In article ,
Jeff Layman wrote:

That may be so, but I never came across any. The treatment that was
used then was chromated copper arsenate, which was banned about a
decade ago.

You have a good memory!
http://www.tanalisedtimber.co.uk/Tan...h-Timeline.pdf

Some other interesting information at that website.

Actually, all that I could remember is that the treatment included
copper and arsenic, and it was the arsenic that was banned. I looked
up the rest :-)


Regards,
Nick Maclaren.