hard coal mining

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

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

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

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