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A new angle on pyramids

Scientists explore whether Egyptians used concrete

MIT students under the direction of professor Linn W. Hobbs (center) are building a scale model to test a contrarian theory. MIT students under the direction of professor Linn W. Hobbs (center) are building a scale model to test a contrarian theory. (Dina Rudick/Globe Staff)
By Colin Nickerson
Globe Staff / April 22, 2008

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CAMBRIDGE - It's a theory that gives indigestion to mainstream archeologists. Namely, that some of the immense blocks of Egypt's Great Pyramids might have been cast from synthetic material - the world's first concrete - not just carved whole from quarries and lugged into place by armies of toilers. (Full article: 1216 words)

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