wrote:
In article lmk0na91dm9c3804bigkkk88tfk5i5s09l@None,
(Arthur Conan Doyle) wrote:
Roland Perry wrote:
Not really, much of them will be worn out, and it's a real issue getting
them out of the ground.
Surprised they didn't just leave them like they did with the Chunnel
TBMs.
The two that have recently arrived at Farringdon will be buried there.
Actually, I thought these would be removed; it's the earlier one(s) that
were left there. It's easy to remove TBMs that emerge into a large station
tunnel, but difficult to remove the cutter head that first cuts that
tunnel. Instead, it's easier to steer it sideways, abandon the cutter head,
but dismantle and remove the long mobile tunnel 'factory' behind it.