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<p>[QUOTE=&quot;-jeffB, post: 2774941, member: 27832&quot;]Well, I did find this from Coin World a few years back:</p><p><br /></p><p><a href="http://www.coinworld.com/news/precious-metals/2013/12/silver-dips-unrecommended.all.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.coinworld.com/news/precious-metals/2013/12/silver-dips-unrecommended.all.html" rel="nofollow">http://www.coinworld.com/news/precious-metals/2013/12/silver-dips-unrecommended.all.html</a></p><p><br /></p><p><br /></p><p><br /></p><p>I get my back up a bit when I see someone claim &quot;research has shown&quot; without an explicit reference to the research. Maybe they&#039;re referring to the paper cited earlier in the article, but I can&#039;t be sure, and I can&#039;t get to that paper.</p><p><br /></p><p>But the claims they&#039;re making (&quot;the bond... is so strong that it is impossible to break&quot;) are nonsensical on their face. If the bond is so strong, how can the thiourea continue to react and cause further damage? Either it&#039;s bonded and stuck there, or it&#039;s loose and ready to react further.</p><p><br /></p><p>Sure wish someone with an electron microscope would examine some half-dipped coins. Hello, [USER=84417]@Electron John[/USER] ?[/QUOTE]</p><p><br /></p>

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