Saturday, April 13, 2013

Egyptian Inventions for Discovering Gold

This is kinda interesting. The Egyptians of ancient times used to set fires in mines. As the rock got hotter and hotter it would crack. This made it easier to dig and haul out.
Credit:
http://news.nationalgeographic.com/news/2007/06/photogalleries/gold-nile/index.html


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