This piece was originally published in the Guardian and appears here as part of our Climate Desk Partnership. Art Sullivan is considered something of a political heretic by other coalminers in south-western Pennsylvania, where a wave of support for Donald Trump based upon his flamboyant promises of a resurgence in coal helped propel the Republican to the US presidency. “Many of my coalminer friends voted for him,” said Sullivan, who has spent 54 years as a coalminer and, more latterly, consultant to a struggling industry.