Guardian: If 300 workers were to die in a nuclear accident or a shale gas blast, such an energy source would be doomed. Not so coal. Coal is the filthiest and most polluting form of energy, and the most dangerous to extract. I recall my Welsh grandfather boasting that none of his sons had "gone down the pit". Yet coal continues to exert a mesmeric hold on the world's imagination, especially on the left. Labour supported Arthur Scargill's determination to keep pits open. The party prevented Tony Blair from...