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1.38 <br /> 41 Configuration: <br /> Bench Height above El. 7000: 40 ft <br /> 7,700 Bench Width above El. 7000: 40 ft <br /> Bench Height below El. 7000: 70 ft <br /> Bench Width below El. 7000: 30 ft <br /> 7,500 - Bench Face Angle: 90' <br /> Intermediate Bench Width: 100 ft <br /> 7,300 - Material Properties: <br /> y = 160 pcf <br /> c' = 64.2 psi = 9245 psf <br /> �-. 7,100 <br /> 00 cp' = 21.8° <br /> 00 <br /> 0 <br /> 6,900 - <br /> Q <br /> Z <br /> 6,700 F <br /> O <br /> 6,500 <br /> N <br /> W 6,300 r- <br /> 6,100 ilh <br /> 5,900 f <br /> i <br /> 5,700 - - - -L - ---- --- - - - -- -�- I- - J <br /> -1,200 -700 -200 300 800 1,300 1,800 2,300 <br /> Horizontal Distance (ft) <br /> Notes: <br /> Morrison Quarry Case 2 <br /> 1.The Factor of Safety(FS)value shown is for the �1 <br /> critical failure surface. South Quarry Highwall Proposed Benching <br /> Jefferson County, CO GEl <br /> Stability Results Consultants <br /> Aggregate Industries June 2017 Figure B-2 <br />