Chemicals used in industry and science; biological preparations other than for medical or veterinary purposes; catalysts including biochemical catalysts; refuse derived fuel and stabilised landfill disposal products; chemical re-agents other than for medical or veterinary purposes; chemical filtering preparations; vegetable filtering preparations; gas purifying preparations; gas concentrating preparations; preparations of micro-organisms for industrial purposes; preparations for organic or solid waste; products derived from wastes

Treatment of materials; destruction of waste and trash; recycling of waste and trash; waste treatment and/or transformation; mechanical and chemical process or transformation of objects, inorganic or organic substances; decontamination of waste materials; production of energy; and all other waste by-products