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Mining electrician having lunch break in the control room of the Eastern steam winding engine of number 2 shaft, Fürst Leopold colliery, Dorsten, Germany. The two 4-cylinder engines of shaft 2 are the last steam engines in regular use in the Ruhr coal mining district. Put into service in 1914, they will see retirement later this year as mining acitivies have come to an end at this colliery.