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Mid-Continent Quarry — WEST FACE <br /> Proposed Bench Geometry <br /> 1.67 Horizontal : Vertical <br /> 1.66 <br /> • <br /> 150 <br /> 140 <br /> 130 — <br /> '20 <br /> 110 <br /> 100 <br /> 90 <br /> 80 <br /> 50 ft <br /> 70 <br /> 60 _ <br /> 50 ' — -- - - - - -- <br /> 40 <br /> 30 <br /> 20 <br /> 10 <br /> f ' <br /> 0 <br /> 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 <br /> (ft} <br /> Name: Joint material - Massive Limestone <br /> Unit Weight: 150 pcf <br /> Effective Cohesion: 40 psf <br /> Effective Friction Angle: 25 ° <br /> Mid Continent Mine Bench Geometry <br /> KILDUFF Failure Analyses Stability Model <br /> UNDERGR0UNo and Stabilization <br /> ENGINEERING , INC. <br /> Glenwood Springs, CO Appendix D <br />