This handbook on the hand powered percussion drill is a reasonably well-illustrated 80-page book providing drill designs, drilling tips and tricks, a little history, and good background information on groundwater.
Click to read >> Drilling Wells by Hand
As well, I have prepared a 12-minute video that explains how the drill works.
Click to watch >> Hand Powered Percussion
To order a printed book, the CD (with book and video), or to make a donation to Wellspring Africa, please click on the following link...