Colombian sand miners cross the river Magdalena in a boat to extract the sand from the river bank in Puerto Berrío, Colombia, 3 February 2013. Artisanal (unmechanised) sand mining is an ancient mining technique used to obtain sand for construction purposes. Depending on the natural conditions (strength of the stream, depth of the river etc.), together with the sand miners' physical condition, the material is extracted in metal buckets, either by standing on the river bottom and...more »
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Date > 3 Feb 2013
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