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https://www.sztolnialuiza.pl/ https://muzeumgornictwa.pl/ Coal, called by many people "black gold", has played a much greater role in history than it might seem. Why is Silesia so valuable to Poland? How long did a certain underground fire last? How is it possible that not so long ago Zabrze had access to the sea? You will learn all this in today's episode. We invite you to watch! Our store: https://hbcwear.pl/ Sources: A.Frużyński, Hard Coal Mines in Poland S. Gierlotka, History of Mining. Subscribe: http://bit.ly/1itOao3 Facebook: / historiabezcenzury PREVIOUS EPISODES: Lord with Eggs - Bolesław Chrobry • Lord with Eggs - Bolesław Chrobry. H... A fag on the throne - Stanisław August Poniatowski • A fag on the throne - Stanisław August Po... JP100% Józef Patriota - Prince Józef Poniatowski • JP100% - Józef Patriota. History without... A girl with character - Maria Skłodowska-Curie • A girl with character - Maria Skłod... A hero in French - Henryk Walezy • A girl with character - Maria Skłod...