Szukana fraza: [Abstract = "At present, brown coal is only being mined at the Sieniawa deposit \(by the surface method\), where approx. 40 thousand Mg per year is mined. In the German part of the Middle Odra Region, in turn, there is approx. 13.1 billion Mg of brown coal. It is being mined in several opencast mines\: Jänschwalde, Cottbus\-Nord, Welzow\-Süd \(Brandenburg\) and Nochten \(Saxony\), and in the nearest future five other mines are going to be opened."]

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