This ultimately reduces {HEAD ~ the methane saturation} of {TAIL ~ the coal bed} and increases the capacity of the coal bed for hydrogen storage 
of
This ultimately reduces { HEAD ~ the methane saturation } of { TAIL ~ the coal bed } and increases the capacity of the coal bed for hydrogen storage
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH