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subject Cripple Creek and Victor Made by DLG Job No 063-2216 <br />Gold Mining Co. <br />Ore Loading Near Uncertified Liner Checked by Date 2/912007 <br />Goldff, _ Isolation Fla <br />Assodam Global Stability Analysis Approved by Sheet No 2 of 2 <br />cos Q = (tan A)/(tan D) <br />where D is the true dip of the slope, in the direction of maximum dip <br />A is the apparent dip of the slope, as measured in a vertical plane Q degrees from the angle of <br />maximum dip, and <br />Q is the angle (in plan view) between the direction of maximum dip and the direction of apparent <br />dip. <br />CALCULATIONS <br />• A summary of the results and the analysis files are presented in Attachment I a. <br />CONCLUSIONS <br />• The ore must be placed such that the slope is perpendicular to the as-built liner grades. This <br />generally means that the toe of the ore slope needs to be parallel to the liner flap. The ore cannot be <br />placed in a way such that it is unbuttressed downward in the direction of maximum ore slope. <br />• Ore placement for the lifts placed directly on the overliner material must proceed from lower <br />elevations upwards. If ore is placed higher on the slope first, it will result in an un-buttressed <br />condition, which will have an unacceptably low factor of safety. <br />• The first lift must be placed at a slope of 2:1 (H:V) and should be 30 feet in height. <br />• Each subsequent lift may be placed at angle of repose (approximately 38 degrees) and must be no <br />higher than 50 feet. <br />• Overall composite slopes must be 2.2:1 (H:V) or shallower. <br />• SLIDE software and manual <br />• Golder Associates, March 2000. Amendment No. 8, Office of Mined Land Reclamation Permit M- <br />80-244. <br />JAMOBM063-2216 CC&V - LOMDLCiFLAP PROJEMCLOBAL STABIUMDOC