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Bowie No. 2 Mine C1996083 <br />Truck <br />Midterm Review No. 4 (MT -4) <br />Struck Volume: <br />10.00 <br />LCY <br />Heaped Volume: <br />12.00 <br />LCY <br />Average Volume: <br />11.00 <br />LCY <br />Adjusted Volume: <br />12.00 <br />LCY <br />(Cat HB) <br />Final Truck <br />Volume Based on Number of Loader Passes: <br />Loading Tool Capacity <br />(Cat HB) <br />Dump Target: <br />Page 62 of 558 <br />11.61 LCY <br />Bucket Size Class: NA <br />Rated Capacity: 4.300 LCY (heaped) <br />Bucket Fill Factor: 0.675 Blasted rock - poorly blasted (60 - 75 %) 0.675 <br />Adjusted Capacity: 2.903 LCY <br />Job Condition Corrections: Site Altitude (ft.): 7100 feet <br />Net Correction: 0.830 0.830 <br />Loading Tool Cycle Time: Number of Loading Tool Passes Required to Fill <br />Excavators and Front Shovels: Truck: <br />Machine Cycle Time vs. Job Condition Rating: NA <br />Selected Value within this Basic Rating: NA <br />Track Loaders — Material Description: <br />Cycle Time Elements (min.): <br />Load: NA Maneuver: NA Dump: 0.100 <br />Wheel and Track Loaders - Unadjusted Basic Loader Cycle Time (load, dump, maneuver): 0.500 minutes <br />4 passes <br />Cycle Time Factors <br />Truck <br />Loader <br />Source <br />Altitude Adj: <br />1.000 <br />1.000 <br />(CAT HB) <br />Job Efficiency: <br />0.830 <br />0.830 <br />(CAT HB) <br />Net Correction: 0.830 0.830 <br />Loading Tool Cycle Time: Number of Loading Tool Passes Required to Fill <br />Excavators and Front Shovels: Truck: <br />Machine Cycle Time vs. Job Condition Rating: NA <br />Selected Value within this Basic Rating: NA <br />Track Loaders — Material Description: <br />Cycle Time Elements (min.): <br />Load: NA Maneuver: NA Dump: 0.100 <br />Wheel and Track Loaders - Unadjusted Basic Loader Cycle Time (load, dump, maneuver): 0.500 minutes <br />4 passes <br />Cycle Time Factors <br />Factor (min.) <br />Source <br />Material: <br />Bank or broken material 0.04 <br />0.040 <br />(Cat HB) <br />Stockpile: <br />Dumped by truck 0.02 <br />0.020 <br />(Cat HB) <br />Truck Ownership: <br />Common ownership of trucks and loaders -0.04 <br />-0.040 <br />(Cat HB) <br />Operation: <br />I Constant op eration -0.04 <br />-0.040 <br />(Cat HB) <br />Dump Target: <br />Fragile target 0.05 <br />0.050 <br />1 (Cat HB) <br />Net Cycle Time Adjustment: <br />Adjusted Loader Cycle Time: <br />Net Load Time per Truck: <br />0.030 minutes <br />0.530 minutes <br />1.690 minutes <br />Truck Cycle Time: <br />Truck Exchange Time: 0.50 Minutes Adjusted for site altitude: 0.500 Minutes <br />Truck Load Time: 1.690 Minutes Adjusted for site altitude: 1.690 Minutes <br />Truck Maneuver and Dump Time: 0.90 Minutes Adjusted for site altitude: 0.900 Minutes <br />Truck Travel (Haul & Return) Time: Road Condition: Rutted dirt, little maintenance, no water, 2" tire <br />penetration 5.0 <br />