Laserfiche WebLink
• Goldfield and will install an additional permanent monitor in the City of Cripple <br />Creek. These monitors will continue to be operated for the Cresson Project unless <br />a specific request is made to the OMLR to halt monitoring at any location. <br />5.4.5 Mine Area Stability <br />Previous documentation of mine wall stability has occurred in Amendment No. 6, <br />Amendment No. 7, and Amendment No. 8 for the Cresson Project. In addition, <br />mining has occurred for the last 15 years to depths of greater than approximately <br />800 feet and at designed slope angles without any observable slope failures other <br />than occasional bench raveling. Previous slope stability analyses presented for the <br />Cresson Project have established mine highwall slopes by area, however the key <br />factor in determining mine wall slopes has always been the geology or rock <br />characteristics associated with the mine areas. For the MLE, Adrian Brown <br />Consultants evaluated the mine wall stability based on rock characteristics and <br />developed recommended mine high wall slope designs for each rock type <br />expected to be encountered in the MLE. The following Table 5-6 presents each <br />rock type and the recommended mine high wall slope for that rock type. <br />Appendix 5, Volume IV includes the full design report for mine high wall <br />• stability. <br />• <br />Cripple Creek & Victor Gold Mining Company <br />Cresson Project Mine Life Extension <br />5-11