Hand Operated Well Drilling: Difference between revisions
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Latest revision as of 02:27, 27 August 2016
This link contains information on the basic hand-operated drilling method. Perhaps you will gain a much better understanding of the drilling method when you watch it carefully. https://vimeo.com/50990902
I hope this helps, dear Marcin.
Alberto Sincerely yours,
Alberto Lobo-Guerrero S.