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Knock Down North Wall 0 <br /> Length (ft) 825.00 1 <br /> Slope 3:1 <br /> Height(ft)Topography does not change 15 ft — <br /> 1 <br /> significanity from west to north 7.50 3 SZ c4) <br /> Width(ft) 45.00 7.5 ft m q� <br /> Width of backfill (ft) 22.50 <br /> Mine Grade 0.25:1 22.5 FT <br /> 45 FT � <br /> Backfill Area per unit length(sf) 84 <br /> Backfill Volume(cf) 69,609 <br /> Backfill Volume(cy) 2,578 <br /> Mine Grade Area per unit length (sf) (7.03) <br /> Mine Grade Volume(cf) (5,801) JOB CONDITION CORRECTION FACTOR <br /> Mine Grade Volume(cy) (215) Operator Skill Above Average 0.900 <br /> Material consistency 1.100 <br /> Total Backfill Volume(cf) 63,809 Dozing method slot 1.200 <br /> Total Backfill Volume(cy) 2,363 Visibility 1.000 <br /> Slope Length (ft) 47.4 Job Efficiency(50 min/hr) 0.830 <br /> Spoil Pile 1.000 <br /> Push Gradient 1.516 <br /> HOURLY PRODUCTION ADJUSTMENT Altitude 1.000 <br /> Average Push Distance(ft) 47.4 Material Weight 0.868 <br /> Unadjusted Hourly Production (LCY/hr) 2,605 Blade Type(U Blade) 1.000 <br /> Net Correction 1.2975 NET CORRECTION 1.2975 <br /> Adjusted Fleet Production(LCY/hr) 3,380 <br /> Total Fleet Cost/hr $253.83 <br /> Total Job Time(hr) 0.70 <br /> Total Job Cost($) $177.47 <br /> NOTES <br /> Adjust push distance to reflect site conditions and correct"Unadjusted hourly production". <br /> Make corrections for 3:1 slope <br /> Adjust highwall backfill to a balanced cut and fill. <br /> Adjust operator skill to reflect premium wage and adjust"Net Correction Factor". <br />