Deputy Mine Managers in 2006 and 2007. Merit Pila is great coal basin situated in central Sarawak. The paper br...