Mongolia is planning to sell shareholdings in its biggest coal mine and in ten State enterprises as it seeks to revive growth and boost foreign investment in one of the world’s tiniest stock exchanges. Mongolia gets 90% of its revenue from mining and Mongolian Prime Minister Chimed Saikhanbileg, pictured, was in London dealing with fallout from Mongolia’s battle with diversified mining company Rio Tinto over underground development of the giant Oyu Tolgoi copper mine, which left the country once ruled by Genghis Khan struggling to stabilise its balance of payments.