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1930 Artist Publishing Bergbau Bergmannsleben Bergwerk Berufe Berufe - Bergbau Dampflokomotive Grubenarbeiter Hüttenwerk Insuta Gold Coast Ghana Insuta Goldküste Ghana Kaliwerk Koehler Kumpel Köhler Künstlerverlage Manganese Mine Mine Mineria Minig Motive Raphael Tuck & Sons Schacht Soziales Leben Tagebau Zeche artist - postcards artists Manganese Mine charburner charcoal burner coal mine coal miners coal mining cored cored hole get Social Life historical historisch industrial minière industrie minière mate mine mine shaft miner life minería mining mining industry motives motives postcard open pit open pit opencast opencast minig opencast pit potash mine professions professions - mining steam locomotive steel mill strip mining surface mining underground well