Some years ago, Steve wrote a hand-dug well construction manual for the World Bank. It has now disappeared from the World Bank website, but is posted in PDF format here.
The Hand-dug well manual, linked below, has now been updated, to repair the broken links to the shop and construction drawings.
The complete manual can be found at the link below. Enjoy.
The contact email address, once provided at the end of the manual linked here, is obsolete, and for the present, the author can be reached at firstname.lastname@example.org, or through the “Contact” page on this site.