b'1988Sangatta Coal Mine, East Kalimantan,Sydney Harbour TunnelIndonesia, c. 2016. The company delivers Australias first immersed tube road tunnel, under Sydneys iconic harbour.PT Thiess Contractors IndonesiaIn a joint venture with PT Mintekino Utama Into, Thiess Contractors wins contracts in Kalimantan, returning Thiess to Indonesia. 64'