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Cj~ <br /> <br />• <br />• <br />MainCressonSlopeEvaluation <br />AdrianBrown <br />7 2.3 Summary of overall slo a design <br />Based on this conservative analysis, the proposed 700 foot high east wall of the Main Cresson Mine is <br />expected to be stable at the maximum angle which can be mined of about 60° with a factor of safety <br />against rotational failure of 3.6, and a factor of safety against failure in the event of formation of a shear <br />zone or kink band of 1.33. <br />Both analyses indicate that the east mine wall will be stable at 60° overall slope. <br />7385D.980612 52 <br />