BENTONG: The two tunnel boring machines (TBM) that will be used to excavate the twin-bore Genting Tunnel portion of the East Coast Rail Link (ECRL) are the biggest of its kind in South-East Asia, says Transport Minister Datuk Seri Dr Wee Ka Siong.
He noted that the TBM cutter heads from China are equipped with four torque cylinders and weigh 900 tonnes each. They are 25m long and have an excavation diameter of almost nine metres.
