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Manuals, videos and links
* [http://www.wellspringafrica.org Manuals] on Percussion drilling, well construction, manufacturing tools. Cliff Missen, Wellspring Africa, draft 4.
* [http://www.ghanamissionghanawashproject.org/AA%20Drilling%20Manualwp-content/uploads/2012/07/36_Conference_Paper_Manual-Drilling_Ghana_Naugle-1.pdf Professionalization of Manual Drilling Water Wells by Handin Ghana.] GWAMGhana WASH Project, Ghana.
* [http://www.lifewater.ca/resources/link-drilling.htm Manuals and drilling links]. Life Water.
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