§ 47 and 48. Mr. A. Royleasked the President of the Board of Trade (1) if he will detail the experimental investigations that have been carried out into pollution from jet engines; when they commenced and were completed; who conducted the inquiry; and which residential 135W areas beneath the glide path into Heathrow Airport were visited by members of the investigation team;
(2) what evidence he has acquired that atmospheric pollution from jet engines is small compared with other sources; and if he will detail the other sources referred to in his answer to the hon. Member for Richmond, Surrey, on 22nd October, 1969.
§ Mr. Goronwy RobertsIt would not be practicable to list all the research undertaken in recent years, both here and abroad, which confirms that the contribution of aircraft to atmospheric pollution at ground level is small compared with that of road vehicles or industrial and domestic sources. Special measurements were made at Heathrow in 1958, 1962 and 1965 by the National Gas Turbine Establishment in collaboration with the Air Pollution Unit of the Medical Research Council and further investigations are in train. Other measurements show that there is no particular concentration of pollution near Heathrow, but there has been no special investigation of residential areas beneath the glide-path into Heathrow.