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Main Cresson Mine Reclamation - Mass Earthwork, Growth Media Haul /Place, and Revegetation <br />Footnotes for summary cost table'. <br />'Assumes heavy grading wall be done with conventional D10 or D11 dozers with U blades where the push distances are practical <br />'Assumes light grading will be done with a D9 dozer on the backfilled areas in Wildhorse Extension area Irate = 2 hislacm) <br />'Growth Medium Replacement fleet will consist of three 623 Scrapers <br />'Growth Medium will be spread using a D -9 dozer to a depth of 6 inches <br />'Sal analyses will be run on sample. of the reclaimed areas to determine optimum fertilizer rates <br />"Ripping and fertilizing will be conducted on the replaced growth medium using a conventional D4 dozer with a cydone spreader <br />7Seeding and harrowing will be conducted on all replaced growth medium that is traversable with conventional equipment <br />oAssumes approximately hag the area will require hand - seeding to achieve revegetabon <br />*Mulching will be conducted using conventional hydr"eederarydro-mulcher <br />1OTrees and shrubs will be planted on north and east - facing slopes <br />"Supervisor costs are figured at 25 percent of the total work hours to accomplish the reclamation effort <br />s the Total Volume of backfilled rock to be graded? - <br />a the average Haul Distance for all material? <br />Dozer Productivity Calculation for Heaw Gradina <br />__ _______ Quantity____ Common_ _ _ _ _ _ _ _ _ ________ <br />- 6,304,446 Reference Sheet 9 (Average of cutffill amounts) <br />------ - - - - -� <br />I <br />What is the volume if it were all just 5 ft. grading ? <br />2,474,047 <br />Calculated Volume = Area x 5 ft 127 <br />iWhat is the expected average push distance for leveling piles? <br />100 <br />Short Doze to level out end -dumped truck loads <br />iWhat is the job correction factor for the operator? <br />0.75 <br />Average Operator, Cat Hdbk, 33 Ed, p1-42 I <br />What is thejob correction factor for the material condition? <br />1.2 <br />Waste rock is loose, Cat Hdbk, 33 Ed, p142 <br />'What is the job correction factor for job efficiency? <br />0.83 <br />50 minutes operating per hour, Cat Hdbk, 33 Ed, p142 i <br />What is the job correction factor for downhill grade pushing? <br />1.2 <br />Assume conservatively 10% grade, Cal Hdbk, 33 E4 p142 <br />.What is the job correction factor for aide by aide dozing? <br />_ 1.2 <br />Side by aide dozing, Cat Hdbk,33 EQ p1 -02— — •_•_•_•_•_•_•------ _•_•_•_•_- <br />—_-_-_ <br />_ _ _ _ _ <br />°—_•—_•_•—_--_'— °_•—_•—_•_ —_ °_•_ —_-- _'— _•_—_- -- _— _— _—Lo_ngPush.__A. <br />advetoTrucks_•—_•_• <br />_ _ _ _ _ _ _ ___-- -- -- ----__ <br />Iwhal as unadjusted production based on push diatance for a D70? <br />452 <br />cu yds/hr from Regression Equation Developed from Cat Handbook Version 39 I <br />(Calculated adjusted production based on jobfactom = <br />486.2 <br />cu yds/hr calculated 0.0 <br />Calculated D70 Dozer houm in reding = <br />— — — — — — — — — — — — — — — — — — — — <br />16766 77 <br />— — — — = -- <br />hours Assumin that Material must be double handled, times are doubled <br />--- — — —Q— ----°- -------- -- -- •- -- -- ------ - - - --- — — — <br />(What is unadjusted poduction based on push distance for a D11? <br />702 <br />cu yds/hr from Regression Equation Developed from Cal Handbook Version 39 <br />adjusted production based on job factor. = <br />755.1 <br />cu ydslhr calculated 0.0 i <br />iCalculated <br />Celculeled DlO Dozer hours In grading _•_•_•— <br />—• 10146.41 <br />-- •Short•Push <br />hours _-_•_•_•_•_•---- _- _•_•_•_•_•_•_----- _•_•_•_•_•_ <br />- •— •-- _---- _— _-- _ - -_ <br />—_•_•_ <br />Levalrn8 Piles_ <br />_•— _•— _•— _•— _•— _• <br />_ _ _ _ _ _ __ <br />What m unadjusted production based on push tlistance for a Of 0? <br />1,760 <br />—__ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ______________ <br />cu ydslhr from Regression Equation Developed from Cat Handbook Version 39 1 <br />(Calculated adjusted production based on job factors = <br />1893.4 <br />cu ydi calculated I <br />Cacuatetl D70 Dozer hours it grading = <br />— - — - — - — - — - — - — - — - — - — - — - <br />1306.70 <br />— - — - —=— <br />hours — — — — — — — — — — — — — — <br />— — -- — — — — — — — — — — <br />— ---------- <br />What is unadjusted production based on push tlistance for a of 1? <br />2,728 <br />cu ydslhr from Regression Equation Developed from Cat Handbook Version 39 <br />Calculated adjusted production based on job factors = <br />2934.1 <br />cu ytlsmr calculated <br />ICalculrrtetl 21qP9Le r hours in rading = <br />843.21 <br />hour <br />Mass Haul Productivity for Fill Earthwork Exceeding 5 tt Heavy Dozer Levellmo of Piles <br />Additional Volume that will be truck hauled <br />3,830,398 Difference between Total Volume and the Volume for leveling 5 n piles <br />Whet is the weighted average Haul Distance for the truck haul? <br />462 Change In Moment arm by removing 5 ft. push -(VYHDt- VdoHDd)Nrem <br />What is loaded travel time based on haul distance 8 rolling resistance (min)? <br />OA <br />What is empty travel time based on haul distance 8 rolling resistance (min)? <br />0.2 <br />What is the manuever time for trucks at the loading area (min)? <br />0.70 <br />What is the length of time 6 takes a truck to dump (min)? <br />1.00 <br />What is the capacity of the selected truck (avg cu yds)? <br />64 <br />Calculated time for loading a truck (min) = <br />3.00 <br />Total Cycle Time (Maneuver+ Load + Loaded Haul + Empty Haul + Dump) = <br />5.25 <br />Calculated number of truckloads per hour = <br />11.4 <br />What is the efficiency of the haulage effort expressed as minutes per hour? <br />55 <br />Calculated Productivity of Loader/Truck Combination (cu yds /hour) = <br />670.4 <br />Total Fleet Hours Required <br />5713.4 <br />15 -Main Cresson <br />3/21/2014 <br />