Thats utter rubbish, I'm from a mining town near the Notts/Derbyshire boarder, most in Derbyshire struck and many in Nottinghamshire didn't, as a result we were the frontline of the Miners strike, and I know a lot of former miners that were part of the strikes.
Thatcher closed the mines because she wanted to break the political power of Trade unions, the unions had brought down the previous Tory goverment. The pits would still be economically viable today if they had not been closed.
As you can see from , we are now importing a large amount of our coal to fuel our existing stock of Coal fired power stations.
http://www.edfenergy.com/energyfuture/energy-gap-security/coal-and-the-energy-gap-security
To claim the miners were luddites who didn't want change is untrue, they were fighting to save the communities they lived in from a political attack, not to lock the country in the industrial dark ages.