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Breakthrough in New Zealand

16/04/2009
Breakthrough in New ZealandMcConnell Dowell & Fletcher Construction JV has reported early completion of the 2,953 m-long TBM drive for the Orakei Main Sewer Hobson Diversion (OMSHD), some 17 days ahead of schedule. The mixed face EPB averaged 132 m/week of bored and lined tunnel, with 146 m in the best week, beneath water table of up to 50 m. For more project history visit tunnelbuilder archive, click nz/14. Visit www.macdow.com.au and www.fletcherconstruction.co.nz. 15/09.



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