Nearly 200 metres long and weighing over a thousand tonnes, HS2’s final tunnel boring machine is an underground factory digging a railway to Euston.

The 900,000-pound machine that started boring a gargantuan sewage and stormwater tunnel under Seattle in 2021 at last burst into the open this month, completing its rocky 2.7-mile route in just under ...

You might not think so at first, but a tunnel boring machine (TBM) can be fascinating in its own way. Imagine a giant machine, with an elongated shape, that digs her way under the ground, as to not ...