The one activemine in the United States, operated by the company Molycorp in Mountain Pass, California, halted production in 1998 after a radioactive-waste spill and was shuttered four years later.
Being directed against the demand of the mine guniting robot's design, do the active analysis to the situation of robot's arms end.
针对矿井喷浆机器人设计的要求,对机器人大臂端点位置进行运动分析。
3
The snowcapped peaks are Mount Griggs and (far right), part of an active system of ten volcanoes surrounding the valley, a hundred miles south of the proposed Pebble mine.