Reuters: Coal mining is making a comeback in Britain as the quest for secure energy supplies chips away at environmental objections and record high prices for the raw material make pits economically viable. For the first time since the 1984 miners’ strike that broke the militant colliery unions, saw coal imports surge and mines close, pits are reopening and miners are being recruited. "Coal has never gone away, but with the price having more than doubled in the past year and …