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Sludging - Rota sludge

240 bytes removed, 12:34, 29 April 2009

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[[Image:Rota_sludge_well_drilling.PNG|thumb|right|150px|Drilling a 20 m deep well in Chinandega, Nicaragua, with the Rota-sludge method ]]

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~~! width="50%" style="background:#efefef;" | Advantages~~

~~! style="background:#ffdead;" | Disadvantages~~

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~~| valign="top" | Drill in hard soil.<br>~~

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- Can drill in hard soil <br>

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