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Table MR 191-1. Average cosUfoot for Flintlock Pit haulroads regrade. <br /> Regrade Costs <br /> Unit Unit <br />Haulroad Haulroad Hours Cost Hours Cost Average <br />Designation Length Ripping' ($/hr)"' Grading' ($/hr)"' $/ft <br /> <br />F2 3,300 56 226.60 55 213,59 7.41 <br />F3 2,200 37 226.60 37 213,59 7.40 <br />F4 3,000 51 226.60 50 213.59 7.41 <br />F5 1,300 22 226.60 22 213.59 7.45 <br />Total 9,800 t66 226.60 164 213.59 7.41 <br />'See Parrott table 1.4.5. <br />"See peonit Table 1.4-2. <br />Projected F7 haulroad regrade costs: 3,100 feet multiplied by b7.41/foot = 22 871. <br />