Yongji Duan joined Stone Group in 1985 and has served as Vice President and President prior to his promotion to the Chairman of the Board in 1999. He was appointed President and Chief Executive Officer of Stone Group Holdings Limited and its subsidiaries in 2002. As a well-know entrepreneur and business leader in China, Mr. Duan has achieved outstanding performances.

From 1999 to 2007, he has held the position as Director of Beijing Centergate Technologies (Holding) Co., Ltd., a company listed on Shenzhen Stock Exchange. From 2003 to 2008, he also served as Director of SINA Corporation (NASDAQ: SINA). Mr. Duan graduated from Tsinghua University and was a researcher at Beijing University of Aeronautics & Astronautics. He acted as Vice Director of 621 Laboratory at China National Space Administration from 1982 to 1984.



Yong Han was appointed President of Shaanxi Ma’anqiao Ecology & Mine Industry Co., Ltd. since 1993. He is a Senior Economist and Chinese Certified Professional Manager. Since 1998 Mr. Han was appointed Tenure Researcher at China Academy of Management Science. He has held the position as Vice Chairman of Shaanxi Gold Association since 2005.



Fang Lu joined Stone Group in 1990. He became Vice President of the company and its subsidiaries and was appointed to the Board of Directors in 2000. He is also Vice President of Beijing Stone New Technology Industrial Company Limited (“Beijing New Technology”) and Beijing Stone Investment Co., Ltd..  Mr. Lu graduated from Beijing University of Aeronautics & Astronautics and was a visiting scholar at McMaster University in Canada in 1988.



Dr. Kaiye Shuai was appointed Chief Geologist of Stone Resources Limited and was also appointed to its Board of Directors in 2007. Dr. Shuai is an experienced geologist with a wealth of expertise in the mining sector. Prior to his appointment, he has been Professor in China University of Geosciences for over 10 years.

Early in his professional career, Dr. Shuai served as Geological Engineer in No. 16 Geological Team at Yunnan Provincial Geological Bureau from 1970 to 1979. He has participated in the exploration of Potash, Copper and Iron Deposit in Yunnan province in the 1970s and the exploration of Zhaoyuan Gold mine in Shandong province in the 1980s. Dr. Shuai graduated from Chengdu College of geology in 1970.

He received his doctorate and Master degree from China University of Geosciences in the 1980s. From 1991 to 1992, he was a visiting professor at the University of California, Santa Barbara (UCSB) in the United States.


Mr Hobba has over 40 years experience in the mining industry including 10 years consulting for National Mine Management before setting up a mining service company to manage St Francis Mining's operations. He spent the majority of his career in management, construction and commissioning of Processing Plants including Western Mining, Sons of Gwalia and BHP Orabanda.

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