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<p>[QUOTE=&quot;-jeffB, post: 3058478, member: 27832&quot;]Emphasis on &quot;away&quot; -- something combines with the metal and takes it <b>away</b> from its original position on the coin. And once that happens, it can&#039;t be put back, any more than you can un-scramble an egg. You can turn the oxide or sulfide or chloride or carbonate back into metal, but you can&#039;t put that metal back where it came from on the coin. (And if you try, you&#039;re &quot;doctoring&quot;, not &quot;conserving&quot;.)[/QUOTE]</p><p><br /></p>

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