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To: Condor51

The Romans also used a lot of concrete. For that matter, I agree with those who say the Egyptians used yet another form of concrete to build the Giza pyramids.

http://www.freerepublic.com/tag/davidovits/index

26 posted on 07/09/2011 2:57:45 AM PDT by SunkenCiv (Yes, as a matter of fact, it is that time again -- https://secure.freerepublic.com/donate/)

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To: SunkenCiv

I will get back to you a little later today re: concrete & pyramids.

I just got up a while ago and I 'ain't' clicking on all cylinders yet.

28 posted on 07/09/2011 5:38:05 AM PDT by Condor51 (The difference between stupidity and genius is that genius has its limits [A.Einstein])

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