Source: http://allafrica.com/stories/201103160198.html
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Wednesday 16 March 2011
Southern Africa: Plumbing Grey Data for Clear Water
They come like pilgrims to the Department of Geological Surveys office in Lobatse, 120 kilometres south of the Botswana capital. In the sparsely furnished offices there, they pore over charts, trying to take the guesswork out of choosing where to sink a borehole.
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