An energy firm which has been test drilling for controversial "shale gas" in Lancashire has said it has found vast gas resources underground.Cuadrilla Resources began testing for gas on the Fylde Coast in March, using a technique known as "fracking". It said it had found 200 trillion cubic feet of gas under the ground, which if recovered could provide 5,600 jobs in the UK, 1,700 of those in Lancashire. Opponents to the process believe it produces damaging carbon emissions.