Feasibility Study and Technical Report - Pretivm

Figure 16.2Brucejack Twin Declines and Ramp System16.2.2 LEVEL DEVELOPMENTSublevels will be accessed from the ramps on a 30 m vertical interval that is defined bythe planned stoping heights. Footwall and hanging wall drives will be set back aminimum of 22.5 m from the ore contact, whereas ramp development will be set back aminimum 50 m from the ore contact. This arrangement promotes long-term geotechnicalstability and provides adequate space for the placement of a fresh air raise and otherancillary services between the ramp and level development.Sublevels generally terminate at a ventilation raise at one or both ends, permitting theexhaust of contaminated air from activity on the level. Figure 16.3 illustrates the VOKZone sublevel arrangement in long section.Pretium Resources Inc. 16-4 1291990200-REP-R0012-02Feasibility Study and Technical Report on the BrucejackProject, Stewart, BC