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• <br />• iii iiiiuiiiiiii iii <br />899 <br />High and Dry 110(2) Borrow and Gravel <br />(Example ~2) <br />15' Highwall at One Side - Sloping to no Highwall (0' Highwall) at Entry Side. <br />Use 9 Acre Pit <br />1 Acre Topsoil Storage, Loadout, etc. <br />Average Depth 7.5 ft. <br />Average Topsoil Replaced 6" <br />Pit = 630 ft. per side = 9 acres <br />Topsoil = 6" x 392,040 ft2 <br />Topsoil = 1/6 yd. deep x 43,560 yd2 <br />= 7,260 yd3 <br />Average Push for Topsoil = 175' <br />Cost to Retopsoil - See computer worksheet for complete data <br />7,260 yd3 @ 5.65/yd $5,513.22 <br />Slope Mined at 1H - 1V <br />Return to 2H - 1V <br />Example !{1 has average height of 15 ft. = 12.5 yd3 per linear yd. This <br />(Example J12) pit averages 7.5 ft. high on 2 sides. 6.253 on one side and no <br />pushing on the open side. <br />Tota' material to push equals 3.125 yd3 per linear yd. x 600.00 ft <br />(200 yds .) per side on 2 sides = 600 ft. 3 (3 ft. per yd> x 2 sides <br />3.12yd3 per linear yard = 1,250 yd3 <br />Plus one side at 6.25 ydlj per linear yd. = 600 ft. 3 (3 ft. per yd.) <br />x 1 side x 6.25yd3 per linear yd. = 1,250 yd3 <br />Total Yd3 for backfilling = Z~0 yd3 <br />