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File:Yuan Dynasty - waterwheels and smelting.png

Summary

Description
English: This medieval printed illustration depicts waterwheels powering the bellows of a blast furnace in creating cast iron. This illustration is taken from the 14th century treatise Nong Shu, written by Wang Zhen in 1313 AD, during the Chinese Yuan Dynasty.
Date 1313 AD
Source http://www.waterhistory.org/histories/waterwheels/
Author Wang Zhen

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