b'2016Asian expansionMining services continue at theTeguh Sinar Abadi and FirmanKetaun Perkasa concessions, securinga contract extension for Melak Coal Mine in East Kalimantan, Indonesia. In Mongolias southern Gobi Desert, Thiess secures the first underground decline project, a joint venture with local contractor Khishig Arvin Industrial at the Rio Tinto-operated Oyu Tolgoi Copper and Gold Mine.Oyu Tolgoi boxcut and decline project, Gobi Desert, Mongolia, c. 2020.113'