Rio Tinto achieves significant milestone at Oyu Tolgoi

摘要

Rio Tinto has achieved a significant milestone at the Oyu Tolgoi mine in Mongolia with the completion of Shaft 2, which enables the acceleration of work on the underground development. Shaft 2, a 10-metre diameter shaft sunk to approximately 1.3 kilometres below the surface, has now entered into the final stages of commissioning.