"Phil Allison" wrote in message
...

"Jay *******"

Another source of lead is CRTs, many of which are still in use.
They contain about 5 pounds of lead each for radiation protection,
quite a bit more than is contained in the solder in the PC boards.



** Silly comparison.

Glass does not break down in the environment.

So how would any of that lead get out ??



...... Phil


Apparently, in America, they crushed the glass to powder or some such to try
to prove this. I'm sure that someone from that side of the pond, knows the
details. The lead which is contained in the faceplate glass to minimise x
radiation to acceptable levels, is actually not metallic lead, but lead
oxide, and is very firmly locked into the molecular structure of the glass,
so wouldn't readily leach anyway. 5 pounds of lead is probably a bit on the
enthusiastic side on average. 'Big' tubes may contain this amount, or even a
little more, but average sized ones, and computer monitors, would probably
be around half or a little more, than that figure. LCD displays, of course,
do not require this radiation protection.

Arfa