Considering its current definition (see below) and the wish to be politically correct, I wonder whether the word has come to acquire any racist overtone.
What is a coal miner hewer-Ask.com. Coal miner hewer is a person who hews or cuts the coal from its natural situation. The hewer is the actual coal-digger removing it from the coal face.
rollin coal is a redneck high school term used for idiots who thin its cool to over-heat there turbo and redneck rig there diesel( cummins smoke screw , smoke switch) to blow the most black smoke from there exhaust as they possibly can.