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Methods for gas extraction are currently ranked among clean coal technology. Coal gas is a normal part of coal deposits a nd its mining reduces methane emissions. Underground coal gasification is a non-traditional mining method that also allows use of coal deposits which are not possible to be mined by traditional methods. These technologies bring both positive and negative aspects aff ecting the environment. This contribution is covering the influence of gas extraction from coal deposits on the environment accomp...

Coal is one of the main energy sources in condition of Slovak republic. During process of gasification there is rising coal gas that presents natural part of every coal bush. Methane presents its significant element. One of the technologies for ga s obtaining in situ is also underground coal gasification – UCG. Technologies for gas obtaining from the coal layer are considered as “clean coal technologies.” Despite of their using there can be contamination of every element of the living environment. By not per...