John Lyles wrote:
> Now for beryllia. It is used in SOME power tubes, not LOTS of them. Eimac had
> to include a disclaimer about it with every tube....
I'm intrigued by 'had to' - do you know why?
It is also in beryllium-copper metal used for EMI gasket material
As I understand it: Be metal in BeCu is very safe. Raw Be is
nasty, but no-one will encounter it in normal life. BeO is toxic
in the same was as asbestos - it's not poisonous, but the
particles cause chronic lung irritation that can develop into cancer.
Steve
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