also, t checals areixed ansofas d stored ia lge pondnd a mt be insated from the colge whichs sometimenot done on it is drilleded and production, it can still be invisibly polluted.. as much as 9% of f the methane d out of theay leak well. most shale basins are even flat d in a fairly regular deep layer with you a hard rock contractions that would allow water to move upward. dog did from the university of the free state supported natural gas extraction until he embarked on instead of the geology of the desert. he fears that political pathways made by lava flows will allow fracking f fluids anand oththers to rise e and pollllute the watr table. and that goesove -- goeset went to iraq, to the rock. our proboblem is 10 times, 100 times bigger. you don't find these in the u.s.. >> the product is under sucuch pressure that is always looking fofor these prefererred slolow . it is believed in it will find his way up the gas wells. >> w what willll happen a after- 100 years after the abandonment of the well. >> the latest signs from the gas fields of america seems to support his conclusion. accor