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1 - D9U dozer: 2,896 hours @ $127.00/hr. = $367,792.00 <br /> I - Operator: 2,896 hours @ $ 15.00/hr. = $ 43,440.00 <br /> TOTAL COST $411,232.00 <br /> The upper bin has a pad area of approximately 0.20 acres which 'must be backfilled <br /> to an average depth of 8.5 feet. Therefore, 2,743 yd3 must be inoved. The <br /> average push distance would be 125 feet. The unadjusted production rate for a <br /> D9U would be 1,200 LCY/hr. <br /> The factors affecting production are: <br /> Condition Factor <br /> Average Operator 0.75 <br /> Rock Material 0.70 <br /> 50 min. work hour 0.84 <br /> Grade factor 38% 0.26 <br /> Altitude deration 0.94 <br /> Overall Factor 0.11 <br /> Under these conditions, a D9U has a production rate of 132 LCY/hr. , and 'would require <br /> 21 hours. to complete the backfilling operation at the following cost.- <br /> 1 - D9U dozer: _ 21 hours @ $127.00/hr. = $2,667.00* <br /> 1 - Operator: 21 hours @ $ 15.00/hr. = $ 315.00 <br /> TOTAL COST: $2,982.00 <br /> The lower coal bin has a pad area of approximately 0.8 acres which must be backfilled <br /> to an average depth of 19 feet. A D9U would have an average push distance of <br /> 150 feet .to move a total of 24,522 yd3 of material. The unadjusted production rate <br /> for a 150-foot push distance is 1,000 LCY/hr. The production factors would be <br /> the same as the upper bin pad. Therefore, the production rate would be 110 LCY/hr. <br /> At this production rate, it would take a D9U 223 hours to complete this operation <br /> at .the following cost: <br /> 1 - D9U dozer: 223 hours @ $127.00/hr. = $28,321.00 <br /> 1 - Operator: * 223 hours @ $ 15.00/hr. = $ 3,345.00 <br /> TOTAL COST: $31,666.00 <br />