Feasibility Study and Technical Report - Pretivm

The unit cost estimates are based on the LOM ore production and a mine life of 22 years.The currency exchange rate used for the estimate is 1:1 (Cdn$:US$). The operating costfor the Project has been estimated in Canadian dollars within an accuracy range of±15%. A summary of the overall operating cost is presented in Table 21.3. The costdistribution is illustrated in Figure 21.1.Table 21.3Overall Operating CostAreaPersonnelUnit Operating Cost($/t milled)Mining * 316 ** 93.18Processing 95 18.16Material Re-handling *** Contract 0.07G&A 43 25.47Surface Services 78 16.53Backfilling 6 2.10Water Treatment 4 0.95Total 542 156.46Notes:*Average LOM mining cost including crushing cost and cement cost for backfill; if excluding the oremined during preproduction, the estimated unit cost is $94.40/t**316 workers during year 1 to 14 and then reduce to 167 workers at the end of the mine life.***Material re-handling cost is the LOM average cost, which will occur in year 1 only. The operationis assumed to be contracted with approximately eight workers required.Figure 21.1Overall Operating Cost DistributionPretium Resources Inc. 21-10 1291990200-REP-R0012-02Feasibility Study and Technical Report on the BrucejackProject, Stewart, BC