Feasibility Study and Technical Report - Pretivm

12.2 DATA VERIFICATION BY SNOWDENSnowden’s QP, Mr. Ivor Jones, visited the Brucejack site on February 15 and 16, 2012and June 3 to 6, 2013, and takes overall responsibility for data verification in this report.The following items were verified and completed:• cross-check of Pretivm drill logs with drill core; example core was reviewed withMr. Ken McNaughton• core handling, storage, and security at Pretivm’s core storage facility in Stewart• core logging process, alignment, recovery, mark-up and core sawing, sampling• insertion of blanks, certified reference material• core shack at the Brucejack camp• review of drill logs, assay records and interpretations at Pretivm’s office inVancouver• review of NI 43-101 technical reports incorporating the GeoSpark datavalidation work completed in 2011.Snowden carried out a basic statistical and visual validation of the data prior toestimation and did not find any significant issues.From June 8 to 10, 2012, Mr. Adrian Martínez Vargas completed sample validation underthe supervision of Ms. Lynn Olssen and Mr. Ivor Jones. The following items were verified:• cross-check of collar coordinates• core logging process, alignment, recovery, mark-up and core sawing, sampling• insertion of blanks, certified reference material• core shack at the Brucejack camp• sample transportation and delivery to ALS facilities in Terrace, BC.On June 9, 2012, Mr. Martínez Vargas collected 12 samples from 6 drillholes for assay.The samples were selected randomly as two contiguous intervals per drillhole. Eachsample was taken as the halved interval of HQ cores, then documented, bagged, andsealed. All samples were selected from cores with good recovery, with a weight averaging6.74 kg. Mr. Martínez Vargas transported the samples by car to Terrace and then byairplane to Vancouver, BC. The samples were under the direct supervision of Mr.Martínez Vargas for the duration of the transportation.The samples were sent to the ALS laboratories in Vancouver, BC, for assaying. Thesample preparation and assaying protocol requested of ALS was the same used byPretivm at the ALS facilities in Terrace. Additionally two different standards, provided byPretivm were assayed in order to test the accuracy of the laboratories. The results for thestandards assays are shown in Table 12.1.Pretium Resources Inc. 12-3 1291990200-REP-R0012-02Feasibility Study and Technical Report on the BrucejackProject, Stewart, BC