CoalCoal MiningCoal TarCoal AshPneumoconiosisAnthracosisDustHeatingQuartzAir Pollution, IndoorWaste ProductsAnthracosilicosisPower PlantsPolycyclic CompoundsOccupational ExposureFossil FuelsMiningAppalachian RegionCookingNational Institute for Occupational Safety and Health (U.S.)Industrial WasteIncinerationOccupational Diseases