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Of course, manual drilling does not work everywhere. Clay, sand, and compacted sand are ok, but rock or large stones are not ok. But it just happens to be the case that hundreds of millions of people live in areas which have just the right soil types. One such country with the right soil type is Bolivia. It is home to two different manual drilling technologies, the EMAS method (which we will meet in one of the next blogs) and the Baptist method.
[[Image:baptist.jpg|thumb|center|300px|A team of 5 drilling a well in Bolivia. Photo courtesy Terry Waller]]</em>
====Baptist drilling====