The first tunnel boring machine (TBM) deployed on the HS2 Bromford Tunnel project has completed its excavation assignment and is now being disassembled for refurbishment. Known as Mary Ann, the 125-m...
HS2 has reached a major construction milestone with the successful breakthrough of its first tunnel in Birmingham. The 3.5-mile Bromford Tunnel was excavated by tunnel boring machine (TBM) Mary Ann,...
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