On Sat, 19 Jul 2008 15:07:54 +0100, Andy Dingley
wrote:

On 19 Jul 2008 11:44:22 GMT, (Andrew
Gabriel) wrote:

Small quantities quickly cause bone destruction.
I think it's only a catalyst, so it's not used up
in the process and can just cary on going.

It's not a catalytic reaction, but as you point out it's
self-regenerating and so it does carry on until you take action to stop
it.

Just in "tonight's" local evening rag:-

http://www.sunderlandecho.com/news/C...age.4303866.jp

--
Frank Erskine