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To: Jonty30
Not impressed by cement's thermal properties, but if you want to build something earthquake proof, use irregularly fitted blocks.


9 posted on 02/10/2019 11:04:06 AM PST by Sirius Lee (In God We Trust, In Trump We MAGA)
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To: Sirius Lee

Machu Picchu.


17 posted on 02/10/2019 11:28:26 AM PST by dljordan
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To: Sirius Lee

Looks Inca.


51 posted on 02/10/2019 2:25:36 PM PST by Rebelbase
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