By Robb M. Stewart
MELBOURNE--Rio Tinto PLC (RIO.LN) plans to make its first shipment of copper and gold from the Oyu Tolgoi mine in Mongolia on Friday, an operation the mining company estimates will account for over 30% of the country's gross domestic product when it reaches full production in 2020, a person familiar with the matter said.
A ceremony marking the event will be held that day at the mine in the southern Gobi Desert, about 100 kilometers...