On June 2011,the Beijing Research Institute of Uranium Geology,an Institute within the China National Nuclear Corporation(CNNC),and the Department of Geology&Mining CNNC carried out a project Scientific Drilling for Deep Metallogenic Research in the Xiangshan Large Uranium Ore Field.A year later on June 21,the project,representing the first scientific drilling of China’s uranium,was officially launched,and successfully completed on June 17,2013.A 2818.88 m of drilling depth has broken the previous record 1200 m of exploration depth.The XD-35DB drilling machine developed by China Geo-Equipment Corporation is the China’s first AC-VFD DirectDrive Top Drive Core Drill.It has greatly improved