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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

Synchronized tunnelling at Niagara
14 May, 2007
A number of operations are being carried out simultaneously to save time during construction of Ontario Power Generation's Niagara Tunnel project

Borcka plant inaugurated
25 April, 2007
The Borcka hydro power plant on the Coruh river in Northeastern Turkey has been inaugurated by the country's prime minister Recep Tayyip Ergodan.

Niagara's new addition
21 September, 2005
A 10.4km tunnel is being constructed to supply additional water from above Niagara Falls to Sir Adam Beck hydroelectric complex in Ontario, Canada

New tunnel for Niagara Falls
19 August, 2005
Ontario Power Generation (OPG) has awarded Strabag AG a contract to design and construct a new 10.4km long tunnel to supply additional water from above Niagara Falls to the Sir Adam Beck power plant at Queenston Heights, Canada.

KHRP urges Moratorium on new dam projects
03 June, 2003

Twin role for drilling rigs
04 October, 2002
Drilling rigs are aiding earthmoving operations involving 600,000m3 of rock per month at the twin Borcka and Muratli dams in Turkey

Birecik: a role model for private companies
16 April, 2001
The Birecik hydro power project in Turkey demonstrates the effective role private companies can play in the planning, financing and construction of hydro power plants

Asphalt concrete cores for embankment dams
10 February, 2000
More than 70 embankment dams with asphalt concrete cores are currently at the design stage, under construction or in operation worldwide. Helge Saxegaard gives a brief historic background to this type of dam

Update on Birecik
13 April, 1999

Borcka and Murati orders announced
13 April, 1999

Contractors move in to Goldisthal
09 July, 1998

Diverting the Yellow River
12 January, 1998
The future development of the Yellow River in China depends on the Xiaolangdi multipurpose dam site. Li Qiyou, Wang Xianru, Lin Xiushan and Zoltán V. Solymár* discuss how well this important project is progressing.



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