A prototype low-cost drilling rig was imported to Uganda in August 1999 and handed over to Mpigi District Government. Field trials of this machine were undertaken between 20 th August and 13 th November 1999. This work ...

Despite all the efforts to date to improve access to safe domestic water supply and sanitation in less developed countries, still between 1 and 3 billion people lack these essential services. The causes of this situation ...