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Current Refinements
Date 2009
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Content Type News (1) Features (1)

OPG’s Niagara tunnel build pushes ahead despite rock fall
18 September, 2009
Planned maintenance work has been brought forward for tunnelling equipment on Ontario Power Generation’s (OPG) Niagara Tunnel project while a small rock fall at the temporary lining is investigated and repaired.

New tunnel to optimize hydro potential at Niagara
27 May, 2009
Ontario Power Generation’s Niagara tunnel project includes the planning, design and construction of a 10.2km long, 12.7m internal diameter tunnel and associated facilities to divert an additional 500m3/sec of water from the Niagara river upstream from the Horseshoe Falls to the existing Sir Adam Beck generating stations near Queenston. The design/build contractor, Strabag, is using the world’s largest hardrock tunnel boring machine to excavate the tunnel. By Richard A Everdell

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