Coal diggers, also known as miners, are workers who extract coal from underground mines. They use a variety of tools and techniques to remove the coal from the earth, including shovels, picks, and explosives. Coal diggers must be physically fit and have a good understanding of safety protocols in order to work safely in the hazardous environment of a coal mine. They are responsible for ensuring that the coal is extracted efficiently and safely, and that the mine is kept in good condition.