TarihiMahakar ma'adanin kwal a JamusTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoTarihi04/30/2018April 30, 2018Me ya kamata a yi da ma'adanin kwal da aka daina amfani da shi? Gundumar Ruhr a Jamus na fatan rufe mahakar kwal ba tare da rasa muhimmin ginshikin tarihinta ba.https://p.dw.com/p/2wvXRTalla