Used in metal alloys, in polishing agents, and in glass; to manufacture flints for cigarette lighters (misch metal); to make incandescent gas mantles, self-cleaning ovens, carbon arc lighting, and glass; as an analytical reagent (Cerium sulfate); to polish glass (Cerium oxide); and as a catalyst in petroleum refining; Steel Producing; Metal Preparation and Pouring; Mining; Glass Manufacturing; Glassblowing