CASE STUDY ONTARIO POWER GENERATION CO. Pipeline Protection Project Data Denso North America 9747 Whithorn Drive / Houston ,TX 77095 Tel: 281-821-3355 Fax: 281-821-0304 info@densona.com After beginning one of North America’s largest hydro-electric tunneling projects at Niagara Falls, the Ontario Power Generation company needed to supply vertical access to a 47.2 foot diameter tunnel being bored 459 feet below the surface. When completed, th

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