"Graeme Wall" wrote in message
...
In message
David Hansen wrote:

On Thu, 22 Feb 2007 21:06:50 +0000 someone who may be Roland Perry
wrote this:-

It would probably be more secret. And it depends what the risk is. If it
was a dirty biological bomb in London, and a riot amongst the populace
who were being prevented from leaving for fear of infecting the rest of
the country, it could well be the best of the three options.

The purple powder incident in the Westminster parliament
demonstrated the difference between plans and reality. The bods
should have been kept in the chamber to prevent potential
contamination of others, but they left.

How one would prevent millions of people leaving London is beyond
me.



There was a plan to clear a big open space all the way round London that
could be patrolled by armed police and military units that would prevent
any
one trying to get out from the inner zone. Would have cost many millions
of
pounds to put into practice.

--
Graeme Wall
This address is not read, substitute trains for rail.
Transport Miscellany at http://www.greywall.demon.co.uk/rail/index.html

they went ahead with this plan but substituted a solid wall of stationary
vehicles for the clear space and gave it he code name "M25"


steveb