Feasibility Study and Technical Report - Pretivm

Table 21.8Summary of Backfilling Operating CostDescriptionLabourForceAnnual Cost($)Unit Cost($/t Milled)Labour ForceOperating Labour 4 360,000 0.40Maintenance Labour 2 196,000 0.22Subtotal Labour Force 6 556,000 0.62Major Consumables (Included in Mining Operating Cost)SuppliesMaintenance Supplies - 319,000 0.36Operating Supplies - 760,000 0.85Power Supply - 252,000 0.28Subtotal Supplies - 1,331,000 1.48Total (Backfilling) - 1,887,000 2.10The estimated labour force cost is $0.62/t milled with 6 personnel required to operatethe plant. The annual labour cost includes the benefit burden outlined in Section 21.2.3.The maintenance supply cost is $0.36/t milled while the operating supply cost is $0.85/tmilled. The power cost is estimated at $0.28/t milled. The estimates are based on theLOM average mill feed rate.21.2.5 WATER TREATMENT OPERATING COSTSThe total cost for the water treatment is estimated at $0.95/t milled. Four personnel arerequired to operate the plant. The annual labour cost includes the benefit burdenoutlined in Section 21.2.3. Water treatment personnel, together with personnel from thebackfill plant, will undertake surface services duties as required. A summary of the watertreatment plant operating cost is shown in Table 21.9.Table 21.9Summary of Water Treatment Operating CostDescriptionLabourForceAnnual Cost($)Unit Cost($/t Milled)Labour ForceOperating Labour 4 276,000 0.31Subtotal Labour Force 4 276,000 0.31Major ConsumablesReagent Consumables - 361,000 0.40Subtotal Major Consumables - 361,000 0.40SuppliesMaintenance Supplies - 180,000 0.20Operating Supplies - 10,000 0.01Power Supply - 28,000 0.03Subtotal Supplies - 218,000 0.24Total (water treatment) - 855,000 0.95Pretium Resources Inc. 21-16 1291990200-REP-R0012-02Feasibility Study and Technical Report on the BrucejackProject, Stewart, BC