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Looking like a cross between a space capsule and a showerhead, the Tunnel Boring Machine (or TBM as the engineers call it) makes a hole 14.4 metres in diameter under the city of Niagara Falls. By the time it finishes the 10.4 kilometre underground grind from the Niagara River to the Sir Adam Beck Complex, it'll chew up 1.6 million cubic metres of rock and dirt, enough to fill Toronto's Rogers Centre to the roof.
OPG's commitment to minimal environmental impact extends to the Niagara Tunnel Project. Because we're sensitive to concerns of the community of Niagara Falls, the creation of this new wonder of the world will have minimal impact on residents. At ground level, about 140 metres above the TBM the vibrations from the machine will be barely perceptible. As rock is bored it will be carried by conveyor back to a storage site on OPG property.
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