[LINK] Early Warning - IPND

[Jan Whitaker]

At 11:20 AM 24/02/2009, Richard Chirgwin wrote:
>  It should also be remembered that telephone-based emergency warning
> > systems are only a supplement to, and not a replacement for, the range
> > of measures currently used to warn the public of emergencies, such as
> > television and radio, public address systems, doorknocking, sirens,
> > signage and the internet.
> >

I heard a snippet on ABC radio this afternoon when I wasn't paying a 
lot of attention that said something like the use of sirens  would 
not be (re?)introduced because they had been superceded. The reader 
did say superceded by what.

Jan



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