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Very cool: Cutting the channel proved to be a far greater problem as the tools available to Li Bing at the time, prior to the invention of gunpowder, wer
by azernik 13y ago
Very cool:
Cutting the channel proved to be a far greater problem as
the tools available to Li Bing at the time, prior to the
invention of gunpowder, were unable to penetrate the hard
rock of the mountain so he used a combination of fire and
water to heat and cool the rocks until they cracked and
could be removed.
- arbuge 13y agoThis is the same method believed to have been used by Hannibal's army when it crossed the Alps on its way to Rome: http://en.wikipedia.org/wiki/Fire-setting http://en.wikipedia.org/wiki/Fire-setting