HS2 launches first giant TBM in London
HS2 has fired up its first giant tunnel boring machine (TBM) in London. The 2,000-tonne piece of equipment, known as Sushila, was launched in Hillingdon on 6 October and will bore five miles towards Greenford in west London. Sushila will work on a 24-hour basis for the next 22 months,…