Confirmed by 'spycatcher',peter wright.Mi5.Used against the greenham
   common wimmin anti-cruise protestors.
   From Green Anarchist, issue 10, February March 1986, page 4.
   Strong signals of up to one hundred times the normal background level
   of electro-magnetic radiations have been detected on a number of
   occasions. They are almost certainly capable of producing harmful
   effects on human beings.
   Although high signal levels are to be expected near a military base,
   the highest signals found are some ten times above anything we have
   recorded on the same instruments at other sites.
   We have also found that the strongest signals generally appear at those
   places where the women say they have suffered ill effects, and they
   followed a well defined path. Strong signals recorded on one occasion
   near the green gate were found to cover the womens' encampment but stop
   abruptly at the edge of the road leading up to the gate. The signals
   were also absent in the area around the nearby house.
   The strength of the signals has also been found on occasion to reflect
   the activity of the women. Signals at scarcely more than the background
   level have been found to increase rapidly when the women start a
   demonstration.
   [1]http://www.greenanarchist.org.uk/Zapp.htm

References

   1. http://www.greenanarchist.org.uk/Zapp.htm