Wednesday, 21 August 2013

Is fracking all we have to worry about?

Great article mentioning Warwickshires plight!

As demonstrations grow against “fracking” in the UK, another controversial gas extraction method has quietly been licensed. Underground Coal Gasification, or UCG, is the drilling of wells to set fire to underground coal seams and the channelling of the mixture of gas by-products including hydrogen, carbon monoxide, methane and large volumes of carbon dioxide up to the surface.
Two well heads are required in the UCG process, one to inject air or oxygen down to the coal chamber and another to extract the resulting mix of gases produced by burning the coal underground. Water taken either from the surface, or from below the ground is also required for the UCG process (over and above the water private companies already want to use for “fracking”). Once the gas runs out in the initial well location, the well heads are moved to follow the coal seam. This process leaves behind underground caverns contaminated with toxic waste, as well as scarring the countryside further as the wellheads creep along.

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Article by Mel Kelly

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