HC Deb 29 April 1970 vol 800 c319W
69. Sir C. Mott-Radclyffe

asked the President of the Board of Trade by what date he will install two further automatic noise-monitoring sites to replace those at present manually operated at Heathrow Airport.

Mr. Goronwy Roberts:

Sites for two additional automatic monitoring stations to the east of Heathrow have been negotiated and cables have been laid. Equipment is being refurbished and is expected to be in operational use soon.