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<p>[QUOTE=&quot;Collector1966, post: 1282255, member: 17919&quot;]It may be that they discovered other metals first, such as Wood&#039;s metal or Field&#039;s metal, which had much lower melting points and would actually melt in a campfire.</p><p><br /></p><p><a href="http://www.anacs.com/contentPages/ShowArticle.aspx?ID=19&amp;AspxAutoDetectCookieSupport=1" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.anacs.com/contentPages/ShowArticle.aspx?ID=19&amp;AspxAutoDetectCookieSupport=1" rel="nofollow">http://scitoys.com/scitoys/scitoys/thermo/thermo4.html</a></p><p><br /></p><p>But then again, campfires can get pretty hot-- sometimes more than 900 degrees Fahrenheit, hot enough to melt lead and tin</p><p><br /></p><p><a href="http://ukweli.wordpress.com/2007/07/31/temperature-campfire-foods/" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://ukweli.wordpress.com/2007/07/31/temperature-campfire-foods/" rel="nofollow">http://ukweli.wordpress.com/2007/07/31/temperature-campfire-foods/</a></p><p><br /></p><p>And once someone figured out that coal would burn, the temperature that early man could produce from fire rose dramatically-- up to 2800 degrees Fahrenheit or even higher, hot enough to melt copper, silver and gold.[/QUOTE]</p><p><br /></p>

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