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C Mechanical availability = .90 <br />Operational availability = .95 <br />Total overburden production/scraper = 445 BCY/scheduled hours <br />Backfill time required - 306.400 HCY 689 scheduled hours <br />445 HCY/soh hrs <br />= 5i8~9 operated hours J <br />OoeratinQ Costs <br />631-D scraper = 14 .2 x 589 operated hours = $8~42b 1~~i8`« <br />op hr <br />~Zav~i <br />CAT D8-L Dozer = oP'hr x ~5~ operated hours = $24,803 Z cif <br />S, <br />GSA sc z~y <br />Labor Costs <br /> <br />Scraper operator = 689 scheduled hours x 11'50 = $7,924 y'o'SS <br />sch hr <br />Dozer operator = 345 scheduled hours x sch2hr- $3'791 3Y ~ ~ <br />C Total backfilling costs = $123.838 <br /> <br />2 i.~/~~ <br />