HC Deb 23 January 1985 vol 71 c456W
Mr. Denzil Davies

asked the Secretary of State for Defence whether the security authorities of the Greenham common air base have used, or have any plans to use, low frequency sound generators for the purpose of crowd control.

Mr. Stanley

Various electricity generators are in normal operational use at Greenham common, but they have no crowd control function and none is planned.