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Soil Type Dry Unit <br />Weight (pcf) Effective <br />Cohesion, C (psf) Effective Friction <br />Angle, ~ (degrees) <br /> North South North South North South <br />Clayey Sand 100 100 100 100 24 24 <br />Sand and Gravel 120 121 0 0 30 34 <br />Mine Plan <br />Mining will begin in the northern portion of the site and proceed from north to south. <br />Sideslopes at the mining limits and around structures will be 3.0:1 (Horizontal: Vertical). <br />No ground water was found in the test borings. <br />Analysis and Results <br />The SSA for the Haldorson property was prepared using the soils values and geometry <br />presented above. The stability of the mined face at a depth of 60 feet was analyzed at <br />various slopes and various setbacks. The results of the analysis are shown in the <br />following table: <br />\\Bgserver\publiclProjects By Client\Haldorson & Sons\03023-Haldorson Mine\03023_Slope Stability writeup_RMM.doc <br />