Encountering Pingoes
Schematic showing the passage of the TBM through the DFH
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Graph showing the reduction in cutter head contact and torque and... -
Stratigraphy through the DFH following additional ground investigation -
One of the August 2013 boreholes penetrating the NOS -
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Emergency ground model showing DFH -
Schematic showing the passage of the TBM through the DFH -