File:Yuan Dynasty - waterwheels and smelting.png

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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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Metallurgy

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