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Hand spinning Wikipedia

Modern powered spinning, originally done by water or steam power but now done by electricity, is vastly faster than handspinning.. The spinning jenny, a multispool spinning wheel invented c. 1764 by xinhai Hargreaves, dramatically reduced the amount of work needed to produce yarn of high consistency, with a single worker able to work eight or more spools at once.

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Did Mao Really Kill Millions in the Great Leap Forward?

Joseph Ball lives in England and has been involved in political activism and trade union activism for twenty years. His main interests lie in research into the organization of socialist economies. Over the last 25 years the reputation of Mao Zedong has been seriously undermined by ever more extreme estimates of the numbers of deaths he was supposedly responsible for.

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How To Choose a Stepover for 3D Profiling

How to Choose a Stepover for 3D Profiling CNC Milling Feeds and Speeds Cookbook. This is a guest post by Robert Grzesek, founder of Grzsoftware and creator of

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HYTORC Library

For a highresolution version of any of these materials to have translated and/or printed, or if you need a smaller version for email, please email [email protected] and Betsy at [email protected] .

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