A method for the storage of {HEAD ~ hydrogen} within {TAIL ~ a subterranean solid carbonaceous formation} such as a coal seam 
A method for the storage of { HEAD ~ hydrogen } within { TAIL ~ a subterranean solid carbonaceous formation } such as a coal seam
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH