Due to the depth of mining in Polish coal mines some co-existing hazards, such as methane, rock burst or spontaneous fires ones, occur. Systems preventing from natural hazards must ensure the safety of conducted mining work. This paper presents mining regulations concerning using automatic methanometry, which must be observed in Poland. The main principles of building in gas sensors as well as air thermodynamic parameters in mining areas and development headings are presented. The principles are presented on the basis of monitoring examples and controlling methane and fire hazards in driven headings and longwalls ventilated by means of U and Y ventilation systems. Special emphasis is given to extra prevention measures in roadways and in a methane drainage system, which are not required by regulations, but which are taken in mines. Such prevention systems considerably improve safety in Polish coal mines.
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