Table of Contents

1. Prologue - Favorable Conditions2. Initiation of Exploration - First Regional Reconnaissance3. Third field season – Prospecting for Copper Porphyry Systems4. Drilling Results5. Prospecting for copper and Gold6. Integrated Approach to Resource Development7. Corporate Changes in BHP8. Search for Investors9. Agreement with Ivanhoe Mines10. First period of Ivanhoe Mines Investment11. New corporate changes in BHP12. Ivanhoe Achieving Full Ownership of Oyu Tolgoi13. BHP Final Departure from the Project

About the Author

Graduate of the Russian Peoples' Friendship University, PhD, Associate Professor. In the position of Central Asia Exploration Manager of BHP Billiton he supervised the company prospecting and mineral exploration programs in Asia (Mongolia, China, Kazakhstan, the Philippines, etc.). Expert in porphyry copper, gold, uranium and copper-nickel deposits with more than 25 years of experience in the mining industry. Working at global leading mining companies he led to a discovery of new mineral deposits in Asia and South America. Graduate of the Irkutsk Polytechnic Institute 1973, Sanjdorj worked in the mining industry of Mongolia for more than 40 years. Participated in the search and exploration of ground water resources across Mongolia. He was supervising water exploration, environment protection and geology. Sanjdorj is Emeritus Vice President of the Oyu Tolgoi Company. He has been awarded a title of Honorary Worker of the Industry of Mongolia. He is currently a Consultant for the company. A graduate of the Irkutsk Polytechnic Institute 1975, Jamsrandorj started his career in the Darkhan geological expedition of Mongolia. He is an expert in gold and uranium exploration. Jamsrandorj is a discoverer of gold placer deposits Buhlei and Zaamar. Jamsrandorj has more than 40 years of experience working in various management positions in the scientific and industrial exploration industry of Mongolia.