Appliances, Acetylene cylinders, Asbestos-containing materials, Combustible/Flammable materials, Computer monitors/TVs, Hazardous, Toxic, poisonous materials, Fluids/Liquids (antifreeze, fuel, hydraulic fluid, oil, paint, water), Mercury-containing materials, PCBs, Radioactive materials, Refrigerants, any non-metallic materials (concrete, dirt, debris, tires, wood).