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L+ado Division of Minerals and Geology • <br />ESTIMATING FORM - BULLDOZER RIPPING <br />___________________________________ <br />Task #: 6 Prep. by: 555 Task File Name: M011-6 <br />Dale: 12/10/97 Permit #: M94-011 Mine: West End Gravel Pit No. 1 <br />Permit Action: Conversion No. 1 Application <br />Task Description: Rip Northwest Unit Pit Floor <br />HOURLY EOUI PMENT COST <br />_________________ ___ Basic Machine: Cat D9N Horsepower: 370 <br />Blade Type: SEMI-UNIVERSAL ---------- <br />Attachment #1: ROPS Cab Shift Basis: 1/day <br />Attachment #2: 3-shank ripper ---------- <br />Cost/Hr Breakdown: Utilization X (code oSll) <br />----------------- ownership = 543.41 N/A <br />operating/overhaul - dozer = 574.86 100 <br />-ripper = 57.69 100 <br />operator = E22.95 N/A <br />Total egpt. unit cost/hr = 5148.90 Total fleet cost/h r: 5148.90 <br />_-_______ _________ <br />MATERIAL QUANTITIES <br />___________________ Selected method Area <br />Seismic Load Bank ------------- <br />method: N/A N/A Factor N/A Volume N/A BCY <br />Area -'--_----- -_--___ ----____-__ <br />method: 7.40 Acres Rip Depth: 7.50 Volume 17,908 BCY or CCY <br />Source of quantity take-off: Exhibit C - Mine Plan Map <br />Source of mat. load factor: N/A <br />HOURLY PRODUCTION <br />Seismic Method - Seismic velocity of material: N/A feet/sec. <br />-------------- - Unadjusted hourly production: N/A BCY or CCY/hr <br />Area Method - Avg. ripping depth per pass: 1.50 feet <br />----------- - Avg. ripping width per pass: 7.67 feet <br />- Avg. ripping length per pass: 500.00 feet <br />• Avg. velocity of machine 88.00 feet/min. <br />- Avg. machine maneuver time 0.25 minutes <br />- Hourly prod. per unit area 0.891 acres/hr <br />- Unadjusted hourly production: 2,155.04 BCY or CCY/hr <br />Correction Factors -Unadjusted production = 2,i5S.04 BCY or CCY/hr <br />------------------ -Site altitude = 5,800 feet <br />- Altitude adjustment = 1.00 (Cat tbl) <br />- Job efficiency factor = 0.83 (1sh/day) <br />- Net correction = 0.83 multiplier <br />- Adjusted production = 7788.69 BCY or CCY/hr <br />- Fleet production = 1788.69 BCY or CCY/hr <br />JOB COST =_______ <br />Fleet Size 1 Dozers) Total Job Time: 10.01 Hours <br />Unit Cost 50.083 /LCY Total Job Cost: 51,490.78 <br />