‘Holey’ breaks through on Spadina

On Tuesday, May 1st, ‘Holey,’ one of two Toronto Transit Commission tunnelling machines, broke through on the first northern heading for the Southern Tunnels Contract of the 8.6km long Toronto-York Spadina Subway Extension, reported TunnellingJournal.com May 2 . ‘Moley’, the second TBM to get going on the project, has about 150 rings remaining and is expected to follow Holey’s breakthrough within the next fortnight. Read full story.