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21 Jun 2016
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Policies
Unconventional Gas
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Rebecca Osborne
Unconventional gas development (UGD) is the extraction of natural gas which is difficult to access conventionally, from coal seams, shale or other rock formations, using techniques such as directional drilling and hydraulic fracturing (fracking). Hydraulic fracturing involves the pressurised injection of fluids, sand and chemical additives into rock to open up fractures, allowing gas to flow out.