Six 'Impossible' Bores

May 2011
Underground Construction;May2011, Vol. 66 Issue 5, p25
Trade Publication
The article describes the different bores made by Apex Directional Drilling LLC at Cascade Mountain in Washington. It states that all the six bores had different engineering issues and comprised of high grade changes and steep slopes. It notes that the Bore 1 was around 1,700 feet under a heavily wooded canyon, wherein the bottom of the canyon spans another 300 feet and Bore 4, was 1,200 feet under a canyon, but the layout needed a set up location that hinders drilling.


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