Aug 14, 2012 . Video of the first test run of ball mill #1 in the Oyu Tolgoi concentrator complex. . First ball mill test run at Oyu Tolgoi August, 2012. IvanhoeMinesLtd . MQX superfine ball mill classification production line/Ball Mill Plant from China Duration: 5:27. . Gold Mining Machine 13,285 views · 4:59.