AT a work face in the Huatung Copper Mine, located on the Liaotung peninsula in northeast China, a veteran miner on a drill car moves a couple of levers and two hydraulic drills mounted on twin booms...
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AT a work face in the Huatung Copper Mine, located on the Liaotung peninsula in northeast China, a veteran miner on a drill car moves a couple of levers and two hydraulic drills mounted on twin booms...