TacticalNuke
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- Jun 8, 2006
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Concrete was poured to build the Great Pyramids about 5,000 years ago, according to controversial research, which suggests the ancient Egyptans predated the Romans by thousands of years as the inventors of concrete.
http://dsc.discovery.com/news/2006/...ogy&guid=20061208120000&dcitc=w19-502-ak-0000