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Coal Ridge No. 1 Mine C1984065: MT7 <br />Cycle Time: <br />Scraper Loading Time: <br />Maneuver and Spread Time: <br />Job Condition Correction: <br />0.90 Minutes <br />0.70 Minutes <br />April 14, 2014 <br />Site Altitude: 5700 feet <br />Net Correction: 0.830 NA <br />Travel Time: <br />Road Condition: Rutted dirt, little maintenance, no water, 1" tire penetration 4.0 <br />Haul Route: <br />Seg # <br />Scraper <br />Push Dozer <br />Source <br />Altitude Adj : <br />1.000 <br />NA <br />(CAT HB) <br />Job Efficiency: <br />0.830 <br />NA <br />(CAT HB) <br />Net Correction: 0.830 NA <br />Travel Time: <br />Road Condition: Rutted dirt, little maintenance, no water, 1" tire penetration 4.0 <br />Haul Route: <br />Seg # <br />Haul Distance (Ft) <br />Grade <br />Roll. Res ( %) <br />Total Res <br />Velocity (fpm) <br />Travel Time (min) <br />1 <br />1300.00 <br />-3.50 <br />4.00 <br />0.50 <br />2942 <br />0.70 <br />Haul Time: 0.70 minutes <br />Return Route: <br />Seg # <br />Haul Distance (Ft) <br />Grade <br />( %) <br />Roll. Res <br />( %) <br />Total Res <br />( %) <br />Velocity (fpm) <br />Travel Time <br />(min) <br />1 <br />1300.00 <br />3.50 <br />4.00 <br />7.50 <br />1468 <br />0.95 <br />Return Time: <br />Total Scraper team cycle time <br />Adjusted for job conditions <br />Selected Number of Scrapers <br />Adjusted single scraper team (unit) hourly production <br />Adjusted multiple scraper team (fleet) hourly production <br />Unadjusted unit production/hour: 348.00 LCY/Hour <br />Optimal Number of Scrapers per push dozer: <br />JOB TIME AND COST <br />Fleet size: 1 Team(s) <br />Unit cost: $0.687 /LCY <br />Total job time: <br />Total job cost: <br />Page 17 of 28 <br />0.95 <br />minutes <br />3.25 <br />minutes <br />288.84 <br />LCY/Hour <br />1 <br />Scraper(s) <br />288.84 <br />LCY/Hour <br />288.84 <br />LCY/Hour <br />18.22 Hours <br />$3,614.91 <br />