TY - JOUR N2 - Methane is accompanied by most of the coal deposits. The methane hazard is excessive content of this gas in the mining excavations. This is a source of high risk security and continuity of the mine. The Piast–Ziemowit is the only non-methane mine in the Polish Mining Group. In 2015, 66,4% of the coal mined in Kompania Węglowa S.A. mines comes from methane coal seams. Methane drainage is the most effective but very costly method of combating methane hazard.The costs of prevention and eradication of methane hazard is charged to the costs of coal mining. Therefore, performance of methane drainage in the mines of the Polish Mining Group is adapted to the scale of the methane hazard. The article presents an analysis of the costs of prevention of methane hazard for mines with different absolute methane and its impact on the level of these costs. L1 - http://www.journals.pan.pl/Content/109827/PDF-MASTER/potoczek-i-inni.pdf L2 - http://www.journals.pan.pl/Content/109827 PY - 2017 IS - Nr 99 EP - 158 KW - methane KW - methane hazard KW - the costs of prevention of methane A1 - Potoczek, Halina A1 - Bojarski, Piotr A1 - Kloc, Leszek PB - Instytut Gospodarki Surowcami Mineralnymi Polskiej Akademii Nauk CY - More info at Journal site: https://min-pan.krakow.pl/wydawnictwo/czasopisma/zeszyty-naukowe-instytutu-surowcami-mineralnymi-i-energia-pan/ https://min-pan.krakow.pl/wydawnictwo/wp-content/uploads/sites/4/2018/02/Wskazowki-ZN-ang-2018.pdf DA - 2017 T1 - Methane hazard and a study of its prevention costs in 2012–2015 on the example of selected mines SP - 143 UR - http://www.journals.pan.pl/dlibra/publication/edition/109827 T2 - Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi Polskiej Akademii Nauk ER -