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West Wall 2 (Southern <br />Expansion Area) <br />Legend <br />(45 °/120 °) <br />West Wall 3 (Southern <br />Expansion Area) <br />(45 °/091 °) <br />Equal Area, Lower Hemisphere Stereonet Plot <br />Friction Angle: 33° <br />\ Wall Orientation <br />Planes of Discontinuity Sets <br />Critical zone <br />O Wedge intersection within the critical zone <br />0 Plane dip vector within the critical zone <br />