hard coal mining

Changes in coal density of at-forehead seam zone before or during gas and rock outburst

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Wybrane aspekty zmian restrukturyzacyjnych w polskim górnictwie węgla kamiennego (w latach 1990-2008)

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The analysis of fatal accidences occurrence in hard coal mines between 2002 and 2010

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Changes of the filtration coefficient of mining exploitation wastes of different ages in the solid of the "Bogdanka" dump in the light of model and in situ investigations

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