March 24th, 2011 by Andrew McPhedran
Just completed a 120 foot long, 10 foot diameter earth tunneling project in Montreal for the new McGill Super Hospital. We modified one of our Tunnel Boring Machines for the job. It went under the railway tracks. We broke out into a small exit pit on Decarie Boulevard with barely enough room to pull the TBM out. It looks small in the pit but it is a big piece of steel up close. The concrete pipes we jacked in behind the TBM were pretty hefty too.