Inert gas asphyxiation lacks oxygen and consists of an asphyxiant gas (one or more of argon, nitrogen or carbon dioxide), causing the animals to lose consciousness. Argon and nitrogen are important components of a gassing process which seem to cause no pain, and for this reason many consider some types of controlled atmosphere killing more humane than other methods of killing. However, "stunning" is often done using carbon dioxide. If carbon dioxide is used, controlled atmosphere killing is not the same as inert gas asphyxia, because carbon dioxide at high concentrations (above 5%) is not biologically inert, but rather is toxic and also
Oil and gas industry in the United Kingdom Oil and gas industry in the United Kingdom The oil and gas industry in the United Kingdom produced 1.42 million BOE per day in 2014, of which 59% was oil/liquids. In 2013 the UK consumed 1.508 million barrels per day (bpd) of oil and 2.735 trillion cubic feet (tcf) of gas, so is now an importer of hydrocarbons having been a significant exporter in the 1980s and 1990s. 98% of production comes from offshore fields and the services industry in Aberdeen has been a leader in developing technology for hydrocarbon extraction offshore. Historically most gas came from Morecambe Bay and