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Sludging - Asian sludge

15 bytes removed, 00:17, 23 May 2015
→‎Manuals, videos and links
* A Water Handbook, Technical Guidelines Series, UNICEF, 1999 - Programming and implementation. [http://www.unicef.org/wash/files/Wat_e.pdf Download].
* Technology notes, section 7; Tube wells and boreholes, WaterAid - An overview of human-powered drilling technologies. [http://www.wateraid.org/documents~/plugin_documentsmedia/technology_notes_2008.../technology-notes-2011.pdf Download]. Website of [http://www.wateraid.org/uk Wateraid.org].
* Multi-service procedures for well-drilling operations, field manual chapter 9, US Military Chapter 9, alternative well construction, manual drilling techniques - [http://www.paulsawyers.com/pdfs/FM_5_484.pdf Download].
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