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' assumes joint populations that parallel observed faults and shears would result in structures that <br />span the overall pit slope. <br />' Control blasting should be practiced as the final walls are approached. Cautlon.s blasting and <br />excavation must be implemented for all Santa Fe, Pink Gneiss and Green Clay slopes with the final <br />wall being cut by mechanical means (dozer). Eady implementation of a monitoring program is <br />I' essential for safe slope and pit operation. Appendix III provides a review of the principle of <br />cautious blasting and the development of a pit slope movement monitoring system. <br />' The following summarizes the recommendation and conclusions of this study. <br />' - recommended inter-ramp slope angles are shown in Figure 78. <br /> - control blasting be practiced near all final walls <br /> k <br />l <br />t <br />h <br />ld b <br />h <br />i <br />ll <br />d f <br />h <br />k <br />d <br />h <br /> opes are excava <br />ou <br />e geotec <br />n <br />y assesse <br />e wea <br />roc <br />moss s <br />e <br />t <br />ey s <br />ca <br />or <br />- as t <br /> any modifications required in design <br />' <br /> - all weak rock mass slopes be cut mechanically <br />' - minimum catchment bench width of 25 tt. be maintained on the ult(mate walls <br /> - the water table must be maintained to levels below the pit bottom <br /> - geotechnical drilling be conducted once production commences to confirim weak rock <br />' mass strengths where little drill hole information Is available <br /> - re-assessment of the design as mining produces rock exposure in the various design <br /> sectors <br />1 - monitoring pit slopes <br /> <br /> <br />:~ <br /> <br /> <br /> <br />