DR. A milestone in the delivery of critical infrastructure to Port Colborne, Ontario, was reached with the installation, on July 9, of the first of two parallel concrete tunnels covered with 1.5 meters in diameter and 310 meters in length through the rock just below the Welland Canal. The tunneling operation by Ward & Burke Microtunneling took 33 days to be completed. The drilling of the second tunnel began in mid-August and should be completed …
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DR. A milestone in the delivery of critical infrastructure to Port Colborne, Ontario, was reached with the installation, on July 9, of the first of two parallel concrete tunnels covered with 1.5 meters in diameter and 310 meters in length through the rock just below the Welland Canal. The tunneling operation by Ward & Burke Microtunneling took 33 days to be completed. The drilling of the second tunnel began in mid-August and should be completed …