As well as the USA, where residents are fighting the expansion of Shale Gas Methane extraction, known as ‘fracking’: The Marcellus Shale documentary project Photographing fracking. NYTimes com
it is also a problem in Australia with Coal-seam Methane extraction: http://youtu.be/wCMcr27uAg4
patricktsudlow 
very interesting! check these out? i see them every day http://wp.me/p2mS6O-ih
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Thank you for your comment, and I am glad we have managed to prevent ‘fracking’ beome commonplace in the UK, so far.
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