1. Drilled Wells.   72 page manual outlining common drilling methodology  for water well construction  - as typically applied on a PAT Drilling machine.

2. PAT Book of borehole designs. A short guide to water well construction using uPVC plastic casing & screen linings in common use with PAT machines.

3.  PAT Borehole Development Compressor. An explanatory manual that details the application of using a small capacity air compressor  to  clean  and develop screened boreholes.

4. World Bank WSP water & sanitation program paper entitled:

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