Уул уурхайн туслах үйлчилгээ Mongolia Mining 2019. Mongolia Mining 2019 International Mining & Oil Expo will be held for the 6th consecutive year on 10 - 12, April 2019 at Buyant Ukhaa Sports Palace, Ulaanbaatar, Mongolia. ... MTM trapezium бутлуур ... уул уурхайн бутлуурын ...