Feasibility Study and Technical Report - Pretivm

The results of all the six locked cycle tests are shown in Table 13.31 and summarized asfollows:• The average metal recoveries from the VOK Zone composites wereapproximately 97.8% for gold and 94.3% for silver. Approximately 53.9% of thegold and 28.6% of the silver reported to the gravity separation concentrate. Theflotation concentrate contained approximately 130 g/t gold, 252 g/t silver, and0.68% arsenic.• Average recoveries from the master composite of the West Zone wereapproximately 94.0% for gold and 90.8% for silver. Approximately one-third ofthe gold reported to the gravity separation concentrate. The flotationconcentrate contained 48.6 g/t gold, 2,800 g/t silver, and 0.24% arsenic.• The addition of copper sulphate, together with regrinding of the rougher flotationconcentrates, did not appear to improve the recoveries of the target metals.A review of the locked cycle test procedures and results indicated that the flowsheettested was robust for the mineralization.Pretium Resources Inc. 13-48 1291990200-REP-R0012-02Feasibility Study and Technical Report on the BrucejackProject, Stewart, BC