Stock Photo - Different lamps are on display at the German Mining Museum in Bochum, Germany, 21 February 2014. The museum is one of the most important mining museums in the world and a renowned research establishment for mining history. It is one of the most visited museums in Germany with around 400,000 visitors per year. Above-ground exhibitions and a faithfully reconstructed show mine below the museum terrain give visitors insights into the world of mining. Photo: Horst Ossinger/dpa - NO WIRE SERVICE | usage worldwide. - Bochum/North Rhine-Westphalia/Germany

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