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Dynamic management system of ore blending in an open pit mine based on GIS/GPS/GPRS[J]. GU Qinghua1, LU Caiwu1, GUO Jinping1, JING Shigun2 1School of Management, Xi’an University of Architecture & Technology, Xi’an 710055, China 2Luoyang Luanchuan Molybdenum Industry Group Inc., Luoyang 471500, China.Mining Science and Technology. 2010(01)