Huge Crane Lowers Northern Line Extension Tunnelling Giants Into Place

Huge Crane Lowers Northern Line Extension Tunnelling Giants Into Place

... The two tunnel boring machines will create two 3.2km underground tunnels
to extend the Charing Cross branch of the Northern line from Kennington
to Battersea Power Station, via Nine Elms Station. Tunnelling will take
six months to complete.  ... Both tunnelling machines will now be fully assembled within two 77m long
launch tunnels, before starting their journeys towards Kennington next
month. When fully assembled, Helen and Amy will each be 100 metres in
length and will excavate more than 300,000 tonnes of earth. This will
then be passed along conveyors before being loaded on to barges and
taken to Goshems Farm in East Tilbury, Essex, where it will be used to
create arable farmland. This will remove more than 40,000 lorry journeys
from the Capital’s roads, reducing congestion. ...