ugc involves injecting steam and oxygen down a borehole, which extracts gas from the coal and draws the mixture to the surface – a potentially very low carbon method of exploiting coal. identified onshore areas that have the potential for ugc amount to between 7 billion tones and 16 billion tones.

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UGC involves injecting steam and oxygen down a borehole, which extracts gas from the coal and draws the mixture to the surface – a potentially very low carbon method of exploiting coal. Identified onshore areas that have the potential for UGC amount to between 7 billion tones and 16 billion tones.