Yesterday, I spent some time in a really big hole. A really big hole! In fact, it's the longest and widest tunnel ever bored through hard rock. A hard rock tunnel, if you will. Ontario's energy minister, Chris Bentley, was taking a tour of the Niagara Tunnel Project. The Tunnel is 10.2 km (6.3 miles) long, 14.5 meters (about 50 feet) in diameter,
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