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.
