When a car is scrapped at an Authorised Treatment Facility (ATF) in the United Kingdom, it goes through a process called Vehicle Depollution. This process involves removing hazardous materials from the car, such as the lead-acid battery, tires, Liquid Petroleum Gas (LPG) gas tanks, airbags, and fluids deemed hazardous. Catalytic converters and switches containing mercury chemicals are also extracted. Once depolluted, the car is then crushed, and its metals, plastics, and fibers are separated and recycled.