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RE: Finding copper in the tailings pile

in #rockhound • 5 years ago

I have a lot of older Canadian pennies, I've been collecting them for about 40 years or so. We get them in change sometimes here in Upper Michigan.
The U. S. quit making real copper pennies in 1981 I believe. Everything since then is copper clad base metal. I have a few pounds of pre 1981 pennies. :-)

5 years ago in #rockhound by
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