Salt lake mining, Senegal

Salt lake mining, Senegal

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Credit: MASSIMO BREGA, THE LIGHTHOUSE/SCIENCE PHOTO LIBRARY

Caption: Salt lake mining, Senegal. Microbiologist Bernard Oliver examining samples of salt provided by a salt miner at Lake Retba (the 'Rose Lake'), a salt lake in Senegal. This salt lake, 40 kilometres north of Dakar, is mined for its salt deposits. The pink colour of the lake is due to extremophile bacteria that are found in its waters. In this case, the bacteria are halophiles, thriving on the high salt concentration that ranges from 80 to 300 grams per litre. Oliver works for the French Development Research Institute (IRD), which studies the relationship between humans and the environment.

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