2008-08-11_PERMIT FILE - C1992080

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User TA K Site Carbon Junction Mine Filename:C080-001 Agency ov organization name: CDRMS Permit or other job action :RN-%3 ---- Task description: B«ina HOURLY EQUIPMENT COST downcast spoil from N. Pit slope up to bench at N. Pit Machine description : Cat 330C L Horsepower: 244 Weight (MT): 33.72 Cost Breakdown Utilization % Ownmrship000t/hour $45.61 NA Shiftbooio: 1 perday OperaUng000Vhour: $61.06 100 Data source OperahurcouVhour: $3298 NA Basic job condition descr To unitcou�hour: $13Q�O3 Secondary job condition within basic description Toa|fleet cnn�hour: $139.63 MATERIAL QUANTITIES Cycle time value: 0.32 minutes Initial Swell Loose volume: 4L000 CCY hactor: 1.165 volume: 4 LCY Source of estimated volume: Reclamation plan, page 5 Source of estimated swell factor: CDRMSestimate HOURLY PRODUCTION Excavator Cycle Time (load bucket, swing loaded, dump bucket, swing empty) Basic job condition descr AVERAGE Secondary job condition within basic description AVERAGE Cycle time value: 0.32 minutes Bucket Capacity Rated bucket capacity 2.25 LCY (heaped) Bucket size class medium Bucket fill factor 0.08 Ronk Well blasted Adjusted bucket capacity: 1.52 LCY Job Condition Correction Factors Source Site altitude : 7,070 feet Altitude adjustment Job efficiency adjustment: 0.83 (1 shiftlday)_ Net job correction 0.83 — multiplier Unadjusted hourly unit production 28388 LCY/hour Adjusted hourly unit production 235.62 LCY/hour Adjusted hourly fleet production 235.62 LCY/hour JOB TIME AND COST Fleet size Y excavator(s) Total job time _____ 19.78 hours Unit cost $0.593 per LCY Total job cost $2,762