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Mai nCressonSlopeEvaluation AdrianBrown <br />7.1.5 Summary of parameters <br />Based on the above, the following parameters have been derived for slopes at the Main Cresson Mine: <br />Method of analysis Hoek and Bray Ladanyi and <br />Archambault <br />Height of slope 700' 700' <br />Rock quality Good n/a <br />Effective stress cohesion(MPa) 1.98 0.3 <br />Effective stress cohesion (psi) 290 41 <br />Effective stress friction angle (°) 41 46 <br />The Hoek and Bray parameters provide an estimate of the strength conditions which are appropriate for <br />situations where a kink band or shear zone will not form due to the stresses induced by the slope. <br />However, where stresses are high, and blocksize is relatively small, the kink band situation should be <br />• considered. <br />U <br />1385D.980612 48 <br />