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Highwall reduction - backfill <br />Highwall Height (ft.) <br />Length of Highwall (Ift.) <br />Initial Slope <br />Desired Slope <br />Volume of material to be moved (ft.') <br />Volume of material to be moved (yd.') <br />All dimensions measured in feet <br />Drawing not to scale <br />22.5 <br />1200 <br />0.5 H:1V <br />3 H:1V <br />759,375 <br />28,125 <br />I <br />I <br />I <br />22.5 <br />I <br />633 ft.z <br />I <br />45 11.25 <br />67.5