Feasibility Study and Technical Report - Pretivm

10.0 DRILLINGInformation in this section has been excerpted from Olssen and Jones (2012c) which wassourced from sections within Ghaffari et al. (2012). Snowden has updated and verifiedthis information.10.1 HISTORICAL DRILLINGDrilling on the Property dates back to the 1960s, although most of the historical drillingwas completed in the late 1980s and early 1990s. Up to this time, 452 surface diamonddrillholes were completed, which totalled 60,854 m. These holes were relatively short,averaging 135 m per hole, and were mostly concentrated on West Zone, followed byShore Zone, Galena Hill and Gossan Hill. As part of this exploration program, anexploration ramp was driven on the West Zone from which an additional 442underground diamond drillholes were completed, which totalled 33,750 m. This drillingwas focused exclusively on West Zone and increased the drill density to approximately5 m centres between 5 m and 10 m sections. Historical drill core sizes for surfacedrillholes were NQ (47.6 mm diameter) and BQ (36.5 mm diameter). Core size fordrillholes collared from the underground exploration ramp was AQ (27 mm diameter).10.2 SILVER STANDARD DRILLINGUsing the historical drill and trench data as a baseline, and following on the success ofthe Snowfield bulk tonnage drilling to the north, the 2009 Brucejack drill program wasdesigned to test for additional bulk tonnage resources on the Property. This programsuccessfully discovered several areas with bulk tonnage mineralization. Within thebroader bulk tonnage mineralization were locally discreet high-grade intersections.These included holes SU-5 and SU-12, which were drilled to test for the westernextension of the previously defined Galena Hill. These two holes intersected 1.5 m of215 g/t Au and 1.5 m of 16,949 g/t Au, respectively, in what would eventually be calledVOK. Drilling in 2009 totalled 17,846 m in 37 holes, of which 2,913 m in 6 holes weretargeted at VOK.In 2010, the drill program was designed to further define the bulk tonnage mineralizationfound the previous year, as well as to attempt to define a high-grade resource at VOK. Inthis year, a total of 73 diamond drillholes was completed which totalled 33,400 m. Ofthis, 11 holes comprising 3,693 m were targeted at VOK, and 2 holes totalling 1,119 mat the footwall of West Zone. In VOK, wide-spaced drilling intersected enough high-grademineralization to confirm the exploration potential of the zone. The exploration potentialincluded the preliminary definition of some of the ore controls, which put theintersections into a geologic context. The West Zone drilling intersected a broad zone ofbulk tonnage mineralization, within which were several high-grade intersections.Pretium Resources Inc. 10-1 1291990200-REP-R0012-02Feasibility Study and Technical Report on the BrucejackProject, Stewart, BC