There have been 34 tremors in the Blackpool area since Cuadrilla began fracking at nearby Preston New Road three weeks ago, according to data from the British Geological Survey.
All of these seismic events have been imperceptible on the surface.
This begs the question: do they even matter?
From the driller’s perspective, they absolutely do. Any tremor over 0.5ML [local magnitude] on the richter scale requires fracking to stop and testing and monitoring to commence.