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* [http://www.practicafoundation.nl/products/drilling-wells/ Stone hammer info on www.practicafoundation.nl]
* [http://www.rwsn.ch/prarticle.2005-10-25.9856177177/prarticle.2005-10-26.7220595116/prarticle.2005-11-15.6127855822/prarticle.2009-05-11.3051371225 Hand Drilling Techniques.] Rural Water Supply Network. An analysis and comparison of all the drilling techniques, including 3 in-depth manuals of comparisons.
== Acknowledgements==
* The basis for the material on this page was obtained from a desk study shortly to be published on the website of the [http://www.practicafoundation.nl/ Practica Foundation], and from the [http://www.rwsnrural-water-supply.chnet/ Rural Water Supply Network], and specifically its [http://www.rwsn.ch/prarticle.2005rural-10water-25supply.9856177177net/prarticle.2005-10-26.7220595116en/implementation/prarticle.2005manual-11-15.6127855822 drilling manual drilling section].* [http://www.daenvis.org/stonehammer6.htm Stone hammer drilling method].
* [http://www.lboro.ac.uk/well/resources/technical-briefs/43-simple-drilling-methods.pdf 43. Simple drilling methods.] WEDC.
