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sand powered generator, sand power Apr 02, 2015 Re usable sand -power generator It is an innovative invention ,simple technology ,more economical,can meet from domestic (house hold) to large and very large power requirements This process functions by using ordinary sand placed in the main funnel from there allow to fall on the blades of sand

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Greman Sand Making Technology. Sand casting also known as sand molded casting is a metal casting process characterized by using sand as the mold material The term sand casting can also refer to an object produced via the sand casting process Sand castings are produced in specialized factories called 60 of all metal castings are produced via

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Handbook on Good Building, Design and Construction in

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