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c <br />C <br /> <br />ESTIMATED LOADING EQUIPMENT PRODUCTIVITY <br />Type of Equipment <br />Material to Load <br />In Situ Density of Material <br />Material Swell Factor <br />Loose Density of Material <br />Bucket Size <br />Bucket Fill Factor <br />Average Tona Per Bueket <br />Size of Truck to Load <br />Theoretical Buckets Per Load <br />Truek Load Factor <br />Average Truck Load <br />Actual Buckets Per Load <br />Swing Cyele Time <br />Spot Time Between Loads <br />Total Time Per Load <br />Loads Per Hour <br />Loader Productivity Per Hour <br />CAT 637-D <br /> <br />sandstone, <br />shale S coluvium <br /> <br />1.50 tons/ou yd <br /> <br />25 i <br /> <br />1.20 tons/ou yd <br /> <br />26 cy <br /> <br />31.2 tons <br /> <br /> tons <br />tons <br />min <br />min <br />3.0 min <br />624 tons/hr sch <br />520 BCY/hr sch <br />60 min 20 passes/scheduled hour <br />3 min/pass <br />3 /2~8~ <br />