"Jürgen Exner" wrote:

Halon has been banned years ago because it is one of the worst chemicals
wrt. destroying the ozone layer.

In the Americas, only the manufacture is banned. There's a small industry recycling
the stuff from old systems, and extinguishers are still available and legal to own.
From what I've read, possession is banned in the EU.

George Patterson
If you don't tell lies, you never have to remember what you said.