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Coal Ridge No. 1 Mine C-1984-065: MT-08 April 2, 2019 <br /> <br />Page 16 of 27 <br /> <br />Rated Payload: 26,400 pounds Average Volume: 9.95 LCY <br />Payload Capacity: 10.35 LCY Adjusted Capacity: 9.95 LCY <br /> <br /> <br /> <br /> <br />Cycle Time: <br />Scraper Loading Time: 0.90 Minutes <br />Maneuver and Spread Time: 0.70 Minutes <br />Job Condition Correction: Site Altitude: 5700 feet <br /> Scraper Push Dozer Source <br />Altitude Adj: 1.000 NA (CAT HB) <br />Job Efficiency: 0.830 NA (CAT HB) <br /> <br />Net Correction: <br /> <br />0.830 <br /> <br />NA <br />Travel Time: <br /> Road Condition: Rutted dirt, little maintenance, no water, 1” tire penetration 4.0 <br />Haul Route: <br />Seg # Haul Distance (Ft) Grade <br />(%) <br />Roll. Res <br />(%) <br />Total Res <br />(%) <br />Velocity (fpm) Travel Time <br />(min) <br />1 1300.00 -3.50 4.00 0.50 2259 0.73 <br />Haul Time: 0.73 minutes <br />Return Route: <br />Seg # Haul Distance (Ft) Grade <br />(%) <br />Roll. Res <br />(%) <br />Total Res <br />(%) <br />Velocity (fpm) Travel Time <br />(min) <br />1 1300.00 3.50 4.00 7.50 1428 0.98 <br />Return Time: 0.98 minutes <br />Total Scraper team cycle time: 3.31 minutes <br />Adjusted for job conditions: 149.70 LCY/Hour <br />Selected Number of Scrapers: 1 Scraper(s) <br />Adjusted single scraper team (unit) hourly production: 149.70 LCY/Hour <br />Adjusted multiple scraper team (fleet) hourly production: 149.70 LCY/Hour <br />Unadjusted unit production/hour: 180.36 LCY/Hour <br />Optimal Number of Scrapers per push dozer: <br /> <br />JOB TIME AND COST <br />Fleet size: 1 Team(s) Total job time: 35.16 Hours <br /> <br />Unit cost: <br /> <br />$0.850 <br /> <br />/LCY <br /> <br />Total job cost: <br /> <br />$4,472 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />