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<p>[QUOTE=&quot;Just Carl, post: 183816, member: 4552&quot;]Extreamly educational. However, one thing left out that should be noted is what are the Oxydation reations with these metals. For example pure Iron should Oxydise rather rapidly. Same with most raw materials. Even metals like Gold and Platinum can Oxydise. What happens to many of the other metals noted when exposed to moist air and CO2? Or are these products coated?[/QUOTE]</p><p><br /></p>

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