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6820 appeared fresh to slightly weathered. Rock exposed above elevation 6820 or closer to the <br />surface appeared slightly to moderately weathered. Highwall orientations are approximately <br />north to south and east facing and foliation and joint orientations are favorable with respect to <br />this highwall development plan. Current mine slopes are being excavated steeper than the <br />default slope configuration utilizing 1'/z: l highwall height to bench width (60 foot highwalls to <br />40 foot benches). Rock observed in the highwalls was predominantly competent with the <br />following exceptions: <br />• Bench 6880 stations 0+75 to 1+05 consisted of granitic gneiss with foliation dipping <br />out of the highwall face creating minor potential for plane failure. <br />• Bench 6880 stations 1+05 to 1+25 consisted of a mixture of granitic and biotite gneiss <br />shear zone. <br />• Bench 6820 stations 0+30 to 2+50 consisted of weathered granitic gneiss with minor <br />biotite gneiss shear zone. This material will be removed before this bench is at its final <br />configuration. <br />Based on our observations the overall slope conditions for the steeper slope configuration are <br />considered stable and warrant primarily operational considerations. <br />-8- <br />Morrison Quarry Annual Report 2008 February 2009 <br />F:\3919_038\Annual_Report_2008\Geotech_Report _2008W nnual_Report_2008_Geotech.doc