On June 18, 2017, John Oliver aired a segment on his show, entitled "Coal". The segment focused on practices in the coal mining industry. Oliver began the piece by showing Donald Trump's fondness for the coal industry. He played clips of him when he was running for president in 2016 in a coal miner's hat and talking to a crowd that had miners in it. In the speech, he told the miners to prepare to work their "asses off" when he became President. Oliver then introduced Bob Murray, who is the head of Murray Energy.