الملف الشخصي بت تروبيندو التعدين الفحم
التعدين إمدادات جوهانسبرغ. The Toxic Landscape of Johannesburg's Gold Mines WIRED. Jun 18, 2014 More than a century of gold mining has left towering piles of bleached mine waste, known as "tailings," all over Johannesburg's landscape. far it hasn't come into the main city's .