In message , at 15:58:38 on Thu, 4 Jun 2015,
Mizter T remarked:
"Tunnelling work in London has been completed in the £14.8bn Crossrail
scheme.
Eight boring machines have been cutting their way through earth to
create 26 miles (42km) of tunnels."

AFAIAA, there haven't been any tunnelling mishaps, which is perhaps
worthy of note and acclaim.

Only this one: http://www.bbc.co.uk/news/uk-england-london-31592092
--
Roland Perry