Dave,
Where have you been? Don't you know that we use copper plated zinc
pennies? And that eating a copper penny is not considered a hazard, but
the zinc coated ones are? I guess the acids in your stomach either
don't dissolve copper, or it requires a lot of copper to be a problem.
Otherwise, lead killed the Roman Empire, but copper will have killed a
_bunch_ of modern countries.
Does anyone know why aluminum is bad for house wiring? (real question,
not a joke) Is it that aluminum has a greater thermal expansion ratio
than copper, and so the connections worked themselves apart?
Thanks
Richard
>But, I'm thinking that here in the US, we use copper pennies and
>copper water pipe so we probalby dump more copper into the waste
>stream than all the pcb houses put togehter.
>
>Dave
>
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