sentences:  The East Tsankhi section is fully owned by Erdenes Tavan Tolgoi, who chose the Macmahon Holdings and BBM Operta joint venture to mine the site.The contract is for five years, from 2012-2017 and is worth US$500 million.Production from the mine is expected to be 3 million tonnes in 2012 and reaching a maximum production of 15 million tonnes per year once the mine and its associated infrastructure is built, with a total value over five years of US$2 billion.