QATAR: Qatar Rail celebrated the completion of tunnelling for the Doha metro on September 25, when tunnel boring machine Msheireb broke through at the site of the future Hamad International Airport station.
In total, 111 km of tunnels have been bored for the first phase of the metro since July 2014. The 21 TBMs in use have been certified by the Guinness Book of Records as the largest number of TBMs operating simultaneously on a single project. Opening of the first three lines is expected in late 2019.
