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© NERC All rights reserved UK Shale gas: How much gas? How safe to extract? Prof Mike Stephenson British Geological Survey
Documents © NERC All rights reserved UK Shale gas: How much gas? How safe to extract? Prof Mike...

Slide 1© NERC All rights reserved UK Shale gas: How much gas? How safe to extract? Prof Mike Stephenson British Geological Survey Slide 2 © NERC All rights reserved Two…