Wednesday, May 27, 2015

Sand, the great wall

The Kingdom of Khmer(Cambodia as today) had been applied a concept of sand mixed with water to used as foundation. Its foundation is stronger than steel, if it mixed with water. The dry sand may not strong enough but the wet-sand can afford to hundreds tons of combat tank, last for thousand year times.


The US aircraft carrier had been using steel for counter attack from missile or bomb.

If the command and control center allocated underground, it would be more safe from any attack, included nuclear attack.








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