Diamond Digging in Ghana - GIAJun 13, 2013 . The Birim River remained one of the world's most productive sources through Ghana's independence in 1957, until the late 1970s when the richest areas were mined out and the aging mining equipment was unable to efficiently process smaller, lower-quality stones. Today, that is most of what the artisanal.معدات غيانا للتعدين الماس,Small-scale Diamond Mining in Sierra Leone | MINING VideoThis is how diamond mining works near villages in Sierra Leone. Dam up the river, pump out the water, dig out all the gravel you possibly can.then you get.
معدات غيانا للتعدين الماس