«We haven't seen any evidence [of methane migration] other than the occasional local issue,» he says. (sciencemag.org)
According to the briefing, methane migration from gas drilling, had «caused or contributed to» at least six explosions that killed four people and injured three others over the course of the decade preceding full - scale Marcellus development. (dotearth.blogs.nytimes.com)
That report, according to the AP, would have explicitly linked methane migration to hydraulic fracturing («fracking») in Weatherford, a city with 25,000 + citizens located in the heart of the Barnett Shale geologic formation 30 minutes from Dallas. (pearltrees.com)