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ore grinding mills por le russia

ore grinding mills por le Watermill Facts for Kids . History China The watermill was invented in China during the Han dynasty 202 BC 220 AD in order to grind grain as well as to power piston bellows of a blast furnace in forging cast iron In the text known as the Xin Lun written by Huan Tan about 20 AD during the usurpation of Wang Mang it states that the legendary mythological king

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