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'11-� <br />NEWMONT <br />GOLDCORP. <br />Graders <br />Caterpillar or equivalent 16G or larger class <br />Vehicle Maintenance <br />Includes tire trucks, lube trucks, and service trucks <br />Miscellaneous Vehicles <br />Crew vans and bus and various light vehicles <br />3.3 Surface Drilling and Blasting <br />Surface drilling and blasting practices are not expected to change with Amendment 13. <br />3.4 Mine Area Stability <br />Documentation of mine wall stability was provided in previous submittals for the Cresson Project <br />and are briefly described below. No changes to mine wall stability are anticipated for this <br />amendment. Stability analysis of other facilities are discussed later in this plan. <br />The slope stability assessment of mine areas, including geotechnical slope recommendations and <br />inter -ramp stability, is discussed in an engineering evaluation performed by Call & Nicolas, Inc <br />(CNI) as part of the Amendment 11 permit application. In general, mining has occurred for the <br />last 19 years to depths of greater than approximately 800 feet and at designed slope angles <br />without observable slope failures other than occasional bench raveling. The CNI engineering <br />evaluation (provided in Amendment 11) also addresses mine area stability as it relates to <br />permanent manmade structures, as discussed in Exhibit T. <br />As discussed above, the Schist Island area of the North Cresson mine area will be modified as <br />part of this Amendment 13. The inter -ramp slope angles recommended for the Globe Hill and <br />Schist Island mine areas, provided in Table D-6, remain applicable under this amendment. <br />Table D-6: Inter -ramp Slope Anqles for Globe Hill and Schist Island Mine Areas <br />WHEX and Schist Foliation Dips <br />1 30° Island Portion of Global S 40.4 60° Towards <br />North Cresson Excavation <br />Schist Island <br />2 52° Portion of North Bench D 34.6 74° <br />Cresson <br />Cripple Creek & Victor Gold Mining Company <br />Cresson Project Amendment 13 <br />12 <br />Exhibit D <br />