Coal would not be mined as it was in the past but as it is a fuel that is still in abundance, sooner or later it will be needed and used.
One possible method that is being tested is Coal Gasificaton. I have touched on this before but for those who missed it follow link below.
http://www.guardian.co.uk/environment/2010/mar/04/coal-gasification-ccs
Coal gasification is the process of producing coal gas, a type of syngas-a mixture of carbon monoxide (CO) and hydrogen (H2) gas-from coal. Carbon monoxide, which is a combustible gas, was traditionally used as a source of energy for municipal lighting and heat before the advent of industrial-scale production of natural gas, while the hydrogen obtained from gasification can be used for various purposes such as making ammonia, powering a hydrogen economy, or upgrading fossil fuels. Alternatively, the coal gas (also known as "town gas") can be converted into transportation fuels such as gasoline and diesel through additional treatment via the Fischer-Tropsch process.
Paul(watty) accused me of being mischievous before when I said St Margaret's would be a suitable location for this. Coal seams in Kent are at their thickest in St Margaret's and if Coal Gasification takes off, St Margaret's would be an obvious choice.